公开(公告)号：US20130215963A1

公开(公告)日：2013-08-22

申请号：US13882067

申请日：2011-10-26

Applicant: Chun Ku Yie ,  Min Sung Kim ,  Ul Ho Lee

Inventor： Chun Ku Yie ,  Min Sung Kim ,  Ul Ho Lee

IPC: H04N7/26

CPC classification number: H04N19/124 ,  H04N19/11 ,  H04N19/14 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/61 ,  H04N19/91

Abstract: 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.