private void radioButton3_CheckedChanged(object sender, EventArgs e) { if (radioButton3.Checked == true) { textBox1.Text = mask3; pcxAfter = new ImgPcx(pcxGray); pcxAfter.EdgeCrispening("mask3"); pictureBox2.Image = pcxAfter.pcxImg; // 顯示SNR值 (到小數後2位) textBox2.Text = pcxGray.GetSNR(pcxGray, pcxAfter).ToString("f2"); } }