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IEEE Transactions on Image Processing

Issue 4 • Date Apr 1997

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Displaying Results 1 - 13 of 13
  • View generation for three-dimensional scenes from video sequences

    Publication Year: 1997, Page(s):584 - 598
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1992 KB)

    This paper focuses on the representation and view generation of three-dimensional (3-D) scenes. In contrast to existing methods that construct a full 3-D model or those that exploit geometric invariants, our representation consists of dense depth maps at several preselected viewpoints from an image sequence. Furthermore, instead of using multiple calibrated stationary cameras or range scanners, we... View full abstract»

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  • Inverse halftoning via MAP estimation

    Publication Year: 1997, Page(s):574 - 583
    Cited by:  Papers (56)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB)

    There has been a tremendous amount of research in the area of image halftoning, where the goal has been to find the most visually accurate representation given a limited palette of gray levels (often just two, black and white). This paper focuses on the inverse problem, that of finding efficient techniques for reconstructing high-quality continuous-tone images from their halftoned versions. The pr... View full abstract»

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  • The effect of temporal image filters on observer-dependent contrast metrics

    Publication Year: 1997, Page(s):617 - 621
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    Interframe correlation resulting from filtering diminishes eye integration signal-to-noise ratio (SNR) improvement. This reduces the SNR improvement used to predict improved minimum resolvable contrast or temperature difference to approximately half of that achieved at the monitor. Results are included for mean and recursive filters versus filter, delay, and blurring parameters View full abstract»

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  • Hyperspectral image compression using entropy-constrained predictive trellis coded quantization

    Publication Year: 1997, Page(s):566 - 573
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    A training-sequence-based entropy-constrained predictive trellis coded quantization (ECPTCQ) scheme is presented for encoding autoregressive sources. For encoding a first-order Gauss-Markov source, the mean squared error (MSE) performance of an eight-state ECPTCQ system exceeds that of entropy-constrained differential pulse code modulation (ECDPCM) by up to 1.0 dB. In addition, a hyperspectral ima... View full abstract»

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  • On the computational complexity of the LBG and PNN algorithms

    Publication Year: 1997, Page(s):614 - 616
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    This correspondence compares the computational complexity of the pair-wise nearest neighbor (PNN) and Linde-Buzo-Gray (LBG) algorithms by deriving analytical expressions for their computational times. It is shown that for a practical codebook size and training vector sequence, the LBG algorithm is indeed more computationally efficient than the PNN algorithm View full abstract»

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  • Computationally attractive reconstruction of bandlimited images from irregular samples

    Publication Year: 1997, Page(s):540 - 548
    Cited by:  Papers (61)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (972 KB)

    An efficient method for the reconstruction of bandlimited images and the approximation of arbitrary images from nonuniform sampling values is developed. The novel method is based on the observation that the reconstruction problem can be formulated as linear system of equations using two-dimensional (2-D) trigonometric polynomials, where the matrix is of block-Toeplitz type with Toeplitz blocks. Th... View full abstract»

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  • A new interpretation of ROMKF

    Publication Year: 1997, Page(s):599 - 601
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    Both the approximate reduced updated Kalman filter (RUKF) and reduced order model Kalman filter (ROMKP) have been used in image processing for some time. This correspondence shows that the ROMKF can be interpreted as a special case of the approximate RUKF and in so doing, provides a way to estimate a needed error variance input to ROMKF View full abstract»

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  • Convex set theoretic image recovery by extrapolated iterations of parallel subgradient projections

    Publication Year: 1997, Page(s):493 - 506
    Cited by:  Papers (91)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB)

    Solving a convex set theoretic image recovery problem amounts to finding a point in the intersection of closed and convex sets in a Hilbert space. The projection onto convex sets (POCS) algorithm, in which an initial estimate is sequentially projected onto the individual sets according to a periodic schedule, has been the most prevalent tool to solve such problems. Nonetheless, POCS has several sh... View full abstract»

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  • Wavelet-based image denoising using a Markov random field a priori model

    Publication Year: 1997, Page(s):549 - 565
    Cited by:  Papers (139)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2468 KB)

    This paper describes a new method for the suppression of noise in images via the wavelet transform. The method relies on two measures. The first is a classic measure of smoothness of the image and is based on an approximation of the local Holder exponent via the wavelet coefficients. The second, novel measure takes into account geometrical constraints, which are generally valid for natural images.... View full abstract»

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  • Efficient general-purpose image compression with binary tree predictive coding

    Publication Year: 1997, Page(s):601 - 608
    Cited by:  Papers (52)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    Binary tree predictive coding uses a noncausal, shape-adaptive predictor to decompose an image into a binary tree of prediction errors and zero blocks. Fast compression performance is comparable with Joint Photographers Expert Group (JPEG) for photographs, with Graphics Interchange Format (GIF) for graphics, and superior to the state of the art for composite images View full abstract»

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  • Optimized nonorthogonal transforms for image compression

    Publication Year: 1997, Page(s):507 - 522
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    The transform coding of images is analyzed from a common standpoint in order to generate a framework for the design of optimal transforms. It is argued that all transform coders are alike in the way they manipulate the data structure formed by transform coefficients. A general energy compaction measure is proposed to generate optimized transforms with desirable characteristics particularly suited ... View full abstract»

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  • On the design of quadratic filters with application to image processing

    Publication Year: 1997, Page(s):608 - 614
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    We present a systematic design method for quadratic filters, and show an example for an edge detector. Our design maximizes the output signal-to-noise ratio (SNR) constrained to detect desired signals while ignoring specified error signals such as shot noise. This filter compares favorably with Sobel and morphological detectors of similar complexity View full abstract»

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  • Subband-coded image reconstruction for lossy packet networks

    Publication Year: 1997, Page(s):523 - 539
    Cited by:  Papers (44)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1132 KB)

    Transmission of digital subband-coded images over lossy packet networks presents a reconstruction problem at the decoder. This paper presents two techniques for reconstruction of lost subband coefficients, one for low-frequency coefficients and one for high-frequency coefficients. The low-frequency reconstruction algorithm is based on inherent properties of the hierarchical subband decomposition. ... View full abstract»

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Aims & Scope

IEEE Transactions on Image Processing focuses on signal-processing aspects of image processing, imaging systems, and image scanning, display, and printing.

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Meet Our Editors

Editor-in-Chief
Scott Acton
University of Virginia
Charlottesville, VA, USA
E-mail: acton@virginia.edu 
Phone: +1 434-982-2003