Non-reference definition evaluating method and system for full-slice image
A sharpness and image technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems that the sharpness evaluation method is not suitable for sharpness evaluation, high image score, and sharpness impact, so as to avoid score differences , improve evaluation efficiency, and achieve effective identification
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[0038] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0039] Such as figure 1As shown, the no-reference sharpness evaluation method of the full-slice image provided by the present invention includes: adopting a pyramid multi-layer data structure to store digital images, and dividing each layer image of the pyramid multi-layer data structure into several image blocks on average; The method divides the strong edge in the gradient magnitude histogram of the image block, calculates the strong edge strength from the gradient maximum value and width of the stron...
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