Research on Image Denoising Method Based on Dual Frequency Domain Transform

An image denoising method based on dual frequency domain transform is proposed to improve the quality of noisy images. Based on the characteristics of useful signals and noise, new high-frequency sub-band coefficients are obtained by weakening and enhancing the high-frequency sub-band coefficients obtained by frequency domain transform to varying degrees. Different noises-reducing methods are emulated to validate the effectiveness of proposed method. The experimental results show that the proposed method can effectively improve the image denoising effect and obtain denoised images with high peak signal-to-noise ratio and structural similarity.