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I am using contourf function with one isoline, i work with binary image. how i can calculate the surface and centroid of the filled contour.

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sassi nizar
sassi nizar 2015-10-25
回答： Image Analyst 2015-10-25
the image contain two type of objects vehicles and pedestriants. I want get the area and centroid to classify the object.

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Image Analyst
Image Analyst 2015-10-25
I'm not sure why you did it that way, but anyway, assuming you're happy with the binary image, just use regionprops() and ask for the area and centroid:
labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage , 'Area', 'Centroid');
See my Image Segmentation Tutorial for a full demo: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

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