基于激光点云和近景影像的数字拓片生成方法
发布时间：2018-08-20 13:32
【摘要】：传统的拓片制作过程复杂,天气、光照、环境等客观条件都会影响拓片质量,而且手工拓片会对文物本体造成伤害。随着信息化技术的发展,提出了利用数码影像制作数字拓片。由于一般的数码影像是中心投影且没有可量测性,生成的数字拓片也没有实际的应用价值,且基于多张影像的数字拓片还存在图像投影、配准等诸多问题。针对上述情况,本文提出了利用三维激光点云和近景影像生成数字拓片的解决方案:首先利用点云和影像配准生成正射影像,然后采用图像增强的方法消除光照不均,再将图像局部自适应阈值二值化,最后采用图像融合的方法将边缘模糊,生成有传统拓片效果的数字拓片。通过实验证明,本文制作数字拓片的方法具有一定的可行性,且制作的文物拓片具有可量测的优越性,为文物数字化存档和研究提供了更丰富的数据。
[Abstract]:The traditional process of making rubbings is complex, such as weather, light, environment and other objective conditions will affect the quality of rubbings, and manual rubbings will cause damage to the body of cultural relics. With the development of information technology, a digital topology using digital image is proposed. Because the general digital image is a central projection and has no measurability, the generated digital topology has no practical application value, and the digital topology based on multiple images still has many problems, such as image projection, registration and so on. In view of the above situation, this paper proposes a solution to generate digital topology using 3D laser point cloud and close-range image: firstly, point cloud and image registration are used to generate orthophoto image, and then image enhancement method is used to eliminate uneven illumination. Finally, the image edge is blurred by image fusion method, and the digital topology with traditional topology effect is generated. It is proved by experiments that the method of making digital rubbings in this paper is feasible, and that the rubbings made have the advantages of being measurable, which provides more abundant data for the digitized archiving and research of cultural relics.
【作者单位】： 北京建筑大学测绘与城市空间信息学院;北京建筑遗产精细重构与健康监测重点实验室;山东正元数字城市建设有限公司;测绘出版社;
【基金】：国家自然科学基金(41401536);国家自然科学基金(41501495);国家自然科学基金(41601409) 北京市教委科技面上项目(KM201510016007) 北京市委组织部优秀人才项目D类(2013D005017000002)
【分类号】：K854;TP391.41
本文编号：2193796
[Abstract]:The traditional process of making rubbings is complex, such as weather, light, environment and other objective conditions will affect the quality of rubbings, and manual rubbings will cause damage to the body of cultural relics. With the development of information technology, a digital topology using digital image is proposed. Because the general digital image is a central projection and has no measurability, the generated digital topology has no practical application value, and the digital topology based on multiple images still has many problems, such as image projection, registration and so on. In view of the above situation, this paper proposes a solution to generate digital topology using 3D laser point cloud and close-range image: firstly, point cloud and image registration are used to generate orthophoto image, and then image enhancement method is used to eliminate uneven illumination. Finally, the image edge is blurred by image fusion method, and the digital topology with traditional topology effect is generated. It is proved by experiments that the method of making digital rubbings in this paper is feasible, and that the rubbings made have the advantages of being measurable, which provides more abundant data for the digitized archiving and research of cultural relics.
【作者单位】： 北京建筑大学测绘与城市空间信息学院;北京建筑遗产精细重构与健康监测重点实验室;山东正元数字城市建设有限公司;测绘出版社;
【基金】：国家自然科学基金(41401536);国家自然科学基金(41501495);国家自然科学基金(41601409) 北京市教委科技面上项目(KM201510016007) 北京市委组织部优秀人才项目D类(2013D005017000002)
【分类号】：K854;TP391.41
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