Noisy Medical Image Enhancement based Dyadic Wavelet
Zhenghong Huang, Xia Li · International Journal of Signal Processing Image Processing and Pattern Recognition · 2018
We introduce in the paper a method for completing Magnetic Resonance Image(MRI) feature processing by multiresolution representations.The image is decomposed using dyadic wavelet transformation.A new threshold is proposed by way of different thresholds according to the different scales of wavelet coefficients to deal with the wavelet coefficients.The nonlinear enhancing operator is applied for wavelet coefficients with the enhancement method in the corresponding scales.Our results show that the proposed method outperforms conventional enhancement method, the information entropy and contrast improvement index of the images is improved, enhances edge texture of images.