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Table 1 The SNRs of original single-channel grayscale image and single-channel image processed by each preprocessing method

From: A Preprocessing Algorithm Based on Heterogeneity Detection for Transmitted Tissue Image

Image SNR/dB
Mean filtered image 7.3427
Gaussian filtered image 7.3637
100 frames of accumulated image 8.0141
Image processed by the joint preprocessing algorithm 8.4817
Original image 5.8794