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Sixth IEEE Workshop on Applications of Computer Vision, 2002. (WACV 2002). Proceedings.

4-4 Dec. 2002

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  • Proceedings Sixth IEEE Workshop on Applications of Computer Vision (WACV 2002)

    Publication Year: 2002
    Request permission for commercial reuse | PDF file iconPDF (259 KB)
    Freely Available from IEEE
  • Multi-view face detection with FloatBoost

    Publication Year: 2002, Page(s):184 - 188
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB) | HTML iconHTML

    In this paper, a new boosting algorithm, called FloatBoost, is proposed to construct a strong face-nonface classifier. FloatBoost incorporates the idea of Floating Search into AdaBoost, and yields similar or higher classification accuracy than AdaBoost with a smaller number of weak classifiers. We also present a novel framework for fast multi-view face detection. A detector-pyramid architecture is... View full abstract»

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  • Author index

    Publication Year: 2002, Page(s):335 - 336
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    Freely Available from IEEE
  • A model-driven method of estimating the state of clothes for manipulating it

    Publication Year: 2002, Page(s):63 - 69
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB) | HTML iconHTML

    Aiming at manipulating clothes, a model-driven method of estimating the state of hanging clothes is proposed. We suppose a system consisting of two manipulators and a camera. The task considered in this paper is to hold a pullover at its two shoulders by two manipulators respectively, as a first step for folding it. The proposed method estimates the state of the clothes held by one manipulator in ... View full abstract»

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  • Towards automatic analysis of DNA microarrays

    Publication Year: 2002, Page(s):57 - 62
    Cited by:  Papers (4)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB) | HTML iconHTML

    In this paper we present a computational framework that provides the automatic analysis of spotted DNA microarray image data. The challenges are in providing an accurate representation of microarray hybridization observations while minimizing user interaction. To obtain this, we need to segment the observation data and subsequent correction for true hybridization level measurements must be accompl... View full abstract»

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  • Does colorspace transformation make any difference on skin detection?

    Publication Year: 2002, Page(s):275 - 279
    Cited by:  Papers (50)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (277 KB) | HTML iconHTML

    Skin detection is an important process in many of computer vision algorithms. It usually is a process that starts at a pixel-level, and that involves a pre-process of colorspace transformation followed by a classification process. A colorspace transformation is assumed to increase separability between skin and non-skin classes, to increase similarity among different skin tones, and to bring a robu... View full abstract»

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  • Robust and efficient detection of non-lint material in cotton fiber samples

    Publication Year: 2002, Page(s):51 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    This paper describes the design of an automated image segmentation system that provides high-resolution measurements of non-lint material, or trash, in cotton samples. Unlike previous trash analysis systems, this platform is able to accurately and precisely quantify the amount of foreign matter present in a sample in the presence of both illuminant degradation and fiber color variations by employi... View full abstract»

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  • Monocular, vision based, autonomous refueling system

    Publication Year: 2002, Page(s):309 - 313
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (319 KB) | HTML iconHTML

    This paper describes design and implementation of a vision based platform for automated refueling tasks. The platform is an autonomous docking system in principle, with the specific application - refueling of vehicles. The system is. based on monochromatic, monocular vision, and it utilizes very specialized image processing schemes. Image processing consists of very fast filtering and segmenting a... View full abstract»

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  • Foreground object detection in changing background based on color co-occurrence statistics

    Publication Year: 2002, Page(s):269 - 274
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (382 KB) | HTML iconHTML

    This paper proposes a novel method for detecting foreground objects in nonstationary complex environments containing moving background objects. We derive a Bayes decision rule for classification of background and foreground changes based on inter-frame color co-occurrence statistics. An approach to store and fast retrieve color co-occurrence statistics is also established In the proposed method, f... View full abstract»

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  • Mean-shift segmentation with wavelet-based bandwidth selection

    Publication Year: 2002, Page(s):43 - 47
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB) | HTML iconHTML

    Recently, various non-linear techniques for segmentation have been proposed based on non-parametric density estimation. These approaches model image data as clusters of pixels in the combined range-domain space, using kernel based techniques to represent the underlying, multi-modal Probability Density Function (PDF). In Mean-shift based segmentation, pixel clusters or image segments are identified... View full abstract»

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  • Range synthesis for 3D environment modeling

    Publication Year: 2002, Page(s):231 - 236
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB) | HTML iconHTML

    In this paper a range synthesis algorithm is proposed as an initial solution to the problem of 3D environment modeling from sparse data. We develop a statistical learning method for inferring and extrapolating range data from as little as one intensity image and from those (sparse) regions where both range and intensity information is available. Our work is related to methods for texture synthesis... View full abstract»

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  • Viewing enhancement in video-endoscopy

    Publication Year: 2002, Page(s):304 - 308
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB) | HTML iconHTML

    Video-endoscopy, a mode of minimally invasive surgery, has proven to be significantly less invasive to the patient. However, it creates a much more complex operation environment that requires the surgeon to operate through a video interface. Visual feedback control and image interpretation can be difficult. Poor visual feedback in video-endoscopy prolongs the operation time, increases the risk to ... View full abstract»

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  • The droplet virtual brush for Chinese calligraphic character modeling

    Publication Year: 2002, Page(s):330 - 334
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (771 KB) | HTML iconHTML

    This paper proposes a virtual brush model based on droplet operation and its application on retrieving character outlines and character modeling in Chinese calligraphy style. In the proposed approach, a virtual brush model based on droplet operation is applied to produce vivid character outlines. The droplet model helps to compute stroke area with well-defined geometry information and leads to the... View full abstract»

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  • Multi-sensor super-resolution

    Publication Year: 2002, Page(s):27 - 31
    Cited by:  Papers (26)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB) | HTML iconHTML

    Image sensing is usually done with multiple sensors, like the RGB sensors in color imaging, the IR and EO sensors in surveillance and satellite imaging, etc. The resolution of each sensor can be increased by considering the images of the other sensors, and using the statistical redundancy among the sensors. Particularly, we use the fact that most discontinuities in the image of one sensor correspo... View full abstract»

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  • Video de-abstraction or how to save money on your wedding video

    Publication Year: 2002, Page(s):264 - 268
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB) | HTML iconHTML

    There exist an increasing body of work dealing with video still abstraction, the extraction of representative still images from a video sequence. This work focuses in the other direction: given a video abstract and raw unedited video data, we produce an edited video. We focus on the application of generating wedding videos. We use the existing wedding photo album as an abstract, and produce an edi... View full abstract»

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  • Evaluation of tracking methods for human-computer interaction

    Publication Year: 2002, Page(s):121 - 126
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1065 KB) | HTML iconHTML

    Tracking methods are evaluated in a real-time feature tracking system used for human-computer interaction (HCI). The Camera Mouse, a HCI system for people with severe disabilities that interprets video input to manipulate the mouse pointer, was improved and used as the test platform for this study. Tracking methods tested are the Lucas-Kanade tracker and a tracker based on normalized correlation. ... View full abstract»

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  • Fingerprint verification using genetic algorithms

    Publication Year: 2002, Page(s):79 - 83
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (663 KB) | HTML iconHTML

    Fingerprint matching is still a challenging problem for reliable person authentication because of the complex distortions involved in two impressions of the same finger. In this paper, we propose a fingerprint matching approach based on Genetic Algorithms (GA), which finds the optimal global transformation between two different fingerprints. In order to deal with low quality fingerprint images, wh... View full abstract»

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  • Knowledge-based registration & segmentation of the left ventricle: a level set approach

    Publication Year: 2002, Page(s):37 - 42
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (531 KB) | HTML iconHTML

    In this paper, we propose a level set formulation to deal with the segmentation and registration of the left ventricle in Magnetic Resonance (MR) images. Our approach is based on the integration of visual information, anatomical constraints and a flexible shape-driven cardiac model. The visual information is expressed through an intensity-based grouping module. The anatomical constraint accounts f... View full abstract»

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  • FASU: a Full Automatic Segmenting System for Ultrasound images

    Publication Year: 2002, Page(s):90 - 94
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (563 KB) | HTML iconHTML

    In this paper, we propose a novel segmenting system for ultrasound images. This solution is separated into three steps. First, we filter noise by using the "peak-and-valley" with scanning pixels along the Hilbert curve. Then we use the "Cubic Spline Interpolation" between local peaks and valleys to smooth the image. Second, we present windows adaptive threshold, to eliminate trial and error, as th... View full abstract»

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  • Dense disparity maps in real-time with an application to augmented reality

    Publication Year: 2002, Page(s):225 - 230
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (467 KB) | HTML iconHTML

    This work presents a technique for computing dense disparity maps from a binocular stereo camera system. The methods are applied in an Augmented Reality setting for combining real and virtual worlds with proper occlusions. The proposed stereo correspondence technique is based oil area matching and facilitates an efficient strategy by using the concept of a three-dimensional similarity accumulator ... View full abstract»

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  • Segmentation of complex buildings from aerial images and 3D surface reconstruction

    Publication Year: 2002, Page(s):215 - 219
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (846 KB) | HTML iconHTML

    This paper presents a new method for extraction of buildings in aerial images. We first present a method based on rectangular buildings, which are the most common constructions. We then extend this method to more complex shapes by decomposition in a set of rectangles. These rectangles are used to enhance a 3D reconstruction of the digital elevation model (DEM). Based on stereo data, we use the DEM... View full abstract»

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  • A unified prediction method for heterogeneous weather radar patterns

    Publication Year: 2002, Page(s):296 - 303
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (713 KB) | HTML iconHTML

    This paper describes a prediction method, the Dynamics Texture (DT) method, of three different radar echo image sequences based on partial difference equations (PDEs) and an extended optical flow over time. Three image patterns are observed from precipitation-, lightning-, and satellite-radar sites. Such patterns exhibit development, disappearing, and fusion processes with local discontinuities. T... View full abstract»

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  • CV-SDF - a model for real-time computer vision applications

    Publication Year: 2002, Page(s):325 - 329
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (230 KB) | HTML iconHTML

    This paper presents a model for real-time computer vision applications based on the synchronous dataflow (SDF) methodology. To accomplish the needs of computer vision applications (mainly access to pixel neighborhood and access to previous video frames) a new buffer concept called Structured Buffers replaces the FIFO buffers used in the SDF model. The model minimizes the system's latency and memor... View full abstract»

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  • A PDA-based face recognition system

    Publication Year: 2002, Page(s):19 - 23
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB) | HTML iconHTML

    In this paper, we present a PDA-based face recognition system as well as some of the associated challenges of developing a PDA-based face recognition system. We describe a prototype system built from an off the shelf PDA, and introduce algorithms for image preprocessing to enhance the quality of the image by sharpening focus, and normalizing both lighting condition and head rotation. We use a unif... View full abstract»

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  • A real-time precrash vehicle detection system

    Publication Year: 2002, Page(s):171 - 176
    Cited by:  Papers (23)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB) | HTML iconHTML

    This paper presents an in-vehicle real-time monocular precrash vehicle detection system. The system acquires grey level images through a forward facing low light camera and achieves an average detection rate of 10Hz. The vehicle detection algorithm consists of two main steps: multi-scale driven hypothesis generation and appearance-based hypothesis verification. In the multi-scale hypothesis genera... View full abstract»

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