公开(公告)号：US20180103251A1

公开(公告)日：2018-04-12

申请号：US15725300

申请日：2017-10-05

Applicant: Industrial Technology Research Institute

Inventor： Chun-Lung Lin ,  Ching-Chieh Lin ,  Po-Han Lin

IPC: H04N19/103 ,  H04N19/61 ,  H04N19/147

CPC classification number: H04N19/103 ,  H04N19/11 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/61

Abstract: A method for selecting a prediction mode of an intra prediction, a video encoding device and an image processing apparatus are provided. The method includes following steps. Multiple prediction costs corresponding to multiple prediction modes of the intra prediction are calculated according to a block of an input image in case that a transform unit transforms according to a default transform index. Multiple candidate prediction modes are selected from the prediction modes based on the prediction costs corresponding to the prediction modes. Multiple distortion costs corresponding to the candidate prediction modes under a plurality of transform indexes are calculated based on the block and the prediction costs corresponding to the candidate prediction modes. And, one of the candidate prediction modes is selected according to the distortion costs to serve as a prediction mode to be used of the intra prediction corresponding to the block.