...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optics and Lasers in Engineering >A DIC-assisted fringe projection profilometry for high-speed 3D shape, displacement and deformation measurement of textured surfaces
【24h】

A DIC-assisted fringe projection profilometry for high-speed 3D shape, displacement and deformation measurement of textured surfaces

机译：具有纹理表面的高速3D形状，位移和变形测量的DIC辅助条纹投影轮廓测量

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

High-speed three-dimensional (3D) shape measurement techniques based on fringe projection profilometry (FPP) have undergone huge advances over the past two decades. However, accurate 3D displacement mapping and deformation analysis of dynamic scenes using FPP remains an unsolved problem. Because fringe patterns are projected rather than attached on the tested surfaces, the full-field point-to-point correspondence cannot be accurately established between any two 3D shape results. To deal with this challenge, a DIC-assisted FPP for high-speed 3D shape, displacement and deformation measurement of textured surfaces is proposed. Firstly, a high-speed 3D shape measurement system is adopted using our recently proposed robust and efficient Gray-coded coding strategy, which can accurately reconstruct full-field shape of discontinuous surfaces with rich texture information. Then, the modulation-based method is proposed to retrieve high-quality texture map from three phase-shifting fringe patterns, which can eliminate the adverse influence of the nonuniform and time-varying ambient light. By matching the retrieved surface texture images at difference states using DIC, accurate point tracking between the measured 3D shape data can be fulfilled, leading to precise 3D displacement and deformation measurement. Experiments have verified that the proposed method can achieve 3D shape, displacement and deformation measurement of dynamic scenes at a frame rate of 542 fps without any extra expense of hardware or calibration for the FPP system. The presented method is reliable and promising for further 3D displacement mapping and deformation analysis of dynamic scenes using FPP.
机译：基于边缘投影轮廓测量（FPP）的高速三维（3D）形状测量技术在过去二十年中经历了巨大的进步。但是，使用FPP的动态场景的准确3D位移映射和变形分析仍然是一个未解决的问题。因为投影边缘图案而不是附在测试表面上，所以不能在任何两个3D形状结果之间准确地建立全场点对点对应。为了处理这一挑战，提出了一种用于高速3D形状，纹理表面的位移和变形测量的DIC辅助FPP。首先，使用我们最近提出的强大和高效的灰色编码编码策略采用高速3D形状测量系统，可以准确地重建具有丰富纹理信息的不连续表面的全场形状。然后，提出了基于调制的方法来从三个相移条纹图案中检索高质量的纹理图，这可以消除非均匀和时变环境光的不利影响。通过使用DIC匹配在差异状态下的检索的表面纹理图像，可以实现测量的3D形状数据之间的准确点跟踪，从而导致精确的3D位移和变形测量。实验已经验证了所提出的方法可以以542 FPS的帧速率实现3D形状，位移和变形测量，而无需任何额外的硬件或FPP系统校准的额外费用。呈现的方法是可靠的，并且有希望用于使用FPP的动态场景的进一步3D位移映射和变形分析。

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