Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detecting Dominant Vanishing Points in Natural Scenes with Application
  to Composition-Sensitive Image Retrieval   Linear perspective is widely used in landscape photography to create the
impression of depth on a 2D photo. Automated understanding of linear
perspective in landscape photography has several real-world applications,
including aesthetics assessment, image retrieval, and on-site feedback for
photo composition, yet adequate automated understanding has been elusive. We
address this problem by detecting the dominant vanishing point and the
associated line structures in a photo. However, natural landscape scenes pose
great technical challenges because often the inadequate number of strong edges
converging to the dominant vanishing point is inadequate. To overcome this
difficulty, we propose a novel vanishing point detection method that exploits
global structures in the scene via contour detection. We show that our method
significantly outperforms state-of-the-art methods on a public ground truth
landscape image dataset that we have created. Based on the detection results,
we further demonstrate how our approach to linear perspective understanding
provides on-site guidance to amateur photographers on their work through a
novel viewpoint-specific image retrieval system.

20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph