公开(公告)号：US20250150625A1

公开(公告)日：2025-05-08

申请号：US18400399

申请日：2023-12-29

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Yong Hwan KIM ,  Hyun-Ho KIM ,  Sung-Gyun LIM ,  Yura KIM

IPC: H04N19/597 ,  H04N19/119 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176

Abstract: Proposed are a method and apparatus for adjusting an adaptive patch packing block size of a multi-view video. The method may include receiving an initial patch packing block size as an input, and calculating a width and height of an atlas frame according to the patch packing block size. The method may also include performing patch packing according to the patch packing block size and a size of the atlas frame, and calculating a ratio of the number of valid pixels in patches that are not packed and discarded as a result of the patch packing. The method may further include adjusting adaptively the patch packing block size according to the calculated ratio of the number of valid pixels in the discarded patches, and re-performing the patch packing according to the adjusted patch packing block size.

公开(公告)号：US20240195947A1

公开(公告)日：2024-06-13

申请号：US18332596

申请日：2023-06-09

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Sung-Gyun LIM ,  Yong Hwan KIM ,  Hyun-Ho KIM ,  Yura KIM

IPC: H04N13/161 ,  H04N19/136

CPC classification number: H04N13/161 ,  H04N19/136

Abstract: A patch based depth mapping method and apparatus for high-efficiency encoding/decoding of a plenoptic video is proposed. The method may be performed in an electronic apparatus to classify a reference image and an additional image from a plenoptic video during encoding the plenoptic video and then generate an atlas including a patch using the additional image. The method may include mapping a depth value by applying minimum-maximum linear scaling in units of an input viewpoint image. The method may also include finding a minimum value and a maximum value of the depth value per the patch and remapping the depth value through minimum-maximum linear scaling.