'Declaration

Public Property detectBorder As Boolean

public bool detectBorder { get; set; }

public: __property bool get_detectBorder();
public: __property void set_detectBorder(
   bool value
);

public:
property bool detectBorder {
   bool get();
   void set(bool value);
}

true - command detects the border and clears it berofe rotation angle determining; false - command determines the rotation angle on source image. Default value is true.