Non-contact optical sensing of asphalt mixture deformation using 3D stereo vision
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- 作者：Lu Sun<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup><sup> ; sup><sup>workingworking123@163.com" class="auth_mail" title="E-mail the corresponding authorsup> ; Vahid Abolhasannejad<sup>csup><sup> ; sup><sup>vahid.ahn@gmail.com" class="auth_mail" title="E-mail the corresponding authorsup> ; Lei Gao<sup>csup><sup> ; sup><sup>gleiseu88@gmail.com" class="auth_mail" title="E-mail the corresponding authorsup> ; Yawei Li<sup>dsup><sup> ; sup><sup>seuliyawei@aliyun.com" class="auth_mail" title="E-mail the corresponding authorsup>
- 关键词：Deformation measurement ; Stereovision ; Image processing ; Asphalt mixture
- 刊名：Measurement
- 出版年：2016
- 出版时间：May 2016
- 年：2016
- 卷：85
- 期：Complete
- 页码：100-117
- 全文大小：4934 K
文摘
This paper presents a non-contact three-dimensional optical sensing system for measuring deformation of asphalt mixture concrete in order to determine module of elasticity and Poisson’s ratio. The proposed stereovision method consisting of pre-processing, measurement and post-processing stages, and provides an efficient, cost-effective and accurate measurement of asphalt mixture deformation. Two experiments are conducted to evaluate the proposed method. The results are validated via benchmark measurement using LVDT and simulated result from finite element analysis. The absolute average differences among the measured data using LVDT, finite element analysis and the proposed stereovision method exhibit no significant difference.