Vision-based online measurement method for liquid viscosity
A measurement method and viscosity technology, applied in the field of image processing, can solve problems such as inaccurate measurement results, cumbersome operations, and affecting product quality, and achieve the effects of improving sensitivity and saving labor costs
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[0053] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0054] A velocity field and viscosity online measurement system, comprising the following steps:
[0055] Image acquisition: collect the flow image of the liquid;
[0056] Calculate the optical flow field: calculate the optical flow field by the optical flow method;
[0057] Calculate the velocity field: Calculate the velocity field according to the camera parameters and the optical flow field;
[0058] Estimated Viscosity: Estimates liquid viscosity from the velocity field.
[0059] The camera collects images at fixed time intervals of the flowing liquid, that is, a sequence of pictures or a video.
[0060] Calculate the optical flow field of adjacent pictures in a picture sequence or video by sparse or dense optical flow method. The sparse optical flow method first selects the pixel points with obvious brightness changes in the picture a...
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