GENERATING ORTHOIMAGES OF MONUMENTAL OBJECTS BASING ON INTEGRATION OF TLS DATA AND DIGITAL IMAGES -- RELATED ISSUES AND SOURCES OF ERRORS.

The TLS scanning technology is successfully applied in many economic sectors, which have different features and requirements. Dense clouds of points obtained as a result of TLS measurements may be considered as the optimum solution for the needs of correct and complete geometric representation of interesting objects. However, these solutions also have some disadvantages. The objective of the presented paper is to characterize factors, which influence and limit the utilization of TLS and digital images during processing of orthoimages of monumental objects, using the example of facades of the Museum of King Jan III's Palace at Wilanów. All research works were performed using the LupoScanPro software. The issue of the quality and accuracy of 3D projection of measured sites, with consideration of complexity of the object, distances and scanning angles, will be presented and discussed. Advantages and disadvantages of utilization of the DLT transformation for colouring the 3D cloud of points will be also presented. Besides, selected variants of orthoimages generation, with consideration of various density of the clouds of points, specific features of projected monumental surfaces (gilding, wallpapers) and the geometry of digital images will be reviewed. [ABSTRACT FROM AUTHOR]