imagecropper

I needed a tiny tool to rotate and crop lots of images to train opencv.

Usage:

• check out repo
• mvn clean package
• start jar-with-dependencies
• pick root directory with source images (directory will be traversed recursively)
• pick target directory
• start cropping

Cropping:

• default mode is Pan, use the mouse to move the image
• Rotate:
  • select, or hold R key
  • click-and-drag to rotate image (center is center of window)
• Zoom:
  • either use mouse wheel OR
  • select or hold Z key
  • click and drag to zoom in (the further you drag, the closer you zoom)
• Select:
  • select or hold S key
  • click and drag to mark an area
• Save
  • save selected area (or visible area if nothing selected) to output directory. Filename will be _crop. to make name unique.
• Next
  • Load next image
• save and next
  • Exactly as the name suggests.