Re: [ublas] returning a ublas matrix from a function

Subject: Re: [ublas] returning a ublas matrix from a function
From: sanann (padalasaisandeep_at_[hidden])
Date: 2014-08-22 03:08:57

I am using boost for image processing, I found the boost::gil a bit too
complicated for a newbie.. so instead i tried using other available
libraries in boost to start off with. 

So basically what i want to do is 
1. Read a gray scale image. 

2. Load the pixel values into a boost matrix. 

3. Apply a random filter to the matrix. 

4. convert the matrix back into and image for display. 

so far what I have done is 

   < QPixmap pixmap("lena.bmp"); 

   pixmap = pixmap.copy(512,512,128,128); 
   pixmap = pixmap.scaled(128,128); 
   QImage image = pixmap.toImage(); 
   QRgb col; 

   int g; 
   int width = pixmap.width(); 
   int height = pixmap.height(); 
   matrix<double> m(width,height); 

   for (int j = 0; j < m.size2(); j++) 
   { 
       for (int i = 0; i < m.size1(); i++) 
       { 
            m(i,j) = qGray(image.pixel(i,j)); 
       } 
   }> 

so basically i guess the pixel values are being saved into a matrix 'm' now
i would like to display this matrix as an image is there someway that i can
do this? 

thanks in advance

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