public static Rectangle[] FindPerson(IInputArray image, out long processingTime)
{
Stopwatch watch = new Stopwatch();
Rectangle[] regions = null;
if (Controller.Instance.Cuda)
{
GpuMat GpuImage = new GpuMat(image);
using (InputArray iaImage = GpuImage.GetInputArray())
{
//if the input array is a GpuMat
//check if there is a compatible Cuda device to run pedestrian detection
if (iaImage.Kind == InputArray.Type.CudaGpuMat)
{
//this is the Cuda version
using (CudaHOG des = new CudaHOG(
new Size(64, 128),
new Size(16, 16),
new Size(8, 8),
new Size(8, 8)))
{
des.SetSVMDetector(des.GetDefaultPeopleDetector());
watch = Stopwatch.StartNew();
using (GpuMat cudaBgra = new GpuMat())
using (VectorOfRect vr = new VectorOfRect())
{
CudaInvoke.CvtColor(image, cudaBgra, ColorConversion.Bgr2Bgra);
des.DetectMultiScale(cudaBgra, vr);
regions = vr.ToArray();
}
}
}
}
}
else
{
using (InputArray iaImage = image.GetInputArray())
{
//this is the CPU/OpenCL version
using (HOGDescriptor des = new HOGDescriptor())
{
des.SetSVMDetector(HOGDescriptor.GetDefaultPeopleDetector());
watch = Stopwatch.StartNew();
MCvObjectDetection[] results = des.DetectMultiScale(image);
regions = new Rectangle[results.Length];
for (int i = 0; i < results.Length; i++)
{
regions[i] = results[i].Rect;
}
watch.Stop();
}
}
}
processingTime = watch.ElapsedMilliseconds;
return(regions);
}
