基于多尺度积分不变量的碑刻数字拓片制作研究

Digital rubbings of stone inscriptions based on multi-scaleintegral invariants surface filtering

拓片艺术是我国悠久文化传统中的一项独特技艺。目前,采用二维图像处理技术制作碑刻数字拓片存在以下不足:首先,碑刻图像的采集质量容易受到光照条件的影响;其次,由于图像仅包含颜色和灰度信息,缺乏碑刻深度数据,限制了数字拓片的细节表现和准确性。为解决上述问题,本文提出一种基于多尺度积分不变表面过滤技术的碑刻数字拓片制作方法。使用多尺度体积积分不变量对碑刻三维模型表面进行特征识别,并将结果存储在特征向量中,利用灰度渐变颜色对三维模型进行假着色实现可视化,从而渲染制作数字拓片。通过实践验证,基于三维模型的数字拓片制作方法显示出了良好的可行性,不仅能够增强数字拓片的视觉效果和细节丰富性,而且可为文化遗产的数字化存档和研究提供更为精确和全面的数据支持,对于保护和传承我国宝贵的文化遗产具有重要的现实意义。

The art of rubbings is a traditional skill with a long history in China.Currently,the creation of digital rubbings using two-dimensional image processing techniques has the following shortcomings:firstly,the quality of epigraphic image capture is easily affected by lighting conditions;secondly,as the images contain only color and grayscale information without depth data of the epigraphs,this limits the detail and accuracy of the digital rubbings.To address these issues,this paper proposes a method for creating digital epigraphy based on multi-scale integral invariant surface filtering technology.Using multi-scale volumetric integral invariants to detect features on the surface of the epigraphic three-dimensional model and storing the results in a feature vector,pseudo-coloring with grayscale gradients is employed to visualize the threedimensional model,thereby rendering the digital rubbings.Practical validation has shown that the method of creating digital rubbings based on three-dimensional models demonstrates good feasibility.It not only enhances the visual effects and richness of details in digital rubbings but also provides more accurate and comprehensive data support for the digital archiving and research of cultural heritage.This holds significant practical significance for the protection and inheritance of our country′s precious cultural heritage.