MATLAB Central Newsreader - histogram in matlab

histogram in matlab

huda nawaf — Thu, 09 Aug 2007 22:06:23 -0400

HI
What is the function that I can use to compute the gray
level histogram in Matlab?

thanks,huda

Re: histogram in matlab

us — Thu, 09 Aug 2007 22:45:10 -0400

huda nawaf
<SNIP it's all in the language...

> What is the function that I can use to compute the gray
level histogram in Matlab...

a hint:

     help histc;

% an image
     img=uint8(floor(256*rand(50,50)));
% the engine
     n=histc(img(:),0:255);
% the result
     subplot(2,1,1);
     image(img);
     axis image;
     colormap(gray(256));
     subplot(2,1,2);
     stem(n);
     set(gca,'xlim',[0,255]);

us

Re: histogram in matlab

huda nawaf — Tue, 21 Aug 2007 08:51:06 -0400

"huda nawaf" <halmamory@yahoo.com> wrote in message
<f9g34v$hi8$1@fred.mathworks.com>...
> HI
> What is the function that I can use to compute the gray
> level histogram in Matlab?
>
> thanks,huda
>
hi dear,
thank you very much,I tried execute the code that you sent
and I gained the result .

Re: histogram in matlab

huda nawaf — Sat, 01 Sep 2007 17:19:15 -0400

"huda nawaf" <halmamory@yahoo.com> wrote in message
<fae91q$lg4$1@fred.mathworks.com>...
> "huda nawaf" <halmamory@yahoo.com> wrote in message
> <f9g34v$hi8$1@fred.mathworks.com>...
> > HI
> > What is the function that I can use to compute the
gray
> > level histogram in Matlab?
> >
> > thanks,huda
> >
> hi dear,
> thank you very much,I tried execute the code that you
sent
> and I gained the result .
hello again
I need now the histogram of color image .How?
best,huda