The work is focused on automated tree counting in the forests, as one of the important information about forest stands, based on automated measurement and calculation of crown projections from various remote sensing materials. In this work were used two specific methods of measurement and calculation crown projections, used for various types of Remote Sensing materials. In our case multiresolution segmentation for RGB and CIR images and for airborne laser scanning date we use Swammer’s method of measurement and calculation of crown projection based on generate river basin. Outputs of processing from different remote sensing materials were compared with measured reference data (the number and positions of the trees), which were collected on the territory of interest area. Attention was also paid to evaluate the resulting tree counts, which are represented by crown projections according to individual input remote sensing materials. Data sources in the form of aerial photographs and airborne laser scan, with which we worked, were created at the initiative of the National Forestry Centre in 2011, for the entire VŠLP with an area of 250 square kilometres. During one survey flight, panchromatic images in high resolution was taken and later, was created high resolution RGB and CIR synthesis by panchromatic focusing. The work monitors and evaluates how the tree counts are generated, depending on the input material change and the processing process.