public static IEnumerable <FaceDetectionEntry> LoadDataset(string datasetPath, int width, int height, int n = -1)
{
var result = new ConcurrentBag <FaceDetectionEntry>();
var fileNames = Directory.EnumerateFiles(Path.Combine(datasetPath, "faces"), "*.pgm");
if (n != -1)
{
fileNames = fileNames.Take(n);
}
Parallel.ForEach(fileNames, filename =>
// foreach (var filename in fileNames)
{
Console.Write(".");
var data = new float[width * height];
var pgm = PgmImage.LoadImage(filename);
var image = PgmImage.MakeBitmap(pgm);
BitmapTool.ExtractData(width, height, data, image);
result.Add(new FaceDetectionEntry {
IsFace = true, ImageData = data, Filename = filename
});
}
);
return(result);
}
private Bitmap GetImage(string filename)
{
if (filename.Contains("pgm"))
{
return(PgmImage.MakeBitmap(PgmImage.LoadImage(filename)));
}
return((Bitmap)Image.FromFile(filename));
}
