private void Button_Mid_Filter_Click(object sender, System.EventArgs e)
{
Bitmap newBmp;
ProcessFunctions.MedianFilter(noise_oldBmp, out newBmp);
this.pictureBox_WorkPlace.Image = ToolFunctions.GetThumbnail((Bitmap)newBmp.Clone(), pictureBox_WorkPlace.Height, pictureBox_WorkPlace.Width) as Image;
noise_oldBmp = newBmp;
}