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 encoded video information, information related to first and second maximum region sizes, first and second subdivision information, and a maximum hierarchy level 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, anddetermine, 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-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 the maximum hierarchy level; 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.
-
Citations
16 Claims
-
1. A decoder comprising:
-
an extractor configured to extract, from a data stream representing encoded video information, information related to first and second maximum region sizes, first and second subdivision information, and a maximum hierarchy level 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, and 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; 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 the maximum hierarchy level; 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)
-
-
12. A method for decoding comprising:
-
extracting, from a data stream representing encoded video information, information related to first and second maximum region sizes, first and second subdivision information, and a maximum hierarchy level, 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 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 and the maximum hierarchy level; 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 (15)
-
-
13. 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 maximum hierarchy level; 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 maximum hierarchy level, and the 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.
-
-
14. A method for encoding comprising:
-
dividing 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-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 first subdivision information; determining 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, 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 second subdivision information and a maximum hierarchy level; 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 maximum hierarchy level, and the 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. - View Dependent Claims (16)
-
Specification