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首页> 外文会议>International Symposium on Photoelectronic Detection and Imaging >The fast and accurate 3D-face scanning technology based on laser triangle sensors
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The fast and accurate 3D-face scanning technology based on laser triangle sensors

机译：基于激光三角形传感器的快速准确的3D面扫描技术

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摘要

A laser triangle scanning method and the structure of 3D-face measurement system were introduced. In presented system, a liner laser source was selected as an optical indicated signal in order to scanning a line one times. The CCD image sensor was used to capture image of the laser line modulated by human face. The system parameters were obtained by system calibrated calculated. The lens parameters of image part of were calibrated with machine visual image method and the triangle structure parameters were calibrated with fine wire paralleled arranged. The CCD image part and line laser indicator were set with a linear motor carry which can achieve the line laser scanning form top of the head to neck. For the nose is ledge part and the eyes are sunk part, one CCD image sensor can not obtain the completed image of laser line. In this system, two CCD image sensors were set symmetric at two sides of the laser indicator. In fact, this structure includes two laser triangle measure units. Another novel design is there laser indicators were arranged in order to reduce the scanning time for it is difficult for human to keep static for longer time. The 3D data were calculated after scanning. And further data processing include 3D coordinate refine, mesh calculate and surface show. Experiments show that this system has simply structure, high scanning speed and accurate. The scanning range covers the whole head of adult, the typical resolution is 0.5mm.
机译：引入了激光三角扫描方法和3D面测量系统的结构。在呈现的系统中，选择衬里激光源作为光学指示的信号，以便扫描一行。 CCD图像传感器用于捕获由人脸调制的激光线的图像。系统参数是通过计算的系统获得的。用机器视觉图像方法校准图像部分的镜片参数，并用细线平行布置校准三角形结构参数。 CCD图像部件和线激光指示器采用线性电机携带设定，可以实现头部顶部的线激光扫描形状。对于鼻子是壁架部分，眼睛是沉没的部分，一个CCD图像传感器无法获得完整的激光线图像。在该系统中，两个CCD图像传感器在激光指示器的两侧设置对称。实际上，这种结构包括两个激光三角测量单元。另一种新颖的设计是有激光指示器被安排，以减少扫描时间，难以让人类保持静止的时间。扫描后计算3D数据。进一步的数据处理包括3D坐标细化，网格计算和表面展示。实验表明，该系统简单地结构，扫描速度高，准确。扫描范围覆盖整个成人头部，典型分辨率为0.5mm。

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