gpuimage
Luma Key (create alpha mask from image) for iOS
There is a reason why typically blue or green screens are used in movie production for chroma keying, instead of white. Anything can be white or sufficiently close to white in a photo, especially eyes or highlights or just parts of the skin. Also, it is quite hard to find an uniform white wall without … Read more
Android: Sugar ORM No Such Table Exception
I had the same problem, it’s related to Instant Run. Disable instant run, reinstall the application, and it works. See this link for details on how to enable or disable Instant Run.
How do I “subtract” a color filter using GPUImageLibrary?
Color matrix is the entity that defines new color component values for some pixel as linear functions of the current color components of the same pixel. I.e. the only input for color matrix conversion is the pixel, which colors should be transformed. There is no way to involve another pixels to such conversion. Regardless if … Read more