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首页> 外文会议>Conference on Interferometry XI: Applications, Jul 10-11, 2002, Seattle, USA >Intensity transfer function of DMD and its application in PMP
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Intensity transfer function of DMD and its application in PMP

机译：DMD的强度传递函数及其在PMP中的应用

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摘要

Phase measuring profilometry using structured illumination with a digital micro-mirror device(DMD) has been extensively studied because of its advantage of the programmable projection. In this paper we discussed the effect of intensity transfer function of the commercial projector with DMD, analyzed the influence of the intensity transfer function and the nonlinear of detector on the quantity of projected sinusoidal fringe and the accuracy of phase measurement, and proposed the correction method for intensity transfer function of DMD. A DMD based phase measuring profilometry system includes a commercial projector with DMD, a CCD camera and a fringe pattern analysis and processing unit. The experiments show that with the correction of the intensity transfer function of the projector the phase measurement accuracy has been improved obviously.
机译：由于其具有可编程投影的优势，因此已经广泛研究了使用带有数字微镜器件（DMD）的结构化照明的相位测量轮廓图。本文讨论了带DMD的商用投影机的强度传递函数的影响，分析了强度传递函数和探测器的非线性对正弦条纹投影量和相位测量精度的影响，并提出了校正方法用于DMD的强度传递函数。基于DMD的相位测量轮廓仪系统包括带有DMD的商用投影仪，CCD相机以及条纹图案分析和处理单元。实验表明，通过对投影机强度传递函数的校正，相位测量精度得到了明显提高。

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