基于序列轮廓线的凸面目标全自动重构方法

周朗明; 张小虎; 关棒磊

doi:10.16383/j.aas.2015.c140369

基于序列轮廓线的凸面目标全自动重构方法

doi: 10.16383/j.aas.2015.c140369

周朗明^1,2, ,,
张小虎^1,2,
关棒磊^1,2

1.
国防科学技术大学航天科学与工程学院长沙 410073;
2.
湖南省图像测量与视觉导航重点实验室长沙 410073

基金项目:

国家自然科学基金(11272347),国家重大科学仪器设备开发专项(2013YQ140517)资助

详细信息

作者简介:
张小虎国防科学技术大学航天科学与工程学院研究员.主要研究方向为摄像测量与计算机视觉.E-mail:zxh1302@hotmail.com

通讯作者:
周朗明国防科学技术大学航天科学与工程学院博士后.主要研究方向为数字摄影测量与计算机视觉.本文通信作者.E-mail:zlm_mj@126.com

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出版历程
- 收稿日期: 2014-06-03
- 修回日期: 2014-11-15
- 刊出日期: 2015-04-20

An Automatic Reconstruction Method of Convex Object Based on Sequence Contours

1.
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073;
2.
Hunan Provincial Key Laboratory of Image Measurement and Vision Navigation, Changsha 410073

Funds:

Supported by National Natural Science Foundation of China(11272347), and National Key Scientific Instrument and Equipment Development Project(2013YQ140517)

摘要

摘要: 凸面目标在成像时会表现尺寸较小、纹理稀疏或缺乏、透光、反光等特点.在对其进行三维重构时,传统的立体视觉匹配、主动视觉扫描(激光或结构光)等重构方法无法提供良好的解决方案.针对此类目标的重构难题,本文提出一种基于序列轮廓线的全自动重构方法.该方法首先采集目标的序列轮廓影像,然后提取高精度的轮廓线,再利用多个视角的轮廓线对初始外包体进行空间切割得到目标的初始三维模型,接着根据角度和面积约束对初始三维模型中的面进行合并,最后利用合并后的面重新对外包体进行精细切割得到目标的精确三维刻面模型.通过对凸面目标(注射器针头,直径约为3mm)的重构实验证明,利用本文的方法重构得到的模型角度误差小于0.7,执行时间小于15s,重构过程无需人工干预,能有效解决凸面目标的三维重构及视觉测量难题.
- 计算机视觉 /
- 序列轮廓线 /
- 空间切割 /
- 凸面目标 /
- 轮廓重构 /
- 视觉测量
Abstract: There is a small size, lack of or less texture, transparent and reflective phenomenon on the images of convex objects. So the traditional reconstruction methods such as stereo-vision matching and active vision scanning such as laser or structure light cannot be used for such objects. In this paper, a reconstruction method based on multi-contours for miniature convex object is proposed. Firstly, multi-view silhouette images are captured, then the accurate contours are extracted; secondly coarse mesh is generated by space carving of multi-contours, and thirdly, the fragmented polygons are merged according to angle and area constriants; at last, the accurate mesh is generated by space carving of multi-polygons of the coarse mesh. The reconstruction experiments of regular and convex objects(syringe needle, diameter is about 3mm) proved that the angular error is less than 0.7 and the time cost is less than 15 seconds and the total process is without manual intervention. This method can solve the problem of reconstruction and vision measurement of convex objects effectively.
- Computer vision /
- sequence contours /
- space carving /
- convex object /
- SFS /
- vision measurement

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