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실시간 미니드론 카메라 영상을 기반으로 한 얼굴 인식 시스템 개발
김성호 중소기업융합학회 2019 융합정보논문지 Vol.9 No.12
In this paper, I propose a system development methodology that accepts images taken by camera attached to drone in real time while controlling mini drone and recognize and confirm the face of certain person. For the development of this system, OpenCV, Python related libraries and the drone SDK are used. To increase face recognition ratio of certain person from real-time drone images, it uses Deep Learning-based facial recognition algorithm and uses the principle of Triples in particular. To check the performance of the system, the results of 30 experiments for face recognition based on the author's face showed a recognition rate of about 95% or higher. It is believed that research results of this paper can be used to quickly find specific person through drone at tourist sites and festival venues. 본 논문에서는 미니 드론을 조종하면서 드론에 부착된 카메라가 촬영하는 영상을 실시간으로 받아들여 특정인의 얼굴을 인식하여 확인시켜주는 시스템 개발 방법론을 제안한다. 본 시스템의 개발을 위해서는 OpenCV, Python 관련 라이브러리 및 드론 SDK 등을 사용한다. 실시간 드론 영상으로부터 특정인의 얼굴 인식 비율을 높이기 위해서는 딥러닝 기반의 얼굴 인식 알고리즘을 사용하며 특히 Triples 원리를 활용한다. 시스템의 성능을 확인하기 위해 저자 얼굴을 기준으로 30회 동안 얼굴 인식 실험을 수행한 결과 약 95% 이상의 인식률을 보여주었다. 본 논문의 연구 결과물은 관광지, 축제 행사장 등에서 특정인을 드론으로 빠르게 찾기 위한 목적으로 사용할 수 있을 것으로 판단된다.
K.W. Kim(김광우),K.J. Woo(우관제),G.J. Park(박경진) 한국철도학회 2012 한국철도학회 학술발표대회논문집 Vol.2012 No.5
The railway vehicle industry faces increasing pressure to enhance performance and safety while minimizing weight, manufacturing cost and fuel consumption. Structural optimization can be an effective method to design the structure of a railway-car body. In recent years, there have been many applications that design the structure of a vehicle body with aluminum material. The mass and stiffness of the structure can be determined by changing the shape and thickness of the webs and ribs. In this research, a design process based on structural optimization is proposed to design the rib shape of each unit and the entire thickness distribution of an aluminum railway-car body. The process for a systematic design of an car body is established to reduce the weight while sufficient strength is kept.
곽현덕(H. D. Kwak),전성민(S. M. Jeon),김진한(Jinhan Kim),조광래(G. R. Cho),김선용(S.Y. Kim),우관제(K. J. Woo) 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.38 No.-
In a turbopump cryogenic ball bearings are used to carry static and hydraulic loads, and these ball bearings must stand up to high load and speed in cryogenic circumstance. Verification of bearing performance is crucial to successful development of a turbopump. In this paper, focusing on the turbopump under developing by KARI, the performances of 203 and 207 bearings are verified through the series of tests simulating the real operating condition of turbopump.