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Data Type used in ComparisonBy Photogrammetry: 40m、5m Interval。By LiDAR 5m,1m Interval DTM。With Bilinear interpolation to gather the anticipated height atthe target region.AuBvPP=(1 −u)(1−v ) A+u(1−v)B+v(1−uC) + uvD0≤u≤10≤v≤1CD
Comparison the Error of HeightUnit:mLiDARRaw Data40mDTMAerail5m DTMLiDAR5m DTMLiDAR1m DTMAverage Dz 0.025 0.990 -0.8350.040 0.105Averagemagnitude 0.154 3.187 1.955 0.233 0.205RMS 0.196 3.812 2.126 0.324 0.271MAX 0.393 7.623 3.212 0.621 0.615MIN -0.382-5.135-4.616-0.921-0.421Median 0.047 0.508 -0.9840.016 0.096
Page 1 and 2: Geohazard Assessment withHigh Resol
Page 3 and 4: Basic Information from DTMAltitude
Page 5: Discrete points Grids
Page 10 and 11: 2574000Photogrammetry VS2572000LiDA
Page 12 and 13: 3D View of Regional Bias
Page 14 and 15: Aerial 5m DTMLiDAR 1m DTMTrenchRoad
Page 16 and 17: Aerial40maerial5mLiDAR5mLiDAR1m
Page 18 and 19: Slope
Page 20 and 21: Summary of published result for Lan
Page 22: Aerial Photos集集 084_921 地
Page 25 and 26: Determine the Weighting forLandslid
Page 27 and 28: Geology-Dist. To Structure與構
Page 29 and 30: Topography-Aspect坡向對山
Page 31 and 32: Environment-PGAPGA 對山崩面
Page 33 and 34: Unstable Index MethodRatio Index=(N
Page 35 and 36: Reclassify Results
Page 37 and 38: Validation Region
Page 39 and 40: Calculated Factors
Page 41 and 42: Discussion1.Dist to gully2.Slope3.r
Page 43 and 44: Slope vs height vs landslideratio w
Page 45 and 46: InterpretationsLidar have better ch
Page 47: Thanks……yutt@mail.ncku.edu.twTE

yutt@mail.ncku.edu.tw

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