Fresco scaling damage assessment method based on near-infrared hyperspectrum

Abstract

The invention discloses a fresco scaling damage assessment method based on a near-infrared hyperspectrum. The fresco scaling damage assessment method comprises the following steps: obtaining the images of a specific fresco under hundreds of continuous different spectral wavelengths by use of a near-infrared hyperspectral imaging system; observing and locating by use of naked eyes, finding out key positions under different orders of severity of the scaling damage in the fresco, marking the corresponding positions in the corresponding hyperspectral images, and extracting spectral data as a damage spectral standard library of the degrees of scaling; storing and preprocessing the hyperspectral data; and extracting and analyzing the spectral characteristic data. According to the fresco scaling damage assessment method, the visual display of the distribution and the orders of severity of the fresco scaling damage is realized by obtaining the near-infrared hyperspectral images of the fresco and extracting and analyzing the spectral characteristics. The operation process is simple and the reliability of the obtained data is high. Meanwhile, due to noncontact imaging, the fresco surface is not damaged.

Description

technical field [0001] The invention relates to the field of computer-aided protection of cultural relics, in particular to a method for evaluating nail-on disease of murals based on near-infrared hyperspectral. Background technique [0002] Ancient murals are the most distinctive and important part of my country's cultural heritage. Ancient murals are preserved in most of the existing ruins in our country. It is not only a precious material for exploring the characteristics of ancient Chinese aesthetic decoration, but also an important record of the historical process of the development of human civilization, with extremely high historical, artistic and scientific value. These cultural heritages all involve protection technical issues in this industry field. Under the current situation that my country's protection technical personnel are relatively scarce and the level of protection technology is low, the protection task is very urgent. [0003] The optical survey methods...

AI Technical Summary

Problems solved by technology

However, the use of these information technologies mostly focuses on the research and analysis of the texture and color changes of mural images in the visible light band, and the extracted features may not be able to represent the attributes of the mural disease itself, and lack the analysis of the changes in the material and pigment of the mural itself.

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