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Image Processing Tools

The project provides libaiden_image.a and image_process CLI for basic screenshot and image processing.

Capabilities​

  • Crop;
  • Auto-crop black bars;
  • Scale;
  • Rotate;
  • Input supports PPM(P6) and formats supported by stb_image such as JPEG/PNG;
  • Output supports .ppm, .jpg, .jpeg.

CLI Usage​

image_process crop -b T,R,B,L -i INPUT -o OUTPUT [-q 1-100 for JPEG]
image_process crop_black_bars -i INPUT -o OUTPUT [-q JPEG quality]
image_process scale -s FACTOR -i INPUT -o OUTPUT [-q JPEG quality]
image_process rotate -d DEG -i INPUT -o OUTPUT [-q JPEG quality]

Examples​

Crop top, right, bottom, left margins:

./build/bin/image_process crop -b 10,20,10,20 -i input.jpg -o cropped.jpg -q 90

Crop black bars:

./build/bin/image_process crop_black_bars -i screenshot.jpg -o no-bars.jpg

Scale to 50%:

./build/bin/image_process scale -s 0.5 -i input.png -o small.jpg

Rotate 90 degrees:

./build/bin/image_process rotate -d 90 -i input.jpg -o rotated.jpg

Library Targets​

CMake targets:

  • aiden_image: Static library;
  • image_process: CLI.

Main source files:

  • src/image_process.cpp
  • src/image_process.h
  • src/image_process_cli.cpp