correlation - image processing
in [Matlab]
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From: Gül Begüm Semis on 13 Jan 2010 10:34 hi, i m just trying to write a simple code, such that matlab is going to look at the correlation between two images. there are 3 different types of images (square,circle and triangle) depending on the templates by correlation i need the result whether it s a circle,square or triangle. i just need matlab to tell me that the target image is most correlated with one of the three templates i ve prepared. thank you,
From: ImageAnalyst on 13 Jan 2010 10:58 On Jan 13, 10:34 am, "Gül Begüm Semis" <begumse...(a)gmail.com> wrote: > hi, > i m just trying to write a simple code, such that matlab is going to look at the correlation between two images. there are 3 different types of images (square,circle and triangle) depending on the templates by correlation i need the result whether it s a circle,square or triangle. > i just need matlab to tell me that the target image is most correlated with one of the three templates i ve prepared. > > thank you, ----------------------------------------------------------------------------------- OK. We'll alert the media*. You'll probably be using xcorr2(). * http://www.imdb.com/title/tt0082031/quotes
From: Gül Begüm Semis on 13 Jan 2010 11:51 when i use xcorr2() the error i obtain is the following: a=imread('ucgen.jpg'); >> b=imread('targetucgen.jpg'); >> xcorr2(a,b) ??? Error using ==> rot90 at 22 A must be a 2-D matrix. Error in ==> xcorr2 at 17 c = conv2(a, rot90(conj(b),2));
From: Gül Begüm Semis on 13 Jan 2010 11:53 when i use xcorr2() the error i obtain is the following; a=imread('ucgen.jpg'); >> b=imread('targetucgen.jpg'); >> xcorr2(a,b) ??? Error using ==> rot90 at 22 A must be a 2-D matrix. Error in ==> xcorr2 at 17 c = conv2(a, rot90(conj(b),2)); ImageAnalyst <imageanalyst(a)mailinator.com> wrote in message <5c1f4e50-703d-4399-986e-84a8ede29f13(a)h9g2000yqa.googlegroups.com>... > On Jan 13, 10:34 am, "Gül Begüm Semis" <begumse...(a)gmail.com> wrote: > > hi, > > i m just trying to write a simple code, such that matlab is going to look at the correlation between two images. there are 3 different types of images (square,circle and triangle) depending on the templates by correlation i need the result whether it s a circle,square or triangle. > > i just need matlab to tell me that the target image is most correlated with one of the three templates i ve prepared. > > > > thank you, > > ----------------------------------------------------------------------------------- > OK. We'll alert the media*. > You'll probably be using xcorr2(). > > > > * http://www.imdb.com/title/tt0082031/quotes
From: Dave Robinson on 13 Jan 2010 12:05
"Gül Begüm Semis" <begumsemis(a)gmail.com> wrote in message <hiktph$11c$1(a)fred.mathworks.com>... > when i use xcorr2() the error i obtain is the following; > > a=imread('ucgen.jpg'); > >> b=imread('targetucgen.jpg'); > >> xcorr2(a,b) > ??? Error using ==> rot90 at 22 > A must be a 2-D matrix. > > Error in ==> xcorr2 at 17 > c = conv2(a, rot90(conj(b),2)); > > > > ImageAnalyst <imageanalyst(a)mailinator.com> wrote in message <5c1f4e50-703d-4399-986e-84a8ede29f13(a)h9g2000yqa.googlegroups.com>... > > On Jan 13, 10:34 am, "Gül Begüm Semis" <begumse...(a)gmail.com> wrote: > > > hi, > > > i m just trying to write a simple code, such that matlab is going to look at the correlation between two images. there are 3 different types of images (square,circle and triangle) depending on the templates by correlation i need the result whether it s a circle,square or triangle. > > > i just need matlab to tell me that the target image is most correlated with one of the three templates i ve prepared. > > > > > > thank you, > > > > ----------------------------------------------------------------------------------- > > OK. We'll alert the media*. > > You'll probably be using xcorr2(). > > > > > > Are your images greysale or are they RGB if the latter check out RGB2Gray() perhaps you can put them up onto a site where we can view them Regards Dave Robinson > > * http://www.imdb.com/title/tt0082031/quotes |