/// <summary>
/// Creates a face detector for GPU processing
/// </summary>
/// <param name="fileName">XML file containing Haar cascade stages (in OpenCL format)</param>
/// <param name="context">Cloo context</param>
/// <param name="queue">Cloo command queue</param>
/// <param name="imageWidth">image width</param>
/// <param name="imageHeight">image height</param>
/// <returns>HaarObjectDetector</returns>
public static ClooHaarObjectDetector CreateDetectorFromFile(string fileName, ClooContext context, ClooCommandQueue queue, int imageWidth, int imageHeight)
{
if (context == null) throw new ArgumentNullException("context");
if (queue == null) throw new ArgumentNullException("queue");
ClooHaarObjectDetector res = new ClooHaarObjectDetector();
res._clooProgram = ClooProgramViolaJones.Create(context);
res.Context = context;
res.Queue = queue;
res._integralImage = ClooImage2DUIntA.Create(context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, imageWidth, imageHeight);
res._integral2Image = ClooImage2DUIntA.Create(context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.UseHostPointer, imageWidth, imageHeight);
res._resultRectangles = new ClooBuffer<Rectangle>(context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.AllocateHostPointer, (long)MaxResultRectangles);
var tuple = LoadFromXml(fileName);
res.WindowWidth = tuple.WindowSize.Width;
res.WindowHeight = tuple.WindowSize.Height;
res._stageNodes = new ClooBuffer<HaarFeatureNode>(context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.CopyHostPointer, tuple.StageNodes.ToArray());
res._stageNodeCounts = new ClooBuffer<int>(context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.CopyHostPointer, tuple.StageNodesCount.ToArray());
res._stageThresholds = new ClooBuffer<float>(context, ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.CopyHostPointer, tuple.StageThresholds.ToArray());
res._totalNodesCount = tuple.StageNodes.Count;
res._stageCount = tuple.StageNodesCount.Count;
return res;
}
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 value of all cells in a buffer
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="value">value to set</param>
public void SetValue(ClooCommandQueue queue, ClooBuffer<uint> source, uint value)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
KernelCoreUIntSetValue.SetArguments(source, value);
queue.Execute(KernelCoreUIntSetValue, null, new long[] { source.HostBuffer.Length }, null, null);
source.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);
}
public void ClearViolaJonesRectangles(ClooCommandQueue queue, ClooBuffer<Rectangle> resRectangles)
{
if (queue == null) throw new ArgumentNullException("queue");
if (resRectangles == null) throw new ArgumentNullException("resRectangles");
KernelImageViolaJonesClear.SetArguments(resRectangles);
queue.Execute(KernelImageViolaJonesClear, null, new long[] { resRectangles.HostBuffer.Length }, null, null);
}
