using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Imaging;
namespace LabMaster
{
public partial class gray : Form
{
public gray()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
bitmapmakegrayscale(pictureBox1.Image );
}
private void bitmapmakegrayscale(Image imagei)
{
Bitmap image = imagei as Bitmap;
Bitmap bp = new Bitmap(image.Width,image .Height );
for (int i = 0; i < image.Width; i++)
{
for (int j = 0; j < image.Height; j++)
{
Color orgcol = image.GetPixel(i, j);
int grayscale = (int)((orgcol.R * .3)+(orgcol.G * .59)+(orgcol.B * .11));
Color newcol = Color.FromArgb(grayscale, grayscale, grayscale);
bp.SetPixel(i, j, newcol);
}
}
pictureBox2.Image = bp;
}
}
}
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