Profile: RS Geoinformatics Solutions Pvt. Ltd. specializes in providing geospatial, photogrammetric, engineering, and surveying services. Our digital aerial triangulation service is a digital process using scanned images of film negatives or scans. Image correlation technology is used to perform point measurements, and generate numerous passpoints for each stereo model. The operator can then interactively measure additional points to obtain an appropriate density. Digital elevation model (DEM) is the collection of mass points of elevations, either manually or automatically using image correlation algorithm. Digital terrain model (DTM) contains mass points and break lines as inputs. It depicts an accurate topology of the terrain through triangulated irregular network.