MATLAB: 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.

contourfImage Processing Toolboximage segmentation

the image contain two type of objects vehicles and pedestriants. I want get the area and centroid to classify the object.

Best Answer

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
Related Question