关键词: 光学相干层析成像图像去噪, 小波变换, 维纳滤波

Abstract: Speckle phenomenon is both as an information carrier and as noise resource in OCT image. According to this characteristics, a new image denoising method is presented by combining wavelet transform and wiener filter in this paper. OCT image is decomposed to four frequency sub-band images by wavelet tranform, among the different-band images, the three hight frequency sub-band images are denoised by Wiener filter, while keeps the low frequency image without any change, the three hight frequency detail images with Wiener filter and low frequency image are composed. The experimental results show this method is effective.

Key words: Optical Coherence Tomogrphy（OCT） images denoising, wavalet transform, Wiener filtering