摘要：Nowadays, we can say that a considerable amount of photogrammetric mappings carried out in the country are still based on digital images proceeding from analogical aerophotogrammetric cameras and the transformation for the digital form using the photogrammetric scanners. The reasons for this situation are the high costs of a metric digital camera, the impossibility of taking photos in all scales, the existing operational difficulties using non-photogrammetric digital cameras and of course, the advantages of maintaining the existing technologies in the photogrammetric mapping companies. Although important changes have happened added to the analogical-digital productive process, very little has been modified or proposed regarding the geometric resolution of the image versus mapping scale. The same concepts and knowledge acquired during the analogical phase are still being used. Existing variables in the process of generation of digital images from conventional aerophotos can be combined in order to guarantee a better use of them when considering the possibility of increasing the benefit/cost relation. As a result, a new methodology of producing photogrammetric mappings is presented in this article. The new procedure is based on the performance increasing due to the new operational flowchart, the less time in the productive process, the necessary positional accuracy and the less cost in generating urban mapping scale 1:2.000.
其他摘要：Nowadays, we can say that a considerable amount of photogrammetric mappingscarried out in the country are still based on digital images proceeding fromanalogical aerophotogrammetric cameras and the transformation for the digital formusing the photogrammetric scanners. The reasons for this situation are the highcosts of a metric digital camera, the impossibility of taking photos in all scales, theexisting operational difficulties using non-photogrammetric digital cameras and ofcourse, the advantages of maintaining the existing technologies in thephotogrammetric mapping companies. Although important changes have happenedadded to the analogical-digital productive process, very little has been modified orproposed regarding the geometric resolution of the image versus mapping scale.The same concepts and knowledge acquired during the analogical phase are stillbeing used. Existing variables in the process of generation of digital images fromconventional aerophotos can be combined in order to guarantee a better use of themwhen considering the possibility of increasing the benefit/cost relation. As a result,a new methodology of producing photogrammetric mappings is presented in thisarticle. The new procedure is based on the performance increasing due to the newoperational flowchart, the less time in the productive process, the necessary positional accuracy and the less cost in generating urban mapping scale 1:2.000.
关键词：Spatial Resolution;Pixel Size;Digital Photogrammetry;Resolução Espacial;Dimensão do Pixel;Fotogrametria Digital
