SuperPoint: return at minimum 2 features or 0 (fixed crash when only one feature). Python: added main python instance from Rtabmap object (to get python instancied once for ROS). MultiSessionWidget: Fixed layout warning. Memory::computeTransform() avoid re-instanciating RegistrationVis when Reg/Strategy=1 for guess transform (to fix PyMatcher re-initialized every time). CMake: added video module to opencv required components.

corelib/src/CMakeLists.txt

@@ -199,6 +199,7 @@ IF(WITH_PYTHON AND Python3_FOUND)
 	SET(LIBRARIES
 		${LIBRARIES}
 		Python3::Python
+		Python3::NumPy
 	)
 	SET(SRC_FILES
 		${SRC_FILES}