Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Multi-Strand Graph for a PTZ Tracker   High-resolution images can be used to resolve matching ambiguities between
trajectory fragments (tracklets), which is one of the main challenges in
multiple target tracking. A PTZ camera, which can pan, tilt and zoom, is a
powerful and efficient tool that offers both close-up views and wide area
coverage on demand. The wide-area view makes it possible to track many targets
while the close-up view allows individuals to be identified from
high-resolution images of their faces. A central component of a PTZ tracking
system is a scheduling algorithm that determines which target to zoom in on.
  In this paper we study this scheduling problem from a theoretical
perspective, where the high resolution images are also used for tracklet
matching. We propose a novel data structure, the Multi-Strand Tracking Graph
(MSG), which represents the set of tracklets computed by a tracker and the
possible associations between them. The MSG allows efficient scheduling as well
as resolving -- directly or by elimination -- matching ambiguities between
tracklets. The main feature of the MSG is the auxiliary data saved in each
vertex, which allows efficient computation while avoiding time-consuming graph
traversal. Synthetic data simulations are used to evaluate our scheduling
algorithm and to demonstrate its superiority over a na\"ive one.

27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg