1-D Interpolation with IPP

sureshdeoda — Thu, 22 Sep 2011 08:48:21 GMT

Hi,
I am trying to use IPP libraries for 1-d interpolation, as mentioned in some of the post in forum to use ippresize for sinle row to get the 1-d interpolation.
my code is as follows,

[bash]Ipp32f image_temp[] = { 1 ,2 ,3,4,5,6,7,8,9,10,11,12};
rows = 1;cols=12;
newrows = 1;newcols = 34;
size.width = cols;
size.height = rows;
roi.x=0;
roi.y=0;
roi.width=cols;
roi.height=rows;
step = cols*sizeof(float);
newstep = newcols*sizeof(float);
newsize.width=newcols;
newsize.height=newrows;
image_new=(float *) calloc(newrows*newcols, sizeof(float));
   if(image_new == NULL){printf("Unable to allocate memory for image_new \n"); exit(1);}

   xfactor=(float)newcols/cols;
   yfactor=(float)newrows/rows;
   status= ippiResize_32f_C1R((float*)image_temp, size, step, roi, (float*)image_new, newstep, newsize, xfactor, yfactor,IPPI_INTER_CUBIC);
   if ( status != ippStsNoErr )
   {
      exit(1);
   }



The results are,
1.0000 1.0000 1.0000 2.0000 2.0000 2.0000 3.0000 3.0000 4.0000 4.0000 4.0000 5.0000 5.0000 5.0000 6.0000 6.0000
6.0000 7.0000 7.0000 8.0000 8.0000 9.0000 9.0000 9.0000 10.0000 10.0000 10.0000 11.0000 11.0000 12.0000 12.0000 0.0000

Which somehow are truncated ?? 



Thanks ,
Suresh









[/bash]

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1-D Interpolation with IPP