Image Approximation Method Based on Extended Smoothlets Transformation
An approximation method and image technology, applied in the field of image approximation and image processing, can solve problems such as smoothlets’ incomplete definition of the transition zone, and achieve accurate expression
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[0052] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0053] The present invention mainly adopts the method of computer simulation for verification, and all steps and conclusions are verified correctly on MATLAB-R2015a. The specific implementation steps are as follows:
[0054] Step 1. Block the image
[0055] Input a grayscale image, the image size is 256×256. The image is layered, the maximum layer J=8, because the size of the block image is 1×1 and 2×2 contains too few pixel values, it is meaningless to approximate them, so the size of the smallest image block is set to 4 . For layer j, the tiled image size is 2 j ×2 j (j=2, 3, ..., 8), and divide 256×256 into 7 layers, the size of the first layer image block is 256×256, and record the coordinates of the upper left corner of the image, namely (1, 1); The size of the second-layer image bl...
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