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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 3 — Feb. 4, 2008
  • pp: 1448–1459

A practical algorithm for learning scene information from monocular video

Lin Zhu, Jie Zhou, Jingyan Song, Zhenlei Yan, and Quanquan Gu  »View Author Affiliations


Optics Express, Vol. 16, Issue 3, pp. 1448-1459 (2008)
http://dx.doi.org/10.1364/OE.16.001448


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Abstract

The estimate of the scene information, such as the region of ground/non-ground, the relative depth of the ground and the unevenness of ground, is important for applications such as video surveillance, mapbuilding and etc. Previous research in this field is based on specific assumptions which are difficult to satisfy in practical situations. In this paper a practical algorithm is proposed to estimate the scene information in monocular video. With the pedestrian detection results for a period of time, the Pedestrian-Scene Map (PS Map), consisting of the average width of a pedestrian and occurrence probability of a pedestrian at each position of the scene, is learned by integrating the pedestrian samples with different sizes at different positions of the scene. Furthermore, the relative depth of ground region, the ground/non-ground region and the unevenness of ground can be measured with PS Map. Experimental results illustrated the proposed method’s effectiveness with stationary uncalibrated camera for unconstrained environment.

© 2008 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.2960) Image processing : Image analysis
(100.6890) Image processing : Three-dimensional image processing
(110.6880) Imaging systems : Three-dimensional image acquisition
(150.6910) Machine vision : Three-dimensional sensing
(150.6044) Machine vision : Smart cameras

ToC Category:
Image Processing

History
Original Manuscript: November 19, 2007
Revised Manuscript: January 2, 2008
Manuscript Accepted: January 17, 2008
Published: January 18, 2008

Citation
Lin Zhu, Jie Zhou, Jingyan Song, Zhenlei Yan, and Quanquan Gu, "A practical algorithm for learning scene information from monocular video," Opt. Express 16, 1448-1459 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-3-1448


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