Track: Remote Sensing and Imagery
The Digital Orthophoto Paradigm
David HartKirk Contrucci
Digital orthophotography has become an integral component of land records modernization efforts. This paper addresses several real-world digital orthophoto project models, ranging from multicounty projects to those appropriate for small municipalities. The paper will first describe the basic components of a digital orthophoto project, and then explore several proven project approaches. Factors discussed include aerial photography flying heights, GPS control point densities, scanning resolutions, digital terrain modeling, and final map scales and accuracy. Several project models will be presented including real-world examples of multicounty efforts, single county projects, large municipality projects, and extremely high resolution projects designed for engineering applications. This presentation is designed for those individuals with a basic understanding of digital orthophotography and digital mapping.
David Hart
Ayres Associates
2445 Darwin Road
Madison, WI 53704
USA
Telephone: 608 249-0471
Fax: 608 249 2806
E-mail: hart.d@ayres-msn.com