On The Problem of Simultaneous Encoding of Magnitude and Location Information

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dc.citation.bibtexNameinproceedingsen_US
dc.citation.conferenceNameAsilomar Conference on Signals, Systems, and Computersen_US
dc.citation.locationPacific Grove, CAen_US
dc.contributor.authorCastro, Ruien_US
dc.contributor.authorWakin, Michaelen_US
dc.contributor.authorOrchard, Michaelen_US
dc.contributor.orgDigital Signal Processing (http://dsp.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:38:13Zen_US
dc.date.available2007-10-31T00:38:13Zen_US
dc.date.issued2002-11-20en_US
dc.date.modified2003-07-13en_US
dc.date.note2002-12-12en_US
dc.date.submitted2002-11-20en_US
dc.descriptionConference Paperen_US
dc.description.abstractModern image coders balance bitrate used for encoding the location of signicant transform coefficients, and bitrate used for coding their values. The importance of balancing location and value information in practical coders raises fundamental open questions about how to code even simple processes with joint uncertainty in coefficient location and magnitude. This paper studies the most basic example of such a process: a 2-D process studied earlier by Weidmann and Vetterli that combines Gaussian magnitude information with Bernoulli location uncertainty. The paper offers insight into the coding of this process by investigating several new coding strategies based on more general approaches to lossy compression of location. Extending these ideas to practical coding, we develop a trellis-coded quantization algorithm with performance matching the published theoretical bounds. Finally, we evaluate the quality of our strategies by deriving a rate-distortion bound using Blahut's algorithm for discrete sources.en_US
dc.identifier.citationR. Castro, M. Wakin and M. Orchard, "On The Problem of Simultaneous Encoding of Magnitude and Location Information," 2002.en_US
dc.identifier.urihttps://hdl.handle.net/1911/19756en_US
dc.language.isoengen_US
dc.subjectrate-distortionen_US
dc.subjectimage compressionen_US
dc.subjectlocation uncertaintyen_US
dc.subjecttrellis-coded quantizationen_US
dc.subjectlocation and magnitudeen_US
dc.subject.keywordrate-distortionen_US
dc.subject.keywordimage compressionen_US
dc.subject.keywordlocation uncertaintyen_US
dc.subject.keywordtrellis-coded quantizationen_US
dc.subject.keywordlocation and magnitudeen_US
dc.subject.otherImage Processing and Pattern analysisen_US
dc.titleOn The Problem of Simultaneous Encoding of Magnitude and Location Informationen_US
dc.typeConference paperen_US
dc.type.dcmiTexten_US
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