tailieunhanh - Báo cáo lâm nghiệp: "Utilization of digital photogrammetry in forestry mapping"

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: Utilization of digital photogrammetry in forestry mapping. | JOURNAL OF FOREST SCIENCE 53 2007 5 222-230 Utilization of digital photogrammetry in forestry mapping s. Zihlavnik F. Chudý M. Kardos Faculty of Forestry Technical University in Zvolen Zvolen Slovak Republic ABSTRACT At present photogrammetric interpretation of aerial images is a dominant method of forestry mapping. In the last years transition from analogue to digital photogrammetry has been distinct. Digital photogrammetry enables to achieve workflow effectivity and so to decrease the final product costs. The objective of the submitted paper was to evaluate the availability of digital photogrammetry for the forestry mapping rationalization. Digital aerotriangulation using the ImageStation SSK system brings more accurate results without requirements for the use of a larger amount of control points. The results also demonstrated the use of colour infrared aerial images and also black and white aerial images at the scale 1 15 000 for the orthoimage creation in the forestry mapping department. Compared with the black and white aerial images the colour infrared images have an essentially more interesting content mainly from the qualitative aspect which shifts them to use in many forestry disciplines mostly for determination of the health conditions of forests stands . in combination with the remote sensing of the Earth and GIS Geographic Information Systems . Keywords digital photogrammetry forestry mapping aerotriangulation An important part of forest management is the knowledge of natural and production relationships growth regularities and relations in the development of forest ecosystems. The application of this knowledge obtained from various forestry disciplines is closely connected with spatial localization. Forest management management controlling and forestry evidence almost all their partial tasks are assigned to the forest spatial organization units. Forestry mapping ensures their exact allocation in forest areas. Its objective is to obtain reliable planar