private static void Example()
{
NumberImage[] number = new NumberImage[50];
int countOfCorrectlyRecognized = 0;
LoadAndSaveData.GetInstance().LoadNS(NN);
for (int order = 0; order < 5; order++)
{
for (int num = 0; num < 10; num++)
{
number[order * 10 + num] = LoadAndSaveData.GetInstance().LoadNumberImage(num, order);
int answer = NN.GetAnswer(number[order * 10 + num].GetPixels());
Console.WriteLine(order + "" + num + ".png = " + answer);
if (num == answer)
{
countOfCorrectlyRecognized++;
}
}
Console.WriteLine();
}
Console.WriteLine((double)countOfCorrectlyRecognized / 50 * 100 + "%\n");
}
public NumberImage[] LoadDataMNIST(string pixelFile, string labelFile, int numImages = 1000)
{
NumberImage[] result = new NumberImage[numImages];
FileStream pixelsStream = new FileStream(pixelFile, FileMode.Open);
FileStream labelsStream = new FileStream(labelFile, FileMode.Open);
BinaryReader brImages = new BinaryReader(pixelsStream);
BinaryReader brLabels = new BinaryReader(labelsStream);
var magicNumber1 = brImages.ReadInt32();
var numberoOfImages = brImages.ReadInt32();
var numberOfRows = brImages.ReadInt32();
int numberOfColumns = brImages.ReadInt32();
int magicNumber2 = brLabels.ReadInt32();
int numberOfItems = brLabels.ReadInt32();
double[][] pixels = new double[28][];
for (int i = 0; i < pixels.Length; ++i)
{
pixels[i] = new double[28];
}
for (int k = 0; k < numImages; ++k)
{
for (int i = 0; i < 28; ++i)
{
for (int j = 0; j < 28; ++j)
{
double byteOnPixel = brImages.ReadByte();
pixels[i][j] = byteOnPixel / 255;
}
}
byte label = brLabels.ReadByte();
NumberImage dImage = new NumberImage(28, 28, pixels, label);
result[k] = dImage;
}
pixelsStream.Close();
labelsStream.Close();
brImages.Close();
brLabels.Close();
return(result);
}
