private void kirsch算子ToolStripMenuItem_Click(object sender, EventArgs e) { if (pictureBox1.Image == null) { return; } Bitmap bit = new Bitmap(pictureBox1.Image); Bitmap graybit = GraphicClass.convertRGB2Gray(bit); PassValueForm form = new PassValueForm(); form.Owner = this; form.Description = "输入阙值"; DialogResult result = form.ShowDialog(); if (result == DialogResult.OK) { pictureBox2.Refresh(); double value1 = Convert.ToDouble(form.Value); pictureBox2.Image = GraphicClass.kirsch(graybit, value1); } }