Accession Number : AD0825180

Title :   CALIBRATION OF THE AERIAL PHOTOGRAPHIC SYSTEM.

Descriptive Note : Final technical rept.,

Corporate Author : SYRACUSE UNIV RESEARCH INST NY

Personal Author(s) : Merchant, Dean C.

Report Date : DEC 1967

Pagination or Media Count : 171

Abstract : Emphasis on greater accuracy from photogrammetric methods has stimulated interest in the problem of calibration of the aerial photographic system. To be realistic, the calibration procedures must be accomplished under circumstances of environment and technique which are equivalent to those to be expected operationally. It was the purpose of this study to develop and investigate the feasibility of providing a realistic aerial photographic system calibration. Computational procedures were developed, programmed, and verified with artificial data. These computations included comparator calibration, single photo resection and multiple photo resection. The multiple photo resection employed up to four photographs using a common six parameter model to express interior orientation. All procedures were verified further by use of real photography made at 14,000 feet over the U. S. Coast and Geodetic Survey, McClure, Ohio, camera calibration range. Results of the computations using real data indicated a need for improvement in the reseau techniques employed for compensation of film shrinkage. Recommendations were made for this purpose. Procedures were developed and studied for determination of the camera constant independently from the flying height of the aircraft. This is of particular importance for photographic systems intended for use over mountainous regions. The characteristics of this method of aerial calibration were discussed. (Author)

Descriptors :   *AERIAL PHOTOGRAPHY), (*PHOTOGRAMMETRY, (*STEREOSCOPIC MAP PLOTTERS, CALIBRATION), INSTRUMENTATION, ACCURACY, PERFORMANCE(ENGINEERING), ENVIRONMENTAL TESTS, MEASUREMENT, CORRECTIONS, AERIAL CAMERAS, COMPUTER PROGRAMMING, FEASIBILITY STUDIES, STEREOSCOPES.

Subject Categories : Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE