Patent ID: 9681139
Date: 2017-06-13
CPC Classifications: H04N

Claim:
1. A region of interest (ROI) coding method using variable block size coding information comprising: partitioning a maximum coding unit (LCU) block obtained from an image frame into coding unit (CU) blocks; and for each coding unit (CU) block, obtaining the quantization parameter of the coding unit (CU) block by assigning a value of its quantization parameter based on first hierarchical depth information and second hierarchical depth information by determining its quantization parameter using the first hierarchical depth information related to the size of the coding unit (CU) block and the second hierarchical depth information related to the size of a prediction unit (PU) block corresponding to the partition of the coding unit (CU) block, wherein if the first information related to the size of the coding unit (CU) block and the second hierarchical depth information related to the size of the prediction unit (PU) block are great, then the quantization parameter is determined small.