c#怎么让两张图片叠加

发布网友 发布时间：2024-03-24 05:46

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热心网友 时间：2024-04-08 21:46

int Height = this.pictureBox1.Image.Height;
            int Width = this.pictureBox1.Image.Width;
            Bitmap oldbitmap = (Bitmap)this.pictureBox1.Image;
            //this.textBox1.Text = (newbitmap.Width.ToString());
            //this.textBox2.Text = (newbitmap.Height.ToString());
            if (pictureBox1 != null)
            {
                Form2 noise = new Form2();
                if (noise.ShowDialog() == DialogResult.OK)
                {
                    Rectangle rect = new Rectangle(0, 0, oldbitmap.Width, oldbitmap.Height);
                    System.Drawing.Imaging.BitmapData bmpData = oldbitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, oldbitmap.PixelFormat);
                    IntPtr ptr = bmpData.Scan0;
                    int bytes = oldbitmap.Width * oldbitmap.Height;
  
                    this.textBox1.Text = (oldbitmap.Width.ToString());
  
                    byte[] grayValues = new byte[bytes];
                    System.Runtime.InteropServices.Marshal.Copy(ptr, grayValues, 0, bytes);
                    double temp = 0;
                    byte flagNoise = noise.GetFlag;
                    double[] paraNoise = new double[2];
                    paraNoise = noise.GetParaN;
  
                    Random r1, r2;
                    double v1, v2;
                    r1 = new Random(unchecked((int)DateTime.Now.Ticks));
                    r2 = new Random(~unchecked((int)DateTime.Now.Ticks));
  
                    for (int i = 0; i < bytes; i++)
                    {
                        switch (flagNoise)
                        {
                            case 0:
                                do
                                {
                                    v1 = r1.NextDouble();
                                }
                                while (v1 <= 0.00000000001);
                                v2 = r2.NextDouble();
                                temp = Math.Sqrt(-2 * Math.Log(v1)) * Math.Cos(2 * Math.PI * v2) * paraNoise[1] + paraNoise[0];
                                break;
                            case 1:
                                v1 = r1.NextDouble();
                                if (v1 <= paraNoise[0])
                                    temp = -500;
                                else if (v1 >= (1 - paraNoise[1]))
                                    temp = 500;
                                else
                                    temp = 0;
                                break;
                            default:
                                MessageBox.Show("无效！");
                                break;
                        }
                        temp = temp + grayValues[i];
  
                        if (temp > 255)
                        {
                            grayValues[i] = 255;
                        }
                        else if (temp < 0)
                        {
                            grayValues[i] = 0;
                        }
                        else
                            grayValues[i] = Convert.ToByte(temp);
                    }
                    System.Runtime.InteropServices.Marshal.Copy(grayValues, 0, ptr, bytes);
                    oldbitmap.UnlockBits(bmpData);
                      
                    int iWidth = oldbitmap.Width;
                    int iHeight = oldbitmap.Height;
pictureBox1.Image = oldbitmap;