public static uint[] GetHistogram(Index3 index, ArrayView3D <short> imageView, /*remove*/ Index2 histImageIndex, HistogramData histData)
{
var histogramKernel = GpuContext.Instance.Accelerator.LoadAutoGroupedStreamKernel <Index3, ArrayView <int>, ArrayView3D <short> >(HistogramKernels.CalculateHistogram);
var histogramImageKernel = GpuContext.Instance.Accelerator.LoadAutoGroupedStreamKernel <Index, ArrayView2D <short>, ArrayView <int>, double, double, int>(HistogramKernels.CalculateHistogramImage);
uint[] result;
int[] buf1;
using (var bufHist = GpuContext.Instance.Accelerator.Allocate <int>(short.MaxValue))
{
bufHist.MemSetToZero();
histogramKernel(index, bufHist.View, imageView);
GpuContext.Instance.Accelerator.Synchronize();
buf1 = bufHist.GetAsArray();
var lastElement = KernelHelpers.FindLastNotZeroIndex(buf1);
histData.histogramData = buf1.Take(lastElement + 1).ToArray();
var max = buf1.Skip(1).Max();
using (var bufHistImage = GpuContext.Instance.Accelerator.Allocate <short>(histImageIndex))
using (var bufOut2 = GpuContext.Instance.Accelerator.Allocate <uint>(histImageIndex.Size))
{
bufHistImage.MemSetToZero();
histogramImageKernel(new Index(lastElement + 1), bufHistImage.View, bufHist.View.GetSubView(0, lastElement + 1), 1000, 1000, max);
GpuContext.Instance.Accelerator.Synchronize();
PiсConvertKernel(histImageIndex.Size, bufOut2, bufHistImage.AsLinearView(), 1, 0);
GpuContext.Instance.Accelerator.Synchronize();
result = bufOut2.GetAsArray();
}
}
return(result);
}
public static void CalculateSobel(Index2 index, ArrayView2D <short> result, ArrayView3D <short> accumulatedSobel)
{
var val = KernelHelpers.Magnitude(accumulatedSobel, index);
result[index] = val;
}
public static void AccumulateSobelMap(Index3 index, ArrayView3D <short> result, ArrayView3D <short> hSobel, ArrayView3D <short> vSobel)
{
result[index] = KernelHelpers.Magnitude(hSobel[index], vSobel[index]);
}
