private static ImageShapeContext CreateShapeContext(string path, string fontFamily, int samplecount, char c)
{
MyTimer timer = new MyTimer();
Font font = new Font(fontFamily, 240);
string file = Path.Combine(path, String.Format("{0}-{1}.bmp", fontFamily, c));
string fontpath = Path.Combine(path, fontFamily);
Image<Bgr, Byte> img = new Image<Bgr, byte>(400, 400);
using (Graphics g = Graphics.FromImage(img.Bitmap)) {
g.Clear(Color.Black);
g.DrawString(c.ToString(), font, Brushes.White, 0, 0);
}
timer.Restart();
var canny = img.Convert<Gray, Byte>().Canny(new Gray(100), new Gray(60));
timer.StopAndSay("Canny");
timer.Restart();
List<Point> edge = new List<Point>();
for (int y = 0; y < canny.Height; ++y) {
for (int x = 0; x < canny.Width; ++x) {
if (canny[y, x].Intensity > 0) {
edge.Add(new Point(x, y));
}
}
}
var sample = edge.Sample(samplecount);
timer.StopAndSay("Sample");
using (var sw = new StreamWriter(Path.Combine(path, String.Format("!Sample-{0}-{1}.txt", fontFamily, c)))) {
foreach (var p in sample) {
sw.WriteLine("{0},{1}", p.X, p.Y);
}
}
timer.Restart();
double min, max;
var norm = Jim.OCR.Algorithms.ShapeContext.Normalize(sample, out min, out max);
timer.StopAndSay("Normalize");
timer.Restart();
var scs = new ImageShapeContext(sample);
for (int i = 0; i < norm.Length; ++i) {
scs.ShapeContests[i] = new Jim.OCR.Algorithms.ShapeContext(norm[i]);
//var his = sc.Histogram.ToImage();
var p = sample[i];
//string hisfile = Path.Combine(fontpath, string.Format("[{0},{1}].bmp", p.X, p.Y));
//his.Save(hisfile);
img[p] = new Bgr(0, 0, 255);
}
timer.StopAndSay("ShapeContext");
//foreach (var p in sample) {
// var sc = new ShapeContext(p, sample);
// var his = sc.Histogram.ToImage();
// string hisfile = Path.Combine(fontpath, string.Format("[{0},{1}].bmp", p.X, p.Y));
// his.Save(hisfile);
// img[p] = new Bgr(0, 0, 255);
//}
//var contours = img.Convert<Gray, Byte>().FindContours();
//img.Draw(contours, new Bgr(0, 0, 255), new Bgr(0, 255, 0), 2, 1);
//dfsContour(img, contours, 0, 2);
//foreach (var ii in contours.) {
// //Console.WriteLine
// img[ii] = new Bgr(0, 0, 255);
//}
//img.Save(file);
return scs;
}
private static void MatchShapeContext(string path, string fa, string fb, char c)
{
MyTimer timer = new MyTimer();
Console.WriteLine("Doing...{0}", c);
var sca = CreateShapeContext(path, fa, 100, c);
var scb = CreateShapeContext(path, fb, 100, c);
var match = new ShapeContextMatching(sca.ShapeContests, scb.ShapeContests);
timer.Restart();
match.BuildCostGraph();
timer.StopAndSay("Build Graph");
timer.Restart();
var km = match.Match();
timer.StopAndSay("Match");
Console.WriteLine("Match Result:{0}", km.MatchResult);
int ax = (int)sca.Points.Average(p => p.X),
ay = (int)sca.Points.Average(p => p.Y),
bx = (int)scb.Points.Average(p => p.X),
by = (int)scb.Points.Average(p => p.Y);
int dx = bx - ax,
dy = by - ay;
int scale = 4;
Image<Bgr, Byte> img = new Image<Bgr, byte>(400 * scale, 400 * scale);
string scdir = Path.Combine(path, c.ToString());
if (Directory.Exists(scdir)) Directory.Delete(scdir, true);
Directory.CreateDirectory(scdir);
Font fs = new Font("Arial", 12);
using (Graphics g = Graphics.FromImage(img.Bitmap)) {
g.Clear(Color.Black);
Font font1 = new Font(fa, 240 * scale);
Font font2 = new Font(fb, 240 * scale);
g.DrawString(c.ToString(), font1, new SolidBrush(Color.FromArgb(30, 255, 0, 0)), new Point(0, 0));
g.DrawString(c.ToString(), font2, new SolidBrush(Color.FromArgb(30, 0, 255, 0)), new Point(-dx * scale, -dy * scale));
for (int j = 0; j < scb.Points.Count; ++j) {
int i = km.MatchPair[j + sca.Points.Count];
Point pb = scb.Points[j], pa = sca.Points[i];
pb.X -= dx;
pb.Y -= dy;
int r = 3;
g.DrawEllipse(Pens.Red, pa.X * scale - r, pa.Y * scale - r, r * 2 + 1, r * 2 + 1);
g.DrawEllipse(Pens.Green, pb.X * scale - r, pb.Y * scale - r, r * 2 + 1, r * 2 + 1);
g.DrawLine(Pens.Gray, new Point(pa.X * scale, pa.Y * scale), new Point(pb.X * scale, pb.Y * scale));
Point ps = new Point(pa.X * scale, pa.Y * scale);
g.DrawString(i.ToString(), fs, Brushes.White, ps);
string hisa = Path.Combine(scdir, String.Format("{0}-{1}.bmp", i, fa));
string hisb = Path.Combine(scdir, String.Format("{0}-{1}.bmp", i, fb));
sca.ShapeContests[i].Histogram.ToImage().Save(hisa);
scb.ShapeContests[j].Histogram.ToImage().Save(hisb);
}
}
img.Save(Path.Combine(path, String.Format("{0}-{1}-{2}.bmp", fa, fb, c)));
}
