Dehshiri Mohammad, Ghavami Sabouri Saeed, Khorsandi Alireza
J Opt Soc Am A Opt Image Sci Vis. 2021 Jan 1;38(1):1-9. doi: 10.1364/JOSAA.401280.
We report on the quality assessment of an optical coherence tomography (OCT) image. A set of recent digital filters are used for denoising the interferometric signals. It is found that when a combination of continuous wavelet transform (WT) decomposition and the WT denoising techniques is imposed on raw signals, the highest signal-to-noise ratio of 17.8 can be reached. The structural similarity (SSIM) index is eventually employed to evaluate the modality of the reconstructed OCT image. Further, we found out that a SSIM value of about 0.95 can be reached, independent of the method used for envelope extraction.
我们报告了光学相干断层扫描（OCT）图像的质量评估。一组最近的数字滤波器用于对干涉信号进行去噪。研究发现，当将连续小波变换（WT）分解和WT去噪技术相结合应用于原始信号时，可达到最高17.8的信噪比。最终采用结构相似性（SSIM）指数来评估重建的OCT图像的形态。此外，我们发现，无论用于包络提取的方法如何，都可以达到约0.95的SSIM值。
