3,838 research outputs found
UA-DETRAC: A New Benchmark and Protocol for Multi-Object Detection and Tracking
In recent years, numerous effective multi-object tracking (MOT) methods are
developed because of the wide range of applications. Existing performance
evaluations of MOT methods usually separate the object tracking step from the
object detection step by using the same fixed object detection results for
comparisons. In this work, we perform a comprehensive quantitative study on the
effects of object detection accuracy to the overall MOT performance, using the
new large-scale University at Albany DETection and tRACking (UA-DETRAC)
benchmark dataset. The UA-DETRAC benchmark dataset consists of 100 challenging
video sequences captured from real-world traffic scenes (over 140,000 frames
with rich annotations, including occlusion, weather, vehicle category,
truncation, and vehicle bounding boxes) for object detection, object tracking
and MOT system. We evaluate complete MOT systems constructed from combinations
of state-of-the-art object detection and object tracking methods. Our analysis
shows the complex effects of object detection accuracy on MOT system
performance. Based on these observations, we propose new evaluation tools and
metrics for MOT systems that consider both object detection and object tracking
for comprehensive analysis.Comment: 18 pages, 11 figures, accepted by CVI
Rate of the phase transition for a charged anti-de Sitter black hole
Phase transition is a core content of black hole thermodynamics. This study
adopted the Kramer's escape rate method for describing the Brownian motion of
particles in an external field to investigate the intensity of the phase
transition between small and large black hole states. Some existing studies
mostly focused on the formal analysis of the thermodynamic phase transition of
black holes, but they neglected the detailed description of the phase
transition process. Our results show that the phase transition between small
and large black holes for charged anti-de Sitter (AdS) black holes presents
serious asymmetric features, and the overall process is dominated by the
transition from a small black hole to a large black hole. This study filled a
research gap of a stochastic process analysis on the issue of the first-order
phase transition rate in the AdS black hole.Comment: 8 pages, 3 figures, to appear in SCIENCE CHINA Physics, Mechanics &
Astronomy (http://engine.scichina.com/doi/10.1007/s11433-022-2022-6
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