Abstract:

 In recent years, due to the various environmental and artificial factors, murals are destroyed to some extent. In order to make people appreciate the original style and features of murals, carry on the research and development of these cultural resources, and restore the original frescoes appearance, the paper proposes a murals fade and scratch repair algorithm. Based on Lαβ color space, for the first time, this algorithm proposes to use the color clustering and masking algorithm to segment and extract the damaged mural regions. Besides, according to the drawback that the transmission direction of the FMM algorithm does not fully cover the to-be-repaired regions, we propose to use some features of gradient histogram to optimize the transmission direction. Experiments prove that the algorithm has good effect on repairing damaged murals.

Key words: mural inpainting;Lα&beta, color space;color clustering;masking algorithm;FMM;gradient histogram