Tone mapping
Videos
Tone mapping is a technique used in image processing and computer graphics to map one set of colors to another to approximate the appearance of high-dynamic-range (HDR) images in a medium that has a more limited dynamic range. Print-outs, CRT or LCD monitors, and projectors all have a limited dynamic range that is inadequate to reproduce the full range of light intensities present in natural scenes. Tone mapping addresses the problem of strong contrast reduction from the scene radiance to the displayable range while preserving the image details and color appearance important to appreciate the original scene content.
The six individual exposures used to create the previous image. In the low exposure images, the room is dark and unclear, but the details of the windows are visible. In the high exposure images, the windows are bright and unclear, but the details of the room are revealed.
Cartoon-like appearance
Image: Bucket of fresh picked cherries
Gamma correction
Videos
Gamma correction or gamma is a nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems. Gamma correction is, in the simplest cases, defined by the following power-law expression:
