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A Geometric Particle Filter for Template-Based Visual Tracking
Junghyun Kwon,Hee Seok Lee,Park, Frank C.,Kyoung Mu Lee IEEE 2014 IEEE transactions on pattern analysis and machine Vol.36 No.4
<P>Existing approaches to template-based visual tracking, in which the objective is to continuously estimate the spatial transformation parameters of an object template over video frames, have primarily been based on deterministic optimization, which as is well-known can result in convergence to local optima. To overcome this limitation of the deterministic optimization approach, in this paper we present a novel particle filtering approach to template-based visual tracking. We formulate the problem as a particle filtering problem on matrix Lie groups, specifically the three-dimensional Special Linear group SL(3) and the two-dimensional affine group Aff(2). Computational performance and robustness are enhanced through a number of features: (i) Gaussian importance functions on the groups are iteratively constructed via local linearization; (ii) the inverse formulation of the Jacobian calculation is used; (iii) template resizing is performed; and (iv) parent-child particles are developed and used. Extensive experimental results using challenging video sequences demonstrate the enhanced performance and robustness of our particle filtering-based approach to template-based visual tracking. We also show that our approach outperforms several state-of-the-art template-based visual tracking methods via experiments using the publicly available benchmark data set.</P>
임성무(Sung-Mu Lim),권용석(Yong-Seok Kwon),송상빈(Sang-Bin Song),여인선(In-Seon Yeo) 한국조명·전기설비학회 2003 한국조명·전기설비학회 학술대회논문집 Vol.2003 No.-
This paper analyzes the effects of various operating voltages on the electrical and light output characteristics of 20mW(5mm-φ), 1W and 5W high-power RGB LEDs. Operating voltages of three types are compared on a simple LED circuit: DC, full-wave rectified DC, and square-wave DC. As a result, it is found that the 1W and 5W high-power LEDs should be provided with appropriate heat sinks that hold down the increase of junction temperature. As for the operating efficiency the case of full-wave rectification gives the highest value.
Baek, Seol,Kwon, Seung-Ryong,Yeon, Song Yi,Yoon, Sun-Heui,Kang, Chung Mu,Han, Seok Hee,Lee, Dahye,Chung, Taek Dong American Chemical Society 2018 ANALYTICAL CHEMISTRY - Vol.90 No.7
<P>We suggest an electrochemiluminescence (ECL)-sensing platform driven by ecofriendly, disposable, and miniaturized reverse electrodialysis (RED) patches as an electric power source. The flexible RED patches composed of ion-exchange membranes (IEMs) can produce voltage required for ECL sensing by simply choosing the appropriate number of IEMs and the ratio of salt concentrations. We integrate the RED patch with a bipolar electrode on the microfluidic chip to demonstrate the proof-of-concept, i.e., glucose detection in the range of 0.5-10 mM by observing ECL emissions with naked eyes. The miniaturized RED-powered biosensing system is widely applicable for electrochemical-sensing platforms. This is expected to be a solution for practical availability of battery-free electrochemical sensors for disease diagnosis in developing countries.</P> [FIG OMISSION]</BR>