C / C++ / MFC

vector<int>  CPanoCylinderImage::RGBofPixel(CImage image, int x, int y)
{ 
    vector<int> vect; 
    COLORREF cr = image.GetPixel(x, y); 
    BYTE r = GetRValue(cr); 
    BYTE g = GetGValue(cr); 
    BYTE b = GetBValue(cr); 

    vect.push_back((int)r); 
    vect.push_back((int)g); 
    vect.push_back((int)b); 

    return vect; 
} 

float CPanoCylinderImage::IntensityOfPixel(CImage image, int x, int y)
{ 
    vector<int> vect = RGBofPixel(image, x, y); 
    return 0.30f * vect.at(0) + 0.59f * vect.at(1) + 0.11f * vect.at(2); 
} 

float CPanoCylinderImage::LuminanceDifference(CImage image1, CImage image2, int length) 
{ 
    float diff = 0.0; 
    float sum = 0.0; 
    float intensity = 0.0; 
    vector<float> vectImage1, vectImage2; 
    //Calculate intensity
    for(int i = 0; i < image1.GetHeight(); i++) 
    { 
        for(int j = image1.GetWidth() - length; j < image1.GetWidth(); j++) 
        { 
            intensity = IntensityOfPixel(image1, j, i); 
            vectImage1.push_back(intensity); 
        } 
    } 
    //............ 

    return /*...*/; 
} 

CImage imageOriginal;<br />
imageOriginal.Load(_T( "read.tif" ));<br />
<br />
// Here is the rect that we will copy from the original image (in this case 1/4 of it)<br />
//CRect rectCopy(0, 0, imageOriginal.GetWidth() / 2, imageOriginal.GetHeight() / 2);<br />
<br />
CRect rectCopy(9177,68, 10566, 635);<br />
<br />
// Make a copy of the specific part<br />
CImage imageNew;<br />
imageNew.Create(rectCopy.Width(), rectCopy.Height(), imageOriginal.GetBPP());<br />
imageOriginal.BitBlt(imageNew.GetDC(), rectCopy, rectCopy.TopLeft());<br />
imageNew.Save(_T("D://imgnew.jpg"));<br />
<br />
imageNew.ReleaseDC();