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AUTOMATIC RECOGNITION OF TWO-DIMENSIONAL VORTICES BY DIGITAL IMAGE PROCESSING

机译:通过数字图像处理自动识别二维语音

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In this study, a digital image processing method has been developed to detect automatically the vortex structure behind a circular cylinder. The vortex recognition algorithm is based on the special features of a typical vortex; namely, the circular-like, elliptic-like, and/or the spiral-like characteristics extracted from the geometrical features of the vortex. The algorithm includes Mo parts; namely, pre-processing and vortex structure recognition. The results indicate that for a 256 x 240 image, all the vortices in the image can be detected in about 100 iterations if the noise level is low or moderate. But if the noise level is high and the pre-processing is poorly done, the algorithm is not reliable. The same situation occurs also if there are break points due to thinning or skeletonizing. These are the limitations of the present algorithm.
机译:在这项研究中,已经开发出一种数字图像处理方法来自动检测圆柱体后面的涡旋结构。涡流识别算法基于典型涡流的特殊功能;即,从涡旋的几何特征提取的圆形,椭圆形和/或螺旋形特征。该算法包括Mo部分;即预处理和涡旋结构识别。结果表明,对于256 x 240的图像,如果噪声水平较低或中等,则可以大约100次迭代检测图像中的所有涡旋。但是,如果噪声水平很高且预处理效果不佳,则该算法不可靠。如果由于细化或骨架化而出现断点,也会发生相同的情况。这些是本算法的局限性。

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