http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 신동원 (검색결과 556 건)
- 무료
- 기관 내 무료
- 유료
-
-
파라미터 최적화를 이용한 안개영상의 Dehazing 성능향상
신동원,김상욱 제어·로봇·시스템학회 2018 제어·로봇·시스템학회 논문지 Vol.24 No.1
Dehazed images can be turned into clear images by using haze-removal algorithms for image processing. This paper uses dark channel prior for the dehazing process. The dark channel prior algorithm smoothens the transmission through matting, which is time intensive. This paper adopts the Gaussian filter for smoothing the transmission, resulting in faster calculation time. However, the Gaussian filter causes a halo effect around the boundary of the object. To improve the performance of the dehazing algorithm, the parameters that affect the quality of the dehazed image are selected and optimized within an assigned range. As a performance index for the quality of the dehazed image, a blind contrast enhancement assessment method is applied to measure the edge level, contrast and saturation. Finally, the optimal parameters are selected by comparing several values from the performance index.
-
-
-
-
-
-
분말입도에 따른 Nd-Fe-B 소결자석의 미세조직 변화 및 자기적 특성
신동원,김동환,박영철,김정곤,Shin, Dongwon,Kim, Dong-Hwan,Park, Young-Cheol,Kim, Jeong-Gon 한국분말야금학회 2016 한국분말재료학회지 (KPMI) Vol.23 No.6
Neodymium-iron-boron (Nd-Fe-B) sintered magnets have excellent magnetic properties such as the remanence, coercive force, and the maximum energy product compared to other hard magnetic materials. The coercive force of Nd-Fe-B sintered magnets is improved by the addition of heavy rare earth elements such as dysprosium and terbium instead of neodymium. Then, the magnetocrystalline anisotropy of Nd-Fe-B sintered magnets increases. However, additional elements have increased the production cost of Nd-Fe-B sintered magnets. Hence, a study on the control of the microstructure of Nd-Fe-B magnets is being conducted. As the coercive force of magnets improves, the grain size of the $Nd_2Fe_{14}B$ grain is close to 300 nm because they are nucleation-type magnets. In this study, fine particles of Nd-Fe-B are prepared with various grinding energies in the pulverization process used for preparing sintered magnets, and the microstructure and magnetic properties of the magnets are investigated.
-
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
