private void trackBar2_ValueChanged(object sender, EventArgs e)
{
if (!checkBox1.Checked)
{
return;
}
int crop = trackBar3.Value;
var searchBmp = searchBmp2.Clone(new Rectangle(crop, crop, searchBmp2.Width - crop * 2, searchBmp2.Height - crop * 2),
searchBmp2.PixelFormat);
LockBitmap.LockBitmap lockSearchBitmap;
var bitmap = new Bitmap(trackBar4.Value, trackBar4.Value);
using (var g = Graphics.FromImage(bitmap))
{
g.InterpolationMode = InterpolationMode.NearestNeighbor;
g.DrawImage(searchBmp, 0, 0, bitmap.Width, bitmap.Height);
//g.DrawImage(searchBmp,
// new Rectangle(0, 0, bitmap.Width, bitmap.Height),
// new Rectangle(0, 0, trackBar4.Value, trackBar4.Value),
// GraphicsUnit.Pixel);
lockSearchBitmap = new LockBitmap.LockBitmap(bitmap);
lockSearchBitmap.UnlockBits();
pictureBox2.Left = pictureBox1.Left + trackBar1.Value;
pictureBox2.Top = pictureBox1.Top + trackBar2.Value;
}
pictureBox2.Image = bitmap;
double percent = 0;
double colorpercent = 0;
for (var x1 = 0; x1 < lockSearchBitmap.Width; x1++)
{
for (var y1 = 0; y1 < lockSearchBitmap.Height; y1++)
{
var pixelA = sourceBmp2.GetPixel(x1 + trackBar1.Value, y1 + trackBar2.Value);
var pixelB = lockSearchBitmap.GetPixel(x1, y1);
percent +=
((Math.Abs(pixelA.R - pixelB.R)
+ Math.Abs(pixelA.G - pixelB.G)
+ Math.Abs(pixelA.B - pixelB.B)));
colorpercent += Math.Max(Math.Max(Math.Abs(pixelA.R - pixelB.R), Math.Abs(pixelA.G - pixelB.G)),
Math.Abs(pixelA.B - pixelB.B));
}
}
percent /= 255f * 3 * lockSearchBitmap.Width * lockSearchBitmap.Height;
colorpercent /= 255f * lockSearchBitmap.Width * lockSearchBitmap.Height;
Text = $"x:{trackBar1.Value} y:{trackBar2.Value} size:{trackBar4.Value} crop:{crop} percent:{percent} colorpercent:{colorpercent}";
}
public static void bitmapToGrayscale(Bitmap bm)
{
double coefR = 0.21,
coefG = 0.71,
coefB = 0.07;
using (var lb = new LockBitmap.LockBitmap(bm))
{
for (var y = 0; y < lb.Height; y++)
{
for (var x = 0; x < lb.Width; x++)
{
var color = lb.GetPixel(x, y);
var intensity = (int)(coefR * color.R + coefG * color.G + coefB * color.B);
var newColor = Color.FromArgb(intensity, intensity, intensity);
lb.SetPixel(x, y, newColor);
}
}
}
}
public static double[] scale(Bitmap bmp, double scaleFrom, double scaleTo)
{
var res = new double[bmp.Height * bmp.Width];
using (var lb = new LockBitmap.LockBitmap(bmp))
{
var i = 0;
for (var y = 0; y < lb.Height; y++)
{
for (var x = 0; x < lb.Width; x++)
{
var color = lb.GetPixel(x, y);
var value = colorToGrayscale(color);
var scaledValue = value * (scaleTo - scaleFrom) / 255 + scaleFrom;
res[i] = scaledValue;
++i;
}
}
}
return(res);
}
public void CachedBitmapPixelsSpeedTest()
{
var stopWatch = new Stopwatch();
const int mulTimes = 100;
int dummySum = 0;
var bitmap = new Bitmap(500, 500);
stopWatch.Start();
for (int mul = 0; mul < mulTimes; mul++)
{
for (int x = 0; x < bitmap.Width; x++)
{
for (int y = 0; y < bitmap.Height; y++)
{
var pixel = bitmap.GetPixel(x, y);
dummySum += pixel.A + pixel.R + pixel.G + pixel.B;
}
}
}
stopWatch.Stop();
var bitmapTime = stopWatch.Elapsed;
using (var lockBitmap = new LockBitmap.LockBitmap(bitmap))
{
stopWatch.Restart();
for (int mul = 0; mul < mulTimes; mul++)
{
for (int x = 0; x < lockBitmap.Width; x++)
{
for (int y = 0; y < lockBitmap.Height; y++)
{
var pixel = lockBitmap.GetPixel(x, y);
dummySum += pixel.A + pixel.R + pixel.G + pixel.B;
}
}
}
stopWatch.Stop();
}
var lockBitmapTime = stopWatch.Elapsed;
var cachedBitmap = new CachedBitmapPixels(bitmap);
stopWatch.Restart();
for (int mul = 0; mul < mulTimes; mul++)
{
for (int x = 0; x < cachedBitmap.Width; x++)
{
for (int y = 0; y < cachedBitmap.Height; y++)
{
var pixel = cachedBitmap[x, y];
dummySum += pixel.A + pixel.R + pixel.G + pixel.B;
}
}
}
stopWatch.Stop();
var cachedBitmapTime = stopWatch.Elapsed;
var cachedBitmapArray = new CachedBitmapPixels(bitmap);
stopWatch.Restart();
for (int mul = 0; mul < mulTimes; mul++)
{
var pixels = cachedBitmapArray.CacheAll();
for (int x = 0; x < cachedBitmapArray.Width; x++)
{
for (int y = 0; y < cachedBitmapArray.Height; y++)
{
var pixel = pixels[x + y * cachedBitmapArray.Width];
dummySum += pixel.A + pixel.R + pixel.G + pixel.B;
}
}
}
stopWatch.Stop();
var cachedBitmapArrayTime = stopWatch.Elapsed;
Console.WriteLine($"Bitmap time {bitmapTime}");
Console.WriteLine($"LockBitmap time {lockBitmapTime}");
Console.WriteLine($"CachedBitmapTime time {cachedBitmapTime}");
Console.WriteLine($"CachedBitmapArrayTime time {cachedBitmapArrayTime}");
Assert.IsTrue(cachedBitmapTime < bitmapTime && cachedBitmapTime < lockBitmapTime);
Assert.IsTrue(cachedBitmapArrayTime < bitmapTime && cachedBitmapArrayTime < lockBitmapTime);
}
private void button1_Click(object sender, EventArgs e)
{
LockBitmap.LockBitmap sourceBmp;
Bitmap searchBmp;
var dlg = new OpenFileDialog()
{
Title = "Select source bitmap"
};
//dlg.DefaultExt = "*.png";
if (dlg.ShowDialog() != DialogResult.OK)
{
return;
}
try
{
sourceBmp = new LockBitmap.LockBitmap(new Bitmap(dlg.FileName));
sourceBmp.UnlockBits();
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
return;
}
dlg = new OpenFileDialog()
{
Title = "Select bitmap to search"
};;
//dlg.DefaultExt = "*.png";
if (dlg.ShowDialog() != DialogResult.OK)
{
return;
}
try
{
searchBmp = new Bitmap(dlg.FileName);
if (searchBmp.Width != searchBmp.Height)
{
throw new InvalidOperationException("Match bitmap should be square");
}
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
return;
}
int crop;
if (!int.TryParse(textBox2.Text, out crop))
{
MessageBox.Show("Invalid crop value");
return;
}
Task.Run(() =>
{
token = new CancellationTokenSource();
try
{
searchBmp = searchBmp.Clone(new Rectangle(crop, crop, searchBmp.Width - crop * 2, searchBmp.Height - crop * 2),
searchBmp.PixelFormat);
var searchResults = new List <(int x, int y, int size, double percent, double colorpercent)>();
var minSize = 20;
var complete = 0;
var maxcomplete = 0;
for (int i = minSize; i < searchBmp.Width; i++)
{
maxcomplete += (searchBmp.Width - i) * (searchBmp.Height - i);
}
maxcomplete *= searchBmp.Width - minSize;
Parallel.For(minSize, searchBmp.Width, i =>
{
LockBitmap.LockBitmap lockSearchBitmap;
using (var bitmap = new Bitmap(i, i))
using (var g = Graphics.FromImage(bitmap))
{
g.InterpolationMode = InterpolationMode.NearestNeighbor;
lock (searchBmp)
{
g.DrawImage(searchBmp, 0, 0, bitmap.Width, bitmap.Height);
//g.DrawImage(searchBmp, new Rectangle(0, 0, i, i), new Rectangle(0, 0, bitmap.Width, bitmap.Height),
// GraphicsUnit.Pixel);
lockSearchBitmap = new LockBitmap.LockBitmap(bitmap);
lockSearchBitmap.UnlockBits();
}
}
Parallel.For(0, sourceBmp.Width - lockSearchBitmap.Width, x =>
{
Invoke((Action)(() => Text = $"{complete / (double)maxcomplete}"));
Parallel.For(0, sourceBmp.Height - lockSearchBitmap.Height, y =>
{
Interlocked.Increment(ref complete);
token.Token.ThrowIfCancellationRequested();
double percent = 0;
double colorpercent = 0;
for (var x1 = 0; x1 < lockSearchBitmap.Width; x1++)
{
for (var y1 = 0; y1 < lockSearchBitmap.Height; y1++)
{
var pixelA = sourceBmp.GetPixel(x1 + x, y1 + y);
var pixelB = lockSearchBitmap.GetPixel(x1, y1);
percent +=
((Math.Abs(pixelA.R - pixelB.R)
+ Math.Abs(pixelA.G - pixelB.G)
+ Math.Abs(pixelA.B - pixelB.B)));
colorpercent += Math.Max(Math.Max(Math.Abs(pixelA.R - pixelB.R), Math.Abs(pixelA.G - pixelB.G)),
Math.Abs(pixelA.B - pixelB.B));
}
}
percent /= 255f * 3 * lockSearchBitmap.Width * lockSearchBitmap.Height;
colorpercent /= 255f * lockSearchBitmap.Width * lockSearchBitmap.Height;
lock (searchResults)
searchResults.Add((x, y, i, percent, colorpercent));
});
});
});
Invoke((Action)(() =>
textBox1.Text = string.Join(Environment.NewLine,
searchResults.OrderBy(x => x.Item4).Select(x => $"x:{x.x} y:{x.y} size:{x.size} percent:{x.percent} colorpercent:{x.colorpercent}"))));
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
});
}