Quad Tree-based Level-of-details Representation of Digital Globe (Short Communication)

Sudhir Porwal

doi:10.14429/dsj.63.3768

Sudhir Porwal Defence Electronics Applications Laboratory, Dehradun

DOI: https://doi.org/10.14429/dsj.63.3768

Keywords: Digital globe, terrain rendering, GIS, quad tree, level-of-details

Abstract

Three-dimensional visualization of the geographic data using a digital globe model has been an integral part of a modern GIS system. The visualization of the digital globe model presents many challenges not found in traditional terrain visualization system. The representation of the digital earth (globe) model is important to efficiently render the geographical data without any distortion either at equator or Polar Regions. This paper presents a uniform scheme for efficient quad tree based level-of-details (LOD) representation of the digital globe to minimize the distortion at Polar Regions and meets the requirement of fast frame rate rendering.

Defence Science Journal, 2013, 63(1), pp.89-92, DOI:http://dx.doi.org/10.14429/dsj.63.3768

Author Biography

Sudhir Porwal, Defence Electronics Applications Laboratory, Dehradun

Mr Sudhir Porwal received MTech (Comp. & Info. Technol.) from Indian Institute of Technology, Kharagpur in 2005. He is currently working as senior scientist in Image Analysis Center, Defence Electronics Applications Laboratory, Dehradun, India. His research interests are in the field of GIS, three-dimensional modeling and visualization, computer vision, video processing, software design & web applications.