private void btnTestImage_Click(object sender, EventArgs e)
{
Bitmap temp = OpenDialogLoadImage.OpenDialog(picboxImageSource);
if (temp != null)
{
try
{
BitmapHelper bmHelp = new BitmapHelper(temp);
bmHelp.Binarization(160, true); // giống vs ngưỡng trong file ImageData.cs -- đặt cùng ngưỡng để chuyển thành ảnh nhị phân
MyDrawing.DrawBinarization(bmHelp.ToBinaryArray(),picBinary,temp.Width,temp.Height);
lbResult.Text = "Result: " + Cal(bmHelp.ToBinaryArray());
}
catch (Exception ex) { };
}
}
public List<TrainingData> ReadFolder(string path)
{
List<TrainingData> data = new List<TrainingData>();
string[] Files = Directory.GetFiles(path);
BitmapHelper temp = null;
foreach (string s in Files)
{
//TrainingData trainData = new TrainingData();
string fileName = Path.GetFileNameWithoutExtension(s);
string Character = fileName.Split('-')[0];
string Font = fileName.Split('-')[2];
byte[] bytes = Encoding.Unicode.GetBytes(Character);
double[] t = new double[16];
for (int i = 0; i < 16; i++)
{
t[i] = BitHelper.GetBit(bytes[(int)i / 8], (byte)(i % 8)) ? 1 : 0;
}
//byte[] b = new byte[2];
//for (int i = 0; i < t.Length; i++)
//{
// b[(int)i/8] = BitHelper.SetBit(b[(int)i / 8], (byte)(i % 8), t[i] == 1.0);
//}
//string a = Encoding.Unicode.GetString(b);
Bitmap bm = new Bitmap(Image.FromFile(s));
temp = new BitmapHelper(bm);
// threshold = 160 default
temp.Binarization(160, true); //
TrainingData td = new TrainingData(temp.ToBinaryArray(), t);
td.C = Character + Font;
td.fileName = fileName;
data.Add(td);
}
return data;
}
//private Bitmap Normalize(Bitmap bm)
//{
// Bitmap ret;
// BitmapData bmDt = bm.LockBits(new Rectangle(0, 0, bm.Width, bm.Height),ImageLockMode.ReadOnly,PixelFormat.Format24bppRgb);
// int offset = bmDt.Stride - bm.Width * 3;
// int top_left_X=0;
// int top_left_Y = 0;
// int bottom_right_X = bm.Width;
// int bottom_right_Y = bm.Height;
// unsafe
// {
// byte* p = (byte*)bmDt.Scan0;
// for (int i = 0; i < bm.Height; i++)
// {
// for (int j = 0; j < bm.Width; j++)
// {
// byte grayscale = (byte)(0.11 * p[0] + 0.59 * p[1] + 0.3 * p[2]);
// if (grayscale >= 127)
// {
// top_left_X = j;
// top_left_Y = i;
// }
// p+=3;
// }
// p+=offset;
// }
// for (int i = bm.Height - 1; i >= 0; i--)
// {
// for (int j = bm.Width; j >= 0; j--)
// {
// p = (byte*)bmDt.Scan0;
// p += (i * (bm.Width * 3 + offset) + j * 3);
// byte grayscale = (byte)(0.11 * p[0] + 0.59 * p[1] + 0.3 * p[2]);
// if (grayscale >= 127)
// {
// bottom_right_X = j;
// bottom_right_Y = i;
// }
// }
// }
// }
//}
private void DrawBinarization(Bitmap bm)
{
//Graphics g = pictureBox1.CreateGraphics();
Bitmap nBM = new Bitmap(pictureBox1.Width, pictureBox1.Height);
Graphics g = Graphics.FromImage(nBM);
g.FillRectangle(Brushes.White, new Rectangle(0, 0, pictureBox1.Width, pictureBox1.Height));
int W = (int)Configuration["Width"];
int H = (int)Configuration["Height"];
BitmapHelper bmh = new BitmapHelper(bm);
bmh.Binarization((byte)Configuration["Threshold"], true);
double[] binaryArray = bmh.ToBinaryArray();
int j = 0;
double ratioX = pictureBox1.Width / W;
double ratioY = pictureBox1.Height / H;
Pen p = new Pen(Brushes.Blue,2.0f);
Font f = new Font("Tahoma",1.0f);
for (int i = 0; i < binaryArray.Length; i++)
{
if (i%W == 0&&i!=0)
{
j++;
}
int RealW = i - j * W;
if (binaryArray[i] > 0)
{
g.FillRectangle(Brushes.Gray, new Rectangle((int)(RealW * ratioX), (int)(j * ratioY), (int)ratioX, (int)ratioY));
g.DrawString("1", f, Brushes.Blue, (int)(RealW * ratioX), (int)(j * ratioY));
//g.DrawRectangle(p, new Rectangle((int)(RealW * ratioX), (int)(j * ratioY), (int)ratioX, (int)ratioY));
}else
{
g.DrawString("0", f, Brushes.Blue, (int)(RealW * ratioX), (int)(j * ratioY));
}
}
pictureBox1.Image = nBM;
}
