不知道YCrCb数据和奇场，偶场的关系，搞了半天没搞出来。
下面是我写的程序,720*525，数据放在szBMPData里了。
FILE *file;
int i,j;
double Y0,Y1,Cr,Cb;
BYTE byWrite[6];
double fWrite[6];
file = fopen(dlg.GetPathName(),"r+");
nSeekPos = 54;
byWrite[2] = 0;
fseek(file,nSeekPos,SEEK_SET);
for(i=0;i<525;i++)
{
for(j=0;j<360;j++)
{
//byWrite[0] = m_szBMPData[i*1440 + 1440 - j*2-1];
//byWrite[1] = m_szBMPData[i*1440 + 1440 - j*2];
Y0 = m_szBMPData[i*1440 + 1440 - j*4];
Y1 = m_szBMPData[i*1440 + 1440 - j*4-2];
Cb = m_szBMPData[i*1440 + 1440 - j*4-1];
Cr = m_szBMPData[i*1440 + 1440 - j*4-3];
/*Cr = m_szBMPData[i*1440 + 1440 - j*4];
Cb = m_szBMPData[i*1440 + 1440 - j*4-2];
Y0 = m_szBMPData[i*1440 + 1440 - j*4-1];
Y1= m_szBMPData[i*1440 + 1440 - j*4-3];*/
/*
C = Y - 16;
D = U - 128;U (Cb)
E = V - 128;V (Cr)
R = clip( round( 1.164383 * C + 1.596027 * E ) )
G = clip( round( 1.164383 * C - (0.391762 * D) - (0.812968 * E) ) )
B = clip( round( 1.164383 * C + 2.017232 * D ) )
*/
fWrite[2]=1.164383*(Y0-16)+1.596027*(Cr-128);//r
fWrite[1]=1.164383*(Y0-16)-0.812968*(Cr-128)-0.391762*(Cb-128);//G
fWrite[0]=1.164383*(Y0-16)+1.596027*(Cr-128);//B
fWrite[5]=1.164383*(Y1-16)+1.596027*(Cr-128);//r
fWrite[4]=1.164383*(Y1-16)-0.812968*(Cr-128)-0.391762*(Cb-128);//G
fWrite[3]=1.164383*(Y1-16)+1.596027*(Cr-128);//B
for(int k=0;k<6;k++)
{
byWrite[k] = (BYTE)fWrite[k];
}
if(!feof(file))
{
fwrite(byWrite,6,1,file);
}
else
{
break;
}
}
}
fclose(file);
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