# US 12,192,465 B2 · Sub-picture based raster scanning coding order > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,465 B2 - Document ID: US12192465B2 - Status: Granted - Kind: B2 - Application number: 18/382,132 - Filed: 2023-10-20 - Published: 2024-02-08 - Granted: 2025-01-07 - Earliest claimed: 2010-07-08 - Assignees: Texas Instruments Incorporated - Applicants: Texas Instruments Incorporated - Inventors: Minhua Zhou - Web page: https://patentgrep.com/patent/US12192465B2 ## CPC - H04N 19/129: Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO] - H04N 19/119: Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks - H04N 19/174: the region being a slice, e.g. a line of blocks or a group of blocks - H04N 19/433: characterised by techniques for memory access - H04N 19/436: using parallelised computational arrangements - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A method and apparatus for sub-picture based raster scanning coding order. The method includes dividing an image into even sub-pictures, and encoding parallel sub-pictures on multi-cores in raster scanning order within sub-pictures, wherein from core to core, coding of the sub-picture is independent around sub-picture boundaries, and wherein within a core, coding of a sub-picture is at least one of dependent or independent around sub-picture boundaries. ## Claims ### Claim 1 A system comprising: a receiver configured to receive a bit stream including a coded representation of a picture; and one or more processors configured to: determine a first position for a single non-overlapping region in the picture based on a first scan order, wherein the picture includes: a first sub-picture having a first set of non-overlapping regions; and a second sub-picture having a second set of non-overlapping regions; determine that the first sub-picture contains the single non-overlapping region; and determine a second position of the single non-overlapping region in the first sub-picture based on the first position and based on a second scan order, wherein the second scan order is based on a position of the single non-overlapping region in the first sub-picture. ### Claim 2 (depends on 1) The system of claim 1, wherein the first sub-picture is rectangular, and wherein the second sub-picture is rectangular. ### Claim 3 (depends on 1) The system of claim 1, wherein the first scan order comprises a picture-based raster scan order, and wherein the second scan order comprises a sub-picture-based raster scan order. ### Claim 4 (depends on 1) The system of claim 1, wherein the one or more processors include: a first processing core configured to decode the first sub-picture; and a second processing core configured to decode the second sub-picture in parallel with the second processing core decoding the second sub-picture. ### Claim 5 (depends on 1) The system of claim 1, wherein the first sub-picture comprises a first tile in the picture, and wherein the second sub-picture comprises a second tile in the picture. ### Claim 6 (depends on 1) The system of claim 1, wherein the first sub-picture and the second sub-picture are signaled sequentially in the bit stream. ### Claim 7 (depends on 1) The system of claim 1, wherein coding of the first sub-picture and coding of the second sub-picture are independent around sub-picture boundaries. ### Claim 8 A method comprising: determining a first position for a single non-overlapping region in a picture based on a first scan order, wherein the picture includes: a first sub-picture having a first set of non-overlapping regions; and a second sub-picture having a second set of non-overlapping regions; determining that the first sub-picture contains the single non-overlapping region; and determining a second position of the single non-overlapping region in the first sub-picture based on the first position and based on a second scan order, wherein the second scan order is based on a position of the single non-overlapping region in the first sub-picture. ### Claim 9 (depends on 8) The method of claim 8, wherein the first sub-picture is rectangular, and wherein the second sub-picture is rectangular. ### Claim 10 (depends on 8) The method of claim 8, wherein the first scan order comprises a picture-based raster scan order, and wherein the second scan order comprises a sub-picture-based raster scan order. ### Claim 11 (depends on 8) The method of claim 8, further comprising: decoding the first sub-picture on a first processing core; and decoding the second sub-picture on a second processing core, wherein the decoding of the first sub-picture is performed in parallel with decoding of the second sub-picture. ### Claim 12 (depends on 8) The method of claim 8, wherein the first sub-picture comprises a first tile in the picture, and wherein the second sub-picture comprises a second tile in the picture. ### Claim 13 (depends on 8) The method of claim 8, wherein the first sub-picture and the second sub-picture are signaled sequentially in a bit stream, and wherein the bit stream includes a coded representation of the picture. ### Claim 14 (depends on 8) The method of claim 8, wherein coding of the first sub-picture and coding of the second sub-picture are independent around sub-picture boundaries. ### Claim 15 A non-transitory computer-readable medium having executable instructions stored thereon, configured to be executable by one or more processors circuitry for causing the one or more processors to: determine a first position for a single non-overlapping region in a picture based on a first scan order, wherein the picture includes: a first sub-picture having a first set of non-overlapping regions; and a second sub-picture having a second set of non-overlapping regions; determine that the first sub-picture contains the single non-overlapping region; and determine a second position of the single non-overlapping region in the first sub-picture based on the first position and based on a second scan order, wherein the second scan order is based on a position of the single non-overlapping region in the first sub-picture. ### Claim 16 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the first sub-picture is rectangular, and wherein the second sub-picture is rectangular. ### Claim 17 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the first scan order comprises a picture-based raster scan order, and wherein the second scan order comprises a sub-picture-based raster scan order. ### Claim 18 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the instructions are executable by the one or more processors for further causing the one or more processors to: cause a first processing core to decode the first sub-picture; and cause a second processing core to decode the second sub-picture in parallel with the second processing core decoding the second sub-picture. ### Claim 19 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the first sub-picture comprises a first tile in the picture, and wherein the second sub-picture comprises a second tile in the picture. ### Claim 20 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the first sub-picture and the second sub-picture are signaled sequentially in a bit stream, and wherein the bit stream includes a coded representation of the picture.