| 基于傅里叶变换的投影条纹非正弦性的研究 |
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| 引用本文： | 姬保卫,马云秀,边心田.基于傅里叶变换的投影条纹非正弦性的研究[J].四川激光,2014(3):33-34. |
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| 作者姓名： | 姬保卫 马云秀 边心田 |
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| 作者单位： | 淮阴师范学院物理与电子电气工程学院,江苏淮安223300 |
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| 基金项目： | 基金项目：江苏省高等学校大学生实践创新训练计划项目（基金编号201310323056X）.淮安市科技支撑计划（NO.HAG2012044）资助. |
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| 摘 要： | 采用逆推法,计算出基于发散光路的三维测量中参考面上为标准的正弦性光场时的投影光栅函数,再将计算出的投影光栅,用投影仪投影到参考面上,从而获得了标准的正弦性光场,并利用傅里叶变换方法进行三维测量。实验研究表明,此方法可以有效地抑制变形条纹的频谱混叠,准确的提取其基频信息,从而提高三维测量的精度。仿真与实验均验证了提出方法的可行性与有效性。
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| 关 键 词： | 三维测量 傅里叶变换 条纹周期性 光栅函数 测量精度 |
Aperiodic Fringe Projection Based on Fourier Transform |
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| JI Bao-wei,MA Yun-xiu,BIAN Xin-tian.Aperiodic Fringe Projection Based on Fourier Transform[J].Laser Journal,2014(3):33-34. |
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| Authors: | JI Bao-wei MA Yun-xiu BIAN Xin-tian |
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| Affiliation: | (School of Physics and Electronic Electrical Engineering , Huaiyin Normal University, HuaianJianshu223300, China) |
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| Abstract: | A method to construct grating projection function by inverse method is given in this paper. When a sinusoidal grating is projected on a diffuse object to be measured, the grating’s phase deformation caused by the surface shape is extracted by the Fou-rier transform method. Experiment shows that the proposed method can effectively inhibit spectrum aliasing of deformation stripes, and accurately extract the fundamental frequency information, so as to improve the accuracy of three-dimensional measurement. Simu-lation and experimental results show the feasibility and effectiveness of this method. |
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| Keywords: | Three-dimensional Measurement Fourier Transform Periodic Stripes Grating Function Measurement Accuracy |
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