Mr. Zhifei Wang Profile

Zhifei Wang

at Beijing Jiaotong Univ

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Author

Publications (4)

Proceedings Article | 19 October 2016 Paper

Application research of rail transit safety protection based on laser detection

Zhifei Wang

Proceedings Volume 10153, 101530E (2016) https://doi.org/10.1117/12.2244605

KEYWORDS: Safety, Laser safety, Probability theory

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SPIE Journal Paper | 22 May 2013

Coupled cross-regression for low-resolution face recognition

Zhifei Wang, Zhenjiang Miao, Yanli Wan, Zhen Tang

JEI, Vol. 22, Issue 02, 023015, (May 2013) https://doi.org/10.1117/12.10.1117/1.JEI.22.2.023015

KEYWORDS: Lawrencium, Facial recognition systems, Curium, Matrices, Databases, Surveillance, Super resolution, Associative arrays, Information science, Image processing

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Proceedings Article | 18 August 2011 Paper

High accuracy ground target location using loitering munitions platforms

Zhifei Wang, Hua Wang, Jing Han

Proceedings Volume 8194, 819423 (2011) https://doi.org/10.1117/12.900519

KEYWORDS: Sensors, Cameras, Digital filtering, Hough transforms, Image filtering, Detection and tracking algorithms, Image processing, Satellite imaging, Earth observing sensors, Satellites

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Precise ground target localization is an interesting problem and relevant not only for military but also for civilian applications, and this is expected to be an emerging field with many potential applications. Ground Target Location Using Loitering Munitions (LM) requires estimation of aircraft position and attitude to a high degree of accuracy, and data derived by processing sensor images might be useful for supplementing other navigation sensor information and increasing the reliability and accuracy of navigation estimates during this flight phase. This paper presents a method for high accuracy ground target localization using Loitering Munitions (LM) equipped with a video camera sensor. The proposed method is based on a satellite or aerial image matching technique. In order to acquire the target position of ground intelligently and rapidly and to improve the localization accuracy estimating the target position jointly with the systematic LM and camera attitude measurement errors, several techniques have been proposed. Firstly, ground target geo-location based on tray tracing was used for comparison against our approach. By proposed methods the calculation from pixel to world coordinates can be done. Then Hough transform was used to image alignment and a median filter was applied for removing small details which are visible from the sensed image but not visible from the reference image. Finally, A novel edge detection method and an image matching algorithm based on bifurcation extraction were proposed. This method did not require accurate knowledge of the aircraft position and attitude and high performance sensors, therefore it is especially suitable for LM which did not have capability to carry accurate sensors due to their limited play weight and power resources. The results of simulation experiments and theory analyzing demonstrate that high accuracy ground target localization is reached with low performance sensors, and achieve timely. The method is used in reconnaissance and surveillance missions, or applicable in any other environment with a relevantly structured clutter.

SPIE Journal Paper | 1 April 2011

Color harmonization for images

Zhen Tang, Zhenjiang Miao, Yanli Wan, Zhifei Wang

JEI, Vol. 20, Issue 02, 023001, (April 2011) https://doi.org/10.1117/12.10.1117/1.3574097

KEYWORDS: Image segmentation, Spatial coherence, Image processing, Image processing algorithms and systems, Composites, Visualization, Chemical elements, Skin, Optimization (mathematics), Image enhancement

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