openFrameworks addon which enables Photoshop-style level adjustment for textures (images, video, anything you want). Contrast, saturation, brightness and gamma (with input and output control) are adjusteable via a GLSL shader (for performance).
Check out the examples for usage. When integrating into a new project, copy the "shaders/ps" directory and its contents into your bin/data directory.
- Built against oF 0.11.0