Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pik-Fix: Restoring and Colorizing Old Photo   Restoring and inpainting the visual memories that are present, but often
impaired, in old photos remains an intriguing but unsolved research topic.
Decades-old photos often suffer from severe and commingled degradation such as
cracks, defocus, and color-fading, which are difficult to treat individually
and harder to repair when they interact. Deep learning presents a plausible
avenue, but the lack of large-scale datasets of old photos makes addressing
this restoration task very challenging. Here we present a novel reference-based
end-to-end learning framework that is able to both repair and colorize old and
degraded pictures. Our proposed framework consists of three modules: a
restoration sub-network that conducts restoration from degradations, a
similarity sub-network that performs color histogram matching and color
transfer, and a colorization subnet that learns to predict the chroma elements
of images that have been conditioned on chromatic reference signals. The
overall system makes uses of color histogram priors from reference images,
which greatly reduces the need for large-scale training data. We have also
created a first-of-a-kind public dataset of real old photos that are paired
with ground truth "pristine" photos that have been that have been manually
restored by PhotoShop experts. We conducted extensive experiments on this
dataset and synthetic datasets, and found that our method significantly
outperforms previous state-of-the-art models using both qualitative comparisons
and quantitative measurements.

29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph