DIGITAL IMAGE SIMULATION FOR PHOTOGRAMMETRIC APPLICATIONS

JOHN EDWARD UNRUH, Purdue University

Abstract

Research to determine the feasibility using computer generated image displays which simulate aerial photographs in lieu of actual photography for photogrammetric experimentation is described. Factors affecting photograph simulation, the compilation of ground descriptions for photograph simulation and, a computer program developed for this purpose are discussed. Sample simulated photographs are presented. Monoscopic and stereoscopic pointing experiments using both simulated photographs and digitized photographs are also described. The available data support the conclusion that simulated photography presents a valuable photogrammetric tool. Realistic looking simulated photographs were generated. The capability to program a wide range of image characteristics into the displays was demonstrated. Finally, pointing experiments showed that in terms of measurement accuracy and precision, observers respond similarly to both real and simulated photography. One additional important result is that photograph like displays were demonstrated as a powerful tool for viewing and editing digital cartographic data.

Degree

Ph.D.

Subject Area

Civil engineering|Cartography

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