Layer: Image (ID: 9)

Parent Layer: CMB 2024

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Description: PROJECT + PLATFORM Area of Interest Moreton Bay LGA Abstract / Purpose Aerial imagery over Moreton Bay LGA, captured at 10 cm resolution, as part of the Spatial Imagery Services Plan (SISP). Contact Name State Imagery Team Contact Email imageinfo@resources.qld.gov.au Supplier Photomapping Services Pty Ltd Client Department of Resources Platform Piloted Aircraft GNSS / IMU System NovAtel SPAN OEM7 SPAN CNUS5-H Other Platform Details Piloted aircraft IP Ownership State of Queensland (Resources) Data Use Licence Single Supply Licence, with bespoke licensing by negotiation Use LimitationsThe State of Queensland, as represented by the Department of Resources, gives no warranty in relation to the data (including accuracy, reliability, completeness, or suitability for a particular purpose).IMAGERY CAPTURE Sensor Leica Geosystems MFC150 4 band (Red, Green, Blue & Near Infrared) Focal Length 143 mm Imagery Type RGB Acquisition Date(s) 2024-06-10; 2024-06-12; 2024-06-14; 2024-06-23; 2024-07-21; 2024-09-01 Flying Height (above MSL) 13182 feet Number of Images 4564 Capture Methodology Primary Runs - 41Secondary/Tie Runs - 4 Forward / Side Overlap (%) 80 / 30 Imagery Capture Notes Multiday flight for capture in Clear Sky conditions. Tie / Secondary runs along coast are Tidal and are integrated into final productsCONTROL POINTS Sensor Stonex GNSS Receiver S900A Acquisition Date(s) 2024-05-25; 2024-05-26; 2024-05-27; 2024-05-28; 2024-05-29 Horizontal Datum Geocentric Datum of Australia 2020 Vertical Datum Australian Height Datum 1971 (AHD71) Geoid AusGeoid2020 Map Projection Map Grid of Australia (MGA) zone 56 Number of Control Points 18 Control Point Lineage All PSM checks came in within tolerance.DATA PROCESSING Software (version) Waypoint Inertial Explorer v9.0, Leica Geosystems HxMap v4.6.0, LasTools v240319, GDAL, Global Mapper v25.0 Description of Data ProcessingWaypoint Inertial Explorer is used to determine the precise sensor trajectory. Using the GNSS Base Station Data and antenna height, Raw sensor GNSS & IMU files and Aircraft GNSS Lever Arms, the sensor is then processed using ITRF2014 as the base station and processing datum. Leica’s HxMap suite is then used to apply the georeferencing from the sensor trajectory to the imagery. Additional processing identifies water bodies to be excluded from radiometric corrections. Flight Quality Control is processed via HxMap QC View. The HxMap Triangulation is used to run Automatic Point Matching, perform bundle block adjustment, and analyse the results. The GCPs are imported during this process and the data is aligned to them. During processing in HxMap an SGM point cloud is generated which precisely matches the imagery and this is then used to produce the required elevation surfaces via LasTools. Colour balancing, seamlining and orthorectification workflows are carried out using OrthoVista Description of Post-ProcessingDuring post processing, the DEM surface is corrected for holes/gaps, hydro flattening, and bridge distortions. Rigorous QAQC testing is preformed to ensure any errors are identified early and corrected before moving onto the next stage.ORTHOMOSAIC Spatial Resolution 10 cm Spatial Accuracy 3 pixels @ 68% confidence (Sigma 1) Spatial Accuracy Notes Using HxMap Aero Triangulation, the RMSE in the x axis is +/- 0.079m & y is +/- 0.094m. Horizontal Datum Geocentric Datum of Australia 2020 Vertical Datum Australian Height Datum 1971 (AHD) Geoid AusGeoid2020 Map Projection Map Grid of Australia (MGA) zone 56 Rectification Surface A DEM surface is created using LasTools for rectification purposes. Description of RectificationHxMap is used to process each flight line to reduce orthorectified Level 2 (L2) image strips. The L2 rectified imagery is then reviewed immediately for any smears, streaks, or other issues that would require reprocessing. Cubic convolution algorithms along with Atmospheric, Bidirectional Reflectance Distribution Function radiometric corrections and optimised tonal transfer curve is then utilised for the rectification. A semi-automated approach is used for image mosaicking and tonal balancing using HxMap and OrthoVista software. All the L2 images are merged to help eliminate mismatches in radiometry. Tiles are then exported so that all the tiles will edge match correctly. A virtual QAQC process is then run, then the tiles are mosaiced to produce the final product(s) Tile Size / GridSW_123000_4567000_1kmSW - Refers to the south-west coordinate of the tile (bottom left); 123000 - Coordinate easting of south-west tile corner; 4567000 - Coordinate northing of south-west tile corner Limitations of Data N/A Other Information Data supplied as tiled 3 band ECW in CIR and RGB colour spaces & tiled 4 band Geotiff in RGBI colour spaceDIGITIAL ELEVATION MODEL DEM Type Digital Terrain Model (DTM) Spatial Resolution 1 m Spatial Accuracy Horizontal Same as Orthomosaic accuracy (+/- 3.0 pixels @ 1 sigma Spatial Accuracy Vertical Estimated DSM accuracy (+/- 5.0 pixels @ 1 sigma) in clear flat and open Terrain. Spatial Accuracy Notes DEM produced from point cloud (SGM) generated from aerial triangulated imagery in HxMap so that it matches the imagery. Horizontal Datum Geocentric Datum of Australia 2020 Vertical Datum Australian Height Datum 1971 (AHD71) Geoid AusGeoid2020 Map Projection Map Grid of Australia (MGA) zone 56 Tile Size / Grid N/A Limitations of Data N/A Other Information N/A

Copyright Text: City Of Moreton Bay

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