VISUALIZATION & ASSESSMENT OF COORDINATES AND ELEVATIONS - PowerPoint PPT Presentation

GS350 Project in geospatial Science G S 3 5 0 TWO AND THREE – DIMENSIONAL VISUALIZATION & ASSESSMENT OF COORDINATES AND ELEVATIONS PRECISION DERIVED FROM UAV‘s IMAGES By: Tevita M Fifita S11008722

Objectives & Aims GS350 Project in geospatial Science G S 3 5 0  This project will determine whether GIS applications & high precision survey graded RTK GPS, Total station combine with UAV’s techniques of field data collection will yield a high quality data for spatial analysis and mapping purposes.  It can also project the capabilities and potential uses of each equipment, techniques and method of GIS data collection.  2D and 3D Map production  Low & Medium Terrain – Vaturara Playing field  High Terrain – 12 Hall New construction S11008722

Data Acquisition GS350 Project in geospatial Science G S 3 Study Area 5 0 12 Hall New Construction High Terrain • Vaturara Playing Field Low & Medium Terrain • S11008722

Equipments & Tools GS350 Project in geospatial Science G S 3 5 0 R2 Rover (Antenna) R8 Base station (GPS) M3 Total Station GPS Controller Drone DJI Phantom 4 Tripod (2 X) S11008722

Methodology GS350 Project in geospatial Science G S 3 5 0 To From Images Data Processing Assessment Bare Points 2D & 3D Landscapes Visualization Pix4D RTK GPS Drone Trimble Business centre Total Station Site inspection ArcMap (Reconnaissance) ArcScene Statistical analysis (X, Y, Z) 12 Hall New construction Vaturara Playing field (High terrain) (Low & Medium terrain) S11008722

Software GS350 Project in geospatial Science G S 3 5 0 Mapping GIS data management Drone Image GPS & Total Station processing Download S11008722

Data Processing GS350 Project in geospatial Science G S 3 5 0 Orthomosaic Initial Processing DEM/DTM DSM Geo- referencing to GCP’s S11008722

GS350 Project in geospatial Science G S 3 5 0 Results & Discussions Accuracy and Precision S11008722

Statistical analysis GS350 Project in geospatial Science G S 3 Coordinates assessment Drone vs. RTK vs. Total station 5 0 Original Temporary bench marks – RTK vs Total Station Comparing X, Y, Z S11008722

GS350 Project in geospatial Science G S 3 5 12Hall - TS vs DTM Elevation (Z) 12Hall - RTK vs DTM Elevation (Z) 0 40 40 35 35 DTM Elevation DTM Elevation 30 30 25 25 20 20 15 15 10 10 10 20 30 40 10 20 30 40 TS Elevation RTK Elevation Vaturara TS vs DTM Elevation Vaturara RTK vs DTM Elevation 29 28.5 28.5 28 DTM Elevation 28 DTM Elevation 27.5 27.5 27 27 26.5 26.5 26 26 25.5 25.5 25 25 25 26 27 28 29 25 26 27 28 29 RTK Elevation TS Elevation S11008722

GS350 Project in geospatial Science G S 3 5 0 Map Production 2 Dimensional Visualization of Different type of Landscape S11008722

GS350 Project in geospatial Science 2 Dimensional Visualization – 12 Hall new construction G S 3 5 0 Note: Putting together Physical points and Images surveyed(RTK GPS, Total Station and Drone) into a Map production S11008722

GS350 2 Dimensional Visualization – Vaturara Playing Field Project in geospatial Science G S 3 5 0 Note: Putting together Physical points and Images surveyed(RTK GPS, Total Station and Drone) into a Map production S11008722

GS350 Project in geospatial Science G S 3 5 0 Map Production 3 Dimensional Visualization of Difference type of Landscape S11008722

GS350 Project in geospatial Science G S 3 Photo-mosaic 5 0 3 Dimensional Visualization 12Hall New Construction DTM DSM S11008722

GS350 Project in geospatial Science G S 3 Photo-mosaic 5 0 3 Dimensional Visualization Vaturara Playing field DTM DSM S11008722

Conclusion GS350 Project in geospatial Science G S 3 5 0  Technical difficulties faced  Coordinate system  Drone Image processing Yet Objectives and Aims were met  High precision equipments (GPS RTK, Total station and Drone), techniques and method of GIS data  collection yield high quality data for spatial analysis and mapping Learning a good technical skills  S11008722

GS350 Project in geospatial Science G S 3 5 0 Study of Development At Denarau Island in Fiji Using Satellite Imagery Siteri Vunisa and Moria Gaunavo

GS350 Project in geospatial Science G S 3 5 0 Objectives To identify the development range that have occurred from the year 1978(aerial imagery ) • To achieve trend changes that have occurred within the last 37 years; (visual interpretation , ArcGIS • online map , story map from ArcGIS online as well) ( Using visual Interpretation) State the impacts (negative) and benefits (positive) using research methods as well within Denarau • that has affected the development range or the lifestyles of people . Possible recommendations that are suitable for the area of Nadi Town •

GS350 Project in geospatial Science G S 3 5 0 Methodology Collection of data - aerial imagery from ministry of Lands ( aerial imagery of Denarau from 1978 , • 1994 , 1984 and 2009) Visual Interpretation of developed areas ( buildings and boundaries within Denarau ) , reclaimed or • developed areas that have affected Nadi Town ( shape files) Classification of digital Images to determine the change in Land features or characteristics. • Usage of ArcGIS online to display data more informatively where we added layers from file and • imported the data or the layers to the map on ArcGIS online

GS350 Project in geospatial Science G S 3 5 0 Conclusion Some positive benefits includes; employment opportunities, tourism boost in Fiji and potential • overseas investments. Some negative outcomes of development in Denarau Island includes; increase in flooding in • cyclone and rainy seasons, loss of habitats and extinction of marine organisms (biodiversity). Because of its location on the delta, Nadi Town needs to be relocated. Also, improvement of • drainage and emergency methods for market vendors, shop keepers and other businesses.