ImageAnalyst <imageanalyst@mailinator.com> wrote in message <606c67cf532c4dffa5429480b9c0d55a@q11g2000yqi.googlegroups.com>...
> On Jul 23, 1:14?pm, abhishek <abhigra...@gmail.com> wrote:
> > On Jul 23, 8:48?am, arun <aragorn1...@gmail.com> wrote:
> >
> >
> >
> >
> >
> > > On Jul 23, 3:46?pm, abhishek <abhigra...@gmail.com> wrote:
> >
> > > > hey,
> > > > can anyone plzz tell what exactly is feature vector of a image..
> > > > how to get this feature vector of the image in matlab
> > > > our ma'am has told us to calculate the mean of RGB...wat is dat????
> > > > any answer would be appreciated.............
> >
> > > when you load an image in matlab (a colour image) into a variable, it
> > > contains 3 components, (R)ed, (G)reen and (B)lue.
> >
> > > help imread; % this reads the file into a 3Dmatrix(the 3rd dim
> > > contains R and G and B)
> >
> > > All you have to do is to take the mean of these values of
> > > corresponding indices, from what you say.
> > > best, arun.
> >
> > thank u very much for the information provided......
> > Our ma'am has also said us to retreive the feature vector of the
> > image.....
> > can u plzz give me some idea abt feature vector quoted text 
> >
> >  Show quoted text 
>
> 
> There is no one, single feature vector for all images. You need to
> define your list of features that YOU want for your particular set of
> images. This could be mean, std dev, various shape descriptions (such
> as circularity, area, perimeter, Euler number, etc.), color, or
> whatever you want to measure. You need to define this first. Then
> quantify (measure) them using algorithms. Then string all the
> numerical measurements together into a single numerical array.
> There. That's your feature vector. Now, tell me what features you
> want to measure, post an image, and then we can continue.
>
> There's a very, very short description here:
> http://en.wikipedia.org/wiki/Feature_vector
> (someone should upon that).
> Regards,
> ImageAnalyst
> On Jul 23, 3:46 pm, abhishek <abhigra...@gmail.com> wrote:
> > hey,
> > can anyone plzz tell what exactly is feature vector of a image..
> > how to get this feature vector of the image in matlab
> > our ma'am has told us to calculate the mean of RGB...wat is dat????
> > any answer would be appreciated.............
> when you load an image in matlab (a colour image) into a variable, it
> contains 3 components, (R)ed, (G)reen and (B)lue.
> help imread; % this reads the file into a 3Dmatrix(the 3rd dim
> contains R and G and B)
> All you have to do is to take the mean of these values of
> corresponding indices, from what you say.
> best, arun.
thank u very much for the information provided......
Our ma'am has also said us to retreive the feature vector of the
image.....
can u plzz give me some idea abt feature vector
