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Joshi et al., 2002 - Google Patents

Subband Coding of Images Using Classification and Trellis Coded Quantization

Joshi et al., 2002

Document ID
586282478775767421
Author
Joshi R
Fischer T
Publication year
Publication venue
Wavelet Image and Video Compression

External Links

Snippet

Effective quantizers and source codes are based on effective source models. In statistically- based image coding, classification is a method for identifying portions of the image data that have similar statistical properties so that the data can be encoded using quantizers and …
Continue reading at link.springer.com (other versions)

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    • H04N19/102Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124Quantisation
    • H04N19/126Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
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    • H04N19/146Data rate or code amount at the encoder output
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    • H04N19/149Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
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    • H04N19/169Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
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    • H04N19/18Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
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    • H03M7/30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

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