> For the complete documentation index, see [llms.txt](https://docs.m-xr.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.m-xr.com/marso-measure/requirements/capture-requirements/coverage.md).

# Coverage

For Marso Measure to work properly, it is important to have good coverage. This means capturing enough perspectives of the object from directly above as well as below.

This may require more photography than previously required for basic photogrammetry.

{% embed url="<https://youtu.be/fgYSNYyvZgw?si=OvBziPjj8P256-ti>" %}

## Camera Position Examples

We have a dedicated [Sketchfab page](https://sketchfab.com/m-xr/collections/camera-coverage-f8798081e24745ba8cbbe485558b016a) to show example camera positions for scans we have completed internally, you can view this page [here](https://sketchfab.com/m-xr/collections/camera-coverage-f8798081e24745ba8cbbe485558b016a).

Following these examples when capturing your datasets will improve results.

## Examples of Camera Coverage

<div align="left"><figure><img src="/files/N5EdBChDkkL1lyaxhZjW" alt="" width="188"><figcaption><p>Perfect Coverage</p></figcaption></figure> <figure><img src="/files/ch7oU099ik5nqKnAtsqc" alt="" width="188"><figcaption><p>Okay Coverage</p></figcaption></figure> <figure><img src="/files/f9sB2wmNPmQ59UQlki41" alt="" width="188"><figcaption><p>Bad Coverage</p></figcaption></figure></div>

{% hint style="danger" %}
Red = Areas the cameras cannot see.&#x20;
{% endhint %}

<div align="left"><figure><img src="/files/Mx2I2mzJ6COdcki6JRYD" alt="" width="188"><figcaption><p>Perfect Coverage Map</p></figcaption></figure> <figure><img src="/files/iCMRP5b2VdHvs6Kb4vOH" alt="" width="188"><figcaption><p>Bad Coverage Map</p></figcaption></figure></div>

{% hint style="info" %}
Overshooting on the rotation will not compensate for missing positions at the top and bottom.
{% endhint %}

It is recommended to have a spacing of at most 12° in each axis *(30 positions to do a full 360° capture)*.

The spacing in each axis does not have to be equal to one another - *e.g.*: a latitude spacing of 10° with a longitude spacing of 5° will work well. However, a latitude spacing of 50° and a longitude of 5° will not - as this is above our maximum recommended spacing.

<figure><img src="/files/YjHk1H6ocQ1FpTrTjVzm" alt=""><figcaption><p>An ideal coverage map</p></figcaption></figure>


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