public static extern void ShowYellow(IntPtr rgba8Source, IntPtr rgba8Dest, int width, int height, YellowConfig config, byte r, byte g, byte b, byte a);
public static extern void FindAppearancesOfBarCodeInterestsInBitmap(IntPtr rgba8, int width, int height, YellowConfig yellowConfig, int maxYellowSpacing, IntPtr barCodeFindContextArray, ulong barCodeFindContextArrayCount, IntPtr barCodeFindTemporaryMemory);
static void Main(string[] args)
{
Console.WriteLine(Environment.CurrentDirectory);
string path;
string colorString;
if (args.Length < 1)
{
Console.WriteLine("Enter the path to the source image:");
path = Console.ReadLine();
}
else
{
path = args[0];
}
if (args.Length < 2)
{
Console.WriteLine("Enter the BarCode to find in the image, with each character representing a color\n[For example: RGBGGRBRGB]:");
colorString = Console.ReadLine();
}
else
{
colorString = args[1];
}
BarCode toFind;
try
{
toFind = ParseBarCode(colorString);
}
catch (FormatException fe)
{
Console.WriteLine("Failed to parse the BarCode string due to a FormatException:\n" + fe);
Environment.Exit(-1);
}
//TODO: Tune this YellowConfig for your environment
YellowConfig yellowConfig = new YellowConfig()
{
maxRedGreenSeparation = 45, minRedBlueSeparation = 50, minRed = 170
};
BarCodeFinder.BarCodeFinder finder = new BarCodeFinder.BarCodeFinder();
BarCodeFindContextArray arr = new BarCodeFindContextArray(new BarCode[] { toFind }, 0.1f, 8, 6400);
//Load the image
Bitmap srcImg = new Bitmap(path);
//Get its pixels
var data = srcImg.LockBits(new Rectangle(0, 0, srcImg.Width, srcImg.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
//Convert to RGBA (from BGRA - since we are on little endian)
BitmapHelper.ConvertFromBGRAToRGBA(data.Scan0, data.Scan0, data.Width, data.Height);
//Find the BarCodeAppearances
finder.Find(data.Scan0, data.Width, data.Height, yellowConfig, arr, 2);
yellowConfig.Show(data.Scan0, data.Width, data.Height, Color.Green);
//Convert back to BGRA
BitmapHelper.ConvertFromRGBAToBGRA(data.Scan0, data.Scan0, data.Width, data.Height);
srcImg.UnlockBits(data);
//Get the BarCodeFindContext
var findContext = arr[0];
//Generate the output image
const int metadataHeight = 75;
Bitmap dstImg = new Bitmap(srcImg.Width, srcImg.Height + metadataHeight, PixelFormat.Format32bppArgb);
using (Graphics g = Graphics.FromImage(dstImg))
{
//Draw the background image
g.DrawImage(srcImg, 0, 0, srcImg.Width, srcImg.Height);
//Draw a bar for the metadata
g.FillRectangle(Brushes.Black, 0, srcImg.Height, dstImg.Width, metadataHeight);
float highestMatch = float.NaN;
BarCodeAppearance highestAppearance = default(BarCodeAppearance);
foreach (var appearance in findContext)
{
g.DrawRectangle(Pens.Yellow, appearance.FirstBox);
g.DrawRectangle(Pens.Yellow, appearance.SecondBox);
g.DrawLine(Pens.Red, appearance.ColorStart, appearance.ColorEnd);
PointF scoreLabelPos = new PointF((appearance.ColorStart.X + appearance.ColorEnd.X) / 2, (appearance.ColorStart.Y + appearance.ColorEnd.Y) / 2);
g.DrawString(appearance.MatchScore.ToString("0.000f"), new Font(FontFamily.GenericSerif, 13), Brushes.Red, scoreLabelPos);
if (appearance.MatchScore > highestMatch || float.IsNaN(highestMatch))
{
highestMatch = appearance.MatchScore;
highestAppearance = appearance;
}
}
if (!float.IsNaN(highestMatch))
{
g.DrawLine(Pens.Blue, highestAppearance.ColorStart, highestAppearance.ColorEnd);
g.DrawRectangle(Pens.Cyan, highestAppearance.FirstBox);
g.DrawRectangle(Pens.Cyan, highestAppearance.SecondBox);
}
string metadata = "[" + colorString + "] - " + (findContext.Count) + " appearances (highest match score: " + highestMatch.ToString("0.000") + ")";
g.DrawString(metadata, new Font(FontFamily.GenericSerif, 17), Brushes.White, new PointF(50, srcImg.Height));
}
//Save the labeled image
string dstPath = path + ".labeled.png";
dstImg.Save(dstPath);
Console.WriteLine("Saved labeled image to " + dstPath);
}
