A Comparison of Image Processing Techniques for Optical Interference Fringe Analysis

• 作者: Aasma ASLAM Babar HUSSAIN Ghazanfar HUSSAIN Masroor IKRAM Muhammad FAROOQ
• 来源期刊: 光子传感器:英文版
• 学科: 物理学
• 关键词: 图像处理技术 干涉条纹 光学 倾斜测量 条纹分析 近似方法 位移分析 位移测量
• 年，卷（期）: 2015,（4）
• 页码范围: 304-311
• 页数: 8页
• 分类号: O436.1
• 语种: 中文

摘要

We present a comparison of different techniques for the analysis of the shift and tilt in optical interference fringes. Fringe center, Radon transform, and Gaussian approximation methods are used for fringe analysis. We have measured the tilt and shift between two relevant fringe pattems. The error in tilt measurement was about 2%, and the displacement of the order of few nanometers was measured by the fringe shift analysis. The comparison between the techniques is analyzed with respect to percentage error.