Iterative processing techniques can often provide useful solutions to problems, especially problems of inversion, when deterministic solutions are impracticable or too costly. These iterative techniques usually requir...
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The use of the discrete cosine transform (DCT) in imagingapplications is still not as extensive as it's properties would imply, due to a comparative lack of available hardware for fast computation. Commercially a...
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Mathematical morphology operations allow object identification based on shape and are useful for grouping a cluster of small objects into one object. Because of these capabilities, we have implemented and evaluated th...
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Surface fitting allows for pose estimation and recognition of objects in range scenes. Unfortunately, surface fitting is computation-intensive. One way to speed-up this task is to use parallelprocessing, since its av...
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imageprocessing places enormous computational demands on current computer systems and in part motivates the design of fine-grained, massively parallel machines. While several architectures have been proposed for imag...
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imageprocessing places enormous computational demands on current computer systems and in part motivates the design of fine-grained, massively parallel machines. While several architectures have been proposed for imageapplications, the approach taken with the Connection Machine has been to use a very large number of simple processors, each with a small amount of local memory, and each capable of communicating in an efficient manner with all other processors. In this report, we give our experience with the Connection Machine on a number of computer vision and vision related problems.
Advanced, three-dimensional laser ranging systems have taken robotic applications such as bin picking, robotic guidance, manipulative tasks, and inspection processes to a new level of technological sophistication. Thi...
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Advanced, three-dimensional laser ranging systems have taken robotic applications such as bin picking, robotic guidance, manipulative tasks, and inspection processes to a new level of technological sophistication. This optical radar provides three-dimensional vision for a robotic system. This then allows tasks to be completed that were not previously possible.
Realistic 3-D scene generation is now a possibility for many applications. One barrier to increased use of this technique is the large amount of computer processing time needed to render a scene. A new parallel comput...
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ISBN:
(纸本)089252796X
Realistic 3-D scene generation is now a possibility for many applications. One barrier to increased use of this technique is the large amount of computer processing time needed to render a scene. A new parallel computer, the NYU Ultracomputer, has been developed which features a shared memory with a combining network. The combining network permits simultaneous reads and writes to the same memory location using a new instruction: the Fetch and Op. These memory references are resolved in the memory access network and result in particularly efficient shared data structures. Basic elements of this architecture are also being used in the design of the gigaflop range RP3 at IBM. Some algorithms typical of image synthesis are explored in the paper and a class of equivalent queue based algorithms are developed. These algorithms are particularly well suited to the Ultracomputer class processor and hold the promise for many new applications of realistic scene generation.
Physicians frequently need to see retinal, biopsy, and other images, produced originally by medical diagnostic equipment and then processed by computers. At present this is done using either time-consuming photography...
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image reconstruction by computer tomography provides a nonintrusive method of imaging the internal structure of objects. From measurements of radiation (e.g. x-rays or gamma rays) passed through an object, it is possi...
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image reconstruction by computer tomography provides a nonintrusive method of imaging the internal structure of objects. From measurements of radiation (e.g. x-rays or gamma rays) passed through an object, it is possible to reconstruct the internal structure. There is great interest in the potential of such methods in industrial applications but a number of problems need to be solved before these opportunities can be realised. The reconstruction process is computationally intensive and requires imaginative parallelprocessingalgorithms to attain ‘real-time’performance. The work carried out has involved evaluating how these algorithms can be used in multiprocessor concurrent architectures to obtain rapid image reconstruction. A suitable computer architecture has been simulated in occam. This allows execution on a collection of transputers.
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