Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A fast algorithm for the detection of faint orbital debris tracks in
  optical images   Moving objects leave extended tracks in optical images acquired with a
telescope that is tracking stars or other targets. By searching images for
these tracks, one can obtain statistics on populations of space debris in Earth
orbit. The algorithm described here combines matched filtering with a Fourier
implementation of the discrete Radon transform and can detect long linear
tracks with high sensitivity and speed. Monte-Carlo simulations show that such
tracks, in a background of Poisson random noise, can be reliably detected even
if they are invisible to the eye. On a 2.2 GHz computer the algorithm can
process a 4096 x 4096-pixel image in less than a minute.

25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio