/// <summary>
/// Return the specific diagonal elements of this matrix
/// </summary>
/// <param name="diag">Array diagonal. Zero corresponds to the main diagonal, -1 corresponds to the diagonal above the main etc., 1 corresponds to the diagonal below the main etc</param>
/// <returns>The specific diagonal elements of this matrix</returns>
public Matrix <TDepth> GetDiag(int diag)
{
Matrix <TDepth> subMat = new Matrix <TDepth>();
subMat._array = _array;
subMat.AllocateHeader();
subMat._ptr = CvInvoke.cvGetDiag(_ptr, subMat.Ptr, diag);
return(subMat);
}
/// <summary>
/// Get the Matrix, corresponding to a specified column span of the input array
/// </summary>
/// <param name="endCol">Zero-based index of the ending column (exclusive) of the span</param>
/// <param name="startCol">Zero-based index of the selected column</param>
/// <returns>the specific column span of the matrix</returns>
public Matrix <TDepth> GetCols(int startCol, int endCol)
{
Matrix <TDepth> subMat = new Matrix <TDepth>();
subMat._array = _array;
subMat.AllocateHeader();
subMat._ptr = CvInvoke.cvGetCols(_ptr, subMat.Ptr, startCol, endCol);
return(subMat);
}
/// <summary>
/// Get a submatrix corresponding to a specified rectangle
/// </summary>
/// <param name="rect">the rectangle area of the sub-matrix</param>
/// <returns>A submatrix corresponding to a specified rectangle</returns>
public Matrix <TDepth> GetSubRect(Rectangle rect)
{
Matrix <TDepth> subMat = new Matrix <TDepth>();
subMat._array = _array;
subMat.AllocateHeader();
CvInvoke.cvGetSubRect(_ptr, subMat.Ptr, rect);
return(subMat);
}
/// <summary>
/// Return the matrix corresponding to a specified row span of the input array
/// </summary>
/// <param name="startRow">Zero-based index of the starting row (inclusive) of the span</param>
/// <param name="endRow">Zero-based index of the ending row (exclusive) of the span</param>
/// <param name="deltaRow">Index step in the row span. That is, the function extracts every delta_row-th row from start_row and up to (but not including) end_row</param>
/// <returns>A matrix corresponding to a specified row span of the input array</returns>
public Matrix <TDepth> GetRows(int startRow, int endRow, int deltaRow)
{
Matrix <TDepth> subMat = new Matrix <TDepth>();
subMat._array = _array;
subMat.AllocateHeader();
subMat._ptr = CvInvoke.cvGetRows(_ptr, subMat.Ptr, startRow, endRow, deltaRow);
return(subMat);
}
/// <summary>
/// Get reshaped matrix which also share the same data with the current matrix
/// </summary>
/// <param name="newChannels">the new number of channles</param>
/// <param name="newRows">The new number of rows</param>
/// <returns>A reshaped matrix which also share the same data with the current matrix</returns>
public Matrix <TDepth> Reshape(int newChannels, int newRows)
{
Matrix <TDepth> res = new Matrix <TDepth>();
res._array = _array;
res.AllocateHeader();
CvInvoke.cvReshape(Ptr, res.Ptr, newChannels, newRows);
return(res);
}
