UAV 영상을 활용한 필지별 사면경사 추적기법 개발 = Developing slope angle tracking technique per parcel using UAV imagery

다국어 초록 (Multilingual Abstract)

The published land price is the official land price that is guaranteed by the state and is the basis for taxation and land transactions. Land characteristics survey is the most important factor in evaluating the publicly announced land price, and is pointed out as the main cause of the error in the publicly announced land price. However, for some of the current land characteristics survey items, the difficulty of work and the survey results are different depending on the site conditions (distance or ease of access), and in particular, the slope and elevation that are difficult to clearly distinguish with the naked eye of the investigator. In the case of, the evaluation is conducted based on the investigator's on-site investigation. This not only requires considerable time and cost, but also the need for a consistent and objective evaluation method in the same lot as the investigation results may appear differently depending on the subjective judgment of the investigator. This study developed a tracking technique for slope and altitude by lot through DEM (Digital Elevation Model), which was accurately constructed based on point cloud for residential areas and forest fields using UAV. Land characteristics for slopes and elevations for existing appraisals through comparison of UAV-based publicly announced land prices, current publicly announced land prices, appraisals, and actual transaction prices based on the data for each parcel derived through quantitative analysis based on UAV remote sensing. It provides technical and methodological implications for improvement that can replace the limitations of the research method, and it is believed that it can be used as a persuasive base data as evaluation data and evidence for the publicly announced land price in the future.

목차 (Table of Contents)

• 1. 서 론 1
• 1.1. 연구의 목적 1
• 1.2. 연구의 범위 4
• 1.3. 연구의 방법 6
• 2. 이론적배경 및 선행연구 8
• 2.1. 공시지가 산정관련 8
• 2.1.1. 표준지공시지가 8
• 2.1.2. 표준지공시지가의 조사 및 선정 10
• 2.1.3. 개별지공시지가 11
• 2.1.4. 개별지공시지가의 조사 및 선정 12
• 2.2. 토지특성조사 14
• 2.2.1. 개요 14
• 2.2.2. 방법 15
• 2.2.3. 고저 조사 및 평가방법 21
• 2.3. 연구 동향 23
• 2.3.1. 국내 23
• 2.3.2. 국외 25
• 2.3.3. 본 연구의 차별성 26
• 3. 데이터 취득 및 분석 27
• 3.1. 데이터 취득 27
• 3.2. GPS 제원 및 VRS 측량 30
• 3.3. 데이터 처리 36
• 3.3.1. Align photo 36
• 3.3.2. Build dense cloud 39
• 3.3.3. Build mesh 42
• 3.3.4. Build texture 43
• 3.3.5. Build tiled model 44
• 3.4. 수치표고모델 및 수치표면모델 구축 45
• 3.4.1. UAV기반의 DSM 구축 47
• 3.4.2. UAV기반의 DEM 구축 48
• 3.5. 연구지역 좌표 세부보정 49
• 3.5.1. 수치지형도와 연속지적도 이격거리 산출 기준점 설정 49
• 3.5.2. 수치지형도와 연속지적도 이격거리 좌표보정 53
• 4. 필지별 공시지가와 UAV 사면경사 기반 공시지가 비교평가 56
• 4.1. 사면경사 추출 데이터 처리 56
• 4.1.1. 필지별 사면공사 데이터 추출 60
• 4.1.2. 필지별 사면경사 데이터 재분류 61
• 4.1.3. 용도구역별 공시지가 산출 62
• 4.2. 용도구역별 공시지가와 UAV 사면경사 기반 공시지가 비교 평가 65
• 4.2.1. 자연보존지역 68
• 4.2.2. 녹지지역 71
• 4.2.3. 주거지역 74
• 5. 데이터 검증 77
• 5.1. UAV 수치표고모델 검증 77
• 5.2. UAV 수치표고모델 기반 경사각 검증 79
• 6. 토론 및 고찰 85
• 7. 결론 94
• 참 고 문 헌 96
• Abstract 104
• 부록 106