Binarization image registration method based on improved structural similarity
A technology of structural similarity and binarized images, which is applied in image analysis, image data processing, instruments, etc., can solve the problems that binarized image registration is easy to fall into local extrema and registration fails.
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[0043] Image binarization can simplify data and improve calculation speed. According to analysis, by greatly reducing C 1 、C 2 Size, the characteristic curve of the binarized image still meets the requirements of pixel-level registration. We discuss the direct use of the binarized image for coarse and fine two-level registration, and set the SSIM parameter K 1 =0.000001,K 2 =0.000003, the spatial transformation adopts nearest neighbor interpolation (nearest), and the improved SSIM and NMI are used as the measurement functions respectively to discuss the registration curve and registration algorithm after binarization of single-modal and multi-modal images.
[0044] 1. Unimodal binary image registration
[0045] (1) The relationship curve with the spatial geometric transformation parameters
[0046] Use the grayscale image threshold function to determine the threshold, and then add a correction factor (such as 0.35) to the threshold according to the actual display to bin...
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