smartcrop-java

smartcrop implementation in Java

smartcrop finds good crops for arbitrary images and crop sizes, based on Jonas Wagner's smartcrop.js

Sample debug image

check more debug image

Performance

test code will analyze 12 images, analyze took 30ms 640x470.

done: 29386679.jpg / analyze took 1158ms
done: 32872321.jpg / analyze took 101ms
done: 65131509.jpg / analyze took 75ms
done: 65158073.jpg / analyze took 109ms
done: 65309527.jpg / analyze took 73ms
done: 65334383.jpg / analyze took 61ms
done: 65356729.jpg / analyze took 55ms
done: 65438769.jpg / analyze took 72ms
done: goodtimes.jpg / analyze took 31ms
done: guitarist.jpg / analyze took 31ms
done: img.jpg / analyze took 30ms
done: kitty.jpg / analyze took 30ms
saved... 29386679.jpg / took 1738ms
saved... 32872321.jpg / took 1475ms
saved... 65131509.jpg / took 1201ms
saved... 65158073.jpg / took 2170ms
saved... 65309527.jpg / took 2397ms
saved... 65334383.jpg / took 1063ms
saved... 65356729.jpg / took 1396ms
saved... 65438769.jpg / took 1359ms
saved... goodtimes.jpg / took 1264ms
saved... guitarist.jpg / took 1190ms
saved... img.jpg / took 702ms
saved... kitty.jpg / took 473ms

Example

check test code

BufferedImage img = ImageIO.read(new File("source.jpg"));

CropResult result = new SmartCrop().analyze(img);

ImageIO.write(result.getBufferedImage(), "png", new File("debug.png"));

Todo

• [ ] crop feature
• [ ] analyze after scale down for performance
• [ ] face detection
• [ ] remove alpha channel for jpg format