Image processing - calculate center mass and its initial moment

I have video which contains a 1000 frames, in spesific frame I did segmentation and the image become white and black as it attched. how I can find the center mass for this segmented white part.

Answer 1

[Image Analyst]

Call regionprops(binaryImage, 'Centroid')

binaryImage = bwareafilt(binaryImage, 1); % Take largest only.
props = regionprops(binaryImage, 'Centroid') % Find centroid.
xCentroid = props.Centroid(1);
yCentroid = props.Centroid(2);

See the Image Segmentation Tutorial in my file Exchange for a full demo:

Image Analyst's File Exchange

[Ali alshamrani]

thanks for your help. I found this when you replied to same question but I have no idea how your script read my image.

[Image Analyst]

My snippet does not read your image. You have already created the image and you posted it as 00837.png. So you already have it though I don't know what you called it. Just replace binaryImage with the name of the image variable you used when you saved that.

[Ali alshamrani]

can I find the moment of inertia after I found the center mass?

[Image Analyst]

Yes. Demo attached. Adapt as needed.

[Ali alshamrani]

hi, I actually the code worked very well but the only problem was i have many blobs and the code just took the largest one. I want to include all blobs to get the centroid all. How can I do that, beside Is there any way to draw a specific area in the image to be the only interest area?

[Image Analyst]

Just crop out each blob one at a time and compute the central moments one at a time.