EXPERIENCE OF MILITARY GEOG RAPHIC INSTITUTE (IGM) IN TECHNOLOGICAL CHANGE FOR SPAT IAL TRIANGULATION PROCESS

摘要

The sample used in this study is constituted by three hundred and sixty nine points with coordinates obtained by analytic spatial triangulation with accuracy of 0.25 m. In this case, the results obtained with the software under study are: (1) 94.6% of criteria satisfaction for planimetry; (2) 93.2% of criteria satisfaction for altimetry;(3) From these results we can conclude the following; (4) The software submitted for evaluation satisfy the criteria for accuracy set by IGM; (5) It reduces the execution times of the process because it eliminates the step of marking the slides for the determination of the spatial triangulated points. The software determines the pixel correlation within the images; (6) Reducing errors associated with the input of mistaken names of the points by the operator of the instrument in the photogrammetric observation phase of the pass and tie points; (7) Given that the results accomplished by a percentage close to 100% quality criteria established in this study, it was suggested the acquisition of the digital system of spatial triangulation, which is materialized in December 2008.