Assessing the geometric accuracy of small-format aerial photographs based on orthophotos in urban territories

With the changing technologies, information that is easily accessible to everybody by remote methods is increasingly being used. This information is obtained using various UAV or ultra light flyers. As the amount of such information increases, it is necessary to assess the accuracy and appropriateness of this information for solving land-use problems. The main goal of the work is to evaluate the photometric properties of orthophoto made using small-format photographs in urbanized areas. The aim of the work was to raise the following tasks: to analyze and evaluate the process of orthophoto creation; to determine the geometrical accuracy of orthophoto in separate urbanized areas. Study was conducted in about 1200 ha of Kaunas city located in the middle of Lithuania. In this area are different types of urban areas, such as old town, industrial area, living areaVytauto Didžiojo universitetasŽemės ūkio akademij