Real-time Display System for Contour Lines and Equal-displacement Lines by Scanning Moire Method Using Phase-shifting

相移扫描莫尔法轮廓线和等位移线实时显示系统

• 批准号: 09555033
• 负责人: MORIMOTO Yoshiharu
• 金额: $ 8.83万
• 依托单位: Wakayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555033/
• 关键词: real-time; phase-shifting; scanning moire; strain; displacement; shape; contour line; equal-displacementline; モアレ

Phase analysis of grid patterns obtained by grid projection methods is used to measure accurate shapes for 3-D objects, and also phase analysis of fringes obtained by interferometer is used to measure accurate flatness of plates. The accuracy of the phase analysis methods is 1110-1/1000 of a grid pitch or a wavelength of light.To analyze phase distributions of grids and fringe patterns, we proposed the Fourier transform method, the Gabol transform method and the wavelet transform method previously. We applied these methods to analysis of shapes and fringe patterns. However, phase analysis usually consumes much time. In this study, we propose four methods to measure shapes of 3-D objects or flatness of plates in real-time. The first is a phase-shifting scanning moire method. The second is a phase difference scanning moire method. The third is a phase-shifting method using the correlation of the rectangular brightness of a projected grid and two rectangular functions. The last is the integrated phase shifting method. These methods can provide accurate phase distributions in real-time.The principle and application applied to shape, strain and stress analysis are shown.

利用网格投影法得到的网格图样的相位分析来测量三维物体的精确形状，利用干涉仪得到的条纹的相位分析来测量板的精确平面度。相位分析方法的精度为栅格间距或光波长的1110-1/1000。为了分析网格和条纹的相位分布，我们提出了傅里叶变换方法、Gabol变换方法和小波变换方法。我们将这些方法应用于形状和条纹图案的分析。然而，相位分析通常耗费大量的时间。在这项研究中，我们提出了四种方法来实时测量三维物体的形状或板的平面度。第一种是相移扫描云纹法。第二种是相位差扫描云纹法。第三种是利用投影网格的矩形亮度与两个矩形函数的相关性进行相移的方法。最后一种是积分相移法。这些方法可以实时提供准确的相位分布。介绍了形状、应变和应力分析的原理和应用。

项目成果

Y.Morimoto, M.Fujigaki: "Digital tmage Processing by Shifing Method Using Fourier Transform" International Union of Theoretical and Applied Mechanics. (1998)

Y.Morimoto、M.Fujigaki：“使用傅里叶变换的移动方法进行数字图像处理”国际理论与应用力学联盟。

M.Fujigaki, Y.Morimoto: "Phase Analysis of Teeth Bed by Phase Shifting Method Correlation" Applied Mechanics in the Americas. Vol.b. 113-116 (1999)

M.Fujigaki、Y.Morimoto：“通过相移方法相关进行齿床的相分析”美洲应用力学。

金汪根, 藤垣元治, 森本吉春: "位相シフト走査モアレ法によるノイズのない等高線・等変位線表示システムの開発" 精密工学会 第2回知能メカトロニクスワークショップ講演論文集. 29-34 (1997)

Kim Wang、Motoharu Fujigaki、Yoshiharu Morimoto：“利用相移扫描莫尔法开发无噪声轮廓线/等位移线显示系统”日本精密工程学会第二届智能机电一体化研讨会论文集。 (1997)

M.Fujigaki, W.G.Kim, Y.Morimoto: "Shapa Measurment by Phase Shifting Scanning Moire Method" Proceedings of Interantional Conterendce on Advanced Technology in Experimental Mechanics, JSME. 161-164 (1997)

M.Fujigaki、W.G.Kim、Y.Morimoto：“相移扫描莫尔法的 Shapa 测量”实验力学先进技术国际竞赛论文集，JSME。

M.Fujigaki, K.Haramaki, Y.Morimoto: "Human Body Shape Measurement by Scanning Moire Method Using Phase-shifting with correlation" The 3rd Intelligent Mechatronics Workshop. 29-34 (1998)

M.Fujigaki、K.Haramaki、Y.Morimoto：“使用相关相移的扫描莫尔法进行人体形状测量”第三届智能机电一体化研讨会。