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PatternMatch.cpp
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// PatternMatch.cpp: implementation of the CPatternMatch class.
//
//////////////////////////////////////////////////////////////////////
#include "PatternMatch.h"
#include <math.h>
#define PYRAMIDLAYER 2
#define SUCCEEDEDCOEF 0.75 // match coff threshold(0.75)
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CPatternMatch::CPatternMatch()
{
}
CPatternMatch::~CPatternMatch()
{
}
HRESULT CPatternMatch::PatternMatch(BYTE *pImage, int nImgRows, int nImgCols, double fImgScanSize,
BYTE *pPattern, int nPtnRows, int nPtnCols, double fPtnScanSize,
UINT nDataType,
double *px, double *py, double *pCoef)
{
*px=nImgCols/2;
*py=nImgRows/2;
//�ز�����ģ��
BYTE* pNewPattern=NULL;
int nNewPtnRows,nNewPtnCols;
Resample(pPattern,nPtnRows,nPtnCols,nDataType,fPtnScanSize,fImgScanSize,&pNewPattern,&nNewPtnRows,&nNewPtnCols);
//�������
int nX0,nY0,nHeight,nWidth;
//ƥ����
double X,Y,Coef;
BOOL bMatched=FALSE;
int nImgPydRowsPre=0,nImgPydColsPre=0;
//
int nLevel = 0;
for(int pl=PYRAMIDLAYER;pl>=1;pl--)
{
nLevel = (int)pow(2,pl-1);
BYTE* pImgPyd=NULL;
int nImgPydRows=0,nImgPydCols=0;
Pyramid(pImage,
nImgRows,nImgCols,
nDataType,
nLevel,
&pImgPyd,&nImgPydRows,&nImgPydCols);
BYTE* pPtnPyd=NULL;
int nPtnPydRows=0,nPtnPydCols=0;
Pyramid(pNewPattern,
nNewPtnRows,nNewPtnCols,
nDataType,
nLevel,
&pPtnPyd,&nPtnPydRows,&nPtnPydCols);
if(bMatched==FALSE)
{
nX0=nPtnPydCols/2;
nY0=nPtnPydRows/2;
nHeight=nImgPydRows-nPtnPydRows/2;
nWidth=nImgPydCols-nPtnPydCols/2;
}
else
{
nX0=(int)(X*(double)nImgPydCols/(double)nImgPydColsPre+0.5)-10;
nY0=(int)(Y*(double)nImgPydRows/(double)nImgPydRowsPre+0.5)-10;
nHeight=21;
nWidth=21;
}
bMatched=FALSE;
if(Match(pImgPyd,nImgPydRows,nImgPydCols,
pPtnPyd,nPtnPydRows,nPtnPydCols,
nDataType,
nX0,nY0,nHeight,nWidth,
&X,&Y,&Coef,
pl==1?TRUE:FALSE)==TRUE)
{
bMatched=TRUE;
nImgPydRowsPre=nImgPydRows;
nImgPydColsPre=nImgPydCols;
}
delete [] pImgPyd; pImgPyd=NULL;
delete [] pPtnPyd; pPtnPyd=NULL;
//��������ϲ�������ϲ���ƥ�䵽ͬ��㣬��֮����ֹ��������²�ƥ���˷�ʱ��
if(bMatched==FALSE)
{
break;
}
}
delete [] pNewPattern; pNewPattern=NULL;
*px=X;
*py=Y;
*pCoef=Coef;
return bMatched==TRUE?S_OK:S_FALSE;
}
BOOL CPatternMatch::Pyramid(BYTE *pSrcImage,
int nSrcRows, int nSrcCols,
UINT nDataType,
int nPrdLayer,
BYTE **ppDstImage, int *pnDstRows, int *pnDstCols)
{
int nRows=(int)(nSrcRows/nPrdLayer);
int nCols=(int)(nSrcCols/nPrdLayer);
if(nRows%2==0)
{
nRows+=1;
}
if(nCols%2==0)
{
nCols+=1;
}
*pnDstRows=nRows;
*pnDstCols=nCols;
BYTE* pBuffer=NULL;
switch(nDataType)
{
case Pixel_Byte:
{
pBuffer=new BYTE[nRows*nCols];
for(int i=0;i<nRows;i++)
{
BYTE* pBufferIndex=pBuffer+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
BYTE* pSrcImageIndex=pSrcImage+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=(BYTE)(gray/nCount);
}
}
}
break;
case Pixel_Int16:
{
pBuffer=(BYTE*)new unsigned short[nRows*nCols];
for(int i=0;i<nRows;i++)
{
unsigned short* pBufferIndex=((unsigned short*)pBuffer)+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
unsigned short* pSrcImageIndex=((unsigned short*)pSrcImage)+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=(unsigned short)(gray/nCount);
}
}
}
break;
case Pixel_SInt16:
{
pBuffer=(BYTE*)new short[nRows*nCols];
for(int i=0;i<nRows;i++)
{
short* pBufferIndex=((short*)pBuffer)+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
short* pSrcImageIndex=((short*)pSrcImage)+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=(short)(gray/nCount);
}
}
}
break;
case Pixel_Int32:
{
pBuffer=(BYTE*)new unsigned int[nRows*nCols];
for(int i=0;i<nRows;i++)
{
unsigned int* pBufferIndex=((unsigned int*)pBuffer)+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
unsigned int* pSrcImageIndex=((unsigned int*)pSrcImage)+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=(unsigned int)(gray/nCount);
}
}
}
break;
case Pixel_SInt32:
{
pBuffer=(BYTE*)new int[nRows*nCols];
for(int i=0;i<nRows;i++)
{
int* pBufferIndex=((int*)pBuffer)+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
int* pSrcImageIndex=((int*)pSrcImage)+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=(int)(gray/nCount);
}
}
}
break;
case Pixel_Float:
{
pBuffer=(BYTE*)new float[nRows*nCols];
for(int i=0;i<nRows;i++)
{
float* pBufferIndex=((float*)pBuffer)+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
float* pSrcImageIndex=((float*)pSrcImage)+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=(float)(gray/nCount);
}
}
}
break;
case Pixel_Double:
{
pBuffer=(BYTE*)new double[nRows*nCols];
for(int i=0;i<nRows;i++)
{
double* pBufferIndex=((double*)pBuffer)+i*nCols;
for(int j=0;j<nCols;j++)
{
double gray=0.0;
int nCount=0;
for(int m=0;m<nPrdLayer;m++)
{
if(i*nPrdLayer+m>=nSrcRows)
{
continue;
}
double* pSrcImageIndex=((double*)pSrcImage)+(i*nPrdLayer+m)*nSrcCols;
for(int n=0;n<nPrdLayer;n++)
{
if(j*nPrdLayer+n>=nSrcCols)
{
continue;
}
gray=gray+pSrcImageIndex[j*nPrdLayer+n];
nCount++;
}
}
pBufferIndex[j]=gray/nCount;
}
}
}
break;
default:
return FALSE;
}
*ppDstImage=pBuffer;
return TRUE;
}
BOOL CPatternMatch::Match(BYTE* pImage,int nImgRows,int nImgCols,
BYTE* pPattern,int nPtnRows,int nPtnCols,
UINT nDataType,
int nSearchX0,int nSearchY0,
int nSearchHeight,int nSearchWidth,
double* pX,double* pY,double* pCoef,
BOOL bInSubPixel)
{
if(pImage==NULL||pPattern==NULL||nImgRows<nPtnRows||nImgCols<nPtnCols)
{
return FALSE;
}
//�����������,����ҿ�
int nRow0=nSearchY0;
nRow0=__max(nRow0,0);
int nCol0=nSearchX0;
nCol0=__max(nCol0,0);
int nRow1=nRow0+nSearchHeight;
nRow1=__min(nRow1,nImgRows-1);
int nCol1=nCol0+nSearchWidth;
nCol1=__min(nCol1,nImgCols-1);
//��[nRow0,nRow1)[nCol0,nCol1)֮��Ѱ����������
double maxCoef=-99999.9;
double minCoef=99999.9;
int X,Y;
for(int i=nRow0;i<nRow1;i++)
{
for(int j=nCol0;j<nCol1;j++)
{
double si=0.0,sp=0.0,sii=0.0,spp=0.0,sip=0.0;
int nCount=0;
for(int m=-nPtnRows/2;m<=nPtnRows/2;m++)
{
if(m+i<0||m+i>=nImgRows)
{
continue;
}
switch(nDataType)
{
case Pixel_Byte:
{
BYTE* pImgIndex=pImage+(m+i)*nImgCols;
BYTE* pPtnIndex=pPattern+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
BYTE gi=pImgIndex[n+j];
BYTE gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Int16:
{
unsigned short* pImgIndex=((unsigned short*)pImage)+(m+i)*nImgCols;
unsigned short* pPtnIndex=((unsigned short*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_SInt16:
{
short* pImgIndex=((short*)pImage)+(m+i)*nImgCols;
short* pPtnIndex=((short*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Int32:
{
unsigned int* pImgIndex=((unsigned int*)pImage)+(m+i)*nImgCols;
unsigned int* pPtnIndex=((unsigned int*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_SInt32:
{
int* pImgIndex=((int*)pImage)+(m+i)*nImgCols;
int* pPtnIndex=((int*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Float:
{
float* pImgIndex=((float*)pImage)+(m+i)*nImgCols;
float* pPtnIndex=((float*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Double:
{
double* pImgIndex=((double*)pImage)+(m+i)*nImgCols;
double* pPtnIndex=((double*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
}
}
double N=(double)nCount;
double a=sip-si*sp/N;
double b=(sii-si*si/N)*(spp-sp*sp/N);
if(b>1e-5)
{
double Coef=a/(sqrt(b)+1e-6);
if(Coef>maxCoef)
{
maxCoef=Coef;
X=j;
Y=i;
}
}
}
}
*pX=X;
*pY=Y;
*pCoef=maxCoef;
if(maxCoef<SUCCEEDEDCOEF)
{
return FALSE;
}
//���������
if(bInSubPixel)
{
double CoefMatrix[3][3];
memset(CoefMatrix,0,sizeof(double)*9);
nSearchX0=X-1;
nSearchY0=Y-1;
nSearchHeight=3;
nSearchWidth=3;
int nRow0=nSearchY0;
nRow0=__max(nRow0,0);
int nCol0=nSearchX0;
nCol0=__max(nCol0,0);
int nRow1=nRow0+nSearchHeight;
int nCol1=nCol0+nSearchWidth;
for(int i=nRow0;i<nRow1;i++)
{
for(int j=nCol0;j<nCol1;j++)
{
double si=0.0,sp=0.0,sii=0.0,spp=0.0,sip=0.0;
int nCount=0;
for(int m=-nPtnRows/2;m<=nPtnRows/2;m++)
{
if(m+i<0||m+i>=nImgRows)
{
continue;
}
switch(nDataType)
{
case Pixel_Byte:
{
BYTE* pImgIndex=pImage+(m+i)*nImgCols;
BYTE* pPtnIndex=pPattern+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
BYTE gi=pImgIndex[n+j];
BYTE gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Int16:
{
unsigned short* pImgIndex=((unsigned short*)pImage)+(m+i)*nImgCols;
unsigned short* pPtnIndex=((unsigned short*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_SInt16:
{
short* pImgIndex=((short*)pImage)+(m+i)*nImgCols;
short* pPtnIndex=((short*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Int32:
{
unsigned int* pImgIndex=((unsigned int*)pImage)+(m+i)*nImgCols;
unsigned int* pPtnIndex=((unsigned int*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_SInt32:
{
int* pImgIndex=((int*)pImage)+(m+i)*nImgCols;
int* pPtnIndex=((int*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Float:
{
float* pImgIndex=((float*)pImage)+(m+i)*nImgCols;
float* pPtnIndex=((float*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
case Pixel_Double:
{
double* pImgIndex=((double*)pImage)+(m+i)*nImgCols;
double* pPtnIndex=((double*)pPattern)+(m+nPtnRows/2)*nPtnCols;
for(int n=-nPtnCols/2;n<=nPtnCols/2;n++)
{
if(n+j<0||n+j>=nImgCols)
{
continue;
}
double gi=pImgIndex[n+j];
double gp=pPtnIndex[n+nPtnCols/2];
si=si+gi;
sp=sp+gp;
sii=sii+gi*gi;
spp=spp+gp*gp;
sip=sip+gi*gp;
nCount++;
}
}
break;
}
}
double N=(double)nCount;
double a=sip-si*sp/N;
double b=(sii-si*si/N)*(spp-sp*sp/N);
if(b>1e-5)
{
double Coef=a/sqrt(b);
CoefMatrix[i-nRow0][j-nCol0]=Coef;
}
else
{
CoefMatrix[i-nRow0][j-nCol0]=0.0;
}
}
}
double xcoef0=/*CoefMatrix[0][0]+*/CoefMatrix[1][0]/*+CoefMatrix[2][0]*/;
double xcoef1=/*CoefMatrix[0][1]+*/CoefMatrix[1][1]/*+CoefMatrix[2][1]*/;
double xcoef2=/*CoefMatrix[0][2]+*/CoefMatrix[1][2]/*+CoefMatrix[2][2]*/;
double ycoef0=/*CoefMatrix[0][0]+*/CoefMatrix[0][1]/*+CoefMatrix[0][2]*/;
double ycoef1=/*CoefMatrix[1][0]+*/CoefMatrix[1][1]/*+CoefMatrix[1][2]*/;
double ycoef2=/*CoefMatrix[2][0]+*/CoefMatrix[2][1]/*+CoefMatrix[2][2]*/;
double xoffset=(xcoef0-xcoef2)/(xcoef0+xcoef2-2.0*xcoef1)/2.0;
double yoffset=(ycoef0-ycoef2)/(ycoef0+ycoef2-2.0*ycoef1)/2.0;
if(1)
{
*pX += xoffset;
*pY += yoffset;
double CoefX = - (xcoef0-xcoef2)*(xcoef0-xcoef2)
/(8*(xcoef0+xcoef2-2*xcoef1));
double CoefY = - (ycoef0-ycoef2)*(ycoef0-ycoef2)
/(8*(ycoef0+ycoef2-2*ycoef1));
*pCoef += CoefX+CoefY;
if(*pCoef>1.00)
{
*pCoef=1.00;
}
}
}
return TRUE;
}
BOOL CPatternMatch::Resample(BYTE* pSrcImage,
int nSrcRows,int nSrcCols,
UINT nDataType,
double lfSrcScanSize,double lfDstScanSize,
BYTE** ppDstImage,
int* pnDstRows,int* pnDstCols)
{
int nRows=(int)(nSrcRows/(lfDstScanSize/lfSrcScanSize));//�˴�����0.5�������
int nCols=(int)(nSrcCols/(lfDstScanSize/lfSrcScanSize));
if(nRows%2==0)
{
nRows+=1;
}
if(nCols%2==0)
{
nCols+=1;
}
*pnDstRows=nRows;
*pnDstCols=nCols;
double fXScale=(double)nSrcCols/(double)nCols;
double fYScale=(double)nSrcRows/(double)nRows;
BYTE* pBuffer=NULL;
switch(nDataType)
{
case Pixel_Byte:
{
pBuffer=new BYTE[nRows*nCols];
for(int i=0;i<nRows;i++)
{
int nRow0=(int)(i*fYScale);
int nRow2=__min(nRow0+1,nSrcRows-1);
double dy=i*fYScale-nRow0;
for(int j=0;j<nCols;j++)
{
int nCol0=(int)(j*fXScale);
int nCol2=__min(nCol0+1,nSrcCols-1);
double dx=j*fXScale-nCol0;
BYTE G0,G1,G2,G3;
G0=pSrcImage[nRow0*nSrcCols+nCol0];
G1=pSrcImage[nRow0*nSrcCols+nCol2];
G2=pSrcImage[nRow2*nSrcCols+nCol2];
G3=pSrcImage[nRow2*nSrcCols+nCol0];
double G=(1.0-dx) * (1.0-dy) * G0+
dx * (1.0-dy) * G1+
dx * dy * G2+
(1.0-dx) * dy * G3;
pBuffer[i*nCols+j]=(BYTE)G;
}
}
}
break;
case Pixel_Int16:
{
pBuffer=(BYTE*)new unsigned short[nRows*nCols];
for(int i=0;i<nRows;i++)
{
int nRow0=(int)(i*fYScale);
int nRow2=__min(nRow0+1,nSrcRows-1);
double dy=i*fYScale-nRow0;
for(int j=0;j<nCols;j++)
{
int nCol0=(int)(j*fXScale);
int nCol2=__min(nCol0+1,nSrcCols-1);
double dx=j*fXScale-nCol0;
double G0,G1,G2,G3;
G0=((unsigned short*)pSrcImage)[nRow0*nSrcCols+nCol0];
G1=((unsigned short*)pSrcImage)[nRow0*nSrcCols+nCol2];
G2=((unsigned short*)pSrcImage)[nRow2*nSrcCols+nCol2];
G3=((unsigned short*)pSrcImage)[nRow2*nSrcCols+nCol0];
double G=(1.0-dx) * (1.0-dy) * G0+
dx * (1.0-dy) * G1+
dx * dy * G2+
(1.0-dx) * dy * G3;
((unsigned short*)pBuffer)[i*nCols+j]=(BYTE)G;
}
}
}
break;
case Pixel_SInt16:
{
pBuffer=(BYTE*)new short[nRows*nCols];
for(int i=0;i<nRows;i++)
{
int nRow0=(int)(i*fYScale);
int nRow2=__min(nRow0+1,nSrcRows-1);
double dy=i*fYScale-nRow0;
for(int j=0;j<nCols;j++)
{
int nCol0=(int)(j*fXScale);
int nCol2=__min(nCol0+1,nSrcCols-1);
double dx=j*fXScale-nCol0;
double G0,G1,G2,G3;
G0=((short*)pSrcImage)[nRow0*nSrcCols+nCol0];
G1=((short*)pSrcImage)[nRow0*nSrcCols+nCol2];
G2=((short*)pSrcImage)[nRow2*nSrcCols+nCol2];
G3=((short*)pSrcImage)[nRow2*nSrcCols+nCol0];
double G=(1.0-dx) * (1.0-dy) * G0+
dx * (1.0-dy) * G1+
dx * dy * G2+
(1.0-dx) * dy * G3;
((short*)pBuffer)[i*nCols+j]=(BYTE)G;
}
}
}
break;
case Pixel_Int32:
{
pBuffer=(BYTE*)new unsigned int[nRows*nCols];
for(int i=0;i<nRows;i++)
{
int nRow0=(int)(i*fYScale);
int nRow2=__min(nRow0+1,nSrcRows-1);
double dy=i*fYScale-nRow0;
for(int j=0;j<nCols;j++)
{
int nCol0=(int)(j*fXScale);
int nCol2=__min(nCol0+1,nSrcCols-1);
double dx=j*fXScale-nCol0;
double G0,G1,G2,G3;
G0=((unsigned int*)pSrcImage)[nRow0*nSrcCols+nCol0];
G1=((unsigned int*)pSrcImage)[nRow0*nSrcCols+nCol2];
G2=((unsigned int*)pSrcImage)[nRow2*nSrcCols+nCol2];
G3=((unsigned int*)pSrcImage)[nRow2*nSrcCols+nCol0];
double G=(1.0-dx) * (1.0-dy) * G0+
dx * (1.0-dy) * G1+
dx * dy * G2+
(1.0-dx) * dy * G3;