Dear friends,

 I want to check whether only certain colors, lets say yellow, orange, green and also combinations of these colors are there in the image and if there is some other color then the system should give an error signal. can any 1 help me in developing such system???

On Feb 23, 2:23=A0am, "RAJKUMAR Palaniappan" <prk_m...@yahoo.co.in>
wrote:
> Dear friends,
>
> =A0I want to check whether only certain colors, lets say yellow, orange, =
green and also combinations of these colors are there in the image and if t=
here is some other color then the system should give an error signal. can a=
ny 1 help me in developing such system???

--------------------------------------------
You have to do color quantization:
http://en.wikipedia.org/wiki/Color_quantization

Also, see my color classification demos:
http://www.mathworks.com/matlabcentral/fileexchange/authors/31862

With color quantization u can reduce the number of colors but i want to find if there is a unwanted color in the same image except green,orange,yellow


ImageAnalyst <imageanalyst@mailinator.com> wrote in message <d4670e28-a4cf-447a-8938-4b72598259fa@t13g2000prc.googlegroups.com>...
> On Feb 23, 2:23 am, "RAJKUMAR Palaniappan" <prk_m...@yahoo.co.in>
> wrote:
> > Dear friends,
> >
> >  I want to check whether only certain colors, lets say yellow, orange, green and also combinations of these colors are there in the image and if there is some other color then the system should give an error signal. can any 1 help me in developing such system???
> 
> --------------------------------------------
> You have to do color quantization:
> http://en.wikipedia.org/wiki/Color_quantization
> 
> Also, see my color classification demos:
> http://www.mathworks.com/matlabcentral/fileexchange/authors/31862

On Mar 2, 3:33=A0am, "RAJKUMAR Palaniappan" <prk_m...@yahoo.co.in>
wrote:
> With color quantization u can reduce the number of colors but i want to f=
ind if there is a unwanted color in the same image except green,orange,yell=
ow
>
> ImageAnalyst <imageanal...@mailinator.com> wrote in message <d4670e28-a4c=
f-447a-8938-4b7259825...@t13g2000prc.googlegroups.com>...
> > On Feb 23, 2:23=A0am, "RAJKUMAR Palaniappan" <prk_m...@yahoo.co.in>
> > wrote:
> > > Dear friends,
>
> > > =A0I want to check whether only certain colors, lets say yellow, oran=
ge, green and also combinations of these colors are there in the image and =
if there is some other color then the system should give an error signal. c=
an any 1 help me in developing such system???
>
> > --------------------------------------------
> > You have to do color quantization:
> >http://en.wikipedia.org/wiki/Color_quantization
>
> > Also, see my color classification demos:
> >http://www.mathworks.com/matlabcentral/fileexchange/authors/31862

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------

Did you see my color classification demos, like I suggested?
http://www.mathworks.com/matlabcentral/fileexchange/authors/31862
Just find the unwanted colors.