public void SetGrayscale() in ur given demo project of imageprocessing mean in simple wordds or explain it in brief

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public void SetGrayscale()
{
Bitmap temp = (Bitmap)_currentBitmap;
Bitmap bmap = (Bitmap)temp.Clone();
Color c;
for (int i = 0; i < bmap.Width; i++)
{
for (int j = 0; j < bmap.Height; j++)
{
c = bmap.GetPixel(i, j);
byte gray = (byte)(.299 * c.R + .587 * c.G + .114 * c.B);

bmap.SetPixel(i, j, Color.FromArgb(gray, gray, gray));
}
}
_currentBitmap = (Bitmap)bmap.Clone();
}

Posted 14-Oct-14 20:28pm

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BillWoodruff 15-Oct-14 2:40am

You have a wonderful opportunity to learn here: I suggest you start by looking up in the MS documentation each operator in each line of this code, and studying how it is used, and what it does.

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MukeshSagar · Answer 1 · 2014-10-18T02:48:00

The commented code is as follows:

public void SetGrayscale()
{
// Get the bitmap image
Bitmap temp = (Bitmap)_currentBitmap;

// Create clone of bitmap image
Bitmap bmap = (Bitmap)temp.Clone();

// Color class to change the
Color c;
for (int i = 0; i < bmap.Width; i++)
{
for (int j = 0; j < bmap.Height; j++)
{
// Get the pixel position of the image
c = bmap.GetPixel(i, j);

// Change the color of pixel by latering the RGB values
byte gray = (byte)(.299 * c.R + .587 * c.G + .114 * c.B);

// Modify the altered values in the cloned image
bmap.SetPixel(i, j, Color.FromArgb(gray, gray, gray));
}
}
// Replace the current image by the cloned image
_currentBitmap = (Bitmap)bmap.Clone();
}