Invention Grant
- Patent Title: Methods and apparatus for determining quantization parameter predictors from a plurality of neighboring quantization parameters
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Application No.: US16918069Application Date: 2020-07-01
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Publication No.: US11381818B2Publication Date: 2022-07-05
- Inventor: Xiaoan Lu , Joel Sole , Peng Yin , Qian Xu , Yunfei Zheng
- Applicant: INTERDIGITAL VC HOLDINGS, INC.
- Applicant Address: US DE Wilmington
- Assignee: INTERDIGITAL VC HOLDINGS, INC.
- Current Assignee: INTERDIGITAL VC HOLDINGS, INC.
- Current Assignee Address: US DE Wilmington
- Agent Ronald Kolczynski
- Main IPC: G06V10/20
- IPC: G06V10/20 ; G06V10/46 ; H04N19/124 ; H04N19/196 ; H04N19/61 ; H04N19/126 ; H04N19/176 ; H04N19/157 ; H04N19/51 ; H04N19/593 ; H04N19/174 ; H04N19/513 ; H04N19/52 ; H04N19/139

Abstract:
Methods and apparatus are provided for determining quantization parameter predictors from a plurality of neighboring quantization parameters. An apparatus includes an encoder for encoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data. The quantization parameter predictor is determined using multiple quantization parameters from previously coded neighboring portions. A difference between the current quantization parameter and the quantization parameter predictor is encoded for signaling to a corresponding decoder.
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