when compaer between image how can doing circle in the place where is different

hi ...i doing hammig dicetance to comper between images...i want when enter images it will find similary images and then Put circuits on different locations in the entering image how can do this?? plz help me???

[Image Analyst]

What do you mean by "circuit"? And "put"? And where do you want to put these "circuits" - what's the criteria for specifying the "location"?

By the way, browsers have spell checkers built in (at least Firefox does ), so you might take advantage of that.

And psnr() is a function built in to the Image Processing Toolbox.

[primrose khaleed]

thanks for your answer.. that mean if we comper between two images will put circle around the diferernt lik this immages:

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[primrose khaleed]

privouse images differnt this images by mathworks word...can we done this in matlab???

Answer 1

[Image Analyst]

Yes. Just extract each color channel, subtract them and call regionprops to get the bounding box. The attached demo, test.m3, will produce this figure:

[primrose khaleed]

this code can do it also by gray image?

[Image Analyst]

Yes. Make the adaptation something like this

[rows, columns, numberOfColorChannels] = size(rgbImage1);
if numberOfColorChannels == 1
  % Grayscale
  % Find non-matching pixels
  binaryImage = subtraction~=0;
else
  % RGB
  % Find non-matching pixels
  binaryImage = max(subtraction~=0, [], 3);
end

[primrose khaleed]

thank you very much image analyst...this code is very good... but when apply this code to detetion this difference as in picture it can not detection the differernce...how can do this??plz help me

[primrose khaleed]

this is result

[Image Analyst]

It would have been nice if you'd given this image first so I didn't waste my time on something you did not need at all. Like I said before in your other posts, I don't know how to analyze the underside of vehicles. Asking me a much, much simpler question will not suddenly make me be able to analyze these kinds of images, it only wastes our time.