CONTENT• INTRODUCTION• AIM & OBJECTIVES• RESEARCH METHODOLOGY• RESULTS• CONCLUDING REMARKS• ACKNOWLEDGEMENT

INTRODUCTION The photographic image captured using the sensor from the air or ground earth is an important source of geographical information related to the area or object of interest. This information can be used for various applications such as topographic mapping, archeology, architecture, planning, industrial, medical and land use

The diversity of the present photogrammetry technology, especially platform to place sensor such as unmanned aerial vehicle (UAV) has boosted its application in mapping, planning, land use, mining, scientific research, monitoring application such as slope monitoring and accident scene and others Geoinformation technology mentioned above is recognized as photogrammetry. Photogrammetry is the technique that can be used for 3D object measurement and modeling using photographs/imageries

INTRODUCTION… In photogrammetry, the basic concept involves the acquisition of two successive photographs which overlapped to one another that are necessary to allow the object image projection applies for the purpose of 3D 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 range photogrammetry data to construct 3D heritage building model. In another word the data will cover from bottom to the top of heritage building.

METHODOLOGY

METHODOLOGY…

In this study, high resolution Sony Alpha NEX-5N digital camera has been used in acquiring simulation heritage building model. This type of camera has 16.1MP CMOS sensor and 1080p 60p HD movies in AVCHD format.

METHODOLOGY…

METHODOLOGY… B. Data Acquisition

In 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…Aerial Close Range Photogrammetry Data Acquisition flows as follow;

METHODOLOGY…Aerial / Ground Close Range Photogrammetry Data Acquisition images as follow;

RESULTSA. Orthophoto (Topographic Map)

Figure below shows the Orthophoto of the study area generated by combination of images captured by UAV (using Erdas Imagine Software)

RESULTSB. Building Modeling using Photogrammetry Method

Figures show the modeling flow using photogrammetry method.

RESULTSC. Data Quality Control

RESULTSC. Data Quality Control (Cont..)

CONCLUDING REMARKS The main advantage of photogrammetric modeling is the economy of

procedure.

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 to drawing in 2D. When 3D model is completed, it is possible to generate any orthogonal or central object projection.

Model can be exported in other modeling or animation software which allows further treatment (element editing, adding lighting, creating dynamic view, etc.).

CONCLUDING REMARKS The 3D building structure of this simulation building had successfully been

produced using digital close range photogrammetry (DCRP) approach integrated with images captured using rotary wing UAV which is based on aerial photogrammetric technique

FURTHER RESEARCHOur 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

ACKNOWLEDGEMENTThe authors also wished to thank

Institute 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