correlation - image processing
in [Matlab]
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From: ImageAnalyst on 13 Jan 2010 16:01 On your web site, you say "the only aim is to tell whether the taken picture suits one of those templates or not.. " Well if that's true then you certainly don't want to, or need to, do a cross correlation. You simply need to binarize the image (of the triangle, circle, or square) and calculate some measurements, such as the perimeter^2/area ratio. Very easy. Each of the figures will have a different value for that ratio. See my demo for an example. http://www.mathworks.com/matlabcentral/fileexchange/25157
From: Gül Begüm Semis on 4 Feb 2010 02:32 I was going to do the project from perimeter^2/area however as far as i know an i foun don matlab help the only dunction to calctulate perimeter of an object is the bwperim functiom however it retursn a matrix result. i need a scalar result to be able to compute the ratio perim^2/area. how can i obtain the scalar perimeter of an object?
From: ImageAnalyst on 4 Feb 2010 06:19
On Feb 4, 2:32 am, "Gül Begüm Semis" <begumse...(a)gmail.com> wrote: > I was going to do the project from perimeter^2/area however as far as i know an i foun don matlab help the only dunction to calctulate perimeter of an object is the bwperim functiom however it retursn a matrix result. i need a scalar result to be able to compute the ratio perim^2/area. > how can i obtain the scalar perimeter of an object? --------------------------------------------------------- It's one of the things regionprops() can compute. Did you ever run the demo - it's in there! |