Lossy data compression exploiting distortion side information
First Claim
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1. A method for performing lossy encoding comprising:
- receiving source data and quality information; and
mapping the source data into a compressed representation having a level of distortion in accordance with the quality information, wherein said compressed representation may be decoded without using said quality information.
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Abstract
Described are techniques for performing lossy encoding. Source data and quality data are received by an encoder. The encoder maps the source data into a compressed representation having a level of distortion in accordance with the quality information. The compressed representation may be decoded without using the quality information.
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Citations
40 Claims
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1. A method for performing lossy encoding comprising:
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receiving source data and quality information; and
mapping the source data into a compressed representation having a level of distortion in accordance with the quality information, wherein said compressed representation may be decoded without using said quality information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for performing lossy encoding comprising:
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receiving a set of points and a set of quality information; and
mapping said set of points to quantized points, wherein a first rule is used for mapping a first of said points to a first quantized point in accordance with a fixed codebook and a first indicator in said quality information, a second rule is used for mapping a second of said points to a second quantized point in accordance with said codebook and a second indicator in said quality information. - View Dependent Claims (17, 18, 19)
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20. A method for performing lossy encoding comprising:
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receiving a fixed codebook of quantization points and a plurality of rules, each rule defining a different partition used in mapping a source point to a quantization point;
receiving source data including a plurality of source points;
receiving quality information indicating a plurality of quality levels, each of said quality levels being associated with a different one of said rules, each of said source points being associated with one of said plurality of quality levels; and
determining a quantization point for each of said source points in accordance with a quality level and associated rule for each source point.
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21. A computer program product for performing lossy encoding comprising code for:
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receiving source data and quality information; and
mapping the source data into a compressed representation having a level of distortion in accordance with the quality information, wherein said compressed representation may be decoded without using said quality information. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A computer program product for performing lossy encoding comprising code for:
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receiving a set of points and a set of quality information; and
mapping said set of points to quantized points, wherein a first rule is used for mapping a first of said points to a first quantized point in accordance with a fixed codebook and a first indicator in said quality information, a second rule is used for mapping a second of said points to a second quantized point in accordance with said codebook and a second indicator in said quality information. - View Dependent Claims (37, 38, 39)
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40. A computer program product for performing lossy encoding comprising code for:
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receiving a fixed codebook of quantization points and a plurality of rules, each rule defining a different partition used in mapping a source point to a quantization point;
receiving source data including a plurality of source points, receiving quality information indicating a plurality of quality levels, each of said quality levels being associated with a different one of said rules, each of said source points being associated with one of said plurality of quality levels; and
determining a quantization point for each of said source points in accordance with a quality level and associated rule for each source point.
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Specification