Oss canvas layout#409

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Merged
sstripps1 merged 4 commits into from
Feb 11, 2020
Merged

Oss canvas layout #409

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b671d64
Add basic layout structure
ycaokris Feb 11, 2020
2333d9d
Merge branch 'oss-canvas-text' into oss-canvas-kris
ycaokris Feb 11, 2020
83e0edd
Minor tweaks
ycaokris Feb 11, 2020
44a6bc6
set fixed canvas to 200
ycaokris Feb 11, 2020
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71 changes: 50 additions & 21 deletions apps/dash-oss-canvas-text/app.py
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Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
# Banner
html.Div(
[
html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
html.H4("Dash OCR", className="header__text"),
],
className="app__header",
),
html.H6('Draw on image and press Save to show annotations geometry'),
html.Div([
DashCanvas(id='canvas',
lineWidth=2,
width=canvas_width,
hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
lineColor='black',
goButtonTitle='Sign'
),
], className="five columns"),
html.Div([
html.Img(id='my-image', width=300),
html.Div(id='text-output', children=''),
html.P(id='my-output')
], className="five columns"),
])
# Canvas
html.Div(
[
html.Div(
[
html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
html.Div(
DashCanvas(id='canvas',
lineWidth=10,
width=canvas_width,
height=canvas_height,
hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
lineColor='black',
goButtonTitle='Sign'
)
, className="canvas-outer")],
className='v-card-content'
),
# Annotation Geometry
html.Div(
[
html.P("Handwriting annotation geometry", className='section_title'),
html.Img(id='my-image',
width=canvas_width,
)
],
className='v-card-content'
),
# OCR output div
html.Div([
dcc.Markdown(id='text-output', children='')
],
className="v-card-content")
],
className='app__content'
)
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
if string:
mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
# np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
print(mask)
mask = (~mask.astype(bool)).astype(int)
print(mask)

# image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

# this is from canvas.utils.image_string_to_PILImage(image_string)
img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

img.save("geeks2.png")
print('img', img)
text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
print('text', text)
return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
return text # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

else:
raise PreventUpdate
Expand Down
0 ...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png
View file
Open in desktop
File renamed without changes
56 changes: 56 additions & 0 deletions apps/dash-oss-canvas-text/assets/style.css
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
height: 40px;
margin: 10px;
}

.app__header {
display: flex;
align-items: center;
background-color: #eeeeee;
height: 60px;
}

.header__text {
font-family: Roboto;
font-weight: 600;
letter-spacing: 0.1em;
margin-left:20px;
}

body {
margin: 0px;
font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
display: flex;
flex-direction: column;
align-items: center;
justify-content: flex-start;
}

.section_title {
margin: 1em 0px;
}

.v-card-content {
display: flex;
flex-direction: column;
justify-content: flex-start;
margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
margin: 10px 5px !important;
border: 1px solid black;
background-color: white;
transition: all 0.2s ease;
height: 37px !important;
color: black !important;
}

#my-image {
border: 1px solid grey;
height: 150px;
}

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Oss canvas layout#409

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 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
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b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

View file


Open in desktop


File renamed without changes


56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Oss canvas layout#409

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
Show file tree
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b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

View file


Open in desktop


File renamed without changes


56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Oss canvas layout#409

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 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
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4 commits


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b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

View file


Open in desktop


File renamed without changes


56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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Oss canvas layout#409

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 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
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b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

View file


Open in desktop


File renamed without changes


56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Oss canvas layout#409

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to your account

 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
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b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

View file


Open in desktop


File renamed without changes


56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Oss canvas layout#409

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
Show file tree
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4 commits


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Hold shift + click to select a range
b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

View file


Open in desktop


File renamed without changes


56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}


, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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 Merged

sstripps1
merged 4 commits into

from

Feb 11, 2020
 Merged


Oss canvas layout
#409
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b671d64

Add basic layout structure


ycaokris Feb 11, 2020
2333d9d

Merge branch 'oss-canvas-text' into oss-canvas-kris


ycaokris Feb 11, 2020
83e0edd

Minor tweaks


ycaokris Feb 11, 2020
44a6bc6

set fixed canvas to 200


ycaokris Feb 11, 2020

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71 changes: 50 additions & 21 deletions
apps/dash-oss-canvas-text/app.py

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Original file line numberDiff line numberDiff line change
Expand Up@@ -5,6 +5,7 @@
import dash
import numpy as np
import dash_html_components as html
import dash_core_components as dcc
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
Expand All@@ -16,33 +17,55 @@
server = app.server

canvas_width = 600
canvas_height = 450
canvas_height = 200

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("logo.png"), className="app__logo"),
 html.Img(src=app.get_asset_url("ocr-logo.png"), className="app__logo"),
 html.H4("Dash OCR", className="header__text"),
 ],
 className="app__header",
 ),
 html.H6('Draw on image and press Save to show annotations geometry'),
 html.Div([
 DashCanvas(id='canvas',
 lineWidth=2,
 width=canvas_width,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "undo", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 ),
 ], className="five columns"),
 html.Div([
 html.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
 # Canvas
 html.Div(
 [
 html.Div(
 [
 html.P('Write inside the canvas with your pencil and press Sign', className='section_title'),
 html.Div(
 DashCanvas(id='canvas',
 lineWidth=10,
 width=canvas_width,
 height=canvas_height,
 hide_buttons=["zoom", "pan", "line", "pencil", "rectangle", "select"],
 lineColor='black',
 goButtonTitle='Sign'
 )
 , className="canvas-outer")],
 className='v-card-content'
 ),
 # Annotation Geometry
 html.Div(
 [
 html.P("Handwriting annotation geometry", className='section_title'),
 html.Img(id='my-image',
 width=canvas_width,
 )
 ],
 className='v-card-content'
 ),
 # OCR output div
 html.Div([
 dcc.Markdown(id='text-output', children='')
 ],
 className="v-card-content")
 ],
 className='app__content'
 )
]
)


@app.callback(Output('text-output', 'children'),
Expand All@@ -51,15 +74,21 @@ def update_data(string):
 if string:
 mask = parse_jsonstring(string, shape=(canvas_height, canvas_width))
 # np.savetxt('data.csv', mask) use this to save the canvas annotations as a numpy array
 print(mask)
 mask = (~mask.astype(bool)).astype(int)
 print(mask)

 # image_string = array_to_data_url((255 * mask[:225]).astype(np.uint8)) # todo: include outputted image as well
 image_string = array_to_data_url((255 * mask).astype(np.uint8)) # todo: include outputted image as well

 # this is from canvas.utils.image_string_to_PILImage(image_string)
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) #try save img to see what it looks like?
 img = Image.open(BytesIO(base64.b64decode(image_string[22:]))) # try save img to see what it looks like?

 img.save("geeks2.png")
 print('img', img)
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 7')
 text = pytesseract.image_to_string(img, lang='eng', config='--psm 6')
 print('text', text)
 return text #todo : handle condition which ocr cannot recognize: return message: "enpty, try again"
 return text  # todo : handle condition which ocr cannot recognize: return message: "enpty, try again"

 else:
 raise PreventUpdate
Expand Down

0
...sh-oss-canvas-text/assets/plotly_logo.png → .../dash-oss-canvas-text/assets/ocr-logo.png

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56 changes: 56 additions & 0 deletions
apps/dash-oss-canvas-text/assets/style.css

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,56 @@
.app__logo {
 height: 40px;
 margin: 10px;
}

.app__header {
 display: flex;
 align-items: center;
 background-color: #eeeeee;
 height: 60px;
}

.header__text {
 font-family: Roboto;
 font-weight: 600;
 letter-spacing: 0.1em;
 margin-left:20px;
}

body {
 margin: 0px;
 font-family: "Open Sans", verdana, arial, sans-serif;
}

.app__content {
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: flex-start;
}

.section_title {
 margin: 1em 0px;
}

.v-card-content {
 display: flex;
 flex-direction: column;
 justify-content: flex-start;
 margin: 0em 0em 0.5em 0em;
}

.canvas-outer button {
 margin: 10px 5px !important;
 border: 1px solid black;
 background-color: white;
 transition: all 0.2s ease;
 height: 37px !important;
 color: black !important;
}

#my-image {
 border: 1px solid grey;
 height: 150px;
}