Image analysis – Applications – Biomedical applications
Patent
1998-11-17
2000-12-19
Johns, Andrew W.
Image analysis
Applications
Biomedical applications
382279, 382284, 382162, G06K 900
Patent
active
061636177
ABSTRACT:
A method of diagnostic image reconstruction from projection data is provided. It includes generating projection data followed by a convolution of the same. The convolved projection data is then scaled into unsigned, fixed precision words of a predetermined number of bits. The words are then split into a predetermined number of color channels corresponding to color channels of a multi-color rendering engine (150). Simultaneously and independently, the split words are backprojected along each of the color channels to obtain backprojected views for each color channel. The backprojected views for each color channel are accumulated to produce separate color images corresponding to each color channel. Finally, the separate color images are recombined to produce an output image. In a preferred embodiment, prior to the convolution of the projection data, a rebinning operation is performed to ensure that the projection data is in a parallel format. In addition, after convolving the projection data, a selective pre-interpolating step of linear or higher order is optionally performed on the projection data.
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S.G. Azevedo, "Model-Based Computed Tomography for Nondestructive Evaluation," Ph.D. Thesis Abstract, University of California, Davis, 1990.
Heuscher Dominic J.
Matthews David D.
Johns Andrew W.
Nakhjavan Shervin
Picker International Inc.
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