Count Object In An Image !!

Hi all ,
          Please i would like to know if anyone here
knows an algorithm to indentify the number of objets
in a given image ... for example a picture of cars in
street

           Waiting for Suggestions !!

                           Ahmad El-Saeed
	

do you know what you are asking for :)...There is no such algorithm
my friend. Welcome to work of computer vision...

--- Ahmad El-Saied <eng_matlaber@eng_...> wrote:

> Hi all ,
>           Please i would like to know if anyone here
> knows an algorithm to indentify the number of objets
> in a given image ... for example a picture of cars in
> street
> 
>            Waiting for Suggestions !!
> 
>                            Ahmad El-Saeed
>                       
> 
> 
> 		
> 
> 
>
	

Hi,
        I am working in deriving one equation which
uses Woodburys Identity (special case). But I am
unable to solve that. Can any one help. 

Basically I want to prove
inv(H'H+I)*H'= [ h1'inv(R1)/1+h1'inv(R1)h1;
h1'inv(R1)/1+h2'inv(R2)h2]

where
H= [h1 h2]; h1 and h2 is 2*1 column vectors.
R1= h2h2'+I
R2= h1h1'+i

Any help in this regard is highly appreciated.

Best Regards,
-SaiRamesh.
	

Hi,

Before counting the number of objects in an image you
first have to identify the object. There are several
different ways- for example you can calculate some
features of the object (like circularity, moments,
area etc). Once you've found some features that are
characteristic of the object (that identify the
object), you can count the number of objects by
setting a condition with a threshold. A counter will
incremenet each time the condition is satisfied e.g

     if (obj_circularity>=0.8 & obj_circularity<=1)

          circular_obj=circular_obj+1;

     end

This condition will go inside 2 for loops that run
through your entire image in a raster fashion.
Hope this is helpful.

E.S.
	--- Ahmad El-Saied <eng_matlaber@eng_...> wrote:

> Hi all ,
>           Please i would like to know if anyone here
> knows an algorithm to indentify the number of objets
> in a given image ... for example a picture of cars
> in
> street
> 
>            Waiting for Suggestions !!
> 
>                            Ahmad El-Saeed
>                       
> 
> 
> 		
> 
> 
>