?? loadbmpfile.cpp
字號:
lpTempImgData=(LPBITMAPINFOHEADER)LocalLock(hTempImgData);
lpPtr=(char *)lpImgData;
lpTempPtr=(char *)lpTempImgData;
//先將原圖直接拷貝過來，其實主要是拷貝周圍一圈的象素
memcpy(lpTempPtr,lpPtr,BufSize);
///////////////////////////////////////////////////
for(y=1;y<bi.biHeight-1;y++) //注意y的范圍是從1到bi.biHeight-2
for(x=1;x<bi.biWidth-1;x++)
{ //注意x的范圍是從1到bi.biWidth-2
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
lpTempPtr=(char*)lpTempImgData+(BufSize-LineBytes-y*LineBytes)+x;
TempNum=(float)((unsigned char)*(lpPtr+LineBytes-1))*CoefArray[0];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes))*CoefArray[1];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes+1))*CoefArray[2];
TempNum+=(float)((unsigned char)*(lpPtr-1))*CoefArray[3];
TempNum+=(float)((unsigned char)*lpPtr)*CoefArray[4];
TempNum+=(float)((unsigned char)*(lpPtr+1))*CoefArray[5];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes-1))*CoefArray[6];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes))*CoefArray[7];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes+1))*CoefArray[8];
//最后乘以系數
TempNum*=coef;
//注意對溢出點的處理
if(TempNum>255.0) *lpTempPtr=(BYTE)255;
else if(TempNum<0.0)
*lpTempPtr=(unsigned char)fabs(TempNum);
else *lpTempPtr=(BYTE)TempNum;
}/////////horz
///////////////////////////////vert
if(Type == 1)
{
for(i=0;i<9;i++)
{
CoefArray[i] = Template_Horz_Sobel_Vert[i];
}
////////////////////////////////////////
for(y=1;y<bi.biHeight-1;y++) //注意y的范圍是從1到bi.biHeight-2
for(x=1;x<bi.biWidth-1;x++)
{ //注意x的范圍是從1到bi.biWidth-2
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
lpTempPtr=(char*)lpTempImgData+(BufSize-LineBytes-y*LineBytes)+x;
TempNum=(float)((unsigned char)*(lpPtr+LineBytes-1))*CoefArray[0];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes))*CoefArray[1];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes+1))*CoefArray[2];
TempNum+=(float)((unsigned char)*(lpPtr-1))*CoefArray[3];
TempNum+=(float)((unsigned char)*lpPtr)*CoefArray[4];
TempNum+=(float)((unsigned char)*(lpPtr+1))*CoefArray[5];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes-1))*CoefArray[6];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes))*CoefArray[7];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes+1))*CoefArray[8];
//最后乘以系數
TempNum*=coef;
//注意對溢出點的處理
if(TempNum>255.0) *lpTempPtr=(BYTE)255;
else
{
if(TempNum<0.0)
TempNum=fabs(TempNum);
curColor =*lpTempPtr;
if((BYTE)TempNum>curColor)
{
*lpTempPtr=(BYTE)TempNum;
}
}
}/////////vert
for(i=0;i<9;i++)
{
CoefArray[i] = Template_M1_Sobel[i];
}
////////////////////////////////////////
for(y=1;y<bi.biHeight-1;y++) //注意y的范圍是從1到bi.biHeight-2
for(x=1;x<bi.biWidth-1;x++)
{ //注意x的范圍是從1到bi.biWidth-2
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
lpTempPtr=(char*)lpTempImgData+(BufSize-LineBytes-y*LineBytes)+x;
TempNum=(float)((unsigned char)*(lpPtr+LineBytes-1))*CoefArray[0];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes))*CoefArray[1];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes+1))*CoefArray[2];
TempNum+=(float)((unsigned char)*(lpPtr-1))*CoefArray[3];
TempNum+=(float)((unsigned char)*lpPtr)*CoefArray[4];
TempNum+=(float)((unsigned char)*(lpPtr+1))*CoefArray[5];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes-1))*CoefArray[6];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes))*CoefArray[7];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes+1))*CoefArray[8];
//最后乘以系數
TempNum*=coef;
//注意對溢出點的處理
if(TempNum>255.0) *lpTempPtr=(BYTE)255;
else
{
if(TempNum<0.0)
TempNum=fabs(TempNum);
curColor =*lpTempPtr;
if((BYTE)TempNum>curColor)
{
*lpTempPtr=(BYTE)TempNum;
}
}
}/////////m1
for(i=0;i<9;i++)
{
CoefArray[i] = Template_M3_Sobel[i];
}
////////////////////////////////////////
for(y=1;y<bi.biHeight-1;y++) //注意y的范圍是從1到bi.biHeight-2
for(x=1;x<bi.biWidth-1;x++)
{ //注意x的范圍是從1到bi.biWidth-2
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
lpTempPtr=(char*)lpTempImgData+(BufSize-LineBytes-y*LineBytes)+x;
TempNum=(float)((unsigned char)*(lpPtr+LineBytes-1))*CoefArray[0];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes))*CoefArray[1];
TempNum+=(float)((unsigned char)*(lpPtr+LineBytes+1))*CoefArray[2];
TempNum+=(float)((unsigned char)*(lpPtr-1))*CoefArray[3];
TempNum+=(float)((unsigned char)*lpPtr)*CoefArray[4];
TempNum+=(float)((unsigned char)*(lpPtr+1))*CoefArray[5];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes-1))*CoefArray[6];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes))*CoefArray[7];
TempNum+=(float)((unsigned char)*(lpPtr-LineBytes+1))*CoefArray[8];
//最后乘以系數
TempNum*=coef;
//注意對溢出點的處理
if(TempNum>255.0) *lpTempPtr=(BYTE)255;
else
{
if(TempNum<0.0)
TempNum=fabs(TempNum);
curColor =*lpTempPtr;
if((BYTE)TempNum>curColor)
{
*lpTempPtr=(BYTE)TempNum;
}
}
}//////M3
}
///////////////////
hDc=GetDC(hWnd);
if(hBitmap!=NULL)
DeleteObject(hBitmap);
if(!(hBitmap=CreateDIBitmap(hDc,(LPBITMAPINFOHEADER)lpTempImgData,(LONG)CBM_INIT,(LPSTR)lpTempImgData+sizeof(BITMAPINFOHEADER)+NumColors*sizeof(RGBQUAD),(LPBITMAPINFO)lpTempImgData,DIB_RGB_COLORS)))
MessageBox(hWnd,"CreateBitmap Failed!","Warning!",MB_OK);
memcpy(lpImgData,lpTempImgData,BufSize);
ReleaseDC(hWnd,hDc);
LocalUnlock(hTempImgData);
LocalFree(hTempImgData);
GlobalUnlock(hImgData);
return TRUE;
}
point load_bmp_file::FindCenter()
{
DWORD OffBits,BufSize,LineBytes;
LPBITMAPINFOHEADER lpImgData;
LPSTR lpPtr;
LONG x,y;
BYTE curColor;
point Center;
Center.x = Center.y =0;
int *NumInLine = new int[bi.biHeight];
int *NumInRow = new int[bi.biWidth];
for(x=0;x<bi.biHeight;x++)
NumInLine[x] = 0;
for(x=0;x<bi.biWidth;x++)
NumInRow[x] = 0;
OffBits=bf.bfOffBits-sizeof(BITMAPFILEHEADER);
LineBytes =(DWORD)WIDTHBYTES(bi.biWidth*bi.biBitCount);
BufSize=OffBits+bi.biHeight*LineBytes;
lpImgData=(LPBITMAPINFOHEADER)GlobalLock(hImgData);
lpPtr=(char *)lpImgData;
///////////////////////////////////////////////////
for(y=1;y<bi.biHeight-1;y++) //注意y的范圍是從1到bi.biHeight-2
for(x=1;x<bi.biWidth-1;x++)
{ //注意x的范圍是從1到bi.biWidth-2
lpPtr=(char *)lpImgData+(BufSize-LineBytes-y*LineBytes)+x;
curColor = *lpPtr;
if(curColor<100)
{
NumInLine[y]++;
NumInRow [x]++;
}
}
int WindowHeight =10;
int MaxNum=-1,Pos=0,NumCount=0;
for(y=WindowHeight/2+1;y<bi.biHeight-WindowHeight/2;y++)
{
NumCount = 0;
for(x=0;x<WindowHeight;x++)
NumCount += NumInLine[y-WindowHeight/2+x];
if(NumCount > MaxNum)
{
MaxNum = NumCount;
Pos = y;
}
}
Center.y = Pos;
MaxNum = -1; Pos = 0;
for(x=WindowHeight/2;x<bi.biWidth-WindowHeight/2;x++)
{
NumCount = 0;
for(y=0;y<WindowHeight;y++)
NumCount += NumInRow[x-WindowHeight/2+y];
if(NumCount >MaxNum)
{
MaxNum = NumCount;
Pos = x;
}
}
Center.x = Pos;
GlobalUnlock(hImgData);
delete [] NumInLine;
delete [] NumInRow;
return Center;
}
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