SPECIFICS OF CALCULATING AREAS OF CITY BLOCKS BY UTILIZING THE PHOTOGRAMMETRIC (PHOTOTHEODOLITE) METHOD

Abstract

The definition of the territory of urban development by various methods, including such as geodetic, photogrammetric and cartographic, is considered. It is found that the use of geodetic methods with direct coordination of contour points of the figure on the ground allows to obtain the most accurate and reliable result. The advantages and disadvantages of using photogrammetric method of research located in a closed area, where you can not always see the entire contour of the area. It is noted that when processing aerial photographs, regardless of what they were obtained, there are questions of correct decoding. In the process of decoding is finding the right area, which is associated with the correct location of the contour surrounding the area. It is proved that photogrammetric methods for determining the area remain priority methods that helps to proper allocation of time and funding through the use of such an approach. Problems of using quasi-aerial photographs taken from a height of about 2 km are described. The main obstacles that arise when processing aerial photographs are analyzed, namely - correct decoding, which depends on the openness of the territory in which the city district is located, that is the presence of dead zones. Recommendations are given to eliminate problems that occur in dead zones where 3D measurements are virtually impossible, for example, in this case, you can use either multiple measurements or a comparative method with other methods of determining areas.