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2009 13th International Machine Vision and Image Processing Conference

2-4 Sept. 2009

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Displaying Results 1 - 25 of 39
  • [Front cover]

    Publication Year: 2009, Page(s): C1
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  • [Title page i]

    Publication Year: 2009, Page(s): i
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  • [Title page iii]

    Publication Year: 2009, Page(s): iii
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  • [Copyright notice]

    Publication Year: 2009, Page(s): iv
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  • Table of contents

    Publication Year: 2009, Page(s):v - vii
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  • Foreword

    Publication Year: 2009, Page(s): viii
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  • Chairs and Organizing Committee

    Publication Year: 2009, Page(s): ix
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  • Programme Committee and Reviewers

    Publication Year: 2009, Page(s): x
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  • Estimating 3D Scene Flow from Multiple 2D Optical Flows

    Publication Year: 2009, Page(s):1 - 6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1603 KB) | HTML iconHTML

    Scene flow is the motion of the surface points in the 3D world. For a camera, it is seen as a 2D optical flow in the image plane. Knowing the scene flow can be very useful as it gives an idea of the surface geometry of the objects in the scene and how those objects are moving. Four methods for calculating the scene flow given multiple optical flows have been explored and detailed in this paper alo... View full abstract»

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  • Feature-Assisted Sparse to Dense Motion Estimation Using Geodesic Distances

    Publication Year: 2009, Page(s):7 - 12
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1730 KB) | HTML iconHTML

    Large motion displacements in image sequences are still a problem for most motion estimation techniques. Progress in feature matching allows to establish robust correspondences between images for a sparse set of points. Recent works have attempted to use this sparse information to guide the dense motion field estimation. We propose to achieve this in an extended motion estimation framework, which ... View full abstract»

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  • Constant Time Stereo Matching

    Publication Year: 2009, Page(s):13 - 17
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2371 KB) | HTML iconHTML

    Typically, local methods for stereo matching are fast but have relatively low degree of accuracy while global ones, though costly, achieve a higher degree of accuracy in retrieving disparity information. Recently, however, some local methods such as those based on segmentation or adaptive weights are suggested to possibly achieve more accuracy than global ones in retrieving disparity information. ... View full abstract»

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  • Analysis of Pigmented Skin Lesion Border Irregularity Using the Harmonic Wavelet Transform

    Publication Year: 2009, Page(s):18 - 23
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (371 KB) | HTML iconHTML

    The development of computerised systems which differentiate between suspicious tumours and clinically benign pigmented skin lesions can assist in improved early diagnosis of malignant melanoma, subsequently reducing mortality rates associated with this disease. One lesion feature indicative of malignancy is border irregularity. In this paper the theoretical fundamentals of a harmonic-wavelet based... View full abstract»

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  • Constrained Region-Based Segmentation of Pleural Effusion in Thin-Slice CT

    Publication Year: 2009, Page(s):24 - 29
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1218 KB) | HTML iconHTML

    A pleural effusion is excess fluid that collects in the pleural cavity, the fluid-filled space that surrounds the lungs. Surplus amounts of such fluid can impair breathing by limiting the expansion of the lungs during inhalation. Measuring the fluid volume is indicative of the effectiveness of any treatment but, due to the similarity to surround regions, fragments of collapsed lung present and top... View full abstract»

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  • Segmentation of Intertwining Stringlike Objects in Three Dimensional CT Image Based on Positional Information

    Publication Year: 2009, Page(s):30 - 35
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (599 KB) | HTML iconHTML

    In this paper, a method for segmenting intertwining stringlike objects (strings) in a three-dimensional (3D) X-ray computed tomography (CT) image is proposed. In the proposed method, the positional information, which is a sequence of the center points of the string, is used. The positional information is obtained by tracing the string. The string is traced by sequentially estimating the center and... View full abstract»

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  • Diffusion Tensor Images Upsampling: A Registration-Based Approach

    Publication Year: 2009, Page(s):36 - 40
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (469 KB) | HTML iconHTML

    Diffusion weighted images (DWI), from which the corresponding diffusion tensor images (DTI) are estimated, are commonly acquired with anisotropic discretizations. Traditional scene-based interpolation methods to upsample diffusion weighted images do not lead to satisfactory results since they do not exploit structural information from the images. In this paper, we present a DTI upsampling framewor... View full abstract»

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  • Fast Edge Map Pyramids for Hexagonal Image Structures

    Publication Year: 2009, Page(s):41 - 46
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (297 KB) | HTML iconHTML

    Improving the computational efficiency of image processing tasks has become a dominant issue with the ultimate goal of real-time processing. One solution to improve efficiency is the use of a hexagonal image representation and we present an approach to feature extraction on hexagonal images using an edge map pyramid approach that further reduces the computational cost. The efficient performance of... View full abstract»

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  • Indistinct Frame Detection in Colonoscopy Videos

    Publication Year: 2009, Page(s):47 - 52
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1708 KB) | HTML iconHTML

    An automated system for analysis of colonoscopy videos is expected to complement the expertise and the experience of a medical professional in: (a) detecting lesions and (b) assessing the quality of a given procedure. Colonoscopy videos contain a significant number of frames which do not carry any clinical information. The presence of such frames would slow down or cause the failure of the process... View full abstract»

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  • Estimation of Errors in Gene Expression Data Introduced by Diffractive Blurring of Confocal Images

    Publication Year: 2009, Page(s):53 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    The confocal scanning microscopy is the most common method for acquisition of gene expression data at a resolution of a single cell. Confocal images are of very high quality that makes it possible to extract high-precision quantitative information from them. However the accuracy of the data is limited due to possible experimental errors. In this study we propose an algorithm for estimation and cor... View full abstract»

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  • Image Hatching for Visual Cryptography

    Publication Year: 2009, Page(s):59 - 64
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1872 KB) | HTML iconHTML

    Image hatching (or non-photorealistic line-art) is a technique widely applied in the printing or engraving of currency. Diverse styles of brush strokes have previously been adopted for different areas of an image to create textures and shading. Because there is no continuous tone within these types of images, we propose a multi-level scheme, which uses different textures based on a threshold level... View full abstract»

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  • Multichannel Watermarking for Color Images by Using Quantization Visibility Thresholds

    Publication Year: 2009, Page(s):65 - 70
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB) | HTML iconHTML

    In this paper, a wavelet-based watermarking scheme for color images is proposed. The watermarking scheme is based on the design of a color visual model that is the modification of a perceptual model used in the image coding of gray scale images. The model is designed to estimate and utilize the noise detection threshold of each wavelet coefficient in luminance and chrominance components in order t... View full abstract»

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  • Watermarking for Palmprint Image Protection

    Publication Year: 2009, Page(s):71 - 76
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    Intense work has been reported in the last decade for person's recognition using palmprint biometric patterns. However, there has been a little interest in the security of palmprint recognition systems. This paper introduces a new blind watermarking technique to address the vulnerabilities of a palmprint recognition system against replay attacks. In particular, we focus on protecting the system ag... View full abstract»

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  • Cellular Tracking in Time-Lapse Phase Contrast Images

    Publication Year: 2009, Page(s):77 - 82
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1013 KB) | HTML iconHTML

    The quantitative analysis of live cells is a key issue in evaluating biological processes. The current clinical practice involves the application of a tedious and time consuming manual tracking procedure on large amount of data. As a result, automatic tracking systems are currently developed and evaluated. However, problems caused by cellular division, agglomeration, Brownian motion and topology c... View full abstract»

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  • Poisson Kalman Particle Filtering for Tracking Centrosomes in Low-Light 3-D Confocal Image Sequences

    Publication Year: 2009, Page(s):83 - 88
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (811 KB) | HTML iconHTML

    An automatic tracker is developed, which is capable of tracking intra-cellular features in living cells from 3-D confocal image sequences corrupted by noise. The proposed approach takes a Poisson MAP-MRF classification as an initial stage to detect objects. These are then used to update the multiple target locations generated by 3D Poisson Kalman Particle filters (PKPF). A probabilistic nearest ne... View full abstract»

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  • Robust Panning Analysis for Slideshow Detection in Video Databases

    Publication Year: 2009, Page(s):89 - 93
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (322 KB) | HTML iconHTML

    We present an algorithm for slideshow detection in video databases such as YouTube or Blip.TV. Our solution is based around feature tracking to extract movement between sequentially captured frames. This movement is then analysed through the use of the Hough transform and compared against behaviour commonly exhibited by slideshows: still and panning static images. We show experimentally the effect... View full abstract»

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  • Rotation Invariant Matching of Partial Shoeprints

    Publication Year: 2009, Page(s):94 - 98
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (506 KB) | HTML iconHTML

    In this paper, we propose a solution for the problem of rotated partial shoeprint retrieval, based on the combined use of local points of interest and SIFT descriptor. Once the generated features are encoded using SIFT descriptor, matching is carried out using RANSAC to estimate a transformation model and establish the number of its inliers which is then multiplied by the sum of point-to-point Euc... View full abstract»

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