한국해양대학교

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프랙탈 기법을 이용한 자연지형의 고도 보간

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dc.contributor.author 김현준 -
dc.date.accessioned 2017-02-22T07:13:44Z -
dc.date.available 2017-02-22T07:13:44Z -
dc.date.issued 2012 -
dc.date.submitted 56987-11-06 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002176129 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/10478 -
dc.description.abstract Digital surface representation from a set of 3D samples is one of important issues of computer graphics that has had many applications to the areas of engineering, geology, geography, meteorology, etc. The digital terrain model allows important information to be stored and analyzed without the necessity of working directly with terrain surface. In addition, we can integrate products from digital terrain model(DTM) and other data in a geospatial information system(GIS) environment. One of the most popular stochastic models which represent curves and surfaces is based on fractal concept. A fractal is a geometrical or physical structure having an irregular of fragmented shape at all scales of measurement. In addition, a fractal is based on self-similarity concept indicating that each part of its structure is similar to the whole. The fractional Brownian motion(fBm), derived from Brownian motion, can be used to simulate topographic surfaces. fBm provides a method of generating irregular, self-similar surfaces that resemble topography and that have a known fractional dimension. In this thesis, despite the many applications of fractals in geosciences, the problem of inconsistent results derived from different fractal calculation algorithms remains. It have been found that the triangular prism method is one of accurate algorithms for calculating the fractal dimension of complex surfaces such as remote sensing images. This thesis introduces a method for enhancing the performance of the conventional triangular prism method(TPSM) and interpolating TBD areas using both extracted information and a fractal-based technique. The proposed method is tested using simulated and real DTMs. -
dc.description.tableofcontents 목 차 Abstract ⅲ List of Figures ⅴ List of Tables ⅶ 제 1 장 서론 1 1.1 연구 배경 1 1.2 연구 목적 및 방법 2 1.3 연구 구성 및 내용 2 제 2 장 프랙탈의 기본 개념 4 2.1 프랙탈의 기본 개념 4 2.1.1 결정형 프랙탈 5 2.1.2 비결정형 프랙탈 9 2.2 프랙탈 차원 10 2.3 브라운 운동 13 2.4 프랙셔널 브라운 운동 17 제 3 장 지형정보의 추출 20 3.1 패치의 분할 20 3.2 지형정보의 추출 22 3.2.1 Pentland법 22 3.2.2 Clarke 삼각프리즘 면적법 25 3.2.3 Sun의 삼각프리즘 면적법 29 3.2.4 개선된 삼각프리즘 면적법 30 제 4 장 지형고도의 보간 32 4.1 기존의 보간법 32 4.1.1 Bilinear 32 4.1.2 Bicubic 33 4.2 RMD법 35 4.2.1 1차원 RMD법 35 4.2.2 2차원 RMD법 38 제 5 장 시뮬레이션 및 결과검토 41 5.1 프랙탈 차원 추출법의 검정 41 5.2 모의 DTM을 이용한 보관 43 5.2.1 시뮬레이션 시나리오 43 5.2.2 결과 검토 45 5.3 실제 DTM을 이용한 보간 52 제 6 장 결론 55 참고문헌 56 -
dc.language kor -
dc.publisher 한국해양대학교 대학원 -
dc.title 프랙탈 기법을 이용한 자연지형의 고도 보간 -
dc.title.alternative Elevation Interpolation of Natural Terrains Using the Fractal Technique -
dc.type Thesis -
dc.date.awarded 2012-02 -
dc.contributor.alternativeName Kim Hyun Joon -
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제어계측공학과 > Thesis
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