Accession Number : AD0670946

Title :   A FORMULA CALCULABLE ON SMALL COMPUTERS FOR THE DETERMINATION OF RELATIVE ORIENTATION IN PHOTOGRAPHS OF MOUNTAINOUS TERRAIN,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Hu,Ting-hui

Report Date : 30 AUG 1967

Pagination or Media Count : 25

Abstract : In aerial triangulation, the equations used for computing the relative direction generally fall into two categories: (1) the complicated 'mountain' equations with unrestricted point-position distribution; and (2) the 'plain' equations defined by a 6-fixed-point distribution. These 'plain' equations are not suitable for use in mountainous areas, but this difficulty can be overcome by introducing two additional sets of equations to be used in conjunction with the 'plain' equations. The use of this complex of equations saves computational time and computer memory space compared to the mathematical procedures otherwise required. The additional equations will or will not be used in the computation depending on the magnitude of the point-position error at an image pair. (Author)

Descriptors :   (*PHOTOGRAMMETRY, NUMERICAL METHODS AND PROCEDURES), MOUNTAINS, TERRAIN, MATHEMATICAL MODELS, COMPUTERS, ACCURACY, COMPUTER PROGRAMS, AERIAL PHOTOGRAPHY, TRIANGULATION, CHINA

Subject Categories : Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE