Real-Time Unwrapping and Rectification of High-Resolution Catadioptric Panoramic Video during Non-Stationary Moving

Abstract:

Catadioptric panoramic vision system has been widely used in many fields, and also plays a very important role in environment perception of unmanned platform especially. However, the resolution of system is not very high, usually less than 5 million pixels at present. Even if the resolution is high, but the unwrapping and rectification of panoramic video is carried out off-line. Further, the system is also applied in stationary state or low stationary moving. This paper proposes an unwrapping and rectification method based on high-resolution catadioptric panoramic vision system used during non-stationary moving. It can segment dynamic circular mark region accurately and get the coordinates of center of circular image real-timely, shorten the time of image processing, meanwhile the coordinates of center and radius of the circular mark region would be obtained, so the image distortion caused by inaccurate center coordinates can be reduced. During image rectification, after achieving radial distortions parameters (K₁, K₂, K₃), decentering distortions parameters (P₁, P₂), and the correction factor that has no physical meanings, we can used those for fitting the rectification polynomial, so the panoramic video can be rectified without distortion.

• Periodical: Applied Mechanics and Materials (Volumes 668-669)
• Pages: 1098-1101
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.668-669.1098
• Online since: October 2014
• Authors: Jian Wang*, Zhen Hai Zhang, Ke Jie Li, Hai Yan Shao, Tao Xu, Shuai Hou, Liang Zhang
• Keywords: Dynamic Circular Marked Region, High-Resolution, Non-Stationary Motion State, Panoramic Video, Real-Time Unwrapping, Rectification

References

[1] Min Zhang and PeiZhi Liu: Journal of Vehicle & Power Technology. Vol. 106(2) (2007), pp.44-51.

[2] Xiao Xiao and GuoGuang Yang: Journal of Optical Instruments. Vol. 29(4) (2007), pp.84-89.

[3] Jie Lei, Xin Du, YunFang Zhu and JiLin Liu: Journal of Optical and Precision Engineering. Vol. 15(10) (2010), pp.1430-1435.

[4] XiongZhu Bu and GuiJuan Li: Journal of Image and Graphics. Vol. 20(9) (2012), pp.2103-2108.

[5] ZhenHai Zhang and KeJie Li: Study on Algorithm for Panoramic Image Basing on High Sensitivity and High Resolution Panoramic Surveillance Camera, Proc. IEEE, 359-364 (2013).

DOI: 10.1109/avss.2013.6636666