2,135 research outputs found
Benchmarking and Comparing Popular Visual SLAM Algorithms
This paper contains the performance analysis and benchmarking of two popular
visual SLAM Algorithms: RGBD-SLAM and RTABMap. The dataset used for the
analysis is the TUM RGBD Dataset from the Computer Vision Group at TUM. The
dataset selected has a large set of image sequences from a Microsoft Kinect
RGB-D sensor with highly accurate and time-synchronized ground truth poses from
a motion capture system. The test sequences selected depict a variety of
problems and camera motions faced by Simultaneous Localization and Mapping
(SLAM) algorithms for the purpose of testing the robustness of the algorithms
in different situations. The evaluation metrics used for the comparison are
Absolute Trajectory Error (ATE) and Relative Pose Error (RPE). The analysis
involves comparing the Root Mean Square Error (RMSE) of the two metrics and the
processing time for each algorithm. This paper serves as an important aid in
the selection of SLAM algorithm for different scenes and camera motions. The
analysis helps to realize the limitations of both SLAM methods. This paper also
points out some underlying flaws in the used evaluation metrics.Comment: 7 pages, 4 figure
Stein fillings of planar open books
We prove that if a contact manifold is supported by a planar open
book, then Euler characteristic and signature of any Stein filling of
is bounded. We also prove a similar finiteness result for contact manifolds
supported by spinal open books with planar pages. Moving beyond the geography
of Stein fillings, we classify fillings of some lens spaces.Comment: Minor typos fixe
Stein fillings of contact 3-manifolds obtained as Legendrian surgeries
In this note, we classify Stein fillings of an infinite family of contact
3-manifolds up to diffeomorphism. Some contact 3-manifolds in this family can
be obtained by Legendrian surgeries on along certain
Legendrian 2-bridge knots. We also classify Stein fillings, up to symplectic
deformation, of an infinite family of contact 3-manifolds which can be obtained
by Legendrian surgeries on along certain Legendrian twist
knots. As a corollary, we obtain a classification of Stein fillings of an
infinite family of contact hyperbolic 3-manifolds up to symplectic deformation.Comment: Made changes to reflect referee comments. Proofs of some of the key
lemmas are expanded. Final version accepted in Journal of Symplectic Geometr
- …