Invention Grant
- Patent Title: Signalling of filtering information
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Application No.: US16524955Application Date: 2019-07-29
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Publication No.: US10887604B2Publication Date: 2021-01-05
- Inventor: Marta Karczewicz , Li Zhang , Wei-Jung Chien
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: H04N19/159
- IPC: H04N19/159 ; H04N19/117 ; H04N19/105 ; H04N19/107 ; H04N19/187 ; H04N19/176 ; H04N19/196 ; H04N19/463 ; H04N19/174 ; H04N19/80 ; H04N19/10 ; H04N19/70 ; H04N19/60 ; H04N19/61

Abstract:
A video decoder is configured to, for a group of video blocks of the video data, determine a number of merged groups for a plurality of classes is equal to one merged group; receive a first flag indicating that filter coefficient information for at least one merged group is not coded in the video data; receive for the one merged group, a second flag, wherein a first value for the second flag indicates that filter coefficient information mapped to the one merged group is coded in the video data, and wherein a second value for the second flag indicates that the filter coefficient information mapped to the one merged group is all zero values; determine the second flag is equal to the second value; and determine one or more filters from the set of filters using the all zero values.
Information query