Urban High-Resolution Remote Sensing

15Building Occlusion Detection in an Urban True Orthophotomap

15.1Introduction

In the previous chapter, the basic principles of high-resolution digital orthophotomap (DOM) and true orthophoto map (TOM) generation have been described. Briefly, the basic steps of high-resolution true orthophotomap generation in urban areas include both digital terrain model (DTM)-based orthophotomap generation and digital building model (DBM)-based orthophotomap generation as well as their merging (Zhou et al. 2005).

The traditional orthorectification methods for high-resolution remotely sensed images in urban areas suffer from two major problems.

1. Ghost images. Traditional methods apply a so-called “digital differential rectification model” to rectify the ...