filling open gaps in binary image object

I've done image processing on lather/suds/bubbles for several projects. First of all you need to get a good image without specular reflections, and this means using crossed polarizers and probably a broad, diffuse overhead light source. Of course it's best if you can press the bubbles between two plates in a monolayer, or against one glass plates if two are not possible.

If you can, try to make the background black and free of clutter and objects.

Then to get rid of interior walls of other bubbles through larger bubbles above you might try a morphological opening.

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Adam Danz 2020-1-7

编辑：Adam Danz 2020-1-7

Yep, that makes a lot of sense. Thanks.

I suppose pressing them won't unintentionally combine too many of the adjacent bubbles.

Mohammad Hdaib 2020-1-10

my special thanks to u sir,

the photo i submitted was just a trial for the code and for further photos i used black screen and it enhanced it alittle bit......

but my biggest problem was specular reflections and now i have an idea how to solve it.

thx,

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Answer 2

KALYAN ACHARJYA 2019-11-23

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https://ww2.mathworks.cn/matlabcentral/answers/492684-filling-open-gaps-in-binary-image-object#answer_402918

编辑：KALYAN ACHARJYA 2019-11-23

#Approximate

se=strel('diamond',3);
BW2=~imdilate(BW1,se); % 2nd Binary image
BW3=bwareafilt(BW2,1);
BW4=imerode(BW3,se);

Do the smothing & measure approximated distance (dist on multiple direction & do average to find diameter) or regionprops.

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Mohammad Hdaib 2020-1-7

thx for ur answer,

i already tried regionprops, but my question isn't about: how to find the diameter???. it is about how to make objects more circular and look like real bubbles???

i tried convhull and it gave me a very nice results.....

thx.....

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