Hyperspectral data based mural manuscript information extraction method

A technology for data information and information extraction, applied in the measurement of color/spectral characteristics, etc., can solve the problems of time-consuming and laborious, unfavorable automatic extraction of mural manuscript information, etc., and achieve the effect of improving the extraction efficiency.

Inactive Publication Date: 2014-12-10
北京建筑工程学院
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AI Technical Summary

Problems solved by technology

[0004] These methods mainly use visual discrimination and regional classification methods to obtain the manuscript information of murals, which can intuitively obtain manuscript information, but it is time-consuming and laborious, and does not use automatic extraction of mural manuscript information.

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  • Hyperspectral data based mural manuscript information extraction method

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0022] Such as figure 1 As shown, the mural draft information extraction method based on hyperspectral data of the present invention comprises the following steps:

[0023] In step 101, a mural in a predetermined area is selected as a sample, and hyperspectral data information of the mural sample is obtained.

[0024] In this step, the selection principle of the murals in the predetermined area can be carried out as follows, namely:

[0025] During the selection process, first of all, murals with a smoother surface texture should be selected to reduce data errors caused by undulating bases, and at the same time facilitate the uniform lighting of each part of the mural in the later data collection process; The degree should be relatively mild. Serious diseases such as the sh...

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Abstract

The invention discloses a hyperspectral data based mural manuscript information extraction method which comprises the following steps of: selecting a mural in a presumptive area as a sample, and obtaining the hyperspectral data information of the mural sample; carrying out principal component analysis on the hyperspectral data information so as to obtain a principal component containing effective feature information in the hyperspectral data information, wherein the principal component is the linear combination of each wave band in the hyperspectral data information; according to the weight value of each wave band, selecting feature wave bands in the principal component, and synthesizing a new image by using the selected feature wave bands; and calculating the pixel statistical data of the new image and the pixel statistical data included in the hyperspectral data information of the mural, comparing the pixel statistical data corresponding to the mural with the pixel statistical data of the new image and determining the similarity thereof, and selecting a pixel of the mural with a similarity greater than a preset threshold as a manuscript pixel of the mural.

Description

technical field [0001] The invention relates to a method for extracting mural draft information, in particular to a method for extracting mural draft information based on hyperspectral data. Background technique [0002] Murals are colorful paintings attached to ancient buildings and are mainly used to decorate buildings. They are important material carriers that reflect the historical culture of ancient human social life, religious beliefs, and artistic aesthetics. The murals show the combination of history, culture and art in various periods from different angles, and the draft is the primary information in the mural painting process. It describes the main outline information of the mural content, fully reflects the painter's initial drawing essentials, and shows Painting techniques in different historical periods, so extracting the manuscript information of murals will help researchers to deeply detect the historical information of early artists, and deeply understand the...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01N21/25G01N21/31
Inventor侯妙乐吴育华胡云岗
Owner北京建筑工程学院