Prof. Yongjun Zhang Profile

Prof. Yongjun Zhang

at Wuhan Univ

SPIE Involvement:

Author

SPIE Journal Paper | 7 February 2017

Object-based change detection method using refined Markov random field

Daifeng Peng, Yongjun Zhang

JARS, Vol. 11, Issue 01, 016024, (February 2017) https://doi.org/10.1117/12.10.1117/1.JRS.11.016024

KEYWORDS: Image fusion, Image segmentation, Magnetorheological finishing, Expectation maximization algorithms, Data modeling, Distance measurement, Feature extraction, Remote sensing, Multispectral imaging, Calibration

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Proceedings Article | 14 May 2014 Paper

Technologies and system for automatic generation of advanced geo-spatial products with Chinese satellite imagery

Yongjun Zhang, Bo Wang, Jin Yu, Qi Chen, Yansong Duan, Yong Zhang, Mingwei Sun, Shunping Ji

Proceedings Volume 9158, 91580D (2014) https://doi.org/10.1117/12.2064064

KEYWORDS: Satellites, Satellite imaging, Image processing, Image fusion, Earth observing sensors, Databases, Orthophoto maps, Remote sensing, Image registration, Data processing

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As an advanced technology, satellite remote sensing has been applied in a variety of fields and has brought numerous social benefits. This paper introduces a new operational satellite imagery processing system and conducts a case study using it by processing ZY-02C and ZY-3 satellite imagery. By way of this case study, this paper proposes a workflow involving the key generation technologies with fully automatic generation of advanced remote sensing products, such as the digital elevation model (DEM), the digital orthophoto map (DOM), and the high-resolution color-fused image. The proposed workflow in this system tackles the key practical issues related to the domestic satellite imagery process, such as low processing efficiency, low utilization, poor integration, etc. This system utilizes the following key generation technologies: automatic registration between the satellite imagery and the existing multi-geographic data, strip aerial triangulation of three-line array satellite images, multi-sensor image registration and fusion, dense matching of photogrammetric point clouds, and automatic correct splicing of wide range images. The proposed process system consists of two parts. The first part is the creation of a geographic information production mode with no manual intervention. This mode aims to improve the accuracy and efficiency of mass domestic satellite images to produce highly precise orientation by using global public basic geographic information databases like Map World, Google Earth, etc. The second part is the design of a workflow to ensure the stability of the production time and quality of domestic satellite imagery's advance product generation. Finally, this paper also discusses the accuracy of the process of image orientation and the precision of advanced products such as high-resolution color-fused image (ZY-02C), DEM (ZY-3), and DOM (ZY-3). The results show that the products of the proposed process system meet the requirements in both efficiency and quality, and the proposed process system is ready for future real-time domestic remote satellite imagery generation.

Proceedings Article | 23 November 2011 Paper

Methods of orientating different resolution satellite images with the existing vector maps

Luping Lu, Yong Zhang, Yongjun Zhang, Zuxun Zhang

Proceedings Volume 8006, 80061E (2011) https://doi.org/10.1117/12.902432

KEYWORDS: Roads, Earth observing sensors, Satellites, Image resolution, Satellite imaging, High resolution satellite images, Feature extraction, Photogrammetry, Remote sensing, Associative arrays

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Proceedings Article | 23 November 2011 Paper

Registration of CBERS-02B satellite imagery in quick GIS updating

Zuxun Zhang, Luping Lu, Pengjie Tao, Yong Zhang, Yongjun Zhang

Proceedings Volume 8006, 80060C (2011) https://doi.org/10.1117/12.901652

KEYWORDS: Satellites, Earth observing sensors, Satellite imaging, Image processing, Geographic information systems, Charge-coupled devices, Image registration, Image resolution, High resolution satellite images, Distortion

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Proceedings Article | 23 November 2011 Paper

Aerial triangulation over urban areas with control points auto- extracted from existing AT results

Yong Zhang, Tao Ke, Yongjun Zhang

Proceedings Volume 8006, 80061R (2011) https://doi.org/10.1117/12.901880

KEYWORDS: Geographic information systems, Photography, Airborne remote sensing, Image processing, Associative arrays, Remote sensing, Analytical research, Distortion, Roads, Photogrammetry

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Proceedings Article | 25 September 2003 Paper

3D reconstruction of industrial sheetmetal parts with hybrid point-line photogrammetry

Yongjun Zhang, Zuxun Zhang, Jianqing Zhang

Proceedings Volume 5286, (2003) https://doi.org/10.1117/12.539988

KEYWORDS: 3D modeling, Photogrammetry, Image segmentation, Computer aided design, 3D image reconstruction, Solid modeling, Optical inspection, Inspection, CCD cameras, 3D image processing

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Proceedings Article | 22 May 2003 Paper

Camera calibration technique with planar scenes

Yongjun Zhang, Zuxun Zhang, Jianqing Zhang

Proceedings Volume 5011, (2003) https://doi.org/10.1117/12.477506

KEYWORDS: Cameras, Calibration, Distortion, Photogrammetry, Machine vision, Inspection, Computer vision technology, Reverse engineering, Curium, Imaging systems

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Showing 5 of 7 publications

Conference Committee Involvement (1)

International Conference on Earth Observation Data Processing and Analysis

28 December 2008 | Wuhan, China

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