public static void merge(List <Mat> src, Mat dst)
{
if (src == null || src.Count == 0)
{
return;
}
if (!src[0].Valid || src[0].IsEmpty)
{
return;
}
if (!dst.Valid)
{
return;
}
int rows = src[0].Rows, cols = src[0].Cols;
int dstChannels = src[0].Channels;
int n = src.Count; // src[i] may have more than 1 channel
var srcPtrs = new IntPtr[n];
srcPtrs[0] = src[0].MatObj;
for (int i = 1; i < n; i++) // check valid, size, and sumation over channel
{
if (src[i].Valid && src[i].Rows == rows && src[i].Cols == cols)
{
dstChannels += src[i].Channels;
srcPtrs[i] = src[i].MatObj;
}
else
{
return;
}
}
if (dstChannels > Mat.CV_CN_MAX) // exceed max channels support
{
return;
}
var srcPtrMat = new Mat(1, n * Marshal.SizeOf <IntPtr>(), Mat.makeType(1, Mat.MatDepth.CV_8U));
if (!srcPtrMat.Valid) // alloc unmanaged memory
{
return;
}
Marshal.Copy(srcPtrs, 0, srcPtrMat.Data, n);
NativeInvoker.coreCvMerge(srcPtrMat.Data, n, dst.MatObj);
}
public static void split(Mat src, List <Mat> dst)
{
if (!src.Valid || src.IsEmpty)
{
return;
}
int channel = src.Channels;
if (dst == null)
{
dst = new List <Mat>();
}
if (channel > dst.Count)
{
while (dst.Count < channel)
{
dst.Add(new Mat());
}
}
else if (channel < dst.Count)
{
dst.RemoveRange(channel, dst.Count - channel);
}
var dstPtrs = new IntPtr[channel];
for (int i = 0; i < channel; i++)
{
if (dst[i].Valid)
{
dstPtrs[i] = dst[i].MatObj;
}
else
{
return; // check every mat in dst is valid
}
}
var dstPtrMat = new Mat(1, channel * Marshal.SizeOf <IntPtr>(), Mat.makeType(1, Mat.MatDepth.CV_8U));
if (!dstPtrMat.Valid) // alloc unmanaged memory
{
return;
}
Marshal.Copy(dstPtrs, 0, dstPtrMat.Data, channel);
NativeInvoker.coreCvSplit(src.MatObj, dstPtrMat.Data, channel);
}
public static void warpAffine(Mat src, Mat dst, System.Numerics.Matrix3x2 trans, Size dSize,
Interpolation inter = Interpolation.INTER_LINEAR, bool inverseMap = false,
BorderMode borderMode = BorderMode.BORDER_CONSTANT, double[] borderValue = null)
{
Mat transMat = trans;
int flags = inverseMap ? ((int)InverseMap.WARP_INVERSE_MAP | (int)inter) : (int)inter;
Mat matBorderValue = null;
IntPtr ptrBorderValue = IntPtr.Zero;
if (borderMode == BorderMode.BORDER_CONSTANT && borderValue != null && borderValue.Length > 0)
{
matBorderValue = new Mat(1, borderValue.Length, Mat.makeType(1, Mat.MatDepth.CV_64F));
if (matBorderValue.Valid && matBorderValue.copyAll(borderValue, 0, borderValue.Length))
{
ptrBorderValue = matBorderValue.Data;
}
}
NativeInvoker.coreCvWarpAffine(src.MatObj, dst.MatObj, transMat.MatObj, (int)dSize.w, (int)dSize.h,
flags, (int)borderMode, ptrBorderValue);
}