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dc.contributor.authorGopinath, Ramesh A.
Lang, Markus
Guo, Haitao
Odegard, Jan E.
dc.creatorGopinath, Ramesh A.
Lang, Markus
Guo, Haitao
Odegard, Jan E.
dc.date.accessioned 2007-10-31T00:45:07Z
dc.date.available 2007-10-31T00:45:07Z
dc.date.issued 1994-07-20
dc.date.submitted 1994-07-20
dc.identifier.citation R. A. Gopinath, M. Lang, H. Guo and J. E. Odegard, "Enhancement of Decompressed Images at Low Bit Rates," 1994.
dc.identifier.urihttps://hdl.handle.net/1911/19909
dc.description Conference Paper
dc.description.abstract Transform coding at low bit rates introduces artifacts associated with the basis functions of the transform. For example, decompressed images based on the DCT (discrete cosine transform)- like JPEG<sup>16</sup> - exhibit blocking artifacts at low bit rates. This paper proposes a post-processing scheme to enhance decompressed images that is potentially applicable in several situations. In particular, the method works remarkable well in "deblocking" of DCT compressed images. The method is non-linear, computationally efficient, and spatially adaptive - and has the distint feature that it removes artifacts while yet retaining sharp features in the images. An important implication of this result is that images coded using the JPEG standard can be efficiently post-processed to give significantly improved visual quality in the images.
dc.language.iso eng
dc.subjectimage enhancement
wavelet shrinkage
jpeg
image restoration
image compression
dc.subject.otherWavelet based Signal/Image Processing
dc.title Enhancement of Decompressed Images at Low Bit Rates
dc.type Conference paper
dc.date.note 2004-01-09
dc.citation.bibtexName inproceedings
dc.date.modified 2004-01-22
dc.contributor.orgDigital Signal Processing (http://dsp.rice.edu/)
dc.subject.keywordimage enhancement
wavelet shrinkage
jpeg
image restoration
image compression
dc.citation.conferenceName SPIE, Mathematical Imaging: Wavelet Applications in Signal Processing and Image Processing II
dc.type.dcmi Text
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1117/12.188786


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    Publications by Rice Faculty and graduate students in digital signal processing.
  • ECE Publications [1278]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students

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