Image continuity at different levels of zoom for fringe patterns.
Image continuity at different levels of zoom for fringe patterns.
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DOI：
10.1364/oe.20.000007
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发表时间：
2012-01
期刊：
影响因子：
3.8
通讯作者：
M. Abolbashari;A. S. Gerges;A. Davies;F. Farahi
中科院分区：
文献类型：
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作者：
M. Abolbashari;A. S. Gerges;A. Davies;F. Farahi
条纹图案是来自许多测量系统的原始输出数据，包括激光干涉仪和莫尔系统。对于具有一系列缩放级别的仪器以不同尺度测量对象，需要一种技术（算法）来联合收割机和/或比较数据以获得不同细节级别的信息。一种技术，以保持连续性的输出图像在不同级别的缩放和同一级别的缩放内的开发和演示。图像配准用于关联图像，找到相对缩放值，并获得侧平面中图像之间的移位。条纹图案从莫尔系统和激光干涉仪被用作图像拼接和演示的技术。干涉条纹被用来找到所需的参数，以相互关联的位置和规模的条纹图案在不同级别的变焦。计算的参数是两个方向上的缩放和平移;这些参数使得可以定位测量系统放大的区域的坐标，该坐标与具有较低放大率的区域以及相同缩放级别内的图像的相对位置相关。结果表明，该技术能够找到一个像素的分辨率范围内的尺度和移位参数，因此可以恢复在不同级别的缩放图像之间的连续性。
Fringe patterns are raw output data from many measurement systems including laser interferometers and moiré systems. For instruments with a range of zoom levels to measure the object at different scales, a technique (algorithm) is needed to combine and/or compare data to obtain information at different levels of details. A technique to keep the continuity of output images both at different levels of zoom and within the same level of zoom is developed and demonstrated. Image registration is used to correlate images, find relative zoom values, and obtain shift between images in the lateral plane. Fringe patterns from a moiré system and a laser interferometer are used as images to be stitched and demonstrate the technique. Interferomteric fringes are used to find the required parameters to inter-relate locations and scale of the fringe patterns at different levels of zoom. The calculated parameters are scale and translation in both directions; these parameters make it possible to locate the coordinates of the region that the measurement system is zoomed in on, related to the area with lower magnification and relative locations of images within the same level of zoom. Results show that this technique is capable of finding the scale and shift parameters within the resolution of one pixel and therefore can restore continuity between images at different levels of zoom.