Table 5 The SSIM between defect 3 and its sound area, before and after applying the proposed processing method

From: Simulation-aided infrared thermography with decomposition-based noise reduction for detecting defects in ancient polyptychs

Position

Raw image of sample A

Processed image of sample A

Raw image of sample B

Processed image of sample B

Defect 3

0.65

0.64

0.66

0.35

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