Information processing method and device, apparatus, and storage medium
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsShuai Wan, Junyan Huo, Yanzhuo Ma, Fuzheng Yang, Jinkun Guo
Life of this patent
Estimating the term…
Abstract
An information processing method and device, an apparatus, and a storage medium. The method includes: for inputted source video data, predicting a colour component of a coding block in the source video data according to a prediction mode to obtain a first prediction block, wherein the prediction mode is preset and is a Position-Dependent Prediction Combination (PDCP) mode; determining a difference between the colour component of the coding block and a prediction value of the first prediction block to obtain a residual block; and signalling the residual block and the prediction mode in a bitstream.
Claims8
A method for processing information, applied to a decoder, comprising:
- decoding a bitstream, obtaining a prediction mode, predicting a colour component of a coding block according to the prediction mode to obtain a prediction block, wherein the prediction mode is preset and is a Position-Dependent Prediction Combination (PDPC) mode, and wherein the prediction mode is a prediction mode with an index greater than or equal to a first numerical value and smaller than a second numerical value, wherein the first numerical value corresponds to a first direction in a special prediction mode diagram, and wherein the second numerical value corresponds to a second direction in the special prediction mode diagram, wherein the first direction corresponds to a maximum value in the special prediction mode diagram, and wherein the second direction corresponds to a minimum value in the special prediction mode diagram, and wherein the first direction is generally perpendicular to the second direction in the special prediction mode diagram so as to enable a selection from a wide range defined by the first direction and the second direction;
- refining the prediction block according to the prediction mode to obtain a refinement block;
- and
- decoding bitstream, and obtaining a sum of a residual block and the refinement block to obtain a reconstructed block;
- processing the reconstructed block, and
- outputting processed video data.
A method for processing information, applied to an encoder, comprising:
- predicting a colour component of a coding block according to a prediction mode to obtain a prediction block, wherein the prediction mode is preset and is a Position-Dependent Prediction Combination (PDPC) mode, and wherein the prediction mode is a prediction mode with an index greater than or equal to a first numerical value and smaller than a second numerical value, wherein the first numerical value corresponds to a first direction in a special prediction mode diagram, and wherein the second numerical value corresponds to a second direction in the special prediction mode diagram, wherein the first direction corresponds to a maximum value in the special prediction mode diagram, and wherein the second direction corresponds to a minimum value in the special prediction mode diagram, and wherein the first direction is generally perpendicular to the second direction in the special prediction mode diagram so as to enable a selection from a wide range defined by the first direction and the second direction;
- refining the prediction block according to the prediction mode to obtain a refinement block;
- and
- determining a difference between the coding block and the refinement block to obtain a residual block;
- and
- signalling the residual block and the prediction mode in a bitstream.
A video decoding apparatus, comprising a memory and a processor, wherein the memory stores a computer program which is runnable on the processor, and the processor implements following acts when executing the program:
- decoding a bitstream, obtaining a prediction mode, predicting a colour component of a coding block according to the prediction mode to obtain a prediction block, wherein the prediction mode is preset and is a Position-Dependent Prediction Combination (PDPC) mode, and wherein the prediction mode is a prediction mode with an index greater than or equal to a first numerical value and smaller than a second numerical value, wherein the first numerical value corresponds to a first direction in a special prediction mode diagram, and wherein the second numerical value corresponds to a second direction in the special prediction mode diagram, wherein the first direction corresponds to a maximum value in the special prediction mode diagram, and wherein the second direction corresponds to a minimum value in the special prediction mode diagram, and wherein the first direction is generally perpendicular to the second direction in the special prediction mode diagram so as to enable a selection from a wide range defined by the first direction and the second direction;
- refining the prediction block according to the prediction mode to obtain a refinement block;
- and
- decoding bitstream, and obtaining a sum of a residual block and the refinement block to obtain a reconstructed block;
- processing the reconstructed block, and outputting processed video data.
A video encoding apparatus, comprising a memory and a processor, wherein the memory stores a computer program which is runnable on the processor, and the processor implements following acts when executing the program:
- predicting a colour component of a coding block according to a prediction mode to obtain a prediction block, wherein the prediction mode is preset and is a Position-Dependent Prediction Combination (PDPC) mode, and wherein the prediction mode is a prediction mode with an index greater than or equal to a first numerical value and smaller than a second numerical value, wherein the first numerical value corresponds to a first direction in a special prediction mode diagram, and wherein the second numerical value corresponds to a second direction in the special prediction mode diagram, wherein the first direction corresponds to a maximum value in the special prediction mode diagram, and wherein the second direction corresponds to a minimum value in the special prediction mode diagram, and wherein the first direction is generally perpendicular to the second direction in the special prediction mode diagram so as to enable a selection from a wide range defined by the first direction and the second direction;
- refining the prediction block according to the prediction mode to obtain a refinement block;
- and
- determining a difference between the coding block and the refinement block to obtain a residual block;
- and
- signalling the residual block and the prediction mode in a bitstream.
Dependencies are inferred from the claim text.