DSM, DTM & CONTOUR MAPPING
Grey-scale elevation maps & contouring.
Once our software has processed the aerial imagery captured by our pilot, every smallest topographical detail of the land is rendered into a 3D "points cloud". Recording true elevation data while we're on-site means we can then translate this topographical data into a 2D map (or, more accurately, a "2.5D" map, as it displays 3D data), annotated with highly detailed contour data, down to 2m intervals between contours.
With our software, we are furthermore able to categorise and remove certain features from the model. This means we can remove trees, shrubbery or buildings and present a map that shows the 'interpolated' (estimated) topographical features beneath them (this is known as a Digital Terrain Map, DTM), or keep such features in to show the area as it appeared on the day we captured it (known as a Digital Surface Map, DSM).
Finally, our maps can then be presented in one of two ways : firstly as an elevation map, where darker-shaded areas are low elevation and lighter areas are high elevation, or as a "hill-shade" map, to provide at-a-glance topographical clarity.
Maps can then be provided in any file formats compatible with your preferred GIS (Geographic Information System) software.
