MATLAB: How center of mass of an image is calculated

center of massImage Processing Toolbox

sir, do you have any matlab code for finding center of mass of an image.

Best Answer

Probably the easiest is to use regionprops(). Something like (untested)

binaryImage = true(size(grayImage));
labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage, grayImage, 'WeightedCentroid');
centerOfMass = measurements.WeightedCentroid;

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MATLAB: How to Remove Minor background details from the image

It's hard to say without seeing the image. Perhaps thresholding? Perhaps something else first? But after all the processing steps are done, the last step in segmentation is always thresholding. You do whatever you need to do to get to a point where you can say "this is foreground" and "this is background" and that is thresholding.

MATLAB: Check if the code is correct or not for finding the diameter of objects in an image.

No, you need to create a binary image first, plus you can do it all in one call to regionprops():

originalImage = imread('result.jpg');
originalImage=rgb2gray(originalImage);
binaryImage = originalImage > thresholdValue; % for example 80 or 142 or some value.
labeledImage = bwlabel(binaryImage, 8);
D=regionprops(labeledImage,'area','EquivDiameter');

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MATLAB: How to Remove Minor background details from the image

MATLAB: Check if the code is correct or not for finding the diameter of objects in an image.

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