[RTABMAP] Features2d.cpp:937::parseParameters() GPU version of ORB not available (OpenCV cudafeatures2d module)! Using CPU version instead...

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Hello everyone ,

I use rtabmap_ros for visual odometry. But I get 3 fps. Also I have jetson nano. I want to increase fps.

I get such a warning when I want to use GPU;

Features2d.cpp:937::parseParameters() GPU version of ORB not available (OpenCV cudafeatures2d module)! Using CPU version instead...

It also gives the following warning when I use something different instead of ORB(like SURF,SIFT,FAST,BRIEF);

Features2d.cpp:433::create() BRIEF and FREAK features cannot be used because OpenCV was not built with xfeatures2d module. ORB is used instead.

or

Features2d.cpp:433::create() SIFT and SURF features cannot be used because OpenCV was not built with xfeatures2d module. ORB is used instead.