Filtering methods for intra prediction
OwnerJie CHEN, Yan YE +2inventors
InventorsJie CHEN, Yan YE, Ru-Ling LIAO, Xinwei LI
Life of this patent
Estimating the term…
Abstract
The present disclosure provides intra prediction methods for video or image coding. An exemplary method includes: performing an intra predicting process for a target block, wherein performing the intra predicting process comprises: determining an intra prediction mode for the target block; in response to the intra prediction mode is an angular mode, determining a filtered value by applying an N-tap interpolation filter to a plurality of reference samples surrounding the target block based on the angular mode, wherein N is an integer greater than 4; and determining a predicted value of a sample of the target block based on the filtered value.
Claims18
A computer-implemented video decoding method, comprising:
- decoding a bitstream to generate decoded information associated with a picture;
- and
- performing an intra predicting process on the decoded information, to reconstruct a target block, wherein performing the intra predicting process comprises:
- determining an intra prediction mode for the target block;
- in response to the intra prediction mode is a bilinear mode, determining a first value based on a weighted combination of a plurality of top reference samples and a second value based on a weighted combination of a plurality of left reference samples, wherein the plurality of the top reference samples comprises more than one reference sample and the plurality of the left reference samples comprises more than one reference sample;
- and
- determining a predicted value of a sample of the target block based on the first value and the second value.
A computer-implemented video encoding method, comprising:
- performing an intra predicting process on a picture, to generate information for predicting a target block;
- and
- encoding the information for predicting the target block into a bitstream,
- wherein performing the intra predicting process comprises:
- determining an intra prediction mode for the target block;
- in response to the intra prediction mode is a bilinear mode, determining a first value based on a weighted combination of a plurality of top reference samples and a second value based on a weighted combination of a plurality of left reference samples, wherein the plurality of the top reference samples comprises more than one reference sample and the plurality of the left reference samples comprises more than one reference sample;
- and
- determining a predicted value of a sample of the target block based on the first value and the second value.
A non-transitory computer-readable storage medium storing a bitstream associated with a picture, wherein the bitstream comprises:
- coded information for performing an intra predicting process to reconstruct a target block, wherein performing the intra predicting process comprises:
- determining an intra prediction mode for the target block;
- in response to the intra prediction mode is a bilinear mode, determining a first value based on a weighted combination of a plurality of top reference samples and a second value based on a weighted combination of a plurality of left reference samples, wherein the plurality of the top reference samples comprises more than one reference sample and the plurality of the left reference samples comprises more than one reference sample;
- and
- determining a predicted value of a sample of the target block based on the first value and the second value.
Dependencies are inferred from the claim text.