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IET Image Processing

Issue 1 • Date March 2007

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Displaying Results 1 - 10 of 10
  • Editorial

    Publication Year: 2007, Page(s): 1
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (19 KB)

    The editor introduces the first issue of the IET Image Processing, a new research journal from the Institution of Engineering and Technology. The scope of IET Image Processing aims to cover all topics related to generation, communication and processing of visual information, short of what may rightfully be considered to be the domain of computer vision, scene understanding and higher-level pattern... View full abstract»

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  • Wavelet domain-based video noise reduction using temporal discrete cosine transform and hierarchically adapted thresholding

    Publication Year: 2007, Page(s):2 - 12
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (853 KB)

    A novel spatio-temporal filter for video denoising, which operates entirely in the wavelet domain, is proposed. For effective noise reduction, the spatial and temporal redundancies that exist in the wavelet domain representation of a video signal are exploited. First, a 2D discrete wavelet transform is applied to the input noisy frames. This is followed by a discrete cosine transform (DCT), which ... View full abstract»

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  • Robust global motion estimation and novel updating strategy for sprite generation

    Publication Year: 2007, Page(s):13 - 20
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (539 KB)

    A new global motion estimation technique for sprite coding systems is presented. The proposed system can accurately register frames to a sprite without referencing to the sprite. This allows the motion estimation process to be performed in an environment independent of the quality of the sprite. The frame having the highest resolution of the scene is determined and all other frames can be projecte... View full abstract»

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  • Multiresolution video object extraction fitted to scalable wavelet-based object coding

    Publication Year: 2007, Page(s):21 - 38
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1212 KB)

    To enable content based functionalities in video processing algorithms, decomposition of scenes into semantic objects is necessary. A semi-automatic Markov random field based multiresolution algorithm is presented for video object extraction in a complex scene. In the first frame, spatial segmentation and user intervention determine objects of interest. The specified objects are subsequently track... View full abstract»

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  • Automatic segmentation of cells from microscopic imagery using ellipse detection

    Publication Year: 2007, Page(s):39 - 47
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1095 KB)

    Cell image segmentation is a necessary first step of many automated biomedical image-processing procedures. There certainly has been much research in the area. To this, a new method has been added, which automatically extracts cells from microscopic imagery, and does so in two phases. Phase 1 uses iterated thresholding to identify and mark foreground objects or `blobs' with an overall accuracy of ... View full abstract»

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  • Fast numerical scheme for gradient vector flow computation using a multigrid method

    Publication Year: 2007, Page(s):48 - 55
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (669 KB)

    The gradient vector flow (GVF) deformable model was introduced by Xu and Prince as an effective approach to overcome the limited capture range problem of classical deformable models and their inability to progress into boundary concavities. It has found many important applications in the area of medical image processing. The simple iterative method proposed in the original work on GVF, however, is... View full abstract»

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  • Block adaptive binarisation of ill-conditioned business card images acquired in a PDA using a modified quadratic filter

    Publication Year: 2007, Page(s):56 - 66
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1193 KB)

    A block adaptive binarisation method using a modified quadratic filter (MQF) to binarise business card images having ill conditions of very poor resolution, weak and irregular illumination, shadow and noise acquired in hand-held personal digital assistant cameras, is proposed. In the proposedmethod, a business card image is first partitioned into blocks of 8times8, among which character blocks (CB... View full abstract»

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  • Document binarisation using Kohonen SOM

    Publication Year: 2007, Page(s):67 - 84
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2958 KB)

    An integrated system for the binarisation of normal and degraded printed documents for the purpose of visualisation and recognition of text characters is proposed. In degraded documents, where considerable background noise or variation in contrast and illumination exists, there are many pixels that cannot be easily classified as foreground or background pixels. For this reason, it is necessary to ... View full abstract»

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  • Variational PDE based image restoration using neural network

    Publication Year: 2007, Page(s):85 - 93
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (515 KB)

    Two variational partial differential equations as regularisation terms are proposed for the image restoration model based on the modified Hopfield neural network. One is based on a harmonic model and the other is based on a total variation model. The performance of these regularisation terms is analysed from the viewpoint of nonlinear diffusion. It can be shown that the two proposed restoration mo... View full abstract»

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  • Wavelet-based video coding with early-predicted zerotrees

    Publication Year: 2007, Page(s):95 - 102
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (298 KB)

    The coding efficiency of DCT-based standard video codecs is significantly improved by the use of skipped macroblocks. A similar concept is proposed for zerotree-based wavelet video coders. In a pyramidal wavelet transform, the wavelet coefficients are linked through spatial orientation trees. For each transformed frame, a method is proposed to identify those trees that are likely to be zerotrees t... 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
iet_ipr@theiet.org