private static void GenerateGarbageData(EncogOCR_SketchData[] sketches, int outputSize, List<double[]> inputs, List<double[]> outputs)
{
#region validate
#if DEBUG
if (sketches.Select(o => o.BitmapColors.Width).Distinct().Count() != 1 || sketches.Select(o => o.BitmapColors.Height).Distinct().Count() != 1)
{
throw new ApplicationException("Stored images are different sizes");
}
#endif
#endregion
double[] zeroOutput = Enumerable.Range(0, outputSize).Select(o => 0d).ToArray();
#region efficient if only a final is needed
//Color[][] colors = sketches.
// Select(o => o.BitmapColors.GetColors(0, 0, o.Bitmap.PixelWidth, o.Bitmap.PixelHeight)).
// ToArray();
//bool[] isBlack = Enumerable.Range(0, colors[0].Length).
// AsParallel().
// Select(o => new { Index = o, IsBlack = colors.Any(p => p[o].A > 200 && Math3D.Avg(p[o].R, p[o].G, p[o].B) < 20) }).
// OrderBy(o => o.Index).
// Select(o => o.IsBlack).
// ToArray();
#endregion
// Figure out which pixels of each sketch are black
bool[][] isBlack = sketches.
Select(o => o.BitmapColors.GetColors(0, 0, o.BitmapColors.Width, o.BitmapColors.Height)).
Select(o => o.Select(p => p.A > 200 && Math1D.Avg(p.R, p.G, p.B) < 20).ToArray()).
ToArray();
// Or the images together
bool[] composite = Enumerable.Range(0, isBlack[0].Length).
AsParallel().
Select(o => new { Index = o, IsBlack = isBlack.Any(p => p[o]) }).
OrderBy(o => o.Index).
Select(o => o.IsBlack).
ToArray();
#region Blank sketch
double[] percentBlack = isBlack.
Select(o => o.Sum(p => p ? 1d : 0d) / o.Length).
ToArray();
if (percentBlack.All(o => o > .01))
{
// None of the inputs are blank, so make blank a garbage state
inputs.Add(Enumerable.Range(0, composite.Length).Select(o => 0d).ToArray());
outputs.Add(zeroOutput);
}
#endregion
#region Inverted sketch
// Making this, because the assumption is that if they draw in a region outside any of the inputs, then it should be a zero output
inputs.Add(composite.Select(o => o ? 0d : 1d).ToArray());
outputs.Add(zeroOutput);
#endregion
//TODO: Do a few subsets of inverted
}
