| 摘要 |
PROBLEM TO BE SOLVED: To provide layer decomposition in hierarchical VDR coding.SOLUTION: A base layer and one or more enhancement layers are used to carry video signals. The base layer cannot be decoded and viewed by itself. Lower bit depth input image data to base layer processing is generated from higher bit depth high dynamic range input image data via advanced quantization to minimize the volume of image data to be carried by enhancement layer video signals. The image data in the enhancement layer video signals comprises residual values, quantization parameters, and mapping parameters based in part on a prediction method corresponding to a specific method used in the advanced quantization. Adaptive dynamic range adaptation techniques take into consideration special transition effects, such as fade-in and fade-outs, for improved coding performance. |
