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Table 2 Comparison of performances of different algorithms after adding noise

From: Improved region growing algorithm for the calibration of flaking deterioration in ancient temple murals

Method Without noise 10% salt and pepper noise Gaussian noise with an average square deviation of 10
Method in reference [15]
 Mean error (pixels) 2.69 3.04 2.98
 Error standard variance 3.97 4.15 4.09
Method in reference [16]
 Mean error (pixels) 2.46 2.83 2.70
 Error standard variance 2.71 3.11 2.99
Method of this article
 Mean error (pixels) 1.91 1.97 1.96
 Error standard variance 1.82 1.85 1.85