• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Computer vision and image understanding >Surround structured lighting: 3-D scanning with orthographic illumination
【24h】

Surround structured lighting: 3-D scanning with orthographic illumination

机译：周围结构照明：具有正交照明的3D扫描

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents a new system for rapidly acquiring complete 3-D surface models using a single orthographic structured light projector, a pair of planar mirrors, and one or more synchronized cameras. Using the mirrors, we project structured light patterns that illuminate the object from all sides (not just the side of the projector) and are able to observe the object from several vantage points simultaneously. This system requires that projected planes of light to be parallel, so we construct an orthographic projector using a Fresnel lens and a commercial DLP projector. A single Gray code sequence is used to encode a set of vertically-spaced light planes within the scanning volume, and five views of the illuminated object are obtained from a single image of the planar mirrors located behind it. From each real and virtual camera we recover a dense 3-D point cloud spanning the entire object surface using traditional structured light algorithms. A key benefit of this design is to ensure that each point on the object surface can be assigned an unambiguous Gray code sequence, despite the possibility of being illuminated from multiple directions. In addition to presenting a prototype implementation, we also develop a complete set of mechanical alignment and calibration procedures for utilizing orthographic projectors in computer vision applications. As we demonstrate, the proposed system overcomes a major hurdle to achieving full 360° reconstructions using a single structured light sequence by eliminating the need for merging multiple scans or multiplexing several projectors.
机译：本文介绍了一种新系统，该系统可使用单个正交结构的投光器，一对平面镜和一个或多个同步摄像机快速获取完整的3D表面模型。使用反射镜，我们可以投射出结构化的光图案，该图案可以从各个侧面（不仅仅是投影仪的侧面）照亮物体，并且可以同时从多个有利位置观察物体。该系统要求投影的光平面必须平行，因此我们使用菲涅耳透镜和商用DLP投影仪来构造正交投影仪。单个格雷码序列用于对扫描体积内的一组垂直间隔的光平面进行编码，并且从位于其后的平面镜的单个图像获得照明对象的五个视图。通过使用传统的结构化光算法，我们从每台真实和虚拟相机中恢复出覆盖整个对象表面的密集3D点云。这种设计的主要好处是，尽管可以从多个方向进行照明，但仍可以确保为对象表面上的每个点分配明确的格雷码序列。除了提供原型实现​​之外，我们还开发了一套完整的机械对准和校准程序，用于在计算机视觉应用中使用正交投影仪。正如我们所展示的，通过消除合并多个扫描或多台投影仪的需求，所提出的系统克服了使用单一结构光序列实现完整360°重建的主要障碍。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号