图像的灰度处理

[vivining]

private void btnDetect_Click(object sender, EventArgs e)
{
Color c = new Color();
Bitmap b = new Bitmap(picPictureBox1.Image);
Bitmap b1 = new Bitmap(picPictureBox2.Image);
int rr, gg, bb, cc;
for (int i = 0; i < picPictureBox1.Width; i++)
{
for (int j = 0; j < picPictureBox1.Height; j++)
{
c = b.GetPixel(i, j);
rr = c.B;
gg = c.G;
bb = c.B;
cc = (int)((rr + gg + bb) / 3);
if (cc < 0) cc = 0;
if (cc > 255) cc = 255;
Color c1 = Color.FromArgb(cc, cc, cc);

b1.SetPixel(i, j, c1);
}
picPictureBox2.Refresh();
picPictureBox2.Image = b1;
}
}

为什么我这段程序只能处理图像的一小部分

[xuggzu]

picbox的宽高不等于图像原始的宽高

[vivining]

那要怎么修改呢

[xuzuning]

picPictureBox1.Width 改为 b.Width picPictureBox1.Heigh 改为 b.Heigh

[vivining]

初学者有点蒙，谢谢哈