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Table 2 The processing time of the proposed method

From: Restoration method of sootiness mural images based on dark channel prior and Retinex by bilateral filter

Method Time
First step Data preprocessing Radiometric Correction About 600 s
MNF About 900 s
Inverse MNF About 120 s
Second step Sootiness Mural Image Produce 3.5 s
Third step Preliminary Sootiness Removal 2.7 s
Fourth step Fine Sootiness Removal 53.9 s