Title :
Plane-curve-based matching for broken bronze mirror reassembling
Author :
Wuyang Shui ; Mingquan Zhou ; Liyang Zhang ; Yingjie Wang
Author_Institution :
Coll. of Inf. Sci. & Technol., Beijing Normal Univ., Beijing, China
Abstract :
Bronze mirror is one of the most famous bronze artifacts in ancient China, some of which have been broken into several small fractures after excavation. Recently, computer scientists collaborating with archeologists focused on fractures matching automatically according to geometry curve. In this paper, a novel method is proposed for several fractures automatic reassembling to improve the speed and accuracy. Firstly, the one-shot image is utilized to collect image data for broken bronze mirror by digital camera. Secondly, watershed algorithm is used to segment and mark each fracture. Thirdly, the longest common curve is found by combining corners detection, coarse matching and fine matching, taking length, angle and curvature into account. The curvature consistency is used to omit the outlier mirror external curve to guarantee matching correctly by circle-shaped structure. Finally, the least square method is performed to compute rigid transformation to reassemble neighbor fractures by matching increment. Experimental results on broken bronze mirror demonstrate the correctness and robustness of our method.
Keywords :
image matching; image segmentation; China; broken bronze mirror reassembling; circle-shaped structure; coarse matching; corners detection; curvature consistency; digital camera; fine matching; geometry curve; image segmentation; least square method; neighbor fractures; one-shot image; plane-curve-based matching; watershed algorithm; Educational institutions; Image restoration; Image segmentation; Merging; Mirrors; Shape; Surface cracks; Bronze mirror; Curve matching; Fracture segmentation; Reassembling; Rigid transformation;
Conference_Titel :
Image and Signal Processing (CISP), 2013 6th International Congress on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4799-2763-0
DOI :
10.1109/CISP.2013.6745308