Mr. Biao Liu Profile

Biao Liu

at Huayin Ordnance Test Ctr

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Publications (7)

Proceedings Article | 10 May 2023 Paper

Consistency analysis method of optical multispectral imaging based on wake simulation

Qiuping Hu, Yu Wang, Hua Zhang, Bin Li, Biao Liu, Yuanyuan Zhou

Proceedings Volume 12554, 1255416 (2023) https://doi.org/10.1117/12.2652156

KEYWORDS: Rockets, Visible radiation, Image segmentation, Combustion, Multispectral imaging, Imaging systems, Computer simulations, Long wavelength infrared, Numerical simulations, Medium wave

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In the field of conventional weapon test and identification, optical measurement is often used to measure the exterior ballistic parameters of targets. With the variety of measuring equipment and measuring bands such as visible light/medium-wave/long-wave, the profile/shape and radiation/luminance distribution of the exhaust plume target imaging in the optical measurement system are great different, so that the target interpretation position changes greatly with the change of the exhaust plume .The variation of the plume depends on the flight state of the weapon system, inmost cases there is no prior data support, we judge by the experience of the surveyors, so this processing mode affects the credibility of the measurement data, especially in the case of high precision requirements such as characteristic parameter and miss distance processing. Aiming at the Consistency problem of multispectral imaging data of the exhaust plume target, using the inversion imaging method of fluid numerical simulation to characterize the multispectral imaging of the weapon system under various flight states, and theoretically evaluate the imaging deviation. Whether this method is feasible depends on accuracy of the wake simulation calculation meets the actual needs. For this reason, the wake combustion products and their components of a certain type of rocket are studied. Based on the plume component analysis, establish a plume directional radiation calculation model. Through the close acquisition of the visible light/ medium-wave/long-wave images in the initial stage of the rocket, the profile characteristic parameters are compared with the simulated radiation images obtained by numerical simulation. The results show that ,the main body of the exhaust plume edge error is located within ± 20%, and the comparison result in the core area of the exhaust plume is better than ±10%,so the profile data of the core area can be used as the reference for consistency analysis. This method breaks through the current situation of systematic error estimation based on experience in theory, and has high guiding significance for the evaluation of the processing accuracy of external ballistic test data.

Proceedings Article | 4 April 2023 Paper

Technology system design of multi-state moving target detection and tracking in complex environment

Zili Tang, Biao Liu, Yu Ji, Weiqiang Wang

Proceedings Volume 12617, 1261761 (2023) https://doi.org/10.1117/12.2666641

KEYWORDS: Imaging systems

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Proceedings Article | 1 March 2019 Paper

Monocular pose measurement using contour image length matching in range

Xiaoli Hu, Minggang Tang, Haiying Wu, Yulun Zhang, Biao Liu, Weiguang Zhang

Proceedings Volume 10846, 108460H (2019) https://doi.org/10.1117/12.2503540

KEYWORDS: Error analysis, Imaging systems, Feature extraction, Cameras, Nose, Control systems, Information visualization, Target acquisition, Transition metals, Computing systems

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Proceedings Article | 12 December 2018 Paper

Design of atmospheric polarization transmission analysis system based on multi information fusion

Xiaolong Rong, Bin Li, Taohu Xu, Pengzu Liu, Jiang You, Biao Liu, Haiying Wu

Proceedings Volume 10846, 1084623 (2018) https://doi.org/10.1117/12.2505335

KEYWORDS: Polarization, Atmospheric modeling, Light scattering, Atmospheric particles, Scattering, Imaging systems, Air contamination, Rayleigh scattering, Image processing, Data modeling

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With the continuous research of polarization technology, how to apply polarization enhancement to time-varying scene has become a difficult problem at present. This problem is reduced to the fast and accurate acquisition of atmospheric polarization transmission characteristics.This method can obtain polarization transmission parameters by multi-scale particle modeling, laser polarization state measurement and scene polarization information extraction. It can provide a solution for the design of polarization enhancement system by combining the characteristics of various methods. Firstly, the multi-scale particle air transmission is modeled, the composition and transmission law of particles are analyzed, the transmission model is established, and the haze particles are classified by microimaging. Then, the polarization data of the atmosphere are measured by laser transmission, and three kinds of color laser are selected, and the influence of the atmosphere on the polarization state is measured in conjunction with the polarizer. The three colors cover the visible light range, and can get the typical polarization characteristics of atmospheric transmission. Besides, we use camera polarization imaging to extract the polarization state of atmospheric transmission. Through the combination imaging of multi cameras and multi polarizers, polarization transmission data of polarized state parameters and distance are obtained. Finally, based on the combination of the three methods, we analyze the results of atmospheric polarization transmission. The atmospheric propagation model provides the change rule. The laser polarization state can get the typical fast changing transmission data, and the atmospheric background imaging can get the steady state transmission result. Through multi information fusion, the laser polarization state based data and the particle transmission model are combined to obtain the wide band transmission law, and the image extraction results are corrected to realize the atmospheric transmission analysis. Using the technical route proposed in this paper, a prototype of atmospheric polarization transmission analysis system is designed. As the key component of the polarization enhancement imaging device, the integrated design of hardware and software is carried out. It can be applied to the use of polarization imaging in time-varying scenes, which has a guiding significance for improving the effect of polarization imaging.

Proceedings Article | 20 February 2018 Paper

Research on real-time scene simulation based on multi-resolution texture mapping

Biao Liu, Sanxi Zhang, Haiying Wu, Peng Yue, Yinghui Wen

Proceedings Volume 10697, 1069725 (2018) https://doi.org/10.1117/12.2315367

KEYWORDS: Image resolution, Volume rendering, Computer simulations, Data modeling, Data storage, Scene simulation, Image compression, Image processing, Electro optical modeling, Visualization

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Proceedings Article | 20 February 2018 Paper

Research on simulation technology of full-path infrared tail flame tracking of photoelectric theodolite in complicated environment

Hai-ying Wu, San-xi Zhang, Biao Liu, Peng Yue, Ying-hui Weng

Proceedings Volume 10697, 1069716 (2018) https://doi.org/10.1117/12.2311834

KEYWORDS: Infrared radiation, Rockets, Infrared imaging, Particle systems, Particles, Computer simulations, Imaging systems, Sensors, Infrared technology, Signal processing

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Proceedings Article | 8 October 2015 Paper

Videometrics technology of flyers' pose

Xiaoli Hu, Xiuqin Su, Sanxi Zhang, Biao Liu, Zhiqiang Zhou

Proceedings Volume 9677, 96770V (2015) https://doi.org/10.1117/12.2199225

KEYWORDS: Weapons, Cameras, Optical testing, Integrated optics, Radar, 3D modeling, Device simulation, Reliability, Process modeling, Image segmentation

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