Project Description
For the design and restoration work, it was required to create orthophotos of the objects for terrestrial photogrammetry. In this case it was the facades of the buildings, views of the historic gazebo and the sculpture. The documentation of the points of interest (well prepared) and the images of the objects taken with a digital camera (ROLLEI d530 Flex) from different angles so that all the areas of interest were photographed (for example, 23 images were taken for the historic pavilion, 19 images for the sculpture, and for the facades the number of images varies according to the area of the facade). Because the camera calibration coefficients were not known, it was not possible to use the computational software for ground-based fogrammetry. The geometric defects of the lens (commissures, perspective) were removed “manually” from the individual images and then transformed into insertion points in the MicroStation environment. The transformed images were then used to create a seamless mosaic in the graphics environment and the necessary retouching was performed. The maximum error on the embedding points for the photoplans created in this way was 3cm.