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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