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Image De-Quantization Using Plate Bending Model

David Völgyes ; Anne Catrine Trægde Martinsen ; Arne Stray-Pedersen ; Dag Waaler ; Marius Pedersen

Algorithms, 01 July 2018, Vol.11(8), p.110 [Tạp chí có phản biện]

E-ISSN: 1999-4893 ; DOI: 10.3390/a11080110

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  • Nhan đề:
    Image De-Quantization Using Plate Bending Model
  • Tác giả: David Völgyes ; Anne Catrine Trægde Martinsen ; Arne Stray-Pedersen ; Dag Waaler ; Marius Pedersen
  • Chủ đề: de-Quantization ; False Contour Removal ; Bit Depth Enhancement ; Biharmonic Equation ; Partial Differential Equations ; Computer Science
  • Là 1 phần của: Algorithms, 01 July 2018, Vol.11(8), p.110
  • Mô tả: Discretized image signals might have a lower dynamic range than the display. Because of this, false contours might appear when the image has the same pixel value for a larger region and the distance between pixel levels reaches the noticeable difference threshold. There have been several methods aimed at approximating the high bit depth of the original signal. Our method models a region with a bended plate model, which leads to the biharmonic equation. This method addresses several new aspects: the reconstruction of non-continuous regions when foreground objects split the area into separate regions; the incorporation of confidence about pixel levels, making the model tunable; and the method gives a physics-inspired way to handle local maximal/minimal regions. The solution of the biharmonic equation yields a smooth high-order signal approximation and handles the local maxima/minima problems.
  • Ngôn ngữ: English
  • Số nhận dạng: E-ISSN: 1999-4893 ; DOI: 10.3390/a11080110

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