3D Color CLUT Compression by Multi-scale Anisotropic Diffusion

David Tschumperlé, Christine Porquet, Amal Mahboubi

Abstract: 3D CLUTs (Color Look Up Tables) are popular digital models used in image and video processing for color grading, simulation of analog films, and more generally for the application of various color transformations. The large size of these models leads to data storage issues when trying to distribute them on a large scale. Here, a highly effective lossy compression technique for 3D CLUTs is proposed. It is based on a multi-scale anisotropic diffusion scheme. Our method exhibits an average compression rate of more than $$99\%$$ , while ensuring visually indistinguishable differences with the application of the original CLUTs.