test use canvas util img for pyterract im…#408

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Merged
sstripps1 merged 1 commit into from
Feb 10, 2020
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test use canvas util img for pyterract im… #408

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126 changes: 126 additions & 0 deletions apps/dash-oss-canvas-text/.gitignore
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# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/

2 changes: 2 additions & 0 deletions apps/dash-oss-canvas-text/README.md
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# Dash Canvas OCR

55 changes: 37 additions & 18 deletions apps/dash-oss-canvas-text/app.py
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from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
# Banner
html.Div(
[
html.Img(src=app.get_asset_url("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'
),
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.Img(id='my-image', width=300),
html.Div(id='text-output', children=''),
html.P(id='my-output')
], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
[Input('canvas', 'json_data')])
def update_data(string):
if string:
mask = parse_jsonstring(string, (canvas_height, canvas_width))
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

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

else:
raise PreventUpdate
# array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
text = pytesseract.image_to_string(mask)
return text


if __name__ == '__main__':
Expand Down
Loading
, '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" + '

Skip to content
test use canvas util img for pyterract im…#408

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 Merged

sstripps1
merged 1 commit into

from

Feb 10, 2020
 Merged


test use canvas util img for pyterract im…
#408
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126 changes: 126 additions & 0 deletions
apps/dash-oss-canvas-text/.gitignore

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,126 @@
# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

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Original file line numberDiff line numberDiff line change
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# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,49 +1,68 @@
from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading

, '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
test use canvas util img for pyterract im…#408

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 Merged

sstripps1
merged 1 commit into

from

Feb 10, 2020
 Merged


test use canvas util img for pyterract im…
#408
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126 changes: 126 additions & 0 deletions
apps/dash-oss-canvas-text/.gitignore

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,126 @@
# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

View file


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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,49 +1,68 @@
from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading

, '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
test use canvas util img for pyterract im…#408

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 Merged

sstripps1
merged 1 commit into

from

Feb 10, 2020
 Merged


test use canvas util img for pyterract im…
#408
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126 changes: 126 additions & 0 deletions
apps/dash-oss-canvas-text/.gitignore

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,126 @@
# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

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# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

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Original file line numberDiff line numberDiff line change
@@ -1,49 +1,68 @@
from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading

, '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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merged 1 commit into

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Feb 10, 2020
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test use canvas util img for pyterract im…
#408
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apps/dash-oss-canvas-text/.gitignore

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# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

View file


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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,49 +1,68 @@
from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading

, '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('^' + ".*" + '

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 Merged

sstripps1
merged 1 commit into

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Feb 10, 2020
 Merged


test use canvas util img for pyterract im…
#408
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126 changes: 126 additions & 0 deletions
apps/dash-oss-canvas-text/.gitignore

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Original file line numberDiff line numberDiff line change
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# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

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Original file line numberDiff line numberDiff line change
@@ -1,49 +1,68 @@
from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading

, '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('^' + ".*" + '

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 Merged

sstripps1
merged 1 commit into

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Feb 10, 2020
 Merged


test use canvas util img for pyterract im…
#408
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126 changes: 126 additions & 0 deletions
apps/dash-oss-canvas-text/.gitignore

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,126 @@
# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,2 @@
# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,49 +1,68 @@
from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading

, '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 1 commit into

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Feb 10, 2020
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test use canvas util img for pyterract im…
#408
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126 changes: 126 additions & 0 deletions
apps/dash-oss-canvas-text/.gitignore

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# Created by .ignore support plugin (hsz.mobi)
### Python template
# Byte-compiled / optimized / DLL files
__pycache__/
*.py[cod]
*$py.class

# C extensions
*.so

# Distribution / packaging
.Python
build/
develop-eggs/
dist/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
wheels/
pip-wheel-metadata/
share/python-wheels/
*.egg-info/
.installed.cfg
*.egg
MANIFEST

# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec

# Installer logs
pip-log.txt
pip-delete-this-directory.txt

# Unit test / coverage reports
htmlcov/
.tox/
.nox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*.cover
.hypothesis/
.pytest_cache/

# Translations
*.mo
*.pot

# Django stuff:
*.log
local_settings.py
db.sqlite3

# Flask stuff:
instance/
.webassets-cache

# Scrapy stuff:
.scrapy

# Sphinx documentation
docs/_build/

# PyBuilder
target/

# Jupyter Notebook
.ipynb_checkpoints

# IPython
profile_default/
ipython_config.py

# pyenv
.python-version

# pipenv
# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
# However, in case of collaboration, if having platform-specific dependencies or dependencies
# having no cross-platform support, pipenv may install dependencies that don't work, or not
# install all needed dependencies.
#Pipfile.lock

# celery beat schedule file
celerybeat-schedule

# SageMath parsed files
*.sage.py

# Environments
.env
.venv
env/
venv/
ENV/
env.bak/
venv.bak/

# Spyder project settings
.spyderproject
.spyproject

# Rope project settings
.ropeproject

# mkdocs documentation
/site

# mypy
.mypy_cache/
.dmypy.json
dmypy.json

# Pyre type checker
.pyre/


2 changes: 2 additions & 0 deletions
apps/dash-oss-canvas-text/README.md

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# Dash Canvas OCR


55 changes: 37 additions & 18 deletions
apps/dash-oss-canvas-text/app.py

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from PIL import Image
import base64
from io import BytesIO

import dash
import numpy as np
import dash_html_components as html
from dash_canvas import DashCanvas
from dash_canvas.utils import array_to_data_url, parse_jsonstring
from dash.dependencies import Input, Output, State
from dash.exceptions import PreventUpdate
import pytesseract

#todo: add tesseract-ocr and libtesseract-dev to venv
import pytesseract

app = dash.Dash(__name__)
server = app.server

canvas_width = 300
canvas_height = 200
canvas_width = 600
canvas_height = 450

app.layout = html.Div([
 # Banner
 html.Div(
 [
 html.Img(src=app.get_asset_url("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'
 ),
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.Img(id='my-image', width=300),
 html.Div(id='text-output', children=''),
 html.P(id='my-output')
 ], className="five columns"),
])
])


@app.callback(Output('my-output', 'children'),
@app.callback(Output('text-output', 'children'),
 [Input('canvas', 'json_data')])
def update_data(string):
 if string:
 mask = parse_jsonstring(string, (canvas_height, canvas_width))
 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

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

 else:
 raise PreventUpdate
 # array = array_to_data_url((255 * mask).astype(np.uint8)) #todo: include outputted image as well
 text = pytesseract.image_to_string(mask)
 return text


if __name__ == '__main__':
Expand Down
Loading