12753 search results - page 2294 / 2551 » is 2002 |
127
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TMI
2002
15 years 3 months ago
2002
We describe a method for computing a continuous time estimate of tracer density using list-mode positron emission tomography data. The rate function in each voxel is modeled as an ...
143
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TMI
2002
15 years 3 months ago
2002
Abstract--Activation time (AT) imaging from electrocardiographic (ECG) mapping data has been developing for several years. By coupling ECG mapping and three-dimensional (3-D) + tim...
142
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TMM
2002
15 years 3 months ago
2002
This paper presents a model for watermarking and some attacks on watermarks. Given the watermarked signal, the so-called Wiener attack performs minimum mean-squared error (MMSE) es...
157
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TMM
2002
15 years 3 months ago
2002
Abstract--The Internet provides a universal platform for largescale distribution of information and supports inter-organizational services, system integration, and collaboration. U...
112
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TMM
2002
15 years 3 months ago
2002
In this paper a hybrid fractal and Discrete Cosine transform (DCT) coder is developed. Drawing on the ability of DCT to remove inter-pixel redundancies and on the ability of fracta...