原图:


Image image = Image.FromFile(MapPath("templates/1_f01.jpg"));
Graphics graphics = Graphics.FromImage(image);
graphics.DrawString("人", new Font("黑体", 15, GraphicsUnit.Pixel), Brushes.White, new PointF(17, 18));
image.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);

处理后的图:


处理后的图与原图相差太大,请问是什么原因?

[此贴子已经被作者于2007-8-8 11:01:35编辑过]