objective-c - ios获取照片中的RGB颜色，通过算法划定需要取出的图形，生成新的照片；

Question

用户在拍摄一张照片后，app检测照片上的RGB把需要的图块抠出来；之后通过RGB校正算法补齐图片的颜色；

具体需求是一张照片在拍摄完成后，先检测偏色通过RGB转换为Lab。再通过Lab得出具体哪个颜色上有偏差，更具这个偏差的值修正照片上的每一个颜色。现在就是通过Lab得到每个颜色偏差的地方遇到困难了，望大家给点建议；谢谢！

Answer 1

CIFilter or GPUImage can both be implemented

Answer 2

There is an App called Bacterial Analyzer. It is very similar to what you are talking about. It was developed by my friend. If it is similar, I can give you his contact information

Answer 3

Owner, has the problem been solved? I am also encountering this problem now. I want to get the RGB of UIimage and then operate its pixels, but I cannot get the RGB!