有限变形激光频谱图像的计算机自动分析

在S－R和分解定理和Fourier光学理论的基础上，提出了一种使用计算机对有限变形激光频谱图像进行自动分析的新方法。文中首先给出了有限应变和平均整旋角与反映频谱图像变化的几何参数之间的定量关系，然后着重介绍了与谱图像分析有关的数字化、分割、特征提取和分析算法等重要的图像处理过程，最后给出圆环受径向荷载大变形实验的分析实例。研究结果表明这一新方法特别适合于测量有限变形。

Computer Automatic Analysis of Laser Spectral Image of Finite Deformation

Based on S R decomposition theorem and Fourier optical theory, a new technique using computer to analysze laser spectral images of finite deformation automatically was put forward. Firstly, a quantitative relation about finite deformation and geometrical parameters which exhibit variation of laser spectral image was introduced. And then, particular emphasis was put on some important computer processing steps related to the analysis of spectral image, such as digitizing, segmentation, feature extraction and analytical algorithms. Lastly, some examples about an experiment of a ring subject to large diametral compression were given. The research result indicates that this new technique is quite suitable for measurment of finite deformation.