Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detection of symmetry using a crystallographic image processing
  algorithm   This article presents an automated method to quantify and detect symmetry
elements in 2D patterns by means of image processing. Escher's woodcuts, a
widely recognized didactic tool for crystallographic education of students,
were used to demonstrate this approach. We also discuss peculiarities in the
detection of black and white symmetry, color symmetry, and detection of the
"hidden" and "broken" symmetry elements by means of the phase origin map
approach.

29
The categories of this paper are: funct-an
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ