如何在C＃中顯示12位圖像

Question

我成功地在C＃中使用System.Drawing.Imaging.PixelFormat.Format8bppIndexed顯示了一個8位位圖圖像。

但是，我現在有一個12位原始數據圖像。我如何在C＃中顯示它。

Answer 1

我successed按下來擴展到8位像素值如下顯示接收到的12位像素值： ...

// Receive bytes from a Device 
     board.ReadBytes((int)0xA0, 1024 * 30, ref data_Array1); 
     //restore the 12-bit pixel values 
     for (int i = 0; i < width * height; i++) 
     { 
     // This is a 12-bit pixel value.  
     raw_data1[i] = (ushort)((((int)data_Array1[2 * i+1] << 8) & 0x0F00) | ((int)data_Array1[2 * i ] & 0xFF));      
     } 
     // Convert from a 12-bit array to a 8-bit array. 
     raw_data_byte1 = DownScale(raw_data1); 
     //create a new Bitmap 
     Bitmap bmp = new Bitmap(height, width, System.Drawing.Imaging.PixelFormat.Format8bppIndexed);     System.Drawing.Imaging.ColorPalette pal = bmp.Palette; 
     //create grayscale palette 
     for (int i = 0; i < 256; i++) 
     { 
     pal.Entries[i] = Color.FromArgb((int)255, i, i, i); 
     } 

     //assign to bmp 
     bmp.Palette = pal; 

     //lock it to get the BitmapData Object 
     System.Drawing.Imaging.BitmapData bmData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format8bppIndexed); 
     //copy the bytes 
System.Runtime.InteropServices.Marshal.Copy(raw_data_byte1, 0, bmData.Scan0, bmData.Stride * bmData.Height); 
     //never forget to unlock the bitmap 
     bmp.UnlockBits(bmData); 
     //display 
     this.pictureBox1.Image = bmp;