void initializeDevice()
{
try
{
_selectedDevice = comboBoxDevices.SelectedItem as ClooDevice;
if (_context != null)
{
_startProcessing = false;
// dispose previous context
_context.Dispose();
_kernels = null;
_context = null;
_sampler = null;
_queue = null;
image2.Source = null;
image3.Source = null;
image4.Source = null;
}
if (_selectedDevice != null)
{
// create context
_context = _selectedDevice.CreateContext();
_queue = _context.CreateCommandQueue();
_sampler = new ClooSampler(_context, false, ComputeImageAddressing.ClampToEdge, ComputeImageFiltering.Linear);
_kernels = ClooProgramViolaJones.Create(_context);
_haarObjectDetector = ClooHaarObjectDetector.CreateFaceDetector(_context, _queue, 640, 480);
_haarObjectDetector.ScalingFactor = 1.25f;
_haarObjectDetector.ScalingMode = ScalingMode.SmallerToLarger;
_haarObjectDetector.MinSize = new System.Drawing.Size(30, 30);
_haarObjectDetector.MaxSize = new System.Drawing.Size(100, 100);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Reset();
stopwatch.Start();
_histogram = new ClooBuffer<uint>(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.AllocateHostPointer, 32 * 32 * 32);
_histogram2 = new ClooBuffer<uint>(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.AllocateHostPointer, 32 * 32 * 32);
_clooImageByteOriginal = ClooImage2DByteRgbA.CreateFromBitmap(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1);
_clooImageByteOriginal.WriteToDevice(_queue);
_clooImageByteGrayOriginal = ClooImage2DByteA.CreateFromBitmap(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1);
_clooImageByteGrayOriginal.WriteToDevice(_queue);
_clooImageByteResult = ClooImage2DByteRgbA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageByteResultA = ClooImage2DByteA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatOriginal = ClooImage2DFloatRgbA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatGrayOriginal = ClooImage2DFloatA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatTemp1 = ClooImage2DFloatRgbA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatTemp2 = ClooImage2DFloatRgbA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatATemp1 = ClooImage2DFloatA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatATemp2 = ClooImage2DFloatA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width, _bitmapImage1.Height);
_clooImageFloatIntegral = ClooImage2DFloatA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width + 1, _bitmapImage1.Height + 1);
_clooImageUIntIntegral = ClooImage2DUIntA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width + 1, _bitmapImage1.Height + 1);
_clooImageUIntIntegralSquare = ClooImage2DUIntA.Create(_context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, _bitmapImage1.Width + 1, _bitmapImage1.Height + 1);
_queue.Finish();
label1.Content = stopwatch.ElapsedMilliseconds + " ms - original " + _bitmapImage1.Width + "x" + _bitmapImage1.Height;
_startProcessing = true;
Update();
Update();
}
}
catch (Exception ex)
{
// show exception
MessageBox.Show(ex.Message, ex.GetType().ToString(), MessageBoxButton.OK, MessageBoxImage.Stop);
}
}
/// <summary>
/// Sets a constant value to all cells in an image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="image">image</param>
/// <param name="value">value to set</param>
public void SetValue(ClooCommandQueue queue, ClooImage2DUIntA image, uint value)
{
if (queue == null) throw new ArgumentNullException("queue");
if (image == null) throw new ArgumentNullException("dest");
KernelImageUIntSetValueA.SetArguments(image, value);
queue.Execute(KernelImageUIntSetValueA, null, new long[] { image.Width, image.Height }, null, null);
image.Modified = true;
}
public void ProcessViolaJonesFrame(ClooCommandQueue queue, ClooBuffer<HaarFeatureNode> nodes,
int stagesCount, IBuffer<int> stageNodeCounts, IBuffer<float> stageThresholds,
ClooImage2DUIntA integral, ClooImage2DUIntA integralSquare,
IBuffer<Rectangle> resRectangles,
float scale, int countX, int countY,
int stepX, int stepY, int windowWidth, int windowHeight)
{
if (queue == null) throw new ArgumentNullException("queue");
if (nodes == null) throw new ArgumentNullException("nodes");
if (integral == null) throw new ArgumentNullException("integral");
if (integralSquare == null) throw new ArgumentNullException("integralSquare");
if (resRectangles == null) throw new ArgumentNullException("resRectangles");
KernelImageViolaJonesProcess.SetArguments(nodes, stagesCount, stageNodeCounts, stageThresholds,
integral, integralSquare, resRectangles, resRectangles.HostBuffer.Length, scale, stepX, stepY,
windowWidth, windowHeight);
queue.Execute(KernelImageViolaJonesProcess, null, new long[] { countX, countY }, null, null);
}
/// <summary>
/// Convert an float image to a squared integral image
/// </summary>
/// <remarks>
/// We skip the last line to keep the original size (better performance)
/// </remarks>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
public void IntegralSquare(ClooCommandQueue queue, ClooImage2DByteA source, ClooImage2DUIntA dest)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the source image width and height but is only " + source.Width + "x" + source.Height);
// execute step 1
SetValue(queue, dest, 0);
KernelImageUIntIntegralSquareStep1.SetArguments(source, dest);
queue.Execute(KernelImageUIntIntegralSquareStep1, null, new long[] { source.Height - 1 }, null, null);
dest.Modified = true;
// execute step 2
KernelImageUIntIntegralSquare.SetArguments(dest, dest, source.Height);
queue.Execute(KernelImageUIntIntegralSquare, null, new long[] { source.Width - 1 }, null, null);
dest.Modified = true;
}
