二维-三维特征融合的古铜镜纹饰提取方法  

A 2D-3D Feature Fusion Method for Extracting Ornamentation of Ancient Bronze Mirrors

作　　者：王露 郭瑞 王莹[2,4] 周强[1] 朱建锋[2,4] 冯健[3] WANG Lu;GUO Rui;WANG Ying;ZHOU Qiang;ZHU Jianfeng;FENG Jian(School of Electrical and Control Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;School of Material Science and Engineering,Shaanxi University of Science&Technology,Xi’an 710021,China;Xi’an Institute of Conservation and Archaeology on Cultural Heritage,Xi’an 710068,China;Key Laboratory of Underground Conservation Material and Technique,Ministry of Education,Xi’an 710021,China)

机构地区：[1]陕西科技大学电气与控制工程学院,西安710021 [2]陕西科技大学材料科学与工程学院,西安710021 [3]西安市文物保护考古研究院,西安710068 [4]地下文物保护材料与技术教育部重点实验室,西安710021

出　　处：《实验室研究与探索》2023年第12期1-6,共6页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(52272020);陕西省文物局文保专项资助项目(陕文物函[2020]98号)。

摘　　要：纹饰提取对残损文物数字化修复具有重要意义。针对出土的西汉铜镜纹饰表面铜绿覆盖、边缘侵蚀模糊、轮廓特征难以提取等问题,提出了一种融合二维和三维特征的古铜镜纹饰提取方法。借助微距镜头相机和超景深显微镜采集古铜镜碎片的二维和三维影像,根据2种维度信息的不同特点进行图像预处理和二维、三维特征模型的构建。将稀疏表示技术与古铜镜表面纹饰的二维和三维特征相融合,提取完整的古铜镜纹饰轮廓,并通过形态学处理和轮廓平滑技术强化纹饰图像。结果表明,“高清相机+超景深显微镜”的原始纹饰图案采集模式结合基于稀疏表示的特征融合技术能够解决薄小碎片纹饰图案难以准确提取的问题,可以原真性还原古铜镜纹饰。Ornament extraction is of great significance to the digital restoration of damaged cultural relics.To extract ornament of unearthed bronze mirror with copper-green surface overlay,blurred edge erosion and difficulty in contour feature extraction in the Western Han Dynasty,a method of extracting ancient bronze mirror ornaments by fusing two-dimensional and three-dimensional features is proposed.The method collects two-dimensional and three-dimensional images of ancient bronze mirror fragments with the aid of a macro lens camera and a super depth-of-field microscope,respectively,pre-processes the images and constructs two-and three-dimensional feature models according to the different characteristics of the two dimensions of information,uses sparse representation techniques to fuse the two-dimensional and three-dimensional features of the ornament on the surface of ancient bronze mirrors,finally the complete outline of the ornament of ancient bronze mirrors is extracted,and the ornament is enhanced through morphological processing and contour smoothing techniques.The images are enhanced by morphological processing and contour smoothing.The experimental results show that the proposed“high-definition camera+super-depth-of-field microscope”original decoration pattern acquisition mode combined with the feature fusion technology based on sparse representation can solve the problem of difficult to accurately extract the thin and small fragments of ornament,and can restore the ornament of the ancient bronze mirror authentically.

关 键 词：纹饰提取 古铜镜 数字化修复 二维-三维特征融合 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]