公开(公告)号：US20230232000A1

公开(公告)日：2023-07-20

申请号：US18188321

申请日：2023-03-22

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Geert VAN DER AUWERA ,  Luong PHAM VAN ,  Marta KARCZEWICZ

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: Techniques are described for improving intra-subpartitioning (ISP) mode for splitting coding blocks into sub-blocks. In some cases, whether ISP mode is enabled for a coding block is based on size constraints pertaining to data units (e.g., VPDUs, transform blocks, among others). For instance, based on a size constraint related to a VPDU, the ISP mode can be disabled for coding blocks crossing VPDU boundaries. In some cases, whether to enable ISP mode may be based on comparison of the width and/or height of the coding block to size thresholds corresponding to one or more maximum transform block sizes. In some cases, where the ISP mode is enabled for a coding block, a value of a flag used for defining a type of split, horizontal or vertical, for the coding block, can be inferred based on the width and/or height of the coding block relative to one or more thresholds.

公开(公告)号：US20200252608A1

公开(公告)日：2020-08-06

申请号：US16777732

申请日：2020-01-30

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Geert Van der Auwera ,  Luong PHAM VAN ,  Marta KARCZEWICZ

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/59 ,  H04N19/61 ,  H04N19/593

Abstract: Techniques are described for improving intra-subpartitioning (ISP) mode for splitting coding blocks into sub-blocks. In some cases, whether ISP mode is enabled for a coding block is based on size constraints pertaining to data units (e.g., VPDUs, transform blocks, among others). For instance, based on a size constraint related to a VPDU, the ISP mode can be disabled for coding blocks crossing VPDU boundaries. In some cases, whether to enable ISP mode may be based on comparison of the width and/or height of the coding block to size thresholds corresponding to one or more maximum transform block sizes. In some cases, where the ISP mode is enabled for a coding block, a value of a flag used for defining a type of split, horizontal or vertical, for the coding block, can be inferred based on the width and/or height of the coding block relative to one or more thresholds.