Mural painting material multi-spectral image color standard color card and manufacturing method thereof

Abstract

The invention provides a mural painting material multispectral image color standard color card and a making method thereof, and relates to the field of ancient mural protection test research. The method comprises the steps of making a simulated base coat, getting a multispectral image and making a standard color card. A clay tablet is made based on the base coat of a real mural, and known pigments are applied to the clay tablet, so the base coat environment of the real mural is restored to the greatest degree. Multispectral image information of a simulated base coat is acquired to form a database. A standard color card is finally formed, and unknown pigments on the real mural are analyzed using the standard color card. The standard color card enables non-professional personnel to get related mural pigment information through color card contrasting. In addition, the mural painting material multispectral image color standard color card provided by the invention is made by the making method, and the standard color card enables non-professional personnel to get related mural pigment information through color card contrasting.

Description

technical field [0001] The invention relates to the field of experimental research on the protection of ancient murals, in particular to a multi-spectral image color standard color card for mural painting materials and a manufacturing method thereof. Background technique [0002] Based on the principle that different spectra have different frequency responses to different substances, the multi-spectral photography image analysis method uses the multi-spectral photography method to shoot murals, and analyzes the multi-spectral images to achieve the diffuse images of murals and mural pigments containing organic cementing materials Do visual observations, such as diffuse inscriptions, faded pictures, etc. [0003] However, a large amount of inorganic pigments are used in Dunhuang murals. Research in recent years has found that in addition to inorganic pigments, there are also some organic dyes. In the overall observation of the murals, due to the age of some inorganic pigments...

AI Technical Summary

Problems solved by technology

In the overall observation of the murals, some inorganic pigments have discoloration, fading, abrasion and other phenomena due to the age of the pigments due to the influence of natural and man-made environments. Therefore, pigments with different components of the same color system have similar hues in the visible light range and are difficult to identify.

Moreover, some organic dyes that may exist usually have a small area, and the coverage is very thin, and they are degraded, degraded and unrecognizable due to age, and it is impossible to intuitively distinguish the relationship between them and inorganic pigments.

In the detection of mural paint by conventional portable high-precision nondestructive testing equipment, there is a certain degree of blindness in the selection of detection points because there is no reference to the distribution range of the pigment.

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