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Image processing method for reducing noise in one image of a sequence of three temporal images and medical imaging apparatus for carrying out the method
Image processing method for reducing noise in one image of a sequence of three temporal images and medical imaging apparatus for carrying out the method
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机译:用于减少三个时间图像序列中的一个图像中的噪声的图像处理方法以及用于执行该方法的医学成像设备
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摘要
A treatment process for images made up of triplets of temporal intensities, (Gt-1, Gt, Gt+1), obtained by previously smoothing three successive images (Ut-1, Jt, Jt+1), where the filtered image was (Jt). The three intensities are then tested to see which of two categories they fall in to and an optimum image obtained with reduced noise. The test (TEST) process checks for two cases. In the first the smoothed temporal intensity (Gt) is substantially different to the other two, so that it (Gt) is taken as the filtered value (Rt) in the central image (Jt). In the second case (Gt) is substantially the same as one or both of the other intensities. An averaging process (MEDIAN) is carried out to find the result (Rt) for the filtered value of the central image (Jt). The pre-smoothing of the 3 images is using a spatial filter (FMH-1D, FMH-2D).
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