public static long[] GetHistogram(this Bitmap imageBitMap)
{
long[] histogram = new long[256];
BitmapData bmData = null;
int bytesPerPixel, heightInPixels, widthInPixels;
try
{
LockImage(imageBitMap, out bmData, out bytesPerPixel, out heightInPixels, out widthInPixels);
unsafe
{
for (int y = 0; y < heightInPixels; y++)
{
for (int x = 0; x < widthInPixels; x += bytesPerPixel)
{
histogram[bmData.GetPixelXY(x, y)]++;
}
}
}
imageBitMap.UnlockBits(bmData);
}
catch
{
try
{
imageBitMap.UnlockBits(bmData);
}
catch
{
}
}
return(histogram);
}
private void csvToolStripMenuItem_Click(object sender, EventArgs e)
{
if (this.ActiveMdiChild == null)
{
MessageBox.Show("First you need open image to export", "You don't choose the image");
return;
}
saveFileDialog1.Filter = "CSV FILES | *.csv";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
((ImageForm)this.ActiveMdiChild).MainImage.Save(saveFileDialog1.FileName, ((ImageForm)this.ActiveMdiChild).MainImage.RawFormat);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Can't open image!");
return;
}
Bitmap bmp = ((ImageForm)this.ActiveMdiChild).MainImage;
BitmapData bmData = null;
int bytesPerPixel, heightInPixels, widthInPixels;
StreamWriter writer = new StreamWriter(Path.GetFullPath(saveFileDialog1.FileName), false);
try
{
bmp.LockImage(out bmData, out bytesPerPixel, out heightInPixels, out widthInPixels);
unsafe
{
for (int y = 0; y < heightInPixels; y++)
{
for (int x = 0; x < widthInPixels; x += bytesPerPixel)
{
writer.Write(bmData.GetPixelXY(x, y));
if (x != widthInPixels - 1)
{
writer.Write(';');
}
}
if (y != heightInPixels - 1)
{
writer.WriteLine();
}
}
}
bmp.UnlockBits(bmData);
writer.Dispose();
}
catch
{
try
{
bmp.UnlockBits(bmData);
writer.Dispose();
}
catch
{
}
}
}
}