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本文提出一种测量三维形貌的扫描系统,该系统可被用于测量回转体的三维形貌。激光光刀被投射在被测物体表面,由于被测物体表面的形貌而改变了光刀的弯曲方式,摄像机将变形后的图像采集到计算机中。当被测物体放置在转台上旋转一周时,相应的一系列光刀变形的图片被采集到计算机中,这一系列图片包含了物体表面形貌的全部信息。通过连续扫描采集系列图片并计算,最终可以获得整个被测物体的三维形貌。当被测物体直径在一百毫米左右尺寸范围内的测量灵敏度可到0.01mm,其它尺寸范围要更换成像系统,才能达到相应的灵敏度。本文给出了两个较为复杂模型的三维形貌测量结果。该结果表明,本系统在对回转体表面形貌的测量方面具有一定的技术难度和广泛的工程需求,本文的研究具有重要的参考价值。
This paper presents a scanning system for measuring three-dimensional topography that can be used to measure the three-dimensional topography of a rotating body. The laser knife is projected on the surface of the object to be measured. Because of the shape of the surface of the object to be measured, the bending mode of the knife is changed. The camera takes the deformed image to a computer. When the measured object is placed on the turntable for a week, a series of photo-warping images are collected on the computer. This series of images contain all the information about the topography of the object. Through continuous scanning acquisition of a series of pictures and calculations, the final three-dimensional shape of the entire measured object can be obtained. When the measured diameter of about 100 millimeters in size range of measurement sensitivity can be 0.01mm, other size range to replace the imaging system, in order to achieve the appropriate sensitivity. This paper gives the results of three-dimensional topography of two more complex models. The results show that the system has some technical difficulties and extensive engineering requirements in the measurement of surface morphology of revolving body. The research in this paper has important reference value.