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EXTRACTION OF BUILDING ROOF EDGES FROM LIDAR DATA TO OPTIMIZE THE DIGITAL SURFACE MODEL FOR TRUE ORTHOPHOTO GENERATION
LiDAR Aerial photos Edge Detection DSM True Orthophoto
2018/6/5
Various kinds of urban applications require true orthophotos. True orthophoto generation requires a DSM (Digital Surface Model) to project the photo orthogonally and minimize geometric distortion due ...
Operational procedure for automatic true orthophoto generation
True Orthophotography Automatic Optimal Seaming Automated Mosaicking
2016/5/23
Orthophoto imagery is a valuable layer in a GIS because it provides a generic, inexpensive, and accurate base map.However, in cities with tall buildings it is difficult to create a seamless database o...
TRUE ORTHOPHOTO PRODUCTION USING LIDAR DATA
LIDAR First and last pulse measurement Orthophoto True Orthophoto DTM DSM
2015/9/28
Light Detection and Ranging (LIDAR) has been used for years with a variety of applications, including the efficient creation of
digital terrain models (DTMs) for large-scale, high-accuracy mapping. L...
Obscured areas are serious defects in large-scale and urban orthophotos. In recent years several rectification schemes minimizing
these defects were proposed. These methods use raster-based algorithm...
True orthophoto generation using multi-view aerial images
True orthophoto digital surface model occlusion detection building detection
2014/9/9
Usually aerial imagery are acquired through perspective projection which results in relief displacement in the map. Therefore, orthophotos from large scale aerial images over urban area often suffer f...
OCCLUSION DETECTION BY HEIGHT GRADIENT FOR TRUE ORTHOPHOTO GENERATION, USING LIDAR DATA
True Orthophoto Occlusion Detection LiDAR Height Gradient Double Mapping DSM
2014/4/24
Nowadays, the use of orthophoto in urban areas has become common. It is known that in most parts of urban areas there are a great number of tall buildings which can cause occlusion regions during imag...