X射线摄影技术在漆下彩画识别中的应用

针对遭到油漆涂抹的传统彩画作品,为了实现对图案的无损提取,本研究使用X射线摄影技术,又称X光成像(照相)技术,利用X射线对不同物质的穿透能力有别,在底片上成像的灰度与物体材质、密度、厚度等密切相关的特点,最终得到分界清晰的黑白图像。此类病类常见于建筑彩画中,建筑彩画意蕴深厚、技法繁缛,极具研究价值,但其中很多关键信息却已失传。经X射线摄影技术辅助,封存在油漆层下的彩画图案得以重见天日,此法与其他修复方法之间形成互补,为漆下彩画的完美修复提供了可能。

Application of X-ray photography in recovering painted-over color paintings

X-ray photography is a type of X-ray imaging (photographic) technique. Known as Roentgen rays, X-rays are not visible to naked eye and can penetrate objects and expose photographic films. The penetrating power of X-ray to different substances is different. The grayscale imaged on the film is closely related to the material, density and thickness of objects. Therefore, the final result is a clearly defined white and black image. In our study, the architectural paintings selected have deep implications and utilized complicated techniques, and therefore have great research value. However, much of the key information about them has been lost because the paintings were smeared and painted over. With the help of X-ray photography, the patterns of the color paintings hidden under the top paint layers can be brought to light again. This method complements other repair methods, making possible the perfect restoration of color paintings hidden under the top paint layer.