Experience in software implementation of raster substrate transformation in gis for utility networks

Abstract

This article is part of a broader study devoted to the computer implementation of the “Flexi-ble Bracelet Method” for road alignment design. The paper addresses the problem of raster substrate transformation, which plays a crucial role in the transition from the internal coordinate system of the program to the real-world coordinate framework. Several approaches to coordinate transformation were tested, including affine and projective transformations. After comparative analysis, the similarity transformation was chosen as the most efficient option, since it preserves object geometry while allow-ing scaling, rotation, and translation. The developed algorithm includes reference point input, calibra-tion, scale and angle computation, raster offset determination, forward and inverse transformation, and accuracy verification. The implementation was tested on engineering raster maps in the context of BIM/GIS integration. The results provide a reliable mechanism for georeferencing raster data, extend-ing the functionality of the “Flexible Bracelet” software and supporting further research in automated road alignment optimization.