Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Face Recognition Techniques: A Survey   Nowadays research has expanded to extracting auxiliary information from
various biometric techniques like fingerprints, face, iris, palm and voice .
This information contains some major features like gender, age, beard,
mustache, scars, height, hair, skin color, glasses, weight, facial marks and
tattoos. All this information contributes strongly to identification of human.
The major challenges that come across face recognition are to find age & gender
of the person. This paper contributes a survey of various face recognition
techniques for finding the age and gender. The existing techniques are
discussed based on their performances. This paper also provides future
directions for further research.

32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
9
The categories of this paper are: nlin