MaskRcnnMindsporePost

This is the MaskRcnnMindsporePost model postprocessing class, which is inherited from the object detection post-processing base class (ObjectPostProcessBase).

The Init(), DeInit(), and Process() APIs in ObjectPostProcessBase are reloaded (see the description of ObjectPostProcessBase). The assignment operator "=" is also reloaded.

In addition, it implements the std::shared_ptr<MxBase::MaskRcnnMindsporePost> GetObjectInstance() method to obtain the smart pointer instance of this class.