Integrating Color Constancy into Multi-view Video Coding

Color constancy is the ability to remove the dependency of illuminant and show the intrinsic color of objects. A novel multi-view video coding scheme integrated with color constancy algorithms is introduced in this paper. Color constancy algorithms based on gray-edge hypothesis are selected. The new scheme takes color constancy as a preprocessing to make the sequence independent of the illuminant conditions. Based on the examination of the scene change in the sequence, the key frames are picked out and the parameters of color constancy are determined. The illuminant information is sent into the encoder along with the illuminant independent sequence, and then it is used to solve the color cast problem of multi-view coding at the decoder. Both visual quality and coding performance prove that this novel scheme can lower the bitrates and gain better color quality.