METHOD AND APPARATUS FOR ROI CODING USING VARIABLE BLOCK SIZE CODING INFORMATION

摘要

A video/image compression solution based on a region of interest (ROI) can be performed in a variable block video encoder such as an HEVC. An ROI coding method using variable block size coding information partitions a maximum coding unit block obtained from an image into coding unit blocks. To obtain a quantization parameter of each coding unit block, the value of the quantization parameter is determined by using a first depth information related to the size of the coding unit block and a second depth information related to the size of a prediction unit block correspondingly represented in consequence of the partition of the coding unit block. Different quantization parameter values are assigned to the coding unit blocks depending on the first depth information and the second depth information.