...Li Hong‐jun; Hu Wei; Xie Zheng‐guang; Wang Wei Purpose The paper aims to do some further research on grey relational analysis applied in wavelet transform, and proposed a grey relational threshold algorithm for image denoising. This study tries to suppress the noise while retaining the edges...

... is the eight pixels around the noisy pixel, to predict its intensity value and to solve the problems which exist in the image denoising filter method. Findings The experiment results show that the improved filter model can effectively eliminate image noise, preserve the image's details and edges, increase...