Image denoising method based on n‑smoothlets
An image and image block technology, applied in the field of image denoising based on N-Smoothlets, can solve the problem of poor denoising method, and achieve the effect of reducing computational complexity and improving line singularity
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[0143] Embodiment: Image denoising method based on N-Smoothlets
[0144] The image denoising algorithm based on multi-scale geometric analysis Smoothlet transform needs to change the weight λ many times to obtain the best denoising image, which seriously increases the computational complexity of the algorithm and limits its development. Therefore, this paper proposes an image denoising algorithm based on N-Smoothlets. This algorithm narrows down the search range of λ and reduces the computational complexity of the algorithm by seeking the relationship between the weight factor λ and the noise intensity in the image. At the same time, since N-Smoothlets has at most N reference lines in each macroblock to fit the edge, it can better describe the high-frequency information in the image.
[0145] 1 weight selection
[0146] In formula (1), Indicates the difference between the approximated image and the original image, therefore, the smaller the value, the better the approximatio...
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