In order to improve the image denoising ability, the wavelet transform (WT) and independent component analysis (ICA) are both
introduced into image denoising in this paper. Although these two algorithms have their own advantages in image denoising, they
are unable to reduce noises completely, which makes it difficult to achieve ideal effect. Therefore, a new image denoising method
is proposed based on the combination of WT with ICA (WT-ICA). For verifying the WT-ICA denoising method, we adopt four
image denoising methods for comparison: median filtering (MF), wavelet soft thresholding (WST), ICA, and WT-ICA. From the
experimental results, it is shown that WT-ICA can significantly reduce noises and get lower-noise image. Moreover, the average
of WT-ICA denoising image’s peak signal to noise ratio (PSNR) is improved by 20.54% compared with noisy image and 11.68%
compared with the classical WST denoising image, which demonstrates its advantage. From the performance of texture and edge
detection, denoising image byWT-ICA is closer to the original image.Therefore, the new method has its unique advantage in image
denoising, which lays a solid foundation for the realization of further image processing task.