MATLAB: Filling open gaps in binary image object

bubblesfoamgaps fillingImage Processing Toolboxsuds

Hello…

i am working with experiment to find out the diameters of generated bubbles.

here is the original image.

here is the processed one.

here is an object from idx list:

this is an object in photo whivh have a same size as the processed one but with zoom in.

my question is:

how to make such an object to appear more circular???

i mean by more circular like this:

Regards,

Best Answer

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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MATLAB: Number of Object in binary image

Try this:

bw = imread('bw.png');
if ndims(bw) > 1
	bw = bw(:,:,1);
end
% Threshold
bw = bw > 128;
subplot(1, 2, 1);
imshow(bw, []);
% Fill holes
bw = imfill(bw, 'holes');
% Get areas
props = regionprops(bw, 'Area');
sortedAreas = sort([props.Area], 'descend')
% Looks like we need to throw away any blobs less than 1000 pixels or so
bw = bwareaopen(bw, 1000);
subplot(1, 2, 2);
imshow(bw);
% Count the blobs
[labeledImage, numBlobs] = bwlabel(bw);
fprintf('Found %d shapes.\n', numBlobs);

MATLAB: When working with an image and filling in gaps, do you only choose one: imerode, imdilate, imopen, imclsoe and imfill

Assuming your foreground blobs are white/true/1, imerode and imopen will enlarge the black areas and eat away at the white areas. imdilate and imclose will enlarge/smooth the white areas and fill in black areas near borders/perimeters. imfill() fills in black islands in a white blob. Usually you use only one: imfill. However if you want your blobs to have a bit smoother outline, then you can use imclose() before imfill().

Best Answer

Related Solutions

MATLAB: Number of Object in binary image

MATLAB: When working with an image and filling in gaps, do you only choose one: imerode, imdilate, imopen, imclsoe and imfill

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