> For the complete documentation index, see [llms.txt](https://dronenaksha-docs.aeromegh.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dronenaksha-docs.aeromegh.com/5.-visualization/5.3-dsm-and-dtm.md).

# 5.3 DSM and DTM

### 5.3.1 **DSM Image (Digital Surface Models)**

A digital surface model (DSM) is an elevation model that contains the elevation of the terrain as well as above-ground features such as buildings, vegetation, towers, and other infrastructure.

\-          By clicking on the DSM tab at the bottom of the screen, a small pop-up will be displayed which will show DSM & DTM tabs (as shown in the image below).

\-          You can see the DSM image by clicking on the DSM option.

<figure><img src="/files/Dtrjn3MgtFQbCozYiNcs" alt=""><figcaption><p>DSM Image</p></figcaption></figure>

### **5.3.2 DTM (Digital Terrain Model)**

In some countries, a DTM is actually synonymous with a DEM. This means that a DTM is simply an elevation surface representing the bare earth referenced to a common vertical datum. In the United States and other countries, a DTM has a slightly different meaning. A DTM is a vector data set composed of regularly spaced points and natural features such as ridges and break lines. A DTM augments a DEM by including linear features of the bare-earth terrain.

By clicking on DTM tab, you can open DTM image.

![DTM Image](/files/KGbEgOFsHyPYk2EQ8di8)