# Ground and Ceiling Mover

The Ground and Ceiling Mover is a two-way slider on the bottom right of the point cloud that allows users to hide points from ceiling to ground and vice-versa while labeling an object.

{% hint style="success" %} <img src="/files/mXHEiGg35kYjwl0I4r5p" alt="" data-size="line"> Ground and Ceiling sliders help filter out points which the user does not need to view.
{% endhint %}

<figure><img src="/files/4dLR26GB4L3p6PbkAG6p" alt=""><figcaption></figcaption></figure>

## Benefits

* **Enhanced Focus:** Allows annotators to concentrate on a specific area of interest, eliminating distractions from irrelevant regions.
* **Increased Annotation Accuracy:** Provides a clearer view of smaller, detailed areas, aiding precise annotation.

***

## Steps to use Ground and Ceiling Slider

{% stepper %}
{% step %}

#### Use case: hide unnecessary points

On hiding unnecessary points, users can more accurately mark the points belonging to the object. For example, a car parked under a tree can be marked easily from the top view by sliding the marker from the ceiling lower to hide points belonging to the tree top.
{% endstep %}

{% step %}

#### Shortcuts to change levels

* Ground Level (increase/decrease): `G + Up/Down Arrow`
* Ceiling Level (increase/decrease): `C + Up/Down Arrow`
  {% endstep %}
  {% endstepper %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.imerit.net/3d-multi-sensor-fusion/labeling/3d-multi-sensor-fusion-labeling-editor/key-features/ground-and-ceiling-mover.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.