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WEIGHTING METHOD FOR RANDOM DISTRIBUTION SUPPORTING POINT IN FREQUENCY SPACE AND COMPUTER TOMOGRAPHING DEVICE EXECUTING THE SAME
WEIGHTING METHOD FOR RANDOM DISTRIBUTION SUPPORTING POINT IN FREQUENCY SPACE AND COMPUTER TOMOGRAPHING DEVICE EXECUTING THE SAME
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机译:频率空间中随机分布支持点的加权方法和执行相同任务的计算机层析成像设备
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摘要
PROBLEM TO BE SOLVED: To find the weight of a supporting point, which is not positioned in an orthogonal coordinate raster, by finding the weight for the supporting point from the points of a weight cube, converting the function values of points through evaluation functions to function values, multiplying the function values with correspondent interpolation weight and adding the results. SOLUTION: An X-ray radiator 1 and a detector 2 are rotated with a system axial line 4 as a center, and a reagent 3 is irradiated with fan-shaped X-ray beams 5 radiated from the X-ray radiator 1 to different directions. Data supplied from the detecting elements of the detector 2 are supplied to a calculation unit 6 and the calculation unit 6 reconstitutes the tomographic image in the irradiated volume of the reagent 3 and reproduces it on a monitor 7. In this case, the weight for the supporting point is converted to the function values at the points of cube positioned in the three-dimensional interpolation window of 3D griding process at the time of weight interpolation and multiplied with the mutually correspondent interpolation weight, and the results are added.
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