crop-detector

Utility that finds cropped image coordinates inside original image.

Work in progress...

Usage

crop-detector DIFF_THRESHOLD ORIGINAL_IMAGE CROPPED_IMAGE

Where:

• MODE
  • every-pixel - for check every pixel for diff limit (faster than average but needs higher diff threshold);
  • average - for check average value of whole crop-size chunk at position on original image (very slow but better for JPEG artifacts, recommended to use this mode with -parallel suffix);
  • Every mode has perfect- prefix, by default this app stops when found first match, but with perfect- prefix it checks all possible coordinates and choose best match, in many cases a lot slower but gets you some guarantees, possible modes with this prefix:
    • perfect-every-pixel
    • perfect-average
• DIFF_THRESHOLD - Max percent of allowed difference (for JPEG artifacts);
• ORIGINAL_IMAGE - Path to whole image;
• CROPPED_IMAGE - Path to image that is cropped part of ORIGINAL_IMAGE.

Example cmd:

crop-detector every-pixel 20 ~/Pictures/original.jpg ~/Pictures/cropped.jpg

Example output: 137 260 201 181 It's: x y width height of cropped image.

Author

Viacheslav Lotsmanov

License

GPLv3