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Orthorectification is main and specific photogrammetric task. Digital technologies allow generation of precise orthoimages, whic h are obtaining the pixel accuracy. The realization of this process requires usage of precise and adequate object model that is generated by usage of different data sources. They include irregular set of points created by survey measurements, digitized cartographic data, raster DEM obtained from stereo pairs, or from points’ cloud gathered by laser scanning. The main steps of orthorect...

It is introduced a complex approach for texture and multispectral segmentation, based on texture analyses. The data fusion method is used for combining the multispectral and texture features of classes in the area s which is investigated. The texture features are estimated by the calculation of variance and skewness statistics over the windows with different sizes. The results ar e integrated with spectral chan nels of satellite images. The images from KOMPSAT-2 satellite are used for testing purposes. The spectra...

The objectives of this study were to present and compare methods for change detection of forest areas in low-resolution satellite imagery, using object based image analysis and standard image analysis techniques (pixel ba sed). Considering that huge area in Serbia is covered with forest, this study is of great importance for detecting and tracking changes over time. The data used in this st udy were optical remote sensing satellite images Landsat TM (22-08-1986) and Landsat ETM+ (23-06-2002). These images were pro...

The present study has been carried out with the use of Remote Sensing techniques in combination with Geographical Information Systems/GIS for monitoring and protection of the environment, in the surroundings of mining areas, as well as for developing new techniques for searching for new Mn-ore deposits, in Drama area, Northern Greece. Various digital processing techniques were applied on LANDSAT-TM imagery. These techniques included differe nt methodologies, such as the “Principal Component Analysis” (PCA), вЂ...

A various range of remote sensors are currently available to help to explore a landscape and other natural components. The mainly part of this field is based on a small format aerial photographs (SFAP) taken from a small aircraft. The scienti fic benefit arises from the combination of knowledge achieved by conventional field work and the visual information gleaned from SFAP. In monitoring studies, temporal changes of forms and patterns give additional clues. The coupling of field data and interpretation of SFAP...