ADAPTIVE INTRA-PREDICTION ENCODING AND DECODING METHOD

摘要

Disclosed is an adaptive intra-prediction encoding and decoding method. The adaptive intra-prediction encoding method comprises the following steps: providing a prediction unit to be encoded; determining the total number of prediction modes for intra-prediction in accordance with the size of the prediction unit; selecting a certain prediction mode on the basis of the displacement of a reference pixel among the determined total number of the prediction modes, and performing intra-prediction using the selected prediction mode; and transforming and quantizing the residual value, which is the difference between the prediction unit predicted by the intra-prediction and the current prediction unit, and entropy-encoding the transformed and quantized value. Thus, rate-distortion may be optimized and image quality and encoding speed may be improved.

主权项

1. A video encoding method comprising the steps of:
performing, when an intra-prediction mode is a planar prediction mode, an intra-prediction by applying the planar mode; and performing transform and quantization on a residue, the residue being a difference between a current prediction unit and a prediction unit predicted by the intra-prediction and to perform an entropy-encoding on a result of the transform and the quantization, wherein the prediction unit corresponds to a leaf coding unit when a coding unit is split and reaches a maximum permissible depth.