Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NeurSF: Neural Shading Field for Image Harmonization   Image harmonization aims at adjusting the appearance of the foreground to
make it more compatible with the background. Due to a lack of understanding of
the background illumination direction, existing works are incapable of
generating a realistic foreground shading. In this paper, we decompose the
image harmonization into two sub-problems: 1) illumination estimation of
background images and 2) rendering of foreground objects. Before solving these
two sub-problems, we first learn a direction-aware illumination descriptor via
a neural rendering framework, of which the key is a Shading Module that
decomposes the shading field into multiple shading components given depth
information. Then we design a Background Illumination Estimation Module to
extract the direction-aware illumination descriptor from the background.
Finally, the illumination descriptor is used in conjunction with the neural
rendering framework to generate the harmonized foreground image containing a
novel harmonized shading. Moreover, we construct a photo-realistic synthetic
image harmonization dataset that contains numerous shading variations by
image-based lighting. Extensive experiments on this dataset demonstrate the
effectiveness of the proposed method. Our dataset and code will be made
publicly available.

25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-th
9
The categories of this paper are: nlin
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The categories of this paper are: cmp-lg