Invert the color of an AVCaptureSession

Question

I am looking to invert the color of the screen in my app while using the camera. However, I do not know if (1) it is possible and (2) how to do it if it is.

Thanks!

Answer 1

you can use Core Image to do this or you can use Brad Larson's great framework GPUImage

to do a lot of video effects easily, the framework includes a lot of examples take a look.

Answer 2

Well, you can try to use Core Image , which has a filter called CIColorInvert . I'm not sure that it will work with camera, but it is worth to give it a try. Here a some links, that you might find helpful:

• Core Image filters ,
• Tutorial by Ray Wenderlich: Beginning Core Image in iOS 5 .

Besides it, have a look at this answer .

Hope this helps!