Temporarily Increasing Key points During Rotation in SLAM

[EndlessPeak]

I have noticed that compared to ORB-SLAM2/3, the default number of keypoints in current stella_vslam systems is a little high. In the same KITTI 00 sequence, stella_vslam consumes a significant amount of memory, especially during loop closure (approximately 1-3 GiB). Therefore, I wonder if it is possible to initialize the SLAM system with a lower number of points and only temporarily increase the number when the camera undergoes rotation. This would ensure lower memory usage without sacrificing much accuracy.