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IET Image Processing

Issue 5 • October 2008

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  • Smoothing transforms for wavelet approximation of piecewise smooth functions

    Publication Year: 2008, Page(s):239 - 248
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (578 KB)

    Multi-resolution analysis with high vanishing moment wavelets provides a framework to efficiently approximate smooth functions. However, it is a well-known fact that wavelet approximation usually cannot achieve the same order of approximation in the vicinity of discontinuous points of functions as that in the smooth regions. Ringing artefacts in the reconstructed functions inevitably appear around... View full abstract»

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  • Flattest histogram specification with accurate brightness preservation

    Publication Year: 2008, Page(s):249 - 262
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1140 KB)

    Brightness preservation is in great demand in the consumer electronics field, when the image is effectively enhanced. Finding the flattest target histogram for contrast enhancement subject to a constrained mean brightness is proposed. After that an exact histogram specification method is employed to help meet perfect brightness preservation. The authors name such a method as flattest histogram spe... View full abstract»

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  • Flexible prediction block decomposition with multi-channel filter banks for video coding

    Publication Year: 2008, Page(s):236 - 274
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (642 KB)

    A flexible prediction block decompostion method is presented with three transform tools in terms of a multi-channel filter bank system for the latest video coding standard H.264/AVC. The 4times4 and 8times8 integer discrete cosine transforms of H.264/AVC are subsituted by these new tools such that the transform is quite well adapted to variable prediction blocks. As a result, block artefacts are r... View full abstract»

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Aims & Scope

The range of topics covered by IET Image Processing includes areas related to the generation, processing and communication of visual information.

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