基于数码相机莫尔效应的位移测量

基金项目: 国家自然科学基金委员会创新研究群体科学基金资助项目(40721001)

详细信息

Displacement Measurement Based on Moiré Effect of Digital Camera

¹School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;²College of Architectural Engineering,Xinjiang University,201 Aletai Road,Urumqi 830008,China

Funds: 国家自然科学基金委员会创新研究群体科学基金资助项目(40721001)

摘要: 数码相机在拍摄与像素宽度相近的条纹时,像片上会出现莫尔条纹。针对数码相机莫尔效应的特点,选择了平行莫尔条纹,利用平行莫尔条纹的位移放大作用,可精确推算被摄条纹的微小移动。实验数据表明,100 m的摄影物距仍然有很高的测量精度。
- 莫尔条纹 /
- 数码相机 /
- 相位差 /
- 位移测量
Abstract: Moiré fringe appears in photos when the stripes with the width similar to the pixel of digital cameras are shot.Considering Moiré effect of digital camera,we select parallel Moiré fringe.With the displacement amplification of parallel Moiré fringes,tiny movement of stripes can be calculated precisely.We expounded its calculating methods in this paper.Experimental results show that a high precision can be guaranteed within 100 m.
- Moiré fringe /
- digital camera /
- phase difference /
- replacement measurement