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IET Image Processing

Issue 4 • Date June 2011

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Displaying Results 1 - 8 of 8
  • Editorial: Research advances in computer graphics and multimedia security

    Publication Year: 2011, Page(s):297 - 298
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (66 KB)

    The rapid advances in computer graphics and multimedia security technologies have heralded a new age of explosive growth in multimedia applications such as real-time 3D game and secure multimedia content. The past decade has witnessed a proliferation of powerful multimedia systems and an increasing demand for practice of computer graphics and multimedia security (CGMS). CGMS has moved into the mai... View full abstract»

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  • Simplification of point-sampled geometry with feature preservation

    Publication Year: 2011, Page(s):299 - 305
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (514 KB)

    A curvature-adaptive simplification method for point-sampled geometry (PSG) that efficiently preserves the surface features is presented. The main idea of the method consists of focusing on the edge intensities of sample points and the similarity of geometry features of sample points. Using the eigen analysis of normal voting tensor, with every point of PSG, an edge intensity is associated by whic... View full abstract»

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  • Efficient block prediction-based coding of computer screen images with precise block classification

    Publication Year: 2011, Page(s):306 - 314
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (730 KB)

    This study presents a precise, one-pass block classification algorithm for efficient coding of computer screen images like power-point presentations, webpages and wall papers. The objective is to minimise the loss of visual quality of text during compression by separating text information which needs high spatial resolution than the pictures and background. It segments computer screen images into ... View full abstract»

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  • Robust discrete wavelet-fan beam transforms-based colour image watermarking

    Publication Year: 2011, Page(s):315 - 322
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (505 KB)

    Combined discrete wavelet transform-fan beam transform (DWT-FBT) has been explored as a new possible domain for colour image watermarking. The two schemes proposed in the combined domain are (i) wavelet fan beam watermarking on luminance and chrominance and (ii) wavelet fan beam watermarking on chrominance alone. After the application of DWT on the host image and after careful selection of the sui... View full abstract»

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  • Gradient-based edge detection for motion estimation in H.264/AVC

    Publication Year: 2011, Page(s):323 - 327
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    This study introduces a block-based motion estimation algorithm based on projection with adaptive window-size selection. Using one-dimensional (1D) projection, the original 2D block-matching problem is translated to a simpler 1D matching problem which eliminates the majority of potential pixel participation. The authors propose an efficient fast-motion estimation method using an intensity gradient... View full abstract»

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  • Rotation, scaling, and translation resilient watermarking for images

    Publication Year: 2011, Page(s):328 - 340
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1234 KB)

    Traditional watermarking schemes are sensitive to geometric distortions, in which synchronisation for recovering embedded information is a challenging task because of the disorder caused by rotation, scaling or translation (RST). The existing RST-resistant watermarking methods still have limitations with respect to robustness, capacity or fidelity. In this study, the authors address several major ... View full abstract»

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  • Collision handling for free-form deformation embedded surface

    Publication Year: 2011, Page(s):341 - 348
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (659 KB)

    Recently, free-form deformation (FFD)-based simulation has received a lot of attention to achieve real-time animation of complex objects, and many researches have improved the accuracy of modelling complex material property. Previously, a free-form deformation axis aligned bounding box (FFD AABB) was proposed to approximate the FFD-embedded surfaces. Using FFD AABB, an efficient update of bounding... View full abstract»

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  • H.264 video watermarking with secret image sharing

    Publication Year: 2011, Page(s):349 - 354
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (537 KB)

    More people are studying digital video stream transference via networks. However, frequent Internet use increases the requirement for copyright protection and security. As a consequence, to prevent video streams that belong to rightful owners from being intentionally or unknowingly used by others, information protection is indispensable. The authors propose a novel method for video watermarking th... 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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IET Research Journals
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