Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A vectorized sea horizon edge filter for maritime video processing tasks   The horizon line is a fundamental semantic feature in several maritime video
processing tasks, such as digital video stabilization, camera calibration,
target tracking, and target distance estimation. Visible range Electro-Optical
(EO) sensors capture richer information in the daytime, which often comes with
challenging clutter. The best methods rely on tailored filters to keep,
ideally, only horizon edge pixels. These methods work well but often fail in
the case of edge-degraded horizons. Our first aim is to solve this problem
while taking the real-time constraint into account; we propose a tailored edge
filter that relies on growing line segments with a low edge threshold and
filters them based on their slope, length, and relative position. Next, we
build the filtered edge map by computing Cartesian coordinates of pixels across
line segments that survived the filter. We infer the horizon from the filtered
edge map using line fitting techniques and simple temporal information. We
consider the real-time constraint by vectorizing the computations and proposing
a better way to leverage image downsizing. Extensive experiments on 26,125
visible range frames show that the proposed method achieves significant
robustness while satisfying the real-time constraint.

35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat