Detecting bubbles in the movie
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Hello Everybody,
I am trying to perform the PLIF technique on the multi-phase flow to measure the dye concentration field in the flow. For this matter, I have to detect and remove bubbles and their attributes in the collected images as contaminations of the desired data. I tried different image processing technique to detect bubble in a single image. Recently, I came across the Computer vision toolbox of the Matlab and its abilities for object detection. Here you can find a sample of my recorded images: https://www.dropbox.com/s/rnwr0o3w1w17wpl/bubble_moves.avi?dl=0 The dark moving round objects are bubbles and their associated shadows. I tried the multiObjectTracking demo to detect bubbles in this movie.
I really appreciate any help and advice that you can give me about my problem. Thanks
Vadoud
1 Comment
Image Analyst
on 13 Oct 2014
Vadoud's "Answer" moved here.
Hi Image Analyst,
Here is the small size version of the movie:
https://www.dropbox.com/s/rnwr0o3w1w17wpl/bubble_moves.avi?dl=0
Answers (1)
Image Analyst
on 13 Oct 2014
It's almost 900 MB. So I didn't download it. Either attach a single frame, or see what kinds of tracking and capabilities the Computer Vision System Toolbox has.
2 Comments
Image Analyst
on 13 Oct 2014
See my Image Segmentation Tutorial at http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
Threshold for dark stuff, then filter based on the circularity or Bounding Box aspect ratio to get rid of the long black stripes. What's left should be bubbles, I guess.
I don't know what the PLIF technique is. There are some motion estimation methods that look over several frames to build like a "tube" over frames that can help predict where the object is moving to. I'm not too familiar with those algorithms.
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