private void pixel_Click(object sender, EventArgs e)
{
if (curBitmap != null)
{
BitmapByHandle = (Bitmap)curBitmap.Clone();
myTimer.ClearTimer();
myTimer.Start();
Color curColor;
int ret;
for (int i = 0; i < BitmapByHandle.Width; i++)
{
for (int j = 0; j < BitmapByHandle.Height; j++)
{
curColor = BitmapByHandle.GetPixel(i, j);
ret = (int)(curColor.R * 0.299 + curColor.G * 0.587 + curColor.B * 0.114);
BitmapByHandle.SetPixel(i, j, Color.FromArgb(ret, ret, ret));
}
}
myTimer.Stop();
timeBox.Text = myTimer.Duration.ToString("####.##") + " 毫秒";
Invalidate();
}
}
