ZHANG Ying, XIONG Bang-shu, DENG Hui-bin. Study on noise reduction based on wavelet phase[J]. 2008, 27(10): 39-41. DOI: 10.13873/j.1000-97872008.10.017.
it is necessary to de-noise first as the signal-to-noise ratio of the image is low.Aim at this problem
a new method based on wavelet phases of single scale is proposed.Mutation in the same scale and discontinuity between neighbor phases of noise pixels are used
and the absolute value of the differences between average phases of every pixels and the average phases of 3×3 windows are compared with threshold.The result of experiment indicates the greater plus of signal-to-noise ratio