When downloading the required heightmap and satellite images you may notice multiple GeoTIFFs being downloaded. Mainly you have to obtain two data types: the heightmap and the satellite image covering your area of interest, both in GeoTIFF format. There are many more sources you can find all over the internet handled by the government institutions of each country. These two websites contain rich data of USA territories but not for other regions. For that, it is recommended to use a reliable source to download the data such as USGS-Earth explorer or USGS National map viewer. If you are planning to create a replica from the real world the first step is to find a quality set of GIS data of the area you are planning on creating.
That method is not very flexible though, and not really recommended if you are going for a professional-level terrain generation, but I will mention it for the sake of completion. But at the end of the article, I will mention a way that you can also add building structures to the terrain after following this approach. This workflow concentrates on creating realistic replicas of natural surroundings (areas that mostly consist of mountains, water bodies, vegetation, and so on).
Additionally, I have to mention that this workflow is not optimal for creating urban cities with buildings. The workaround of this approach will include the use of QGIS, a bit of Photoshop, or any other photo editing software, and mainly the Unreal Engine (4.24 or higher is preferred). But with the rapidly developing community base of popular game engines, this task has become simply achievable with loads of new plugins and asset packages that arrive at the market regularly. Creating real-life replicas of your favorite terrain, made simpleĬ reating an open-world for a game or any other reason should be sounding extremely exhausting or more or less impossible for most of you.
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