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고창환(Chang Hwan Ko),정회경(Hoe Kyung Jung),이수연(Soo Youn Lee) 한국정보과학회 1992 정보과학회논문지 Vol.19 No.4
본 논문은 이기종 그래픽 시스템간의 그래픽 정보의 교환 및 저장을 위한 국제 표준안인 CGM(Computer Graphics Metafile)을 지원하는 CGM 환경 구축에 관한 연구이다. CGM 형식의 그래픽 정보를 이진 형식으로 입출력하기 위한 변환기, 즉 부호기와 복호기를 연구 구현하였으며 또한 디스플레이상에서 그래픽 정보의 표현 및 조작을 할 수 있는 CGM 편집기를 X 윈도우 및 Motif 상에서 구현하였다. This paper describes an establishment of the CGM(Computer Graphics Metafile) environment, which allows to store and transfer the picture description information between the heterogeneous graphics systems. The CGM environment includes an encoder and a decorder to support the picture information in the binary coding. A CGM editors is also designed to present and manipulate the pictures in CGM format. X window system and Motif have been adopted to achived user friendly interface.
연구논문 : KOMPSAT-2 위성영상을 이용한 불투수지도작성 방법에 관한 실증연구
배다혜 ( Da Hye Bae ),이재일 ( Jae Yil Lee ),고창환 ( Chang Hwan Ko ),하성룡 ( Sung Ryong Ha ) 한국환경영향평가학회 2011 환경영향평가 Vol.20 No.5
Impervious surface affects urban climate, flood, and water pollution and has important role as basic data for urban planning and environmental and resources management uses. With a high paved rate, increased quantity of the outflown water and brings urban flooding during a heavy rain. Moreover, these non-point source pollution is getting increased the water pollution. In this regard, it is definitely important to research and keep monitoring the current situation of paved surface, which influences urban ecosystem, disaster and pollution. In this study, we suggest a method to utilize high resolution satellite image data for efficient survey on the current condition of paved surface. We analysed the paved surface condition of Dae-jeon metropolitan city area using KOMPSAT-2 image and validate its practicalness and limitation of this method.