Since 1991 GTA Geoinformatik GmbH offers services in photogrammetry, 3D solutions and software. Production of 3D city models, 3D landmarks, digital terrain models, orthophotos and more. Software solutions for automatic 3D modelling from stereo aerial or satellite imagery or LiDAR data. Façade and roof texturing in all levels of detail. Automatic creation of photorealistic textures based on aerial imagery; automatic creation of generic textures based on aerial imagery using regional library elements.