INTRODUCTION The photographic image captured using the sensor from the air orground earth is an important source of geographical information related tothe area or object of interest. This information can be used for variousapplications such as topographic mapping, archeology, architecture,planning, industrial, medical and land use The diversity of the present photogrammetry technology, especiallyplatform to place sensor such as unmanned aerial vehicle (UAV) hasboosted its application in mapping, planning, land use, mining, scientificresearch, monitoring application such as slope monitoring and accidentscene and others Geoinformation technology mentioned above is recognized asphotogrammetry. Photogrammetry is the technique that can be used for 3Dobject measurement and modeling using photographs/imageries
INTRODUCTION… INTRODUCTION… In photogrammetry, the basic concept involves the acquisition of twosuccessive photographs which overlapped to one another that arenecessary to allow the object image projection applies for the purpose of3D measurement and modeling as shown in Figure below Two successive photographs (left and right photograph) for 3D measurement and modeling
AIM & OBJECTIVES In this study, aerial photogrammetry data is integrated with close rangephotogrammetry data to construct 3D heritage building model. In anotherword the data will cover from bottom to the top of heritage building.
METHODOLOGY…METHODOLOGY…In this study, high resolution SonyAlpha NEX-5N digital camera hasbeen used in acquiring simulationheritage building model. This type ofcamera has 16.1MP CMOS sensorand 1080p 60p HD movies inAVCHD format.
METHODOLOGY…METHODOLOGY… B. Data AcquisitionIn this study, aerial photogrammetry data is integrated with close range photogrammetry data to construct 3D heritage building model. In another word the data will cover from bottom to the top of heritage building.For the purpose of the study, one of the Universiti Teknologi Malaysia buildings is simulated as a heritage building.Data Acquisition flows as follow;
METHODOLOGY…METHODOLOGY…Aerial Close Range Photogrammetry Data Acquisition flows as follow;
METHODOLOGY… METHODOLOGY…Aerial / Ground Close Range Photogrammetry Data Acquisition images as follow;
RESULTS A. Orthophoto (Topographic Map)Figure below shows the Orthophoto of the study area generated bycombination of images captured by UAV (using Erdas Imagine Software)
RESULTS B. Building Modeling using Photogrammetry MethodFigures show the modeling flow using photogrammetry method.
CONCLUDING REMARKS The main advantage of photogrammetric modeling is the economy ofprocedure.The terrain work is much shorter compared to on site measuring dimensions.Time needed for modeling is about the same as time needed for drawing object. Greater quantity of information is obtained using 3D modeling compared todrawing in 2D. When 3D model is completed, it is possible to generate anyorthogonal or central object projection.Model can be exported in other modeling or animation software which allowsfurther treatment (element editing, adding lighting, creating dynamic view, etc.).
CONCLUDING REMARKS The 3D building structure of this simulation building had successfully beenproduced using digital close range photogrammetry (DCRP) approach integratedwith images captured using rotary wing UAV which is based on aerialphotogrammetric technique FURTHER RESEARCH Our next task is to model the entire new FGRE building based on DCRP and subsequently combine with the footprint of the building on a common reference coordinate system and GIS environment
CURRENT WORK ON UAV Land slide monitoring Soil erosion monitoring Construction site progress monitoring
ACKNOWLEDGEMENT The authors also wished to thankInstitute of Geospatial Science and Technology (INSTEG) Faculty of Geoinformation & Real Estate, Universiti Teknologi Malaysia & Pixelgrammetry & Al-Idrisi Research Group (Pi_ALiRG) Centre of Studies Surveying Science and Geomatics, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA THANK YOU THANK YOU