Question

我正在编写一个Windows窗体应用程序。我有一个从CCD相机收到的图像。相机采用12位灰度 tiff - 每像素2个字节。为了接收它我正在使用WIA（Windows图像采集）。我可以从图像数据中创建一个字节数组。之后我需要在图片框中显示图像。如果在图片框中显示，则图像太暗。此外，创建的位图是Format32bppArgb。创建位图时是否会丢失质量？如何制作所需的位图格式？我对图像处理非常陌生，任何帮助都会很棒。我已经阅读了许多关于格式之间转换主题的论坛帖子，但到目前为止还没有运气。那么任何想法如何从我到目前为止接收16位灰度位图？

编辑：现在正在运行：

    private void btnAdvancedTestSnap_Click(object sender, EventArgs e)
    {
       WIA.CommonDialog _dialog = new CommonDialogClass();
       WIA.Device _camera = _dialog.ShowSelectDevice(WIA.WiaDeviceType.CameraDeviceType, false, false);


        ImageFile imageFile = (ImageFile)_camera.Items[1].Transfer(EnvFormatID.wiaFormatTIFF);
        Byte[] receivedBytes = (byte[])imageFile.FileData.get_BinaryData();

        int bytecount = receivedBytes.Length;
        int width = imageFile.Width;
        int height = imageFile.Height;
        int dimension = width * height * 2;//number of bytes representing the image - 2 bytes per pixel
        int startImgBytes = bytecount - dimension;
        startImgBytes += 1;// from which position of the big array to start making pixel values
        byte[] imageBytes = new byte[dimension]; //byte array with only bytes,representing the picture
        int j = 0;
        for (int i = startImgBytes; i < receivedBytes.Length; i++)//filling the only pixel byte data array
        {
            imageBytes[j] = receivedBytes[i];
            j++;
        }


         int pixDimension = width * height; //number of pixels in the image
         int[] pixVal = new int[pixDimension];
         int z = 0;
         for (int i = 0; i < imageBytes.Length; i+=2)
         {
             int res = (imageBytes[i] * 0x100) + imageBytes[i + 1];//int value of the pixel, 2 bytes per pixel

             int pix = (res * 255) / 4095;// scalling down to 8 bit value
             pixVal[z] = pix;
             z++;
         }


         Bitmap newImage = new Bitmap(width, height, PixelFormat.Format24bppRgb);
         Color p;
         //grayscale
         int counter = 0;
         for (int y = 0; y < height; y++)//height
         {
             for (int x = 0; x < width; x++)//width
             {
                 int val = pixVal[counter];
                 newImage.SetPixel(x,y,Color.FromArgb(255,val,val,val));
                 counter++;

             }
         }

         pbAdvanced.Image = newImage; //show the image in picture box

但这种方法对于高分辨率来说非常慢。任何想法如何提高速度。我阅读了Marshal.Copy和lockbits的示例，但在所有示例中，他们都使用源图像并复制到新的。任何帮助都将受到高度赞赏

c＃WIA 12位灰度图像作为位图丢失质量

0 个答案: