Coding of a spatial sampling of a two-dimensional information signal using sub-division
First Claim
Patent Images
1. A decoder comprising:
- an extractor configured to extract, from a data stream representing video information, information related to first and second maximum region sizes and first and second subdivision information, wherein the first maximum region size and the first subdivision information are associated with prediction coding and the second maximum region size and the second subdivision information are associated with transform coding;
a divider configured to;
divide an array of information samples representing a spatially sampled portion of the video information into a first set of root regions based on the first maximum region size,sub-divide at least some of the first set of root regions into a first set of sub-regions using recursive multi-tree partitioning based on the first subdivision information,determine whether a size of at least one of the first set of sub-regions exceeds the second maximum region size,responsive to a determination that the size of at least one of the first set of sub-regions does exceed the second maximum region size, divide at least one of the first set of sub-regions into a second set of root regions of the second maximum region size,determine, for each of the second set of root regions of the second maximum region size, whether the respective root region of the second set of root regions is to be sub-divided, andresponsive to a determination that the respective root region of the second set of root regions is to be sub-divided, sub-divide the respective root region of the second set of root regions into a second set of sub-regions using recursive multi-tree partitioning based on the second subdivision information; and
a reconstructor configured to reconstruct the array of information samples using prediction coding in accordance with the first set of sub-regions and transform coding in accordance with the second set of sub-regions.
2 Assignments
0 Petitions
Accused Products
Abstract
Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.
183 Citations
30 Claims
-
1. A decoder comprising:
-
an extractor configured to extract, from a data stream representing video information, information related to first and second maximum region sizes and first and second subdivision information, wherein the first maximum region size and the first subdivision information are associated with prediction coding and the second maximum region size and the second subdivision information are associated with transform coding; a divider configured to; divide an array of information samples representing a spatially sampled portion of the video information into a first set of root regions based on the first maximum region size, sub-divide at least some of the first set of root regions into a first set of sub-regions using recursive multi-tree partitioning based on the first subdivision information, determine whether a size of at least one of the first set of sub-regions exceeds the second maximum region size, responsive to a determination that the size of at least one of the first set of sub-regions does exceed the second maximum region size, divide at least one of the first set of sub-regions into a second set of root regions of the second maximum region size, determine, for each of the second set of root regions of the second maximum region size, whether the respective root region of the second set of root regions is to be sub-divided, and responsive to a determination that the respective root region of the second set of root regions is to be sub-divided, sub-divide the respective root region of the second set of root regions into a second set of sub-regions using recursive multi-tree partitioning based on the second subdivision information; and a reconstructor configured to reconstruct the array of information samples using prediction coding in accordance with the first set of sub-regions and transform coding in accordance with the second set of sub-regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method comprising:
-
extracting, from a data stream representing video information, information related to first and second maximum region sizes and first and second subdivision information, wherein the first maximum region size and the first subdivision information are associated with prediction coding and the second maximum region size and the second subdivision information are associated with transform coding; dividing an array of information samples representing a spatially sampled portion of the video information into a first set of root regions based on the first maximum region size; sub-dividing at least some of the first set of root regions into a first set of sub-regions using recursive multi-tree partitioning based on the first subdivision information; determining whether a size of at least one of the first set of sub-regions exceeds the second maximum region size; responsive to a determination that the size of at least one of the first set of sub-regions does exceed the second maximum region size, dividing at least one of the first set of sub-regions into a second set of root regions of the second maximum region size; determining, for each of the second set of root regions of the second maximum region size, whether the respective root region of the second set of root regions is to be sub-divided; responsive to a determination that the respective root region of the second set of root regions is to be sub-divided, sub-dividing the respective root region of the second set of root regions into a second set of sub-regions using recursive multi-tree partitioning based on the second subdivision information; and reconstructing the array of information samples using prediction coding in accordance with the first set of sub-regions and transform coding in accordance with the second set of sub-regions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An encoder comprising:
-
a divider configured to; divide an array of information samples representing a spatially sampled portion of video information into a first set of root regions based on a first maximum region size, sub-divide at least some of the first set of root regions into a first set of sub-regions using recursive multi-tree partitioning based on first subdivision information, determine whether a size of at least one of the first set of sub-regions exceeds a second maximum region size, responsive to a determination that the size of at least one of the first set of sub-regions does exceed the second maximum region size, divide the at least one of the first set of sub-regions into a second set of root regions of the second maximum region size, determine, for each of the second set of root regions of the second maximum region size, whether the respective root region of the second set of root regions is to be sub-divided, and responsive to a determination that the respective root region of the second set of root regions is to be sub-divided, sub-divide the respective root region of the second set of root regions into a second set of sub-regions using recursive multi-tree partitioning based on second subdivision information; and a data stream generator configured to; encode the array of information samples using prediction coding in accordance with the first set of sub-regions and transform coding in accordance with the second set of sub-regions, and insert into a data stream the encoded array of information samples, information related to the first and second maximum region sizes and the first and second subdivision information, wherein the first maximum region size and the first subdivision information are associated with the prediction coding and the second maximum region size and the second subdivision information are associated with the transform coding. - View Dependent Claims (21, 22, 23, 24, 25)
-
-
26. A non-transitory computer-readable medium for storing data associated with a video, comprising:
-
a data stream stored in the non-transitory computer-readable medium, the data stream comprising encoded information associated with an array of information samples representing a spatially sampled portion of the video, the encoded information including information related to first and second maximum region sizes and first and second subdivision information, wherein the first maximum region size and the first subdivision information are associated with prediction coding and the second maximum region size and the second subdivision information are associated with transform coding, the encoded information is coded into the data stream by operations including; dividing an array of information samples representing a spatially sampled portion of video information into a first set of root regions based on the first maximum region size; sub-dividing at least some of the first set of root regions into a first set of sub-regions using recursive multi-tree partitioning based on the first subdivision information; determining whether a size of at least one of the first set of sub-regions exceeds the second maximum region size; responsive to a determination that the size of at least one of the first set of sub-regions does exceed the second maximum region size, dividing the at least one of the first set of sub-regions into a second set of root regions of the second maximum region size; determining, for each of the second set of root regions of the second maximum region size, whether the respective root region of the second set of root regions is to be sub-divided; responsive to a determination that the respective root region of the second set of root regions is to be sub-divided, sub-dividing the respective root region of the second set of root regions into a second set of sub-regions using recursive multi-tree partitioning based on the second subdivision information; encoding the array of information samples using prediction coding in accordance with the first set of sub-regions and transform coding in accordance with the second set of sub-regions; and inserting into a data stream the encoded array of information samples, information related to the first and second maximum region sizes and the first and second subdivision information. - View Dependent Claims (27, 28, 29, 30)
-
Specification