public static void DistanceTransformMy(bool negative = false)
{
Glb.DrawMatAndHist0(Glb.matSrc);
var matThr = Glb.matSrc.CvtColor(ColorConversionCodes.BGR2GRAY).Threshold(128, 255, ThresholdTypes.Otsu);
if (negative)
{
Cv2.BitwiseNot(matThr, matThr);
}
Glb.DrawMatAndHist1(matThr);
var matDist = new Mat <float>(matThr.Size());
IpUnsafe.DistanceTransform(matThr.Data, matThr.Width, matThr.Height, matDist.Data);
var x1 = matDist.Min();
var x2 = matDist.Max();
float y1 = 0;
float y2 = 255;
double scale = (y2 - y1) / (x2 - x1);
double offset = (x2 * y1 - x1 * y2) / (x2 - x1);
var matDistColor = new Mat();
matDist.ConvertTo(matDistColor, MatType.CV_8UC1, scale, offset);
Glb.DrawMatAndHist2(matDistColor);
matThr.Dispose();
matDist.Dispose();
matDistColor.Dispose();
}
public static void ErodeUnsafe(int iteration, bool useParallel)
{
Glb.DrawMatAndHist0(Glb.matSrc);
var matGray = Glb.matSrc.CvtColor(ColorConversionCodes.BGR2GRAY);
Glb.DrawMatAndHist1(matGray);
Glb.TimerStart();
var matDst = new Mat(matGray.Size(), matGray.Type());
for (int i = 0; i < iteration; i++)
{
if (i % 2 == 0)
{
IpUnsafe.Erode(matGray.Data, matDst.Data, matGray.Width, matGray.Height, (int)matGray.Step(), useParallel);
}
else
{
IpUnsafe.Erode(matDst.Data, matGray.Data, matGray.Width, matGray.Height, (int)matGray.Step(), useParallel);
}
}
if (iteration != 0 && iteration % 2 == 0)
{
matGray.CopyTo(matDst);
}
Console.WriteLine("=> Method Time: {0}ms", Glb.TimerStop());
Glb.DrawMatAndHist2(matDst);
matGray.Dispose();
matDst.Dispose();
}
public static void ImageCopyMarshal1()
{
Mat matDst = new Mat(Glb.matSrc[0].Size(), Glb.matSrc[0].Type());
int nbytes = (int)Glb.matSrc[0].Step() * Glb.matSrc[0].Height;
IpUnsafe.MemcpyMarshal1(matDst.Data, Glb.matSrc[0].Data, nbytes);
Glb.DrawMatAndHist(Glb.matSrc[0]);
Glb.DrawMatAndHist(matDst);
}
public static Mat ErodeUnsafe(Mat matGray, int iteration, bool useParallel)
{
var mat0 = matGray.Clone();
var mat1 = new Mat(mat0.Size(), mat0.Type());
for (int i = 0; i < iteration; i++)
{
var matSrc = (i % 2 == 0) ? mat0 : mat1;
var matDst = (i % 2 == 0) ? mat1 : mat0;
IpUnsafe.Erode(matSrc.Data, matDst.Data, matGray.Width, matGray.Height, (int)matGray.Step(), useParallel);
}
return((iteration % 2 == 0) ? mat0 : mat1);
}
public static void ImageCopyMarshal1()
{
Mat matDst = new Mat(Glb.matSrc.Size(), Glb.matSrc.Type());
int nbytes = (int)Glb.matSrc.Step() * Glb.matSrc.Height;
Glb.TimerStart();
IpUnsafe.MemcpyMarshal1(matDst.Data, Glb.matSrc.Data, nbytes);
Console.WriteLine("=> Method Time: {0}ms", Glb.TimerStop());
Glb.DrawMatAndHist0(Glb.matSrc);
Glb.DrawMatAndHist1(matDst);
Glb.DrawMatAndHist2(null);
matDst.Dispose();
}
public static double InverseUnsafe()
{
Glb.DrawMatAndHist(Glb.matSrc[0]);
var matDst = Glb.matSrc[0].CvtColor(ColorConversionCodes.BGR2GRAY);
Glb.DrawMatAndHist(matDst);
var st = Util.GetTimeMs();
IpUnsafe.Inverse(matDst.Data, matDst.Width, matDst.Height, (int)matDst.Step());
var dt = Util.GetTimeMs() - st;
Glb.DrawMatAndHist(matDst);
return(dt);
}
public static double InverseParallelFor()
{
Glb.DrawMatAndHist0(Glb.matSrc);
var matDst = Glb.matSrc.CvtColor(ColorConversionCodes.BGR2GRAY);
Glb.DrawMatAndHist1(matDst);
var st = GetTimeMs();
IpUnsafe.InverseParallelFor(matDst.Data, matDst.Width, matDst.Height, (int)matDst.Step());
var dt = GetTimeMs() - st;
Glb.DrawMatAndHist2(matDst);
matDst.Dispose();
return(dt);
}
