Image denoising method and device
An image and image block technology, applied in the field of image denoising methods and devices, can solve the problems of low accuracy of image denoising methods and the like
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[0061] As an implementation manner, step S250 may include:
[0062] Call the separation Bregman iterative algorithm to solve and calculate the mixed noise removal model Until the preset number of iterations is satisfied, the denoised image is output.
[0063] Further, the preset number of iterations is K, and the call separation Bregman iterative algorithm is used to solve and calculate the mixed noise removal model Until the preset number of iterations is met, output the denoised image, including:
[0064] definition g(α G )=λ||α G || 0 and u = φ G alpha G ;
[0065] Invoking the separation Bregman iterative algorithm, the Transform into the following three formulas to solve respectively: as well as Both μ and λ represent the regularization factor for 0;
[0066] Solving by Split Bregman Iteration (SBI) The optimization problem process is as follows:
[0067] Given α G ,against Calculate the partial derivative of u and calculate the estimated value of ...
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