Spatial scalability in 3D sub-band decoding of SDMCTF-encoded video
First Claim
Patent Images
1. A method comprising:
- receiving video encoded by SDMCTF at a first spatial resolution; and
decoding at least part of the video with IBIMCTF for output at a second spatial resolution lower than the first spatial resolution, including performing interpolation for one or more reference pictures, wherein the interpolation is not in-band interpolation on buffered spatial low-pass sub-band information.
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Abstract
Techniques and tools are described for scalable video coding and decoding. For example, a 3D sub-band decoder receives video encoded using spatial-domain motion-compensated temporal filtering at a first spatial resolution. The decoder decodes at least part of the video for output at a second spatial resolution lower than the first spatial resolution. The decoder uses any of several techniques to improve performance by devoting extra computational resources to the decoding, devoting extra buffer resources to storing reference picture information, and/or considering spatial high-pass sub-band information.
159 Citations
20 Claims
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1. A method comprising:
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receiving video encoded by SDMCTF at a first spatial resolution; and
decoding at least part of the video with IBIMCTF for output at a second spatial resolution lower than the first spatial resolution, including performing interpolation for one or more reference pictures, wherein the interpolation is not in-band interpolation on buffered spatial low-pass sub-band information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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receiving video encoded by SDMCTF at a first spatial resolution; and
decoding at least part of the video with SDIMCTF for output at a second spatial resolution lower than the first spatial resolution, wherein one or more reference pictures for the SDIMCTF are reconstructed from received spatial low-pass sub-band information but not from received spatial high-pass sub-band information associated with resolution enhancement up to the first spatial resolution. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method comprising:
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receiving video encoded by SDMCTF at a first spatial resolution; and
decoding at least part of the video with SDIMCTF for output at a second spatial resolution lower than the first spatial resolution, wherein the decoding includes using spatial high-pass sub-band information associated with resolution enhancement up to the first spatial resolution to improve motion compensation performance in the SDIMCTF but not using the spatial high-pass sub-band information to enhance resolution up to the first spatial resolution. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification