Convert an emgu code to GPU - gpu

Question

I am totally new in GPU programing , i have no experience before working with a GPU , I have some functions , I have to convert those functions so that they run in GPU , The cpu version is running fine , I have used emgucv for image operations . My code is given bellow , please help me .
public static Image Highlight(Image image)
{
if (image == null)
{
throw new ArgumentNullException("image");
}
using (Image<Bgr, byte> originalImage = ConvertToEmgu(image))
using (Image<Bgr, byte> resavedOriginalImage = ConvertToEmgu(ResaveImageWithGivenCompression(image)))
using (Image<Bgr, byte> errorLevelImage = (originalImage - resavedOriginalImage) * scalingFactor)
{
return errorLevelImage.ToBitmap();
}
}
private static Image<Bgr, byte> ConvertToEmgu(Image image)
{
using (Bitmap bitmap = new Bitmap(image))
{
return new Image<Bgr, byte>(bitmap);
}
}
private static Image ResaveImage(Image image)
{
EncoderParameters jpegEncoderParameters = new EncoderParameters(1);
ImageCodecInfo jpegWithGivenCompressionFormat = GetEncoderInfo("image/jpeg");
jpegEncoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, compressionQuality);
using (MemoryStream resavedImageStream = new MemoryStream())
{
image.Save(resavedImageStream, jpegWithGivenCompressionFormat, jpegEncoderParameters);
return Image.FromStream(resavedImageStream);
}
}
private static ImageCodecInfo GetEncoderInfo(string mimeType)
{
ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
return encoders.FirstOrDefault(encoder => encoder.MimeType == mimeType);
}
}

Answer 1

First you need a Graphics card that supports CUDA at least 2.0.
Then you have to install the CUDA drivers from NVidia. Search for
CUDA toolkit.
Then you need to include the CUDA dlls in your project (Just like you
did with the Opencv dlls)
Then you need to use the CV.GPU namespace
Then you replace all your functions with the appropriate GPU version.
In your code I do not see any OpenCV functions so there is nothing to
replace. (But I could be missing some)

Answer 2

Please look at the following websites to answer your question
http://opencv.willowgarage.com/wiki/OpenCV_GPU
http://opencv.itseez.com/doc/tutorials/tutorials.html
http://blog.cuvilib.com/2011/03/22/how-to-build-opencv-2-2-with-gpu-cuda-on-windows-7/