Role of Tie Points in Integrated Sensor Orientation for Photogrammetric Map Compilation
Direct measurement of exterior orientation parameters has been a challenge in photogrammetry for many years. Direct sensor orientation using a calibrated GPS/INS system can potentially eliminate the need for ground control points and aerial triangulation, and consequently, result
in a great reduction in the cost and time of aerial photogrammetry. Previous studies have shown that, compared to conventional aerial triangulation, direct sensor orientation yields larger errors in the image and object space. It has also been shown that including a number of tie points within
an integrated orientation approach can result in a reduction of errors in the image space. In this paper, the influence of the number and distribution of tie points on integrated orientation is investigated. Experiments with various numbers of tie points regularly as well as randomly distributed
are presented. Results indicate that an increase in the number of tie points up to one point per model results in a considerable reduction of the errors in the image space.
Document Type: Research Article
Publication date: 01 March 2009
- The official journal of the American Society for Photogrammetry and Remote Sensing - the Imaging and Geospatial Information Society (ASPRS). This highly respected publication covers all facets of photogrammetry and remote sensing methods and technologies.
Founded in 1934, the American Society for Photogrammetry and Remote Sensing (ASPRS) is a scientific association serving over 7,000 professional members around the world. Our mission is to advance knowledge and improve understanding of mapping sciences to promote the responsible applications of photogrammetry, remote sensing, geographic information systems (GIS), and supporting technologies. - Editorial Board
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