Method for predicting disparity vector for interlayer video decoding and encoding apparatus and method
First Claim
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1. An interlayer video decoding method comprising:
- reconstructing, based on encoding information obtained from a bitstream, a first layer image and a first layer depth map;
determining whether a disparity vector is predictable using peripheral blocks of a second layer current block; and
when the disparity vector is not predictable using the peripheral blocks, determining a disparity vector of the second layer current block using a default disparity vector and the reconstructed first layer depth map;
wherein the determining of the disparity vector comprises;
determining a reference block of the first layer depth map, the reference block being indicated by the default disparity vector;
obtaining corner depth values of the reference block of the first layer depth map; and
determining the disparity vector of the second layer current block using at least one of the obtained corner depth values.
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Abstract
An interlayer video decoding method and apparatus and an interlayer video encoding method and apparatus are provided. The decoding method includes: reconstructing, based on encoding information obtained from a bitstream, a first layer image and a first layer depth map; determining whether a disparity vector is predictable using peripheral blocks of a second layer current block; and when the disparity vector is not predictable using the peripheral blocks, determining a disparity vector of the second layer current block using a default disparity vector and the reconstructed first layer depth map.
12 Citations
13 Claims
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1. An interlayer video decoding method comprising:
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reconstructing, based on encoding information obtained from a bitstream, a first layer image and a first layer depth map; determining whether a disparity vector is predictable using peripheral blocks of a second layer current block; and when the disparity vector is not predictable using the peripheral blocks, determining a disparity vector of the second layer current block using a default disparity vector and the reconstructed first layer depth map; wherein the determining of the disparity vector comprises; determining a reference block of the first layer depth map, the reference block being indicated by the default disparity vector; obtaining corner depth values of the reference block of the first layer depth map; and determining the disparity vector of the second layer current block using at least one of the obtained corner depth values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An interlayer video encoding method comprising:
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generating a bitstream including encoding information generated by encoding a first layer image and a first layer depth map; determining whether a disparity vector is predictable using peripheral blocks of a second layer current block; and when the disparity vector is not predictable using the peripheral blocks, determining a disparity vector of the second layer current block by using a default disparity vector and the first layer depth map, wherein the determining of the disparity vector comprises; determining a reference block of the first layer depth map, the reference block being indicated by the default disparity vector; obtaining corner depth values of the reference block of the first layer depth map; and determining the disparity vector of the second layer current block using at least one of the obtained corner death values. - View Dependent Claims (12)
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13. An interlayer video decoding apparatus comprising:
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a first layer decoder configured to reconstruct, based on encoding information obtained from a bitstream, a first layer image and a first layer depth map; and a disparity determiner configured to determine whether a disparity vector is predictable using peripheral blocks of a second layer current block, and when the disparity vector is not predictable using the peripheral blocks, determining a disparity vector of the second layer current block using a default disparity vector and the reconstructed first layer depth map, wherein the disparity determiner is further configured to determine a reference block of the first layer depth map, the reference block being indicated by the default disparity vector, obtain corner depth values of the reference block of the first layer depth map, and determine the disparity vector of the second layer current block using at least one of the obtained corner depth values.
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Specification