Hongjoo Park

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Recently, Terrestrial Laser Scanners (TLS) have received considerable attention for their potential applications in forest management, archaeology, ecology as well as remote sensing and urban planning applications. The TLS systems differ from Airborne Laser Systems (ALS) in that they do not utilise an integrated Global Positioning System (GPS) and Inertial(More)
Accurate modelling of individual trees is essential for forestry applications e.g. forestry inventory and biomass estimation. This paper aims to utilise Terrestrial Laser Scanners (TLS) in order to derive a three dimensional (3D) tree structure and compute its volume. A new approach is proposed and tested to estimate the tree structure and leaf area using(More)
For the last few decades, analysis of forest area has been conducted using remote sensing techniques such as aerial photogrammetry, satellite imagery, synthetic aperture radar and lidar. Airborne laser scanning in particular offers a cost-effective, versatile, operationally flexible and robust sampling tool for forest management. There is a growing industry(More)
OBJECTIVE To investigate changes in the differential renal function (DRF) before and after pyeloplasty in renal units with unilateral pelvi-ureteric junction obstruction (PUJO) with supranormal function, and to evaluate the clinical significance. PATIENTS AND METHODS We reviewed the medical and radiographic records of 29 children (26 boys and three girls)(More)
Three dimensional (3D) mapping has been used widely in the spatial industry as a powerful technique for rendering artificial objects and their surrounding topography. However, an accurate and effective 3D modelling of complex features e.g. feature rich buildings and trees, is still challenging. The aim of this study is to develop an efficient framework to(More)
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