A median filter image processing method and device
A technology for filtering images and processing methods, which is applied in the field of image processing and can solve the problems of unclear images, high algorithm complexity and low efficiency.
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[0041] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.
[0042] see image 3 , is a flowchart of a median filter image processing method according to an embodiment of the present invention. The method can be used to well remove the discrete salt and pepper noise points in the noisy image while maintaining the high-frequency edges of the image. The method specifically includes the following steps:
[0043] First enter step S301 to input an N×N pixel matrix, where N is a positive integer greater than or equal to 3 and is an odd number. like figure 1 As shown, it is a 5x5 pixel matrix, which contains 5 rows and 5 columns with a total of 25 pixels. The coordinates corresponding to the first pixel are (1, 1) (the first row and the first column), the coordinates corresponding to the second pix...
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