private void 二值化ToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (getCurrentImage())
{
var bm = new Bitmap(curBitmap);
var t = Matlab.GetThreshold(bm);
bm = Matlab.Thresh(bm, iw, ih, t);
pictureBox.Refresh();
pictureBox.Image = bm;
}
}