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Source AGPGS/IMU and aerotriangulation processes were designed to produce orthophotography with a horizontal accuracy of 4.82feet at 95% confidence. Vertical accuracy of the Digital Terrain Model (DTM) used in the orthorectification process is not part of the source specification. There is no published accuracy specification for this type of dataset. Horizontal accuracy testing appears to meet the orthophotography specification and vertical accuracy testing shows agreement with lidar DSM at +/- 3ft. Additional vertical accuracy testing and results are forthcoming.\nRaw point cloud data was processed to produce a Digital Surface Model (DSM) using ESRI ArcGIS Pro 2.7.1 by the Oregon Parks and Recreation Department.\n", "name": "Elevation/DIM_2018_DIGITAL_SURFACE_MODEL_HS", "description": "Dense Image Matching (DIM) processing attempts to match pixels from stereo image pairs. 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