公开(公告)号：US11025911B2

公开(公告)日：2021-06-01

申请号：US16890292

申请日：2020-06-02

Applicant: Socionext Inc.

Inventor： Yoichi Azukizawa

IPC: H04N19/122 ,  H04N19/167 ,  H04N19/176 ,  H04N19/625

Abstract: An encoding method for encoding an image using an inter-picture prediction includes determining a prediction block on which the inter-picture prediction is to be performed, partitioning the prediction block into a plurality of transform blocks by a partitioning method that partitions the prediction block, so that boundaries of the plurality of transform blocks are symmetrical with respect to a horizontal line passing a center of the prediction block and are symmetrical with respect to a vertical line passing the center of the prediction block, the plurality of transform blocks being rectangular, and determining, for each of the plurality of transform blocks, an orthogonal transformation type used for each of a vertical direction and a horizontal direction of a given transform block of the plurality of transform blocks based on a positional relation between the given transform block and the center of the prediction block.