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- 저자 : dixing LI (검색결과 2 건)
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Improved Algorithm of Association Matching for Pedestrian Tracking in Occlusion Scene
xiaofeng ZHANG,jianlan LIAO,dixing LI,guowei YANG 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.1
In order to improve the association matching of multiple pedestrians in occlusion scene, an improved algorithm is proposed in this paper that combines the similarity matching of pedestrian object’s major color spectrum histogram combination with joint probabilistic data association. The similarity to major color spectrum histogram of pedestrian’s object is calculated between the previous and the frame that current frames in this algorithm. And take the centroid location of pedestrian’s target which is with the most largest similarity to correct the state vector of the JPDA algorithm in the current frame. The experimental results show that the proposed algorithm could make the number of the targets’ label adhesion reduced to 40%, the number of the targets’ label confusion decreased about 33%, the recall rate of targets is increased by 6.8%, and the tracking accuracy is improved by 9.2% compared with the classical JPDA algorithm when the occlusion rate between pedestrians and intensity are not very high.
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Liu, Shude,Ni, Dixing,Li, Hai-Feng,Hui, Kwun Nam,Ouyang, Chu-Ying,Jun, Seong Chan The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.23
<P>Cation substitution is a promising strategy for modulating the structural properties and optimizing the electrochemical performance of spinel cobalt oxide (Co3O4); however, the underlying mechanism of this action induced by different cation substitutions has not yet been clearly addressed. Herein, a systematic investigation is performed to elucidate the effect of cation substitution on the pseudocapacitive performance of spinel cobaltite (MCo2O4; M = Mn, Ni, Cu, and Co) mesoporous nanowires grown on nickel foam (NF). Theoretical and experimental analyses reveal that the substitution of Co by transition metals (<I>i.e.</I>, Mn, Ni, and Cu) in the lattice of Co3O4 can simultaneously improve charge transfer and ion diffusion, thereby exhibiting enhanced electrochemical properties. Herein, as a representative example, MnCo2O4 achieves a high specific capacitance of 2146 F g<SUP>−1</SUP> at a current density of 1 A g<SUP>−1</SUP>, while 92.1% of its initial capacitance is retained after 5000 cycles. An asymmetric supercapacitor with MnCo2O4 as the positive material and activated carbon (AC) as the negative material delivers a high energy density of 56.1 W h kg<SUP>−1</SUP> at a power density of 800 W kg<SUP>−1</SUP>, and a favorable energy density of 29.3 W h kg<SUP>−1</SUP> at a power density as high as 8000 W kg<SUP>−1</SUP>.</P>
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