Bubble detection and diameter estimation

22 次查看（过去 30 天）
Avdhesh Vermani
Avdhesh Vermani 2021-1-31
评论： Image Analyst 2021-2-9
Hey,
I wanted to detect and measure the diameter of the bubbles (elliptical and circular) in this image. I tried various techniques but couldn't do so.
Please help me out.

请先登录，再回答此问题。

采纳的回答

darova
darova 2021-1-31
  • binarize image
  • use regionprops with EquivDiameter option
  4 个评论
显示 2更早的评论
Avdhesh Vermani
Avdhesh Vermani 2021-1-31
编辑：Avdhesh Vermani 2021-2-5
Hey, could you suggest some way as how to binarize the image so that the bubbles and the background are segmented separately like I just want the bubbles and nothing else in the background. Or if you could suggest some way to segment bubbles from the background that would also be very helpful.
darova
darova 2021-2-5
Honestly i can't. You have a hard image. Don't know how to separate bubbles. THe only ideas i had - i said before

请先登录，再进行评论。

更多回答（1 个）

Image Analyst
Image Analyst 2021-1-31
Sounds like you got it figured out since you accepted an answer but I'd first have improved your image capture by placing a black velvet shroud behind your vessel to remove background clutter. Then I'd take an image with no bubbles and subtract the subtract that from the image with bubbles using imabsdiff(). Then threshold and call regionprops(). Realize that the bubbles may overlap and there is no way you can split them apart unless you do something like make a real time CT image. But the area fraction or size distribution of what you do have may be enough for you do differentiate different bubble makers or different bubble size distributions.
But anyway, glad you got it figured out.
  8 个评论
显示 6更早的评论
Avdhesh Vermani
Avdhesh Vermani 2021-2-9
编辑：Avdhesh Vermani 2021-2-9
I'll try this but can you tell me how to manually trace the bubbles? Like I need to draw ROI using image segmenter app right, or are there other methods as well?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Image Arithmetic 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by