vc++ can't find #include <unistd.h> #include <getopt.h>

Question

I'm trying to get some image processing code working in MS VC++ 2010 express. The code uses opencv so I've downloaded that and installed it. I've created a project and added the opencv files to the project. I've 2 probs that the compiler can't open #include <unistd.h> and #include <getopt.h>. Any ideas how to include these headers in my project. Sorry but I'm new to c++ and usually program in android/eclipse. Thanks!

#include <cv.h>
#include <highgui.h>
#include <math.h>
#include <unistd.h>
#include <getopt.h>
#include <iostream>

void sampleImage(const IplImage* arr, float idx0, float idx1, CvScalar& res)
{
  if(idx0<0 || idx1<0 || idx0>(cvGetSize(arr).height-1) || idx1>(cvGetSize(arr).width-1)){
    res.val[0]=0;
    res.val[1]=0;
    res.val[2]=0;
    res.val[3]=0;
    return;
  }
  float idx0_fl=floor(idx0);
  float idx0_cl=ceil(idx0);
  float idx1_fl=floor(idx1);
  float idx1_cl=ceil(idx1);

  CvScalar s1=cvGet2D(arr,(int)idx0_fl,(int)idx1_fl);
  CvScalar s2=cvGet2D(arr,(int)idx0_fl,(int)idx1_cl);
  CvScalar s3=cvGet2D(arr,(int)idx0_cl,(int)idx1_cl);
  CvScalar s4=cvGet2D(arr,(int)idx0_cl,(int)idx1_fl);
  float x = idx0 - idx0_fl;
  float y = idx1 - idx1_fl;
  res.val[0]= s1.val[0]*(1-x)*(1-y) + s2.val[0]*(1-x)*y + s3.val[0]*x*y + s4.val[0]*x*(1-y);
  res.val[1]= s1.val[1]*(1-x)*(1-y) + s2.val[1]*(1-x)*y + s3.val[1]*x*y + s4.val[1]*x*(1-y);
  res.val[2]= s1.val[2]*(1-x)*(1-y) + s2.val[2]*(1-x)*y + s3.val[2]*x*y + s4.val[2]*x*(1-y);
  res.val[3]= s1.val[3]*(1-x)*(1-y) + s2.val[3]*(1-x)*y + s3.val[3]*x*y + s4.val[3]*x*(1-y);
}

float xscale;
float yscale;
float xshift;
float yshift;

float getRadialX(float x,float y,float cx,float cy,float k){
  x = (x*xscale+xshift);
  y = (y*yscale+yshift);
  float res = x+((x-cx)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
  return res;
}

float getRadialY(float x,float y,float cx,float cy,float k){
  x = (x*xscale+xshift);
  y = (y*yscale+yshift);
  float res = y+((y-cy)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
  return res;
}

float thresh = 1;
float calc_shift(float x1,float x2,float cx,float k){
  float x3 = x1+(x2-x1)*0.5;
  float res1 = x1+((x1-cx)*k*((x1-cx)*(x1-cx)));
  float res3 = x3+((x3-cx)*k*((x3-cx)*(x3-cx)));

  //  std::cerr<<"x1: "<<x1<<" - "<<res1<<" x3: "<<x3<<" - "<<res3<<std::endl;

  if(res1>-thresh && res1 < thresh)
    return x1;
  if(res3<0){
    return calc_shift(x3,x2,cx,k);
  }
  else{
    return calc_shift(x1,x3,cx,k);
  }
}

int main(int argc, char** argv)
{
  IplImage* src = cvLoadImage( argv[1], 1 );
  IplImage* dst = cvCreateImage(cvGetSize(src),src->depth,src->nChannels);
  IplImage* dst2 = cvCreateImage(cvGetSize(src),src->depth,src->nChannels);
  float K=atof(argv[3]);
  float centerX=atoi(argv[4]);
  float centerY=atoi(argv[5]);
  int width = cvGetSize(src).width;
  int height = cvGetSize(src).height;

  xshift = calc_shift(0,centerX-1,centerX,K);
  float newcenterX = width-centerX;
  float xshift_2 = calc_shift(0,newcenterX-1,newcenterX,K);

  yshift = calc_shift(0,centerY-1,centerY,K);
  float newcenterY = height-centerY;
  float yshift_2 = calc_shift(0,newcenterY-1,newcenterY,K);
  //  scale = (centerX-xshift)/centerX;
  xscale = (width-xshift-xshift_2)/width;
  yscale = (height-yshift-yshift_2)/height;

  std::cerr<<xshift<<" "<<yshift<<" "<<xscale<<" "<<yscale<<std::endl;
  std::cerr<<cvGetSize(src).height<<std::endl;
  std::cerr<<cvGetSize(src).width<<std::endl;

  for(int j=0;j<cvGetSize(dst).height;j++){
    for(int i=0;i<cvGetSize(dst).width;i++){
      CvScalar s;
      float x = getRadialX((float)i,(float)j,centerX,centerY,K);
      float y = getRadialY((float)i,(float)j,centerX,centerY,K);
      sampleImage(src,y,x,s);
      cvSet2D(dst,j,i,s);

    }
  }
#if 0
  cvNamedWindow( "Source1", 1 );
  cvShowImage( "Source1", dst);
  cvWaitKey(0);
#endif

  cvSaveImage(argv[2],dst,0);

#if 0
  for(int j=0;j<cvGetSize(src).height;j++){
    for(int i=0;i<cvGetSize(src).width;i++){
      CvScalar s;
      sampleImage(src,j+0.25,i+0.25,s);
      cvSet2D(dst,j,i,s);
    }
  }

  cvNamedWindow( "Source1", 1 );
  cvShowImage( "Source1", src);
  cvWaitKey(0);
#endif

}

Answer 1

<unistd.h> is the Unix standard header and is not found on Windows. http://en.wikipedia.org/wiki/Unistd.h

I don't know about <getopt.h>.

It seems that your code is written for a Unix-based machine, not Windows.

Answer 2

Based on a quick look at this source file, you shouldn't need either of those includes. You definitely don't need getopt here, as you're not using the getopt functions it defines. Just remove those includes, and see if things don't just work.