公开(公告)号：US11290714B2

公开(公告)日：2022-03-29

申请号：US16424556

申请日：2019-05-29

Applicant: Korea Electronics Technology Institute

Inventor： Yong Hwan Kim ,  Ganzorig Gankhuyag ,  Jin Woo Jeong

IPC: H04N19/117 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/124 ,  H04N19/82 ,  H04N19/196 ,  H04N19/523

Abstract: There is provided a motion-constrained AV1 encoding method and apparatus for tile-based streaming of an ultra-high definition image, which encodes an image such that the image can be decoded by integrating tile-based segmented images at a bit stream level without modifying an AV1 standard decoder. According to an embodiment of the present disclosure, the motion-constrained encoding method includes: limiting a motion prediction range based on a format and a size of an image; and predicting motion vectors regarding tiles constituting the image, based on the limited motion prediction range. Accordingly, a tile-based streaming service is possible through motion-constrained AV1 encoding of an ultra-high definition image (360 VR image or panorama image). In addition, a consumer electronic device is enabled to integrate and decode segmented images by using a single standard AV1 decoder.