Real-Time and High-Resolution 3D Face Measurement via a Smart Active Optical Sensor.
Real-Time and High-Resolution 3D Face Measurement via a Smart Active Optical Sensor.
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DOI：
10.3390/s17040734
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发表时间：
2017-03-31
期刊：
影响因子：
--
通讯作者：
Xing X
中科院分区：
文献类型：
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作者：
You Y;Shen Y;Zhang G;Xing X
在传统的主动光学传感中，如傅里叶变换轮廓术，三维测量范围和精度受到捕获图案的零频率的影响。移相技术通常用于去除零分量。然而，这种相移方法必须捕获多个具有相位差的条纹图，从而影响实时性。本研究介绍一种利用复合图案之智慧型主动式光学感测器。复合图案有效地结合了几个相移条纹和载波频率。该方法只需使用一个方向图就可以消除零频。通过模型人脸重建和人脸测量验证了该方法的有效性和可行性。结果表明，与传统的相移方法相比，新方法的精度没有明显下降。利用纹理映射技术重建了具有自然外观的三维数字人脸。
The 3D measuring range and accuracy in traditional active optical sensing, such as Fourier transform profilometry, are influenced by the zero frequency of the captured patterns. The phase-shifting technique is commonly applied to remove the zero component. However, this phase-shifting method must capture several fringe patterns with phase difference, thereby influencing the real-time performance. This study introduces a smart active optical sensor, in which a composite pattern is utilized. The composite pattern efficiently combines several phase-shifting fringes and carrier frequencies. The method can remove zero frequency by using only one pattern. Model face reconstruction and human face measurement were employed to study the validity and feasibility of this method. Results show no distinct decrease in the precision of the novel method unlike the traditional phase-shifting method. The texture mapping technique was utilized to reconstruct a nature-appearance 3D digital face.