Package imageorient provides image decoding functions similar to standard library's
image.Decode and image.DecodeConfig with the addition that they also handle the
EXIF orientation tag (if present).
License: MIT.
See also: http://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto/
go get -u github.com/snapas/imageorient
https://godoc.org/github.com/snapas/imageorient
package main
import (
"image/jpeg""log""os""github.com/snapas/imageorient"
)
funcmain() {
// Open the test image. This particular image have the EXIF// orientation tag set to 3 (rotated by 180 deg).f, err:=os.Open("testdata/orientation_3.jpg")
iferr!=nil {
log.Fatalf("os.Open failed: %v", err)
}
// Decode the test image using the imageorient.Decode function// to handle the image orientation correctly.img, _, err:=imageorient.Decode(f)
iferr!=nil {
log.Fatalf("imageorient.Decode failed: %v", err)
}
// Save the decoded image to a new file. If we used image.Decode// instead of imageorient.Decode on the previous step, the saved// image would appear rotated.f, err=os.Create("testdata/example_output.jpg")
iferr!=nil {
log.Fatalf("os.Create failed: %v", err)
}
err=jpeg.Encode(f, img, nil)
iferr!=nil {
log.Fatalf("jpeg.Encode failed: %v", err)
}
}