Ms. Yuan Qi Profile

Yuan Qi

at Xi'an Institute of Applied Optics

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Publications (2)

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Proceedings Article | 30 April 2024 Paper

The survey of one-stage anchor-free real-time object detection algorithms

Peng He, Weidong Chen, Lan Pang, Weiguo Zhang, Yitian Wang, Weidong Huang, Qi Han, Xiaofeng Xu, Yuan Qi

Proceedings Volume 13156, 1315602 (2024) https://doi.org/10.1117/12.3012931

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With the improvement of computer computing power, the object detection algorithms based on deep neural network has ushered in vigorous development, and has been widely used in industry, agriculture, medicine, military and other fields. One-stage object detection algorithms shows the superiority in real-time detection compared to other object detection algorithms such as two-stage object detectors or ViT-based detectors. At the same time, more and more anchor-free detectors show the advanced nature of anchor-free algorithms compared to anchor-based detectors. In this paper, we review the one-stage anchor-free real-time object detection algorithms in recent years, and analyze the application scenarios and optimization strategies of future object detection algorithms. Firstly, the principle and advantages of anchor-free object detection algorithms and one-stage object detection algorithm are introduced. Secondly, the network structure and innovation of anchor-free object detection algorithms in recent years are summarized. Finally, the possible development direction and trend of one-stage anchor-free real-time object detection algorithms in the future are proposed.

Proceedings Article | 12 March 2021 Paper

The design and simulation of a flexible support structure reflector mirror for IRST system

Yuan Qi, Weidong Huang, Huilin Wang, Qinqing Xu, Longyang Kong, Bing Yang

Proceedings Volume 11763, 117637I (2021) https://doi.org/10.1117/12.2587451

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The core optical component of a composite IRST system is a scanning space mirror component, which is the mirror which shape of optical reflector possessing large flakiness ratio, which always effected by the wide-range temperature and harsh environment (especially in – 45°C）in optical system. To suppress the deformation, a flexible support structure for the reflector is designed in this paper. Based on the flexible support principle and thermodynamics theory, a new flexible support structure is designed for small-light-strip space reflector. A flexible support structure was proposed to keep the surface figure accuracy under temperature change load and 0.06mm installation error cases. By adopting finite element analysis software, the mirror component was analyzed. And some experiments are carried on the optical reflector system in-45°C and 0.06mm forced linear displacement. The result shows that the accuracy of reflector surface remains 0.2λPV（λ＝632.8nm, peak-to-valley. These results demonstrate that the novel flexible supporting structure design satisfies the application environment and space requirements.

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