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Video-based Height Measurements of Multiple Moving Objects
( Mingxin Jiang ),( Hongyu Wang ),( Tianshuang Qiu ) 한국인터넷정보학회 2014 KSII Transactions on Internet and Information Syst Vol.8 No.9
This paper presents a novel video metrology approach based on robust tracking. From videos acquired by an uncalibrated stationary camera, the foreground likelihood map is obtained by using the Codebook background modeling algorithm, and the multiple moving objects are tracked by a combined tracking algorithm. Then, we compute vanishing line of the ground plane and the vertical vanishing point of the scene, and extract the head feature points and the feet feature points in each frame of video sequences. Finally, we apply a single view mensuration algorithm to each of the frames to obtain height measurements and fuse the multi-frame measurements using RANSAC algorithm. Compared with other popular methods, our proposed algorithm does not require calibrating the camera, and can track the multiple moving objects when occlusion occurs. Therefore, it reduces the complexity of calculation and improves the accuracy of measurement simultaneously. The experimental results demonstrate that our method is effective and robust to occlusion.
Jindi Jiang,Mingxin Wang 강원대학교 인문과학연구소 2019 Journal of Humanities Therapy Vol.10 No.1
Elements of Chinese Cultures, those Confucian one particularly, help Voltaire unveil how the foreign country looks like and meanwhile serve as a crucial means of him in building its vast empire of literature. Through The Orphan of China, are written poetic drama based on Yuan verse The Orphan of Zhao which written by Ji Junxiang. Voltaire had Chinese Cultures and morality of Confucianism greatly propagated. In this drama, the Song Dynasty collapsed, but its conqueror Genghis Khanwa sultimately conquered by the Song cultures and virtues. Voltaire acclaimed the moral and spiritual excellence contained in The Orphan of Zhao and on the other hand satirized the spiritual deprivation and moral for forfeiture then in France, both of which accorded with his acceptance of The Orphan of Zhao. Voltaire presented The Orphan of China on the stage to dramatize elements of Chinese Cultures, and that was not a choice of art but rather that of culture, namely the Chinese moral culture.
Weiming Zhou,Yifan Jiang,Shichang Sun,Mingxin Zhang,Ibrahim Lawan,Gerard Franklyn Fernando,Liwei Wang,Zhanhui Yuan 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.2
A simple one step wet-chemical method assisted by trisodium citrate was employed in the synthesis of BiOBr applied as a photocatalyst. Photocatalytic activity of the BiOBr was investigated for the degradation of Rhodamine B (RhB) dye under visible light irradiation (>420 nm). The results indicated that trisodium citrate is more favorable to the formation of hierarchical architectures and reduces the particle size of BiOBr photocatalyst. BiOBr with hierarchical architectures exhibiting significantly higher catalytic activity than that with ordinary nanostructure. The significant improvement could be attributed to the high specific surface area (24.14m2·g1), average pore sizes (34.09 nm) and average pore volume (0.24 cm3·g1).
Fuwei Li,Jie He,Peng Luo,Haoyu Jiang,Mingxin Liu 전력전자학회 2023 JOURNAL OF POWER ELECTRONICS Vol.23 No.4
This paper presents a quadratic-type high step-up DC–DC converter for renewable energy applications with a continuousinput current. To reduce the number of components while increasing the gain, a quadratic boost converter and two multiplier cells are applied as the primary and secondary circuit with one coupled inductor connected. In addition, the clamp circuit shares its components with both the second boost stage and the voltage multiplier, which increases the power density. As a result, the leakage energy is recycled and the voltage stress can be suppressed. The operation principles and steady-state analyses including loss analysis of the proposed converter are addressed in detail. Compared with relevant existing topologies of quadratic converter, the proposed converter performs a higher voltage gain and a lower power switch stress. To validate the performance, a 200 W experimental prototype is constructed and tested with 20 V of input voltage and 400 V of output voltage, where the highest efficiency is 95.2% and the full-load efficiency is 93.7%. The performance under dynamic conditions is also verified. In the end, an improved topology based on the proposed converter is supplemented.