> For the complete documentation index, see [llms.txt](https://docs.imerit.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.imerit.net/3d-multi-sensor-fusion/labeling/3d-multi-sensor-fusion-labeling-editor/key-features/relationship-sensor-independent.md).

# Relationship - Sensor Independent

Relationship Sensor Independent (or Frame-Level Relationship Creation) — now, relationships between objects only need to be defined once per frame, rather than separately for each sensor view. This streamlines multi-sensor annotation, ensuring consistency and saving valuable time.

![](https://content.gitbook.com/content/TcOUG6rfWxqGM0N4db2P/blobs/GoYdLA7m7KqzWa5bOCx2/image)

This feature is especially useful when working with multi-sensor setups like LiDAR + cameras AND all sensors of a frame are **synced.**

![](https://content.gitbook.com/content/TcOUG6rfWxqGM0N4db2P/blobs/Tx8OoNvs1608mXuC0gMq/image)

Benefits

* Simplifies annotation in multi-sensor environments.
* Ensures **consistency**, saving time by **reducing redundant work**.
* Maintains a single source of truth for object interactions across views.

Steps to Use Relationship Sensor Independent

To enable Frame-Level relationship creation, it must be pre-configured in the Recipe (see: <https://docs.imerit-prod.io/project-setup/create-recipe/1.-basic-details#relationship-sensor-dependent>).

{% stepper %}
{% step %}

#### Track objects in the frame

Track both objects within the same frame across all relevant sensor views (for example, `cyclist_3` and `bike_2`).
{% endstep %}

{% step %}

#### Define the relationship

In the Annotation Detail panel, navigate to the Relationships tab and define the relationship between the two objects.

Reference: <https://docs.imerit-prod.io/annotation-tool/steps-to-label#id-6.-annotation-detail-input>
{% endstep %}

{% step %}

#### Save and apply

Save the relationship to apply it across the entire frame.

* You will be prompted with the option to apply this relationship across the sequence as well.

When a relationship is created between two objects (for example, a cyclist and a bike), it is **automatically applied across all synced sensors** of the same frame, and optionally across the sequence.
{% endstep %}
{% endstepper %}

Last updated 7 months ago


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