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Machine Vision, 2007. ICMV 2007. International Conference on

Date 28-29 Dec. 2007

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Displaying Results 1 - 25 of 38
  • International conference on machine vision

    Publication Year: 2007, Page(s): c1
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  • Proceedings international conference on machine vision 2007 (ICMV 2007)

    Publication Year: 2007, Page(s): i
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  • [Copyright notice]

    Publication Year: 2007, Page(s): ii
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  • Organizing Committee (ICMV 2007)

    Publication Year: 2007, Page(s): iii
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  • list-reviewer

    Publication Year: 2007, Page(s): iv
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  • Preface

    Publication Year: 2007, Page(s): v
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  • [Blank page]

    Publication Year: 2007, Page(s): vi
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  • Table of contents

    Publication Year: 2007, Page(s):vii - viii
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  • A hybrid approach towards vision based self-localization of autonomous mobile robots

    Publication Year: 2007, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB) | HTML iconHTML

    This paper presents a hybrid approach towards self- localization of tiny autonomous mobile robots in a known but highly dynamic environment. The proposed algorithm is intended for two-wheeled differential drive robots which are equipped with a pivoted stereo vision system, two digital encoders, a gyro sensor, two 10g accelerometers and a magnetic compass. The global position of the robot can be es... View full abstract»

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  • Equivalence of oblique and frontal illumination in perspective shape from shading

    Publication Year: 2007, Page(s):7 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB) | HTML iconHTML

    In this paper, it is shown that any oblique illumination shape-from-shading problem under perspective projection for Lambertian reflection and a single distant light source can be converted to an equivalent frontal illumination problem by a simple nonlinear intensity transformation which is equivalent to a rectification in stereo vision. Remarkably, it involves no approximation of depth. The metho... View full abstract»

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  • Wide baseline stereo based on background modeling

    Publication Year: 2007, Page(s):12 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1249 KB) | HTML iconHTML

    Correspondence is one of the basic and most important problems in computer vision. Correct correspondence can be achieved through stereopsis and state of art algorithms have emerged for computation of dense correspondence incase of short baseline. Incase of wide baseline, maintaining correspondence in outdoor environment is a challenging task. First, A new concept of "motion from stereo" is presen... View full abstract»

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  • Focus measure operator using 3D gradient

    Publication Year: 2007, Page(s):18 - 22
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1011 KB) | HTML iconHTML

    The shape from focus (SFF) is used to reconstruct a three-dimensional (3D) structure of objects from a sequence of two-dimensional (2D) images. The basic idea of image focus is that objects at different distances from a lens are focused at different distances. In SFF, focus measure operator is applied on the sequence of images. From the analysis of defocused image, it is observed that the focus me... View full abstract»

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  • Iris localization via intensity gradient and recognition through bit planes

    Publication Year: 2007, Page(s):23 - 28
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1417 KB) | HTML iconHTML

    Iris recognition is very hot topic in both research and practical applications. In this paper, a robust algorithm is proposed for iris localization and a very simple method is employed for feature extraction. Iris localization is the key step in iris recognition systems because all subsequent steps depend highly on its accuracy. The proposed algorithm utilizes important property of gradient of int... View full abstract»

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  • Lip localization and performance evaluation

    Publication Year: 2007, Page(s):29 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (170 KB) | HTML iconHTML

    Although impressive achievement has been made in the field of lip localization, there is no clear picture showing that which algorithms or methods have technical advantages over others. It is partly due to the fact that the commonly agreed evaluation methodology has not been established yet in the field. The common practice is using manual lip labelling as the ground truth for evaluation marked by... View full abstract»

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  • Best wavelength selection for Gabor wavelet using GA for EBGM algorithm

    Publication Year: 2007, Page(s):35 - 39
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB) | HTML iconHTML

    In this paper a new method for optimization of elastic bunch graph matching (EBGM) algorithm in frontal face recognition is presented. In EBGM algorithm, some pre-determined wavelength of Gabor wavelet is used to extract features from face image. For optimization of EBGM algorithm, genetic algorithm (GA) is used to select the best wavelengths of Gabor wavelet. For evaluation, algorithm has been te... View full abstract»

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  • Color Model based real-time Face Detection with AdaBoost in color image

    Publication Year: 2007, Page(s):40 - 45
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1672 KB) | HTML iconHTML

    Face detection plays an important role in Computer Vision. In the past few years, much effort has been put into this field. Some approaches are based on Color Model which is highly expensive. Viola and Jones proposed a real-time approach based on AdaBoost, but it suffered from the risk of overfitting. In this paper, we propose a method to take advantage of Color Model and AdaBoost. A novel Face Re... View full abstract»

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  • A study on partial face recognition of eye region

    Publication Year: 2007, Page(s):46 - 49
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB) | HTML iconHTML

    In this preliminary study, we have investigated the human eye as an important part of face for personal authentication under certain restricted circumstances related to face occlusion, individual privacy concerns and religious practices. Although this part of face is not as unique as full-face, but it offers much higher computational efficiency with minimum processing steps, and minimum storage ca... View full abstract»

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  • Iranian Face Database with age, pose and expression

    Publication Year: 2007, Page(s):50 - 55
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (427 KB) | HTML iconHTML

    This paper introduces a database of over 3,600 color images which we collected from 616 different human faces. It includes facial images of people between ages 2-85. Face images of persons with different ages is needed to generate a reliable age classification algorithm. Four different poses, two different expressions, and one image with glasses were taken if the subjects were interested. Informat... View full abstract»

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  • Improving quality of fractal compressed images

    Publication Year: 2007, Page(s):56 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (518 KB) | HTML iconHTML

    This paper proposes a new quality improvement technique for fractal-based image compression techniques using diffusion equations. Fractal coding uses a contractive mapping scheme to represent an image. This process of contractive mapping causes artifacts and blocking effects in encoded images. This problem is severed when compression ratio is increased or there are high frequency regions in the im... View full abstract»

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  • A new fast no search fractal image compression in DCT domain

    Publication Year: 2007, Page(s):62 - 66
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (594 KB) | HTML iconHTML

    In this paper a new no search fractal image compression in DCT domain is proposed. Here for each range block we have considered one domain block and searched only for contrast scaling. Therefore the fractal code doesn't contain coordinates of matched domain block. The advantage of this method is that the quadtree algorithm can be applied and the size of the range block can be as small as 2times2 p... View full abstract»

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  • Texture features based on Fourier transform and Gabor filters: an empirical comparison

    Publication Year: 2007, Page(s):67 - 72
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB) | HTML iconHTML

    This paper presents an empirical comparison of two texture descriptors reported in recent publications. The first one is based on discrete Fourier transform (DFT) and the other is based on the Gabor filters. The two are compared for texture recognition and retrieval. To have deeper insight in to the role of neighbourhood properties and the filter banks in the texture description, extensive experim... View full abstract»

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  • Automatic landmark detection in cephalometry using a modified Active Shape Model with sub image matching

    Publication Year: 2007, Page(s):73 - 78
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (533 KB) | HTML iconHTML

    This paper introduces a modification on using active shape models (ASM) for automatic landmark detection in cephalometry and combines many new ideas to improve its performance. In first step, some feature points are extracted to model the size, rotation, and translation of skull. A learning vector quantization (LVQ) neural network is used to classify images according to their geometrical specifica... View full abstract»

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  • Shape and structure for image matching and retrieval

    Publication Year: 2007, Page(s):79 - 84
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    We report on methods for using object shape and structure for matching a pair of images or an image and a drawing. These methods can be used in combination with the several methods using color and texture already in use in content based image retrieval (CBIR). Matching methods are based on edges, corners, and ribbons and the relations among them and can be controlled for rotation, translation, and... View full abstract»

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  • Structure-less object detection using AdaBoost algorithm

    Publication Year: 2007, Page(s):85 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB) | HTML iconHTML

    AdaBoost based learning algorithms have been traditionally used for the detection of objects with a fixed geometric structure, for example human faces. The learning algorithms can learn the geometric structure common to all instances of the face, and latter use the learned geometric structure for face detection. In contrast to the existing approaches, we use AdaBoost based learning algorithm for t... View full abstract»

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  • Best-match rectangle adjustment algorithm for persistent and precise correlation tracking

    Publication Year: 2007, Page(s):91 - 96
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (659 KB) | HTML iconHTML

    Correlation tracking is performed by matching a template of the object with every candidate region in a search window and locating the best-match region. The template is initialized with the target manually, when it appears in the video. The human operator is usually unable to extract a good template of the target within a limited time period, while the target is moving and manoeuvring in the stre... View full abstract»

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