REGION MERGING AND CODING PARAMETER REUSE VIA MERGING INHERITANCE IN SAMPLE ARRAY MULTITREE DIVISION
First Claim
1. A decoder for decoding arrays of information samples encoded in a data stream each representing a picture at a resolution level, the decoder comprising:
- an extractor configured forextracting, from the data stream, a merge indicator with respect to a region currently being decoded within an array of information samples, wherein the region currently being decoded is one of a plurality of regions obtained by dividing the array of information samples and the merge indicator is indicative of whether the region currently being decoded is to be reconstructed based on at least one coding parameter determined based on one or more coding parameters associated with a selected candidate region of the resolution level,identifying a set of candidate regions of the resolution level with respect to the region currently being decoded,if a number of candidate regions in the set is greater than one, extracting a candidate identifier from the data stream, andselecting the selected candidate region from the set of candidate regions in accordance with the candidate identifier; and
a reconstructor configured forcopying, if the merge indicator specifies to copy, the at least one coding parameter from the one or more coding parameters,computing, if the merge indicator specifies to compute, the at least one coding parameter based on the one or more coding parameters, andreconstructing the region currently being decoded based on the at least one coding parameter.
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Accused Products
Abstract
A favorable merging or grouping of simply connected regions into which the array of information samples is sub-divided, is coded with a reduced amount of data. To this end, a predetermined relative locational relationship is defined enabling an identifying, for a predetermined simply connected region, of simply connected regions within the plurality of simply connected regions which have the predetermined relative locational relationship to the predetermined simply connected region. Namely, if the number is zero, a merge indicator for the predetermined simply connected region may be absent within the data stream. In other embodiments, spatial sub-division is performed depending on a first subset of syntax elements, followed by combining spatially neighboring simply connected regions depending on a second subset of syntax elements, to obtain an intermediate sub-division.
50 Citations
30 Claims
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1. A decoder for decoding arrays of information samples encoded in a data stream each representing a picture at a resolution level, the decoder comprising:
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an extractor configured for extracting, from the data stream, a merge indicator with respect to a region currently being decoded within an array of information samples, wherein the region currently being decoded is one of a plurality of regions obtained by dividing the array of information samples and the merge indicator is indicative of whether the region currently being decoded is to be reconstructed based on at least one coding parameter determined based on one or more coding parameters associated with a selected candidate region of the resolution level, identifying a set of candidate regions of the resolution level with respect to the region currently being decoded, if a number of candidate regions in the set is greater than one, extracting a candidate identifier from the data stream, and selecting the selected candidate region from the set of candidate regions in accordance with the candidate identifier; and a reconstructor configured for copying, if the merge indicator specifies to copy, the at least one coding parameter from the one or more coding parameters, computing, if the merge indicator specifies to compute, the at least one coding parameter based on the one or more coding parameters, and reconstructing the region currently being decoded based on the at least one coding parameter. - View Dependent Claims (2, 3, 4, 5, 6, 25, 26)
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7. A method of decoding arrays of information samples encoded in a data stream each representing a picture at a resolution level, the method comprising:
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extracting, from the data stream, a merge indicator with respect to a region currently being decoded within an array of information samples, wherein the region currently being decoded is one of a plurality of regions obtained by dividing the array of information samples and the merge indicator is indicative of whether the region currently being decoded is to be reconstructed based on at least one coding parameter determined based on one or more coding parameters associated with a selected candidate region of the resolution level, identifying a set of candidate regions of the resolution level with respect to the region currently being decoded, if a number of candidate regions in the set is greater than one, extracting a candidate identifier from the data stream, and selecting the selected candidate region from the set of candidate regions in accordance with the candidate identifier; copying, if the merge indicator specifies to copy, the at least one coding parameter from the one or more coding parameters; computing, if the merge indicator specifies to compute, the at least one coding parameter based on the one or more coding parameters; and reconstructing the region currently being decoded based on the at least one coding parameter. - View Dependent Claims (8, 9, 10, 11, 12, 27, 28)
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13. An encoder for encoding arrays of information samples into a data stream, each array representing a picture at a resolution level into a data stream, the encoder comprising:
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a sub-divider configured for dividing the array of information samples into a plurality of regions; and a data stream generator configured for encoding, into the data stream, a merge indicator with respect to one of the plurality of regions that is currently being coded, wherein the merge indicator is indicative of whether the region currently being coded is to be reconstructed based on at least one coding parameter determined based on one or more coding parameters associated with a selected candidate region selected from a set of candidate regions of the resolution level, identified with respect to the region currently being coded, encoding, into the data stream, a candidate identifier that identifies a specific one of the set of candidate regions as the selected candidate region, if a number of candidate regions in the set is greater than one, copying, if the merge indicator specifies to copy, the at least one coding parameter from the one or more coding parameters, computing, if the merge indicator specifies to compute, the at least one coding parameter based on the one or more coding parameters, and encoding, into the data stream, the one or more coding parameters associated with the selected candidate region. - View Dependent Claims (14, 15, 16, 17, 18, 29)
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19. A non-transitory computer-readable medium for storing data associated with a video, comprising:
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a data stream stored in the non-transitory computer-readable medium, the data stream comprising encoded information including arrays of information samples each representing a picture at a resolution level, the data stream further comprising, a merge indicator with respect to a region currently being decoded within an array of information samples, wherein the region currently being decoded is one of a plurality of regions obtained by dividing the array of information samples and the merge indicator is indicative of whether the region currently being decoded is to be reconstructed based on at least one coding parameter determined based on one or more coding parameters associated with a selected candidate region of the resolution level, identified with respect to the region; a candidate identifier that identifies a specific one of the set of candidate regions as the selected candidate region, if a number of candidate regions in the set is greater than one; and one or more coding parameter associated with the selected candidate region, from which the at least one coding parameter is copied or computed, determined based on the state of the merge indicator, and used to reconstruct the region. - View Dependent Claims (20, 21, 22, 23, 24, 30)
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Specification