A demo project to show that Renderscript can be used to process and enhance images very effectively. This app lets you change Brightness and Contrast of an image using Rendescript. This app also provides an option to Auto Enhance the image. It tries to mimic Instagram's Lux feature (and fails horribly).
- Use unsharp mask method to make image sharper
- Implement a S-curve on RGB to increase contrast and get better colors (I tried applying S-curve on Saturation of HLS but RGB gives better results)
- I also tried histogram equalization on Y channel of YUV but it doesn't go with two other methods so chucked it at the end.
- It tries to copy Google Photos' editing UI with animations and reveal ripple (I implemented them myself)
- Change brightness and contrast. Code taken from https://github.com/LouisPeng/RenderScript-ImageFilter
- Auto Enhancement. Algorithm taken from here
- Histogram Equalization(Not used). Referrenced from here