static Tuple <int, int, int> BestLight(SimpleBitmap pic, int area)
{
int bestX = 0;
int bestY = 0;
int bestV = 0;
for (int y = 0; y < pic.height - area; y++)
{
for (int x = 0; x < pic.width - area; x++)
{
int v = 0;
for (int cy = 0; cy < area; cy++)
{
for (int cx = 0; cx < area; cx++)
{
int pix = pic.pixel[x + cx + (y + cy) * pic.width];
v += pix & 0xff;
v += (pix >> 8) & 0xff;
v += (pix >> 16) & 0xff;
}
}
if (v > bestV)
{
bestX = x;
bestY = y;
bestV = v;
}
}
}
return(new Tuple <int, int, int>(bestX + area / 2, bestY + area / 2, bestV));
}
/// <summary>
/// Testmethode zum auslesen der Helligkeit in Fotos
/// </summary>
static void TestBright()
{
foreach (var file in new DirectoryInfo(TestPhotos + "\\Blue").GetFiles("*.JPG"))
{
Console.Write("{0} ({1:N1} kByte) ", file.Name, file.Length / 1024.0);
var pic = Image.FromFile(file.FullName);
var simple = new SimpleBitmap(pic);
var light = BestLight2(simple, 350);
Console.WriteLine("{0} x {1} - val: {2:N0}", light.Item1, light.Item2, light.Item3);
}
}
/// <summary>
/// erstellt ein neues Simplebitmap anhand eines vorhandenen Bildes
/// </summary>
/// <param name="image">Bild, welches ausgelesen werden soll</param>
/// <returns>fertig erstelltes SimpleBitmap</returns>
public static SimpleBitmap ToSimpleBitmap(this Image image)
{
return(SimpleBitmap.FromImage(image));
}