Three dimensional measurement of objects in liquid and estimation of refractive index of liquid by using images of water surface with a stereo vision system
Three dimensional measurement of objects in liquid and estimation of refractive index of liquid by using images of water surface with a stereo vision system
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DOI：
10.1109/robot.2008.4543331
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
A. Yamashita;Akira Fujii;T. Kaneko
中科院分区：
文献类型：
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作者：
A. Yamashita;Akira Fujii;T. Kaneko
在本文中，我们提出了一种利用立体视觉系统对未知液体中的物体进行三维（3-D）测量的新方法。当应用视觉传感器测量液体中的物体时，光折射是一个重要问题。因此，我们利用水面图像来估计未知液体的折射率，恢复不受光折射影响的图像，并在考虑折射影响的情况下测量液体中物体的3D形状。通过实验证明了该方法的有效性。
In this paper, we propose a new three-dimensional (3-D) measurement method of objects in unknown liquid with a stereo vision system. When applying vision sensors to measuring objects in liquid, light refraction is an important problem. Therefore, we estimate refractive indices of unknown liquids by using images of water surface, restore images that are free from refractive effects of the light, and measure 3-D shapes of objects in liquids in consideration of refractive effects. The effectiveness of the proposed method is shown through experiments.