基于骨架提取和颜色迁移的古代碑文虚拟修复

Virtual restoration of Houma convenant tablets based on skeleton extraction and color transfer

针对古代碑文石质风化、字迹变淡、模糊不清等问题,提出一种古碑文虚拟修复方法。以侯马盟书为例,基于HSV空间图像增强技术,结合八邻域像素值分析法对盟书文字骨架进行提取,采用形态学运算对骨架进行毛刺去除和均匀膨胀,恢复残缺笔段,使用颜色迁移的方法使修复后的文字与其背景保持原有色彩和风格。实验结果表明,该方法有效修复了侯马盟书模糊的字迹和褪掉的色彩,更加符合人的视觉特性。

A method of ancient inscription virtual restoration was proposed,in accordance with the problems of ancient stone inscriptions such as stone weathering,writing fade,blur and so on.Taking Shanxi Houma convenant tablets as example,based on HSV space image enhancement technology,the pixel analysis of eight-neighbor was combined to extract skeleton of written words from Houma convenant tablets,morphological operation was used to remove burrs and dilate the skeleton uniformly to get the missing stroke.The method of color transfer was adopted to maintain the text and background of its original color and style.Experimental results show that the blurred handwriting and faded color of Houma convenant tablets can be repaired effectively by digital image processing,making it more in line with the characteristics of human visual system.