在狭缝的夫琅和费衍射中，由振动平行和垂直于缝边的偏振光的衍射条纹得到的缝宽值不同。
In Fraunhofer diffraction of a slit, the slit widths obtained with the fringes produced by polarized light whose vibration is parallel or perpendicular to the slit edge are different.
介绍了在寻找全息干涉条纹与应力强度因子之间关系所作的研究，导出了干涉条纹最大值与应力强度因子之间的定量关系式。
The research works on the relationship between interference fringes and the factor of stress intensity are introduced. The quantitative expression of this relationship has been found and introduced.
针对此情况提出了确定条纹有效区域和选择二值化阈值的方法。
A method to determine valid fringes region and thresholding is put forward.
选择适当的记录条件可以对含有多种空间频率条纹的二值图像获得较好的重构效果。
Retrieved image with good visual effect can be obtained for the digital image containing several space frequencies under proper recording conditions.
将这种方法所测量的结果与实际读取胶片时由分辨率板的图案中黑白条纹灰度值计算出的MTF值进行了比较，验证了这种方法的准确性。
To verify the accuracy of this method, the results are compared with the MTF values obtained by the original method, in which the gray level of the test chart pictures are read and calculated.
此后，将考虑对条纹插值，算出网格点位置的应变或位移的问题。
After this, the problem will be considered of how to interpolate fringes. so as to compute strain or displacements at mesh point locations.
木材纵断面上薄膜组织形成淡薄条纹清晰可见。<比重> 气乾比重值A。
Parenchyma well developed and visible as pale thin stripes on vertical sawn face. weight:A.
采用重心法确定干涉条纹调制度的最大值位置，并以此作为零光程差位置。
The centrobaric method was used to determine the position with the maximum modulation value of fringes and the position was used as the point of zero light path difference.
针对散斑条纹的灰度值具有由两边向中间逐渐增强的特点，提出了一种新的计算机自动处理算法。
Based on the characteristics that the gray values of speckle image are weakening from both sides to the middle gradually, a new algorithm for speckle image processing is proposed.
分析了中央亮条纹的全宽度和半最大值全宽度随波导参数和传输距离的关系。
The relation between the width of central bright fringe together with full width at half maximum of central bright fringe and every waveguide parameter is analyzed.
其中莫尔条纹由CCD采集到计算机中，通过对条纹图像的处理来得到莫尔条纹的精确角度值。
The angle of Moire fringes is obtained by processing on the Moire fringes image, which is captured into computers by CCD camera.
条纹对比度受光源谱分布、成像距离、光源空间相干性这些因素的影响，对参数的研究给出了它们的参考值。
Various parameters insisting of spectrum of source, imaging distance and spatial coherence can influence visibility of fringes. Their referential values were presented in this paper.
对滤波后的条纹图进一步采取二值化、骨架线提取、条纹级数标定、插值一系列操作，得到物体的三维相位信息。
After denoising, a series of operations, binarization, skeleton extraction, fringe order assignation and interpolation, were implemented and the three-dimension phase map was obtained.
二值分割后，采用二步细化算法实现干涉条纹的骨架线提取，并采用条纹跟踪算法对条纹进行修整。
The segmentation, a two-step refinement algorithm interference fringes from the skeleton, and tracking algorithm using stripes on the fringes and carry out rectification.
方法：在实验室搭建实验装置，分别利用矩形光栅法的实验装置和平板法视网膜MTF测量仪器，来测定正视眼组和屈光不正组的不同空间频率条纹分辨的阈值，算出并分析比较所测MTF值。
METHODS: Retina MTF of two groups of people with emmetropia and ametropia were measured by means of a grating and parallel plate respectively. Then the measured MTF were compared and analyzed.
方法：在实验室搭建实验装置，分别利用矩形光栅法的实验装置和平板法视网膜MTF测量仪器，来测定正视眼组和屈光不正组的不同空间频率条纹分辨的阈值，算出并分析比较所测MTF值。
METHODS: Retina MTF of two groups of people with emmetropia and ametropia were measured by means of a grating and parallel plate respectively. Then the measured MTF were compared and analyzed.
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