关键词: 背景差分法, 图像处理, 虚拟检测线, 毛细管粘度计检定

Abstract: Aiming at the shortcomings of the capillary viscometer liquid level detection method, the frame differential method and background difference algorithm are studied, a method for multi-capillary viscometer verification is conceived and designed. By the image processing method of background difference method, the segmentation of the moving foreground and background is achieved. A virtual test line is used to detect the capillary viscometer liquid level. Visual C++ combined with Opencv is used for programming, the method is tested for the four capillary viscometer, and the effective result is obtained.

Key words: background difference, image processing, virtual test line, capillary viscometer verification