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2003 IEEE International Workshop on Computer Architectures for Machine Perception

12-16 May 2003

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Displaying Results 1 - 25 of 41
  • [Cover]

    Publication Year: 2003, Page(s): C1
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  • [Title page]

    Publication Year: 2003, Page(s): i
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  • Copyright page

    Publication Year: 2003, Page(s): ii
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  • Table of contents

    Publication Year: 2003, Page(s):iii - iv
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  • Illumination correction in digital images

    Publication Year: 2003, Page(s):4 pp. - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2349 KB) | HTML iconHTML

    Illumination in an image often needs to be corrected or adjusted for several reasons. Recognition of images, such as those of faces, that are based on image data as patterns depends on having the lighting direction of the query image and that of the database images be aligned. In computational video, acquired images are often texture mapped to blend with computer generated polygonal surfaces. The ... View full abstract»

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  • Adaptive aperture control for image enhancement

    Publication Year: 2003, Page(s):7 pp. - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2720 KB) | HTML iconHTML

    Image processing strongly relies on the quality of the input images, as images of good quality can significantly decrease the development effort for image processing and analysis algorithms. A flexible acquisition system for image enhancement, which is able to operate in real time under changing brightness conditions, is suggested. The system is based on controlling the aperture of the lens, which... View full abstract»

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  • Brain-like computer architecture

    Publication Year: 2003, Page(s):12 pp. - 23
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2777 KB) | HTML iconHTML

    This paper is concerned with novel approaches to solve performance and addressing problems inherent in computer systems. The core of the neuron-like processing machine (NLPM) comprised of a unique type of computer architecture for constructing massively parallel processing machines, with unique types of pattern recognition system and addressing mechanisms that enhances the performance for identifi... View full abstract»

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  • 2D still-image segmentation with CNN-Amoeba

    Publication Year: 2003, Page(s):8 pp. - 31
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3502 KB) | HTML iconHTML

    This paper introduces a still image segmentation technique based on an active contour obtained via single-layer CNNs. The contour initially laid on the frame of the image shrinks, deforms and multiplies until it matches the edges of each of the objects present in the scene. The shape of each object in the image is accurately extracted and nested objects, if any, are correctly detected. Experimenta... View full abstract»

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  • Object classification using a MLP on a selective tuning model

    Publication Year: 2003, Page(s):8 pp. - 39
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3995 KB) | HTML iconHTML

    Researchers have argued that an attentional mechanism is required to perform many vision tasks. In this paper we propose an approach to object classification that is based on the multi layer perceptron neural network implemented on the selective tuning model, in order to classify the scan-path of an object. A form of scan-path is obtained using the selective tuning model. The neural network takes ... View full abstract»

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  • Calibrating a motion detection system by means of a distributed genetic algorithm

    Publication Year: 2003, Page(s):12 pp. - 51
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4258 KB) | HTML iconHTML

    Motion detection systems for visual surveillance and monitoring purposes have aroused interest in the computer video community for many years. The main task of these applications is to identify (and track) moving targets. Usually, these applications requires that a large number of parameters is tuned in order to work properly. In the traffic monitoring application we have developed about thirty pa... View full abstract»

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  • Object recognition and cognitive map formation using active stereo vision in a virtual world

    Publication Year: 2003, Page(s):10 pp. - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3378 KB) | HTML iconHTML

    In this paper we describe an algorithm for object recognition and cognitive map formation using stereo image data in a 3D virtual world where 3D objects and a robot with stereo imaging system are simulated. Stereo imaging system is simulated so that the actual human visual system properties such as focusing, accommodation, field of view are parameterized. Only the stereo images obtained from this ... View full abstract»

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  • VIRES: a distributed open architecture for pictorial database

    Publication Year: 2003, Page(s):8 pp. - 69
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2684 KB) | HTML iconHTML

    In this paper we describe VIRES (visual information retrieval extendible system) an open distributed pictorial database for image retrieval. The retrieval methods, pictorial indexing and data are distributed over the network. VIRES has been designed as an open architecture. The system is based on the concept of distributed model via dictionary in order to reach a good versatility without changing ... View full abstract»

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  • Load balancing algorithms for CBIR environments

    Publication Year: 2003, Page(s):11 pp. - 80
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2379 KB) | HTML iconHTML

    CBIR systems, which typically manage a great amount of multimedia information, need efficient implementations to give an answer in a proper response time. Distributed solutions on heterogeneous clusters offer a good cost/performance ratio to solve this problem. One of the critical parameters to be tuned is the load assigned to each of the cluster nodes. This paper presents a new load balancing alg... View full abstract»

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  • Distributed image retrieval on DAISY

    Publication Year: 2003, Page(s):5 pp. - 85
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2529 KB) | HTML iconHTML

    The paper describes an application of image retrieval based on DAISY architecture (distributed architecture for intelligent system). The creation of pictorial indexes may require a number of hours depending on the size of the pictorial data base. The problem can become more complex in the case of distributed database systems. In both cases a distributed architecture can be the natural and more eff... View full abstract»

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  • eXEDRA: a complete open source architecture for paper document recognition

    Publication Year: 2003, Page(s):9 pp. - 94
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4316 KB) | HTML iconHTML

    The automatic document recognition is fundamental for office automation becoming every day a more powerful tool in those fields where information is still on paper. Document recognition follows from data acquisition, from both journals, and entire books in order to transform them in digital objects. We present a new architecture for document recognition that follows the open source methodologies f... View full abstract»

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  • Monitoring terrain database integrity through aircraft sensor consistency checking: architecture and flight test results

    Publication Year: 2003, Page(s):2 pp. - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (217 KB) | HTML iconHTML

    This paper discusses the architecture and flight test results of a digital elevation model (DEM) integrity monitor for a synthetic vision system (SVS). An SVS provides pilots with either a heads down display (HDD) or a heads up display (HUD) containing aircraft state, guidance and navigation information, and a virtual depiction of the terrain as viewed "from the cockpit". Introduction of SVS techn... View full abstract»

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  • A robust QoS forecasting technique for a dynamic, distributed real-time testbed

    Publication Year: 2003, Page(s):4 pp. - 100
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1937 KB) | HTML iconHTML

    Dynamic, distributed, real-time control systems must control changing environments in a timely manner despite the fact that the system's load and timing vary in a way that is not characterizable by time-invariant statistical distributions. A quality of service (QoS) manager has been implemented that forecasts timing constraint violations in such systems and corrects them before they occur. The maj... View full abstract»

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  • Toward a benchmark for distributed real-time sensor fusion for air traffic control

    Publication Year: 2003, Page(s):12 pp. - 112
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6333 KB) | HTML iconHTML

    Given the overall increasing trend of airspace demand by commercial, military, and general aviation, researchers are developing new software tools to enhance the level of automation in air traffic control systems to alleviate the already-crowded airspace by allowing controllers and pilots more freedom in planning and conducting flights. These tools utilize high-performance commercial workstations ... View full abstract»

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  • Evaluating color instruction set extension for real-time vector quantization

    Publication Year: 2003, Page(s):8 pp. - 120
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3594 KB) | HTML iconHTML

    Vector quantization (VQ) is widely used for color image and video compression. However, its high computational overhead prohibits many applications in real-time systems. This paper presents a novel method to accelerate full-search VQ algorithm by adding quantized color pack extension (QCPX) instruction set architecture (ISA). QCPX not only supports a packed 16-bit YCbCr data format but also obtain... View full abstract»

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  • Memory considerations for high performance SIMD systems with on-chip control

    Publication Year: 2003, Page(s):12 pp. - 132
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2623 KB) | HTML iconHTML

    Although arrays of SIMD PEs can be built with very high operating frequencies, problems exist in keeping the array busy. The inherent mismatch between host and array makes it difficult to maintain high array utilization: either the rate of instruction issue is very low or PE data locality is compromised, having the same effect. Our solution is based on an array control unit (ACU) design that expan... View full abstract»

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  • A parallel algorithm and architecture for object recognition in images

    Publication Year: 2003, Page(s):16 pp. - 148
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4675 KB) | HTML iconHTML

    The problem of tree pattern matching for object recognition in images is computationally intensive in nature. In two-dimensional images, the objects can be represented through multiscale decomposition as tree structures. The pattern tree representing an object can be matched with a subject tree representing an image in order to detect the objects within the image. Several sequential, parallel and ... View full abstract»

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  • Design of a language-independent parallel string matching unit for NLP

    Publication Year: 2003, Page(s):7 pp. - 155
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1190 KB) | HTML iconHTML

    In natural language processing applications, string matching is the main time-consuming operation due to the large size of lexicon. Data dependence is minimal in string matching operations, and hence it is ideal for parallelization. A dedicated hardware for string matching that uses memory interleaving and parallel processing techniques can relieve the host CPU from this burden, thereby making the... View full abstract»

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  • Design and implementation of a high performance matrix multiplier core for Xilinx Virtex FPGAs

    Publication Year: 2003, Page(s):4 pp. - 159
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3015 KB) | HTML iconHTML

    Matrix multiplication is a core operation in digital signal processing operations with a variety of applications such as image processing, computer graphics, sonar processing and robotics. This paper presents the design and implementation of a high performance, fully parallel matrix multiplication core. The core is parameterised and scalable in terms of the matrices' dimensions (row and column num... View full abstract»

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  • A comparative study of various face recognition algorithms (feature based, eigen based, line based, neural network approaches)

    Publication Year: 2003, Page(s):12 pp. - 171
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2830 KB) | HTML iconHTML

    As continual research is being conducted in the area of computer vision, one of the most practical applications under vigorous development is in the construction of a robust real-time face recognition system. While the problem of recognizing faces under gross variations remains largely unsolved, a demonstration system as proof of concept that such systems are now becoming practical have been devel... View full abstract»

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  • Effectiveness of a VLIW architecture in a data parallel image application

    Publication Year: 2003, Page(s):12 pp. - 183
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4450 KB) | HTML iconHTML

    In this paper we report on the improvements obtained by using a VLIW approach to handle an image processing application for embedded printing systems. This field of research is gaining significance especially today: the goal in business applications is to achieve high speed in computations while maintaining low cost and low power consumption. For this purpose the VLIW approach, which was originall... View full abstract»

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