Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Identity-Preserving Pose-Robust Face Hallucination Through Face Subspace
  Prior   Over the past few decades, numerous attempts have been made to address the
problem of recovering a high-resolution (HR) facial image from its
corresponding low-resolution (LR) counterpart, a task commonly referred to as
face hallucination. Despite the impressive performance achieved by
position-patch and deep learning-based methods, most of these techniques are
still unable to recover identity-specific features of faces. The former group
of algorithms often produces blurry and oversmoothed outputs particularly in
the presence of higher levels of degradation, whereas the latter generates
faces which sometimes by no means resemble the individuals in the input images.
In this paper, a novel face super-resolution approach will be introduced, in
which the hallucinated face is forced to lie in a subspace spanned by the
available training faces. Therefore, in contrast to the majority of existing
face hallucination techniques and thanks to this face subspace prior, the
reconstruction is performed in favor of recovering person-specific facial
features, rather than merely increasing image quantitative scores. Furthermore,
inspired by recent advances in the area of 3D face reconstruction, an efficient
3D dictionary alignment scheme is also presented, through which the algorithm
becomes capable of dealing with low-resolution faces taken in uncontrolled
conditions. In extensive experiments carried out on several well-known face
datasets, the proposed algorithm shows remarkable performance by generating
detailed and close to ground truth results which outperform the
state-of-the-art face hallucination algorithms by significant margins both in
quantitative and qualitative evaluations.

31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg