| 正弦脉冲宽度调制条纹结合相位编码条纹的三维测量方法 |
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| 引用本文： | 李彪,吴海涛,张建成,伏燕军.正弦脉冲宽度调制条纹结合相位编码条纹的三维测量方法[J].红外与激光工程,2016,45(6):617006-0617006(6). |
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| 作者姓名： | 李彪 吴海涛 张建成 伏燕军 |
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| 作者单位： | 1.南昌航空大学 无损检测教育部重点实验室,江西 南昌 330063 |
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| 基金项目： | 国家自然科学基金(51365045,61462063);航空科学基金(2013ZE56013) |
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| 摘 要： | 提出了正弦脉宽调制和相位编码结合的一种三维形貌测量方法。这种方法离焦投影编码的两种条纹到被测对象上,使用相移算法,由正弦脉冲宽度调制条纹得到截断相位,由相位编码条纹解码得到条纹级次,从而恢复测量对象的三维形貌。实验结果证明了该方法有两个优点:(1)轻度离焦滤除了谐波从而能降低测量误差;(2)基于相位的编码方式能测量表面反射率不一物体。
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| 关 键 词： | 三维测量 离焦 正弦脉冲宽度调制条纹 相位编码条纹 |
| 收稿时间： | 2015-10-05 |
3D shape measurement method combining sinusoidal pulse width modulation fringe with phase coding fringe |
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| Institution: | 1.Key Laboratory of Nondestructive Testing (Ministry of Education),Nanchang Hangkong University,Nanchang 330063,China |
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| Abstract: | A 3D shape measurement method combining sinusoidal pulse width modulation fringe with phase coding fringe was proposed. Two kinds of coding fringes were projected onto the object with defocus. Using a phase-shift algorithm, the wrapped phase was obtained by the sinusoidal pulse width modulation fringe, the fringe order was got by the phase coding fringe. Then, the three-dimensional shape of the measurement object can be restored. The experimental results demonstrate that the proposed method has two merits:(1) It can decrease the measurement error because of filtering the harmonics with slight defocus;(2) It can measure the different contrast object because it is based on phase code. |
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