http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Tracking and Face Recognition of Multiple People Based on GMM, LKT and PCA
이원오,박영호,이의철,이희경,박강령 한국멀티미디어학회 2012 멀티미디어학회논문지 Vol.15 No.4
In intelligent surveillance systems, it is required to robustly track multiple people. Most of the previous studies adopted a Gaussian mixture model (GMM) for discriminating the object from the background. However, it has a weakness that its performance is affected by illumination variations and shadow regions can be merged with the object. And when two foreground objects overlap, the GMM method cannot correctly discriminate the occluded regions. To overcome these problems, we propose a new method of tracking and identifying multiple people. The proposed research is novel in the following three ways compared to previous research: First, the illuminative variations and shadow regions are reduced by an illumination normalization based on the median and inverse filtering of the L*a*b* image. Second, the multiple occluded and overlapped people are tracked by combining the GMM in the still image and the Lucas-Kanade-Tomasi (LKT) method in successive images. Third, with the proposed human tracking and the existing face detection & recognition methods, the tracked multiple people are successfully identified. The experimental results show that the proposed method could track and recognize multiple people with accuracy.
Catecholamine-based Wire-type Supercapacitors
이원오 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
Due to the poor surface area to store electrical charges and ions, the electrochemical performance of carbon fibers (μ-CFs) for supercapacitors is limited. The decoration of the carbon nanowire arrays on μ-CF surface was performed to increase the surface area for storage of electrical charge and the chemical active sites for the pseudo-capacitive reactions. In order to achieve this, zinc oxide (ZnO) nanowire arrays were hydrothermally grown on the μ-CF surface and then, polydopamine (pDA) was coated on ZnO nanowires. Finally, high temperature annealing was performed to carbonize pDA coating layers, which leads to construct carbon nanowire (CNW) arrays. For higher energy density, manganese oxide (MnO<sub>x</sub>) nanoparticles which are considered to be the most attractive oxide material owing to high abundance of Mn, were deposited on the carbonized pDA nanowire arrays.