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The application of direct integral-geometric methods for the interferometric images analysis

机译:直接积分法在干涉图像分析中的应用

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Here we present our approach to apply the direct Radon transform for the analysis of interferometric images, in particular for the laser speckle velocymetry, and for the ESPI measurements. A technique for the precise velocity measurement is based on the precise calculation of the common movement of a laser speckle field. This approach allows realising a velocimeter suitable for use in extreme conditions. The latest results of our investigations are presented in this report. We also present the method of image analysis for the automatic set up of an Electronic Speckle Pattern Interferometry (ESPI). The idea of our method is to make a direct Radon-like transformation for each pixel (x_0, y_0) a 2D field of an image brightness B(x,y):, and than we calculate the rms spatial deviation by s, the maximum of which determines two value: (ⅰ) immediate max_φ(σ_s), and (ⅱ) the corresponded angle φ((σ_s)_(max)). So, from 2D function B(x,y) we have two functions depended from same 2D field, but gives a clear defect location. Our investigations show a perspective of our approach. The submitted results have both methodological and applied significance for the pattern analysis.
机译:在这里,我们介绍将直接Radon变换应用于干涉图像的分析的方法,特别是用于激光散斑速度测量和ESPI测量的方法。精确速度测量的技术基于对激光散斑场共同运动的精确计算。这种方法允许实现适用于极端条件的测速仪。本报告提供了我们调查的最新结果。我们还介绍了自动建立电子散斑干涉图(ESPI)的图像分析方法。我们方法的想法是对图像亮度B(x,y)的2D场对每个像素(x_0,y_0)进行直接的类似于Radon的变换,然后我们用s计算均方根空间偏差,即最大其中的两个值确定:(ⅰ)立即数max_φ(σ_s),以及(ⅱ)对应角度φ((σ_s)_(max))。因此,根据2D函数B(x,y),我们有两个函数依赖于相同的2D字段,但是给出了清晰的缺陷位置。我们的调查显示了我们方法的观点。提交的结果对于模式分析具有方法学和应用意义。

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