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mappVision帮助助手 > 机器视觉帮助 > mapp Vision > 诊断 > 常见问题 > Blob 常见问题 功能无法识别单像素 Blob。 |
视觉功能 Blob会 自动应用形态学运算 "Opening "作为噪声抑制的预处理(参见 "使用侵蚀和扩张进行图像分割")。 因此, 在搜索小圆块(例如 AreaMin = 1) 时 ,得到的结果比预期的要少得多,因为这些小结构在噪声抑制过程中被过滤掉了。
Vision function Blob automatically applies morphological operation "Opening" as preprocessing for noise suppression (see "Image segmentation with erosion and dilation"). When searching for small blobs (e.g. with AreaMin = 1), much fewer results are therefore obtained than expected since these small structures are filtered away during noise suppression.