public void ClooExecuteHistogramN()
{
var gpuHist = new ClooBuffer<uint>(Context, Cloo.ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.AllocateHostPointer, 64);
var cpuHist = new CpuBuffer<uint>(64);
var gpuImage = CreateClooImageByteRgbA(100, 100);
ClooImaging.HistogramN(Queue, gpuImage, gpuHist, 4);
gpuHist.ReadFromDevice(Queue);
// compare GPU histogram with CPU version
CpuImaging.HistogramN(gpuImage, cpuHist, 4);
Assert.AreNotEqual(0, cpuHist.HostBuffer.Sum(x => x));
Assert.AreEqual(cpuHist.HostBuffer.Sum(x => x), gpuHist.HostBuffer.Sum(x => x));
// check each value
for (int i = 0; i < cpuHist.HostBuffer.Length; i++)
Assert.AreEqual(cpuHist.HostBuffer[i], gpuHist.HostBuffer[i], "Histogram comparison failed at index " + i);
}
public void ClooExecuteHistogramBackprojection()
{
var gpuHist = new ClooBuffer<uint>(Context, Cloo.ComputeMemoryFlags.ReadWrite | ComputeMemoryFlags.AllocateHostPointer, 64);
var srcImage = CreateClooImageByteRgbA(100, 100);
var dstImage = CreateClooImageByteA(100, 100);
srcImage.HostBuffer.Clear();
srcImage.WriteToDevice(Queue);
ClooImaging.HistogramN(Queue, srcImage, gpuHist, 4);
gpuHist.ReadFromDevice(Queue);
ClooImaging.HistogramBackprojection(Queue, srcImage, dstImage, gpuHist, gpuHist, 4);
dstImage.ReadFromDevice(Queue);
// check each value
for (int i = 0; i < dstImage.HostBuffer.Length; i++)
Assert.AreEqual((byte)255, dstImage.HostBuffer[i], "Destination image mismatched probability at index " + i);
// TODO: add more tests here
}
