I have a liquid bow wave that is recorded by a high-speed camera. This gives me a lot of images that I want to analyze automatically. I want to determine the outer contour of the liquid and preferably extract the coordinates of the individual pixels.
When using edge detection like canny, I run into the problem that there is an edge at the top that is caused by the drop in brightness of the lighting. Furthermore, I don't know how to delete the small edges and keep only the "main edge" for further evaluation.
