Central to `multimedia' imageprocessing is the desire to encode computer graphics data into a standard television signal, complete with line, field, and color subcarrier synchronizing information. The numerous in...
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ISBN:
(纸本)081940943X
Central to `multimedia' imageprocessing is the desire to encode computer graphics data into a standard television signal, complete with line, field, and color subcarrier synchronizing information. The numerous incompatibilities between television and computer display standards render this operation far less trivial than it sounds to anyone who hasn't worked with both types of signals. To simplify the task of encoding computer graphics signals into standard NTSC (North America and Japan) or PAL (most of Europe) television format for display, broadcast, or recording, TRW LSI Products Inc. has introduced the two newest members of it multimedia integrated circuit family, the TMC22090 and TMC22190 digital video encoders.
Vision processing is one of the most computationally intensive tasks required of an autonomous robot. The data flow from a single typical imaging sensor is roughly 60 Mbits/sec, which can easily overload current on-bo...
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ISBN:
(纸本)0819406929
Vision processing is one of the most computationally intensive tasks required of an autonomous robot. The data flow from a single typical imaging sensor is roughly 60 Mbits/sec, which can easily overload current on-board processors. Optical correlator-based processing can be used to perform many of the functions required of a general robotic vision system, such as object recognition, tracking, and orientation determination, and can perform these functions fast enough to keep pace with the incoming sensor data. We describe a hybrid digital electronic/analog optical robotic vision processing system developed at Ames Research Center to test concepts and algorithms for autonomous construction, inspection, and maintenance of space-based habitats. We discuss the system architecture design and implementation, its performance characteristics, and our future plans. In particular, we compare the performance of the system to a more conventional all digital electronic system developed concurrently. The hybrid system consistently outperforms the digital electronic one in both speed and robustness.
The proceedings contain 30 papers. The topics discussed include: an analysis of computer architectural factors contributing to image processor capacity;a very large scale integration (VLSI) system for image reconstruc...
The proceedings contain 30 papers. The topics discussed include: an analysis of computer architectural factors contributing to image processor capacity;a very large scale integration (VLSI) system for image reconstruction from projections;parallel architecture for line-scanned images;multilevel architectures for imageprocessing;a prebuffer algorithm for instant display of volume data;a geometry processor for imageprocessing and pattern recognition;prospects for adaptive window architectures;comparison between co-occurrence matrices, local histograms and curvilinear integration for texture characterization;refinement of spectral methods for use in texture analysis;and image segmentation by cluster analysis of high resolution textured SPOT images.
Among all the numerous parallel structures that have been studied for and involved in imageprocessing, this article gives some elements for an answer to the problem of the choice of some architectures dedicated to Im...
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During the past decade, three major categories of image matching algorithms have emerged: Signal-processing-based, artificial-intelligence-based, and a combination of these methods called hybrid techniques. This paper...
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This paper describes an algorithm, which computes synthetical radiographs from the characteristics of the observed object, of the used X-ray machine and of the recording technique. Some examples of such images synthes...
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A one-dimensional systolic geometry processor (SGP) which is useful in imageprocessing and pattern recognition is described. The geometry processor can be used to enhance processing speed and throughput of the host c...
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We describe the extension of the concepts of size distribution measurement from linear to non linear filtering and from binary to greyvalue imageprocessing. A size-height transform was developed in order to make a sp...
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A quantitative analysis is provided of how specific architectural features of image processors enhance the over-all algorithmic capacity of the corresponding vision system. Such features are discussed at a more detail...
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Synthetic image generator finds a particulary interesting application in simulation. It can be used to assess new optronic systems which can be entirely modelised or even better included in the simulation loop. This p...
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