3D lookup table

They are commonly used to calculate preview colors for a monitor or digital projector of how an image will be reproduced on another display device, typically the final digitally projected image or release print of a movie.

[1] 3D LUTs are used extensively in the movie production chain, as part of the digital intermediate process.

[citation needed] The most common practice is to use RGB 10-bit/component log images as the input to the 3D LUT.

Output is usually[weasel words] RGB values that are to be placed unchanged into a display device's buffer.

graphics cards have direct support for 3D LUTs, allowing entire HD images to be processed at 60 fps or faster.