SCALABLE CODING OF VIDEO SEQUENCES USING TONE MAPPING AND DIFFERENT COLOR GAMUTS

摘要

A Scalable Video Coding (SVC) process is provided for scalable video coding that takes into account color gamut primaries along with spatial resolution. The process provides for re-sampling using video color data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to enable improved encoding and decoding in an enhancement layer (EL) or higher layers taking into account color conversion between layers. Examples of applicable SVC include MPEG-4 Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC). With the SVC process, video data expressed in one color gamut space can be used for prediction in encoding with a possibly different color space, and accommodation for different spatial resolution and bit-depth can be made as well.

主权项

1. A method for scalable video coding comprising:
receiving sampling signals from a video of the first coding layer and providing an output signal to a second coding layer that codes video with an enhanced resolution having a higher resolution than the base resolution; selecting a picture from the input samples of the video signal in the first coding layer for coding video with the base resolution; selecting either a plurality of filters or a mapping formula that converts a set of primary color values for a pixel in the picture with a primary color gamut in the first coding layer to a different set of color values making up a target color gamut that is suitable for presentation on a display used for the second coding layer that conforms to the target color gamut.