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영상 프레임 분석을 통한 대용량 캡슐내시경 영상의 지능형 판독보조 시스템
이현규(H. G. Lee),최민국(M. K. Choi),이돈행(D. H. Lee),이상철(S. C. Lee) 한국지능정보시스템학회 2009 지능정보연구 Vol.15 No.2
Capsule endoscopy is one of the most remarkable inventions in last ten years. Causing less pain for patients, diagnosis for entire digestive system has been considered as a most convenience method over a normal endoscope. However, it is known that the diagnosis process typically requires very long inspection time for clinical experts because of considerably many duplicate images of same areas in human digestive system due to uncontrollable movement of a capsule endoscope. In this paper, we propose a method for clinical diagnosticians to get highly valuable information from capsule-endoscopy video. Our software system consists of three global maps, such as movement map, characteristic map, and brightness map, in temporal domain for entire sequence of the input video. The movement map can be used for effectively removing duplicated adjacent images. The characteristic and brightness maps provide frame content analyses that can be quickly used for segmenting regions or locating some features(such as blood) in the stream. Our experiments show the results of four patients having different health conditions. The result maps clearly capture the movements and characteristics from the image frames. Our method may help the diagnosticians quickly search the locations of lesion, bleeding, or some other interesting areas.
장명근(M. G. Jang),이현규(H. K. Lee),신양재(Y. J. Shin),김종봉(J. B. Kim) 한국소성가공학회 2015 금형가공 심포지엄 Vol.2015 No.8
More than 90% of the transportation between countries is carried out by marine transportation. A large quantity of products can be transported by marine transportation. In most of the transportation between countries, containers are used. However, too many empty containers must be transported between countries due to the transportation imbalance. For transportation efficiency, therefore, foldable containers are being developed. Hinge brackets are important parts of foldable containers because great force is applied on the hinges during loading onto and unloading from ships. Therefore, the hinge bracket for a foldable container is designed to be made using thick plate or bulk materials. The forming process for the hinge bracket using thick plate is designed via numerical analysis. For the forming of the hinge bracket, the shape of bracket is redesigned without reducing the load carrying capacity.