Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Keep It Real: a Window to Real Reality in Virtual Reality   This paper proposed a new interaction paradigm in the virtual reality (VR)
environments, which consists of a virtual mirror or window projected onto a
virtual surface, representing the correct perspective geometry of a mirror or
window reflecting the real world. This technique can be applied to various
videos, live streaming apps, augmented and virtual reality settings to provide
an interactive and immersive user experience. To support such a
perspective-accurate representation, we implemented computer vision algorithms
for feature detection and correspondence matching. To constrain the solutions,
we incorporated an automatically tuning scaling factor upon the homography
transform matrix such that each image frame follows a smooth transition with
the user in sight. The system is a real-time rendering framework where users
can engage their real-life presence with the virtual space.

6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org