US 12,192,458 B2 · Uniform segment split

Abstract

A method for decoding a picture from a bitstream. The picture comprising a number of units, and the picture being partitioned into a number of spatial segments by a partition structure. The method includes decoding one or more code words in the bitstream; determining that the partition structure is uniform based on the one or more code words; determining the number of spatial segments based on the one or more code words; determining a segment unit size; and deriving the sizes and/or locations for spatial segments in the picture from the one or more code words. Deriving the sizes and/or locations for spatial segments in the picture comprises a first loop over the number of spatial segments in a first dimension or direction. A number of remaining segment units in the first dimension or direction to be segmented is calculated inside the first loop.

Claims16

Dependent claims

A method for decoding a picture, the picture being divided into one or more tile rows and one or more tile columns, the one or more tile columns comprising a first tile column and the one or more tile rows comprising a first tile row, the method comprising:

obtaining a picture width value (PicWidth) indicating a width of the picture;
initializing a loop variable to an initial value;
after initializing a loop variable to an initial value, determining whether the value of the loop variable satisfies a condition;
and
as a result of determining that the value of the loop variable satisfies the condition, performing a process comprising:
i) setting a first column width variable associated with the first tile column equal to a first width value specifying a width of the first tile column;
and
ii) calculating a remaining width value by subtracting the first width value from the picture width value.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/118,481Filed 7 Mar 2023 · continuation

Priority

20 Dec 2018

Published

US 2023/0283774 A17 Sep 2023

Granted

7 Jan 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04N 19/119
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: adaptive subdivision aspects, e.g. subdivision…
H04N 19/159
Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter:…
H04N 19/172
The unit being an image region, e.g. an object: the region being a picture, frame or field
H04N 19/176
The unit being an image region, e.g. an object: the region being a block, e.g. a macroblock

Family

Application62/782,571Us provisional application · filed 20 Dec 2018

PCT/SE2019/051323Parent of this continuation · filed 19 Dec 2019

US 2023/0283774 A1Pre-grant publication · published 7 Sep 2023

Application17/415,131Parent of this continuation

US 11,606,555 B2Parent of this continuation

US 2022/0053187 A1Published application

US 12,192,458 B2This patent

From the US filing history. Foreign family members aren’t listed.

Uniform segment split

Life of this patent

Uniform segment split

Life of this patent

Abstract

Claims16