This article presents the results of a research project carried out by the Terramap Sp. z o.o. com- pany, which resulted in the development of a measuring device to digitize in 3D, allowing data acquisition and processing. A characteristic feature of the devised system is the automatic acqui- sition of information about both the geometry (spatial digitization) of the object and the colour information on the object within the RGB colour space (high-resolution digital photographs). The dedicated software, designed for the device makes it possible to plan and control the process of data acquisition, followed by data processing, and the development of the material ready for presentation. Implementation of the research results, by constructing the device and its software on the basis thereof, allowed us to significantly accelerate the digitization work, and thus reduce the unit cost of 3D digitalization. In order to properly manage colour in the processing of data obtained using the device, we have applied a procedure to calibrate the colour of the material obtained. Studies and tests that we have conducted have shown the validity of the measures designed to control the colour of the resulting product. This publication presents the procedure used for colour management, applied in the process of creating a photorealistic 3D model, as well as the results of our research into automating the process.