公开(公告)号：US20180152711A1

公开(公告)日：2018-05-31

申请号：US15819027

申请日：2017-11-21

Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Myung Hoon SUNWOO ,  Jong Hyun BAE

IPC: H04N19/147 ,  H04N19/172 ,  H04N19/119

CPC classification number: H04N19/147 ,  H04N19/119 ,  H04N19/157 ,  H04N19/172 ,  H04N19/176 ,  H04N19/196 ,  H04N19/96

Abstract: Provided is a history based CU depth determining method. A history based CU depth determining method according to an exemplary embodiment of the present disclosure is a method for determining depths of a plurality of coding units (CU) included in each of a plurality of coding tree units (CTU) which configures a frame of a video, including: dividing a plurality of previous CTUs of a plurality of previous frames which are the same position as a current CTU of a current frame into a plurality of areas to generate depth history information including information of a CU depth for each of the plurality of areas; determining a plurality of depth candidates for a CU depth for each of the plurality of areas of the current CTU, based on the depth history information; and selecting an optimal CU depth among the plurality of depth candidates for each of the plurality of areas of the current CTU, through a rate-distortion cost (RD-cost) calculation.