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首页> 外文会议>SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida >Image Enhancement in Digital Reflection Photoelasticity Using a Butterworth Filter
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Image Enhancement in Digital Reflection Photoelasticity Using a Butterworth Filter

机译：使用Butterworth滤波器进行数字反射光弹性中的图像增强

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摘要

Images obtained from the automated reflection polariscope, PSIOS (Phase Stepped Images Observed Simultaneously) based on principles of phase stepping contain noise. Experiments were carried out to find the major sources of noise in the use of the system. It is found that noise is caused mainly by the photoelastic coating and the electronic instrumentation; the majority of noise is in the high frequency domain. Several smoothing methods for full-field automated photoelasticity were reviewed. The zero phase, third order, low pass Butterworth filter was found to be the best to eliminate noise in the intensity data in images for a real component in dynamic loading conditions.
机译：根据相位步进原理从自动反射偏振镜PSIOS（同时观察到的相位步进图像）中获得的图像包含噪声。进行了实验以找到使用该系统的主要噪声源。发现噪声主要是由光弹性涂层和电子仪器引起的。大部分噪声在高频域内。综述了几种用于全场自动光弹性的平滑方法。发现零相，三阶，低通巴特沃斯滤波器是消除动态加载条件下真实分量图像中强度数据中噪声的最佳方法。

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