Mr. Tianyu Ren Profile

Tianyu Ren

at Aerospace Information Research Institute

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Proceedings Article | 5 March 2018 Paper

The research based on intelligent night-time elimination of "red explosion" and "white explosion" vehicle license plate capturing and identifying system

Tian-Yu Ren, Qing-Duo Duanmu, Jing Liu, Bo-Qi Wu

Proceedings Volume 10710, 107100F (2018) https://doi.org/10.1117/12.2316993

KEYWORDS: Cameras, Image segmentation, Image processing, Image filtering, Imaging systems, Laser applications, Roads, Optical filters, Intelligence systems, Detection and tracking algorithms

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At night, high-speed road/all levels of road electronic cameras need to pass the white light flash can be used to obtain the road vehicle license plate and car appearance and the other related information, in order to solve the problems of the drivers’ short dazzle caused by the flash of the camera, this paper shows a novel method to eliminate the "red explosion" and "white explosion" dazzle vehicle license plate capture and recognition system. This paper is based on the inconsistent principle of the absorption characteristics of the reflective film layer dye in the overlapping reflection process of the multispectral spectrums. The relationship between the wavelength of the reflective film and the back layer dye in different wavelength and the absorption/reflection is analyzed, and a dual-band active illumination method is developed. The system utilizes the visual features of human eyes in the sensitive insensitive area near infrared 390 nm~810 nm band, combining the enhanced Hough and Canny operator to preprocess the captured images, effectively obtains the license information of the fast moving vehicle at night or low illumination, and accurately locates the vehicle contour features, The high contour gray color rendering with the wavelet and Fourier filtering is used to distinguish the authenticity of the license plate quickly. To achieve the rapid statistics on the number of vehicles and containers on ground mobile vehicles and logistics sites, and provide a reliable technical guarantee for road security, because of its small weight and high intelligence, it’s suitable for a variety of loading installations, and has a wide application foreground in the future.

Proceedings Article | 5 March 2018 Paper

The UAV take-off and landing system used for small areas of mobile vehicles

Tian-Yu Ren, Qing-Duo Duanmu, Bo-Qi Wu

Proceedings Volume 10710, 107100M (2018) https://doi.org/10.1117/12.2309475

KEYWORDS: Navigation systems, Control systems, Unmanned aerial vehicles, Telecommunications, Digital signal processing, Cameras, Visualization, Detection and tracking algorithms, Infrared radiation, RF communications

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In order to realize an UAV formation cluster system based on the current GPS and the fault and insufficiency of Beidou integrated navigation system in strong jamming environment。Due to the impact of the compass on the plane crash, navigation system error caused by the mobile area to help reduce the need for large landing sites and not in the small fast moving area to achieve the reality of the landing. By using Strapdown inertial and all-optical system to form Composite UAV flight control system, the photoelectric composite strapdown inertial coupling is realized, and through the laser and microwave telemetry link compound communication mechanism, using all-optical strapdown inertial and visual navigation system to solve the deviation of take-off and landing caused by electromagnetic interference, all-optical bidirectional data link realizes two-way position correction of landing site and aircraft, thus achieves the accurate recovery of UAV formation cluster in the mobile narrow area which the traditional navigation system can't realize. This system is a set of efficient unmanned aerial vehicle Group Take-off/descending system, which is suitable for many tasks, and not only realizes the reliable continuous navigation under the complex electromagnetic interference environment, moreover, the intelligent flight and Take-off and landing of unmanned aerial vehicles relative to the fast moving and small recovery sites in complex electromagnetic interference environment can not only improve the safe operation rate of unmanned aerial vehicle, but also guarantee the operation safety of the aircraft, and the more has important social value for the application foreground of the aircraft.

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