Re: How to access pixels - urgent question

Hi Luis,

thanx for your help.
But I dont quite understand this!

can you please comment that code?`

Thnx a lot



--- In OpenCV@xxxxxxxxxxxxxxx, Luiz Curado <lutitus@...> wrote:
>
>   Hi, 
>    
>   Try this:
>    
>   uchar getPixel( IplImage*img, int lin, int col ) {
>   return ((uchar*)(img->imageData + img->widthStep*lin))[col] ; 
>   }
>    
>   void setPixel( IplImage*img, int lin, int col, uchar valor ) {
>   ((uchar*)(img->imageData + img->widthStep*lin))[col] = valor ;
>   }
>   
> Regards,
>    
>   Luiz Reginaldo
>   
> evaspies <evaspies@...> escreveu:
>   Hi guys.
> 
> Im trying to access Pixels of a grayscale image to get a
> representantive   value. best of all would be if the value lies
> between 0 für black and 255 für white.
> Do you have an Idea?
> I tried to use iplGetPixel, but that function is only for 3 or 4
> channel pictures.
> 
> Thanx for xour help!
> 
> 
> 
> 
> 
> 
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