/// <summary>
/// Extracts a channel of an RGB image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
/// <param name="offset">offset (0..3)</param>
public void ExtractChannel(ClooCommandQueue queue, ClooImage2DByteRgbA source, ClooImage2DByteA dest, byte offset)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if (offset > 3) throw new ArgumentOutOfRangeException("offset", String.Format("offset must be between 0..3 but was {0}", offset));
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the same size as the source image (" + source.Width + "x" + source.Height + ")");
KernelImageByteExtractChannel.SetArguments(source, dest, offset);
queue.Execute(KernelImageByteExtractChannel, null, new long[] { source.Width, source.Height }, null, null);
dest.Modified = true;
}
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>
/// Box blur image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
/// <param name="sampler">sampler to be used for image reading</param>
/// <param name="offset">offset</param>
public void BoxBlur(ClooCommandQueue queue, ClooImage2DByteA source, ClooImage2DByteA dest, ClooSampler sampler, int offset)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if (sampler == null) throw new ArgumentNullException("sampler");
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the same size as the source image (" + source.Width + "x" + source.Height + ")");
KernelImageByteBoxBlur.SetArguments(source, dest, sampler, offset);
queue.Execute(KernelImageByteBoxBlur, null, new long[] { source.Width, source.Height }, null, null);
dest.Modified = true;
}
/// <summary>
/// Convert byte image to float image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
public void ByteToFloat(ClooCommandQueue queue, ClooImage2DByteA source, ClooImage2DFloatA 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 same size as the source image (" + source.Width + "x" + source.Height + ")");
KernelImageByteToFloat.SetArguments(source, dest);
queue.Execute(KernelImageByteToFloat, null, new long[] { source.Width, source.Height }, null, null);
dest.Modified = true;
dest.Normalized = false;
}
/// <summary>
/// Sets channel of a RGBA image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="image">image</param>
/// <param name="mask">mask image</param>
/// <param name="offset">offset (0..3)</param>
public void SetChannel(ClooCommandQueue queue, ClooImage2DByteRgbA image, ClooImage2DByteA mask, byte offset)
{
SetChannel(queue, image, mask, image, offset);
}
/// <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, ClooImage2DByteA image, byte value)
{
if (queue == null) throw new ArgumentNullException("queue");
if (image == null) throw new ArgumentNullException("dest");
KernelImageByteSetValueA.SetArguments(image, (uint)value);
queue.Execute(KernelImageByteSetValueA, null, new long[] { image.Width, image.Height }, null, null);
image.Modified = true;
}
/// <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;
}
/// <summary>
/// Create histogram backprojection for byte image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination (for propability map)</param>
/// <param name="srcHistogram">source histogram uint buffer (must be at least bins^3 in length)</param>
/// <param name="frameHistogram">frame histogram uint buffer (must be at least bins^3 in length)</param>
/// <param name="bins">number of bins</param>
/// <param name="startX">start from X coordinate</param>
/// <param name="startY">start from Y coordinate</param>
/// <param name="width">width</param>
/// <param name="height">height</param>
public void HistogramBackprojection(ClooCommandQueue queue, ClooImage2DByteRgbA source, ClooImage2DByteA dest,
ClooBuffer<uint> srcHistogram, ClooBuffer<uint> frameHistogram, byte bins, int startX = 0, int startY = 0,
int width = 0, int height = 0)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if (srcHistogram == null) throw new ArgumentNullException("srcHistogram");
if (frameHistogram == null) throw new ArgumentNullException("frameHistogram");
if (bins < 2) throw new ArgumentException("bins must be at least 2", "bins");
int length = bins * bins * bins;
if (srcHistogram.Count < length) throw new ArgumentException("Buffer length for histogram must be at least " + length, "srcHistogram");
if (frameHistogram.Count < length) throw new ArgumentException("Buffer length for histogram must be at least " + length, "frameHistogram");
if (width == 0) width = source.Width - startX;
if (height == 0) height = source.Height - startY;
if (width < 0) throw new ArgumentOutOfRangeException("width");
if (height < 0) throw new ArgumentOutOfRangeException("height");
KernelImageByteRgbHistogramByteBP.SetArguments(source, dest, srcHistogram, frameHistogram, bins, (uint)startX, (uint)startY);
queue.Execute(KernelImageByteRgbHistogramByteBP, null, new long[] { width, height }, null, null);
dest.Modified = true;
}
/// <summary>
/// Create histogram
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="histogram">byte buffer (256 bytes)</param>
/// <param name="startX">start from X coordinate</param>
/// <param name="startY">start from Y coordinate</param>
/// <param name="width">width</param>
/// <param name="height">height</param>
public void Histogram256(ClooCommandQueue queue, ClooImage2DByteA source, ClooBuffer<uint> histogram,
int startX = 0, int startY = 0, int width = 0, int height = 0)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
if (histogram == null) throw new ArgumentNullException("histogram");
if (histogram.Size < 256) throw new ArgumentException("Buffer size for histogram must be at least 256 bytes", "histogram");
if (width == 0) width = source.Width - startX;
if (height == 0) height = source.Height - startY;
if (width < 0) throw new ArgumentOutOfRangeException("width");
if (height < 0) throw new ArgumentOutOfRangeException("height");
KernelCoreUIntSetValue.SetArguments(histogram, (uint)0);
queue.Execute(KernelCoreUIntSetValue, null, new long[] { 256 }, null, null);
KernelImageByteHistogram256.SetArguments(source, histogram, (uint)startX, (uint)startY);
queue.Execute(KernelImageByteHistogram256, null, new long[] { width, height }, null, null);
histogram.Modified = true;
}
/// <summary>
/// Convert float image to byte image
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
public void FloatToByte(ClooCommandQueue queue, ClooImage2DFloatA source, ClooImage2DByteA 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 same size as the source image (" + source.Width + "x" + source.Height + ")");
if (source.Normalized)
{
// use normalized kernel
KernelImageFloatToByteNorm.SetArguments(source, dest);
queue.Execute(KernelImageFloatToByteNorm, null, new long[] { source.Width, source.Height }, null, null);
}
else
{
// use normal kernel
KernelImageFloatToByte.SetArguments(source, dest);
queue.Execute(KernelImageFloatToByte, null, new long[] { source.Width, source.Height }, null, null);
}
dest.Modified = true;
}
/// <summary>
/// Flip image Y coordinate
/// </summary>
/// <param name="queue">cloo command queue</param>
/// <param name="source">image source</param>
/// <param name="dest">image destination</param>
public void FlipY(ClooCommandQueue queue, ClooImage2DByteA source, ClooImage2DByteA dest)
{
if (queue == null) throw new ArgumentNullException("queue");
if (source == null) throw new ArgumentNullException("source");
if (dest == null) throw new ArgumentNullException("dest");
if (source == dest) throw new ArgumentException("Flipping kernel is not designed to run inline therefore source and destination must be different images");
if ((source.Width > dest.Width) || (source.Height > dest.Height)) throw new ArgumentException("Destination image (" + dest.Width + "x" + dest.Height + ") must have at least the same size as the source image (" + source.Width + "x" + source.Height + ")");
KernelImageByteFlipY.SetArguments(source, dest);
queue.Execute(KernelImageByteFlipY, null, new long[] { source.Width, source.Height }, null, null);
dest.Modified = true;
}
