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헤드마운티드 디스플레이를 활용한 전방위 카메라 기반 영상 렌더링 동기화 시스템
이승준(Seungjoon Lee),강석주(Suk-Ju Kang) 대한전기학회 2018 전기학회논문지 Vol.67 No.6
This paper proposes a novel method for the omnidirectional camera-based image rendering synchronization system using head mounted display. There are two main processes in the proposed system. The first one is rendering 360-degree images which are remotely photographed to head mounted display. This method is based on transmission control protocol/internet protocol(TCP/IP), and the sequential images are rapidly captured and transmitted to the server using TCP/IP protocol with the byte array data format. Then, the server collects the byte array data, and make them into images. Finally, the observer can see them while wearing head mounted display. The second process is displaying the specific region by detecting the user"s head rotation. After extracting the user"s head Euler angles from head mounted display"s inertial measurement units sensor, the proposed system display the region based on these angles. In the experimental results, rendering the original image at the same resolution in a given network environment causes loss of frame rate, and rendering at the same frame rate results in loss of resolution. Therefore, it is necessary to select optimal parameters considering environmental requirements.
이승준(Seungjoon Lee) 대한전자공학회 2017 대한전자공학회 학술대회 Vol.2017 No.6
Laplacian matrix induced by the multi-agent system is studied. In particular, various properties of the transfer function of the Laplacian matrix including relative degree are investigated when measured output is relative information. It is shown that relative degree is related to the shortest path between two nodes.
고이득 방법을 이용한 비선형 동종 다개체 시스템의 상태일치
이승준(Seungjoon Lee),김재용(Jaeyong Kim) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
Consensus of nonlinear high-order multi-agent systems under fixed and undirected communication network is studied. Nonlinear systems consist of Brunovsky form with the addition of nonlinear term. Output feedback algorithm using relative measurement is employed to achieve consensus. Relative output information is filtered using a stable filter to generate control input for each agent. Simulation results for coupled Van der Pol oscillators are given to illustrate proposed algorithm.