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首页> 外文期刊>Journal of Imaging Science and Technology >Calibration and Spectral Reconstruction for CRISATEL: An Art Painting Multispectral Acquisition System
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Calibration and Spectral Reconstruction for CRISATEL: An Art Painting Multispectral Acquisition System

机译：CRISATEL的校准和光谱重建：艺术绘画多光谱采集系统

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摘要

The CRISATEL multispectral acquisition system is dedicated to the digital archiving of fine art paintings. It is composed of a dynamic lighting system and of a high resolution camera equipped with a CCD linear array, 13 interference filters and several built-in electronically controlled mechanisms. A custom calibration procedure has been designed and implemented. It allows us to select the parameters to be used for the raw image acquisition and to collect experimental data, which will be used in the post processing stage to correct the obtained multispectral images. Various techniques have been tested and compared in order to reconstruct the spectral reflectance curve of the painting surface imaged in each pixel. Realistic color rendering under any illuminant can then be obtained from this spectral reconstruction. The results obtained with the CRISATEL acquisition system and the associated multispectral image processing are shown on two art painting examples.
机译：CRISATEL多光谱采集系统专用于美术绘画的数字存档。它由动态照明系统和配备CCD线性阵列，13个干涉滤光片以及几个内置电子控制机构的高分辨率相机组成。已设计并实施了自定义校准程序。它使我们能够选择用于原始图像采集的参数并收集实验数据，这些数据将在后处理阶段中用于校正获得的多光谱图像。为了重建在每个像素中成像的绘画表面的光谱反射率曲线，已经测试并比较了各种技术。然后可以从该光谱重建中获得在任何光源下的逼真的色彩再现。用CRISATEL采集系统和相关的多光谱图像处理获得的结果显示在两个绘画实例上。

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