Template-based intra mode derivation with wide angle intra prediction
AssigneeInterDigital CE Patent Holdings, SAS
InventorsThierry Dumas, Kevin Reuzé, Franck Galpin, Karam Naser
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Abstract
Systems, methods, and instrumentalities are disclosed for performing video coding to derive intra prediction modes for predicting a current block using TIMD with wide-angle intra prediction (WAIP). A most probable mode (MPM) list associated with a current block may be obtained. A test list of intra prediction modes may be determined from the MPM list. A first intra prediction mode may be tested, and the first intra prediction mode may be excluded from the test list or disallowed to be tested due to WAIP substitution. A prediction for the current block may be generated based on the tested intra prediction mode. The current block may be decoded using the prediction.
Claims20
A video decoding device comprising a processor, wherein the processor is further configured to:
- obtain a most probable mode (MPM) list associated with a current block;
- determine a test list of intra prediction modes from the MPM list;
- test a first intra prediction mode, wherein the first intra prediction mode is excluded from the test list due to wide-angle intra prediction (WAIP) substitution or disallowed to be tested due to WAIP substitution;
- generate a prediction for the current block based on the tested intra prediction mode;
- and
- decode the current block using the prediction.
A video decoding method, wherein the method comprises:
- obtaining a most probable mode (MPM) list associated with a current block;
- determining a test list of intra prediction modes from the MPM list;
- testing a first intra prediction mode, wherein the first intra prediction mode is excluded from the test list due to wide-angle intra prediction (WAIP) substitution or disallowed to be tested due to WAIP substitution;
- generating a prediction for the current block based on the tested intra prediction mode;
- and
- decoding the current block using the prediction.
A video encoding method, wherein the method comprises:
- obtaining a most probable mode (MPM) list associated with a current block;
- determining a test list of intra prediction modes from the MPM list;
- testing a first intra prediction mode, wherein the first intra prediction mode is excluded from the test list due to wide-angle intra prediction (WAIP) substitution or disallowed to be tested due to WAIP substitution;
- generating a prediction for the current block based on the tested intra prediction mode;
- and
- encoding the current block using the prediction.
Dependencies are inferred from the claim text.