Grid noise elimination method capable of keeping acutance
A noise elimination and grid technology, applied in image enhancement, image analysis, instruments, etc., can solve the problems of high-speed operation status application, consumption of large computing resources, unsatisfactory image processing speed, etc., and achieve low requirements for computing resources, reduce Effects on System Resource Cost
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[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and the embodiments thereof, but the protection scope of the present invention is not limited to the scope described in the embodiments.
[0035] The present invention adopts 2×2 median filtering to carry out non-linear processing on the image. In order to maintain the sharpness of the edge in the scene, the smooth area is judged before filtering, and the median filtering process will not be performed on the non-smooth area.
[0036] 1 Non-smooth region voting (including edge detection process and voting process).
[0037] 1.1 Edge detection
[0038] Edge detection is performed in both horizontal and vertical directions within a 3×3 range on the lower right of the current point.
[0039] Such as figure 1 As shown, the current point is a.
[0040] The horizontal correlation points are b and c, if (a-b)*(b-c)>0,
[0041] It is determined that there is an edge in the h...
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