Abstract:
A hybrid image denoising method based on an adaptive pulsed-couple neural network(PCNN)optimized by bidimensional empirical mode decomposition(BEMD)and the grey wolf optimization(GWO)is proposed. The BEMD decomposed an original image into various bidimensional intrinsic mode functions and a residual, and the decomposed components would be denoised by PCNN optimized with GWO, respectively. The wolf pack algorithm was used to optimize the PCNN parameters. A denoised image was obtained after reconstructing the denoised components. The advantages of this method include:(1)Deter-mining the key parameters of PCNN effectively and improving the convergence speed of the model;(2)Effectively solving the problem of high intensity noise suppression;(3)Preserving the details of the original image completely by isolating the noise points and recovering the original pixels.