A new fringe-pattern preprocessing based on median spin filter is proposed to deal with the interferogram with high-level noise.
提出了一种基于旋滤波法的干涉条纹预处理方法,并将其应用到载波傅里叶分析法中。
By combining with dynamic isochromate pattern, the elastic modulus, Poisson's ratio and dynamic material fringe value of the material measured can be obtained by the method.
如果和动光弹等色线结合,可以同时获得被测材料的弹性模量、泊松比、材料条纹值参数。
Traditional speckle fringe patterns by electronic speckle pattern interferometry (ESPI) are inherently noisy and of limited visibility, so denoising is the key problem in ESPI.
原始的电子散斑干涉条纹图中含有很强的颗粒性噪声,对比度很差,因此去除噪声是电子散斑干涉测量技术的关键问题。
The fringe pattern generated by our method is of high contrast and has better quality than subtraction fringe. The new method is simple and does not require more computational effort.
由我们方法获得的条纹图比减条纹有更高的对比度和更好的质量,新方法是简单的,不需要复杂的计算。
This method has the characteristics that in addition to the sensing interferometer, a second processing interferometer is necessary to extract the required fringe pattern information.
该技术的特点是除了使用传感干涉仪以外,还必须用第二个处理干涉仪来提取所需的条纹图样信息。
Changing the phase of digital grating can realize Moire fringe scanning. The global center of beam pattern can be calculated by multi_frame scanning images.
改变该数字光栅的相位,可实现莫尔条纹扫描,用多幅扫描图像可算出光斑图像整体中心。
With the suburban urbanization course in the extra-megapolis fringe in China, a new pattern for the regulation of administrative division have been adopted, that is, turn County into District.
随着我国特大城市郊区城市化的不断推进,在特大城市边缘地区出现了“撤县改区”这种行政区划调整模式。
Dynamic fringe pattern can be observed throughout the testing by real-time holographic interferometry, while the traditional method is only suitable for static fringe pattern in phase extracting.
实时全息干涉法可以观察记录整个测试过程中条纹图的动态变化,传统相位提取算法只适合于静态干涉条纹图相位的提取。
A fringe gray level method can be used to automate the data collection, analysis and display of isochromatic-fringe pattern in photoelasticity.
条纹灰度法在光弹性中能自动采集数据、分析和显示等色线条纹图。
In this paper, a simple method for estimating fringe orientation is presented, and a method of picking up the fringe skeletons of speckle pattern from fringe orientation is discussed.
本文提出了一种计算条纹方向的简单算法,以及通过条纹方向图提取散斑条纹中心线的方法。
The phase unwrapping process of fringe pattern can be achieved without any priori information or manual intervention.
该方法更充分利用条纹图像信息,算法稳健,可以实现完全自动的二维位相展开。
The light reflected from these surfaces recombines and a fringe interference pattern is formed.
从样品表面反射的光线通过再结合,就产生了干涉图案。
Phase unwrapping algorithm based on the fringe frequency analysis is applied to the interference pattern simulation model. We obtain the good result.
将条纹频率分析的相位展开方法应用于我们给出的干涉图模型,得到了很好的相位展开结果。
The technique is based on digital demodulation of generalised non-linear carrier fringe pattern.
该技术基于广义非线性载波条纹的数字解调。
The study of static deformation, thermally induced distortion, dynamic response of natural frequency and modal pattern has been performed by using frozen fringe, realtime and time-average holography.
介绍了用冻结条纹法、实时全息法和时间平均法对静变形、热变形、固有频率和振型进行研究。
We test the new method on the computer-simulated fringe pattern and experimentally obtain the fringe pattern, and evaluate its filtering performance.
分别对计算机模拟的和实验获得的条纹图进行了测试,并对滤波方法的性能进行了评价。
The noise of the blasting fringe pattern is reduced and quality is increased after processing by gradation modification, filtering and smoothness.
爆炸条纹图经灰度修正、滤波、平滑后,噪声有所减少,图像质量增强。
A high quality of whole field speckle fringe pattern can be obtained and the point-by-point filtering method can also be used to analyse the deformation more accurately.
应用该技术可获得优质的全场散斑条纹图,并可用逐点滤波法进行精确定量分析。
ATOS flowing optical scanner with the fringe pattern theory is a kind of advanced and non-contacted of equipment in reverse engineering.
Atos流动式光学扫描仪基于光栅原理,是逆向工程领域中一种先进的非接触式光学扫描设备。
When Fourier transform is used to demodulate the modulated fringe pattern, the phase of deformation is calculated and furthermore the deformation is measured accurately.
利用傅里叶变换法,解调出了变形场的相位,从而实现了物体变形场的精确测量。
When Fourier transform is used to demodulate the modulated fringe pattern, the phase of deformation is calculated and furthermore the deformation is measured accurately.
利用傅里叶变换法,解调出了变形场的相位,从而实现了物体变形场的精确测量。
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