> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognite.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 3D contextualization

> Contextualize CAD models, 360 images, and point clouds in Cognite Data Fusion (CDF).

The 3D contextualization APIs create and remove links between 3D domain objects and `CogniteAsset` instances in data modeling projects. These links are scoped to specific 3D model revisions and let you navigate between 3D content and related assets.

<Info>
  These endpoints are available only in data modeling projects.
</Info>

## What these endpoints do

The group covers three contextualization types:

* **CAD nodes to assets** for a specific CAD model revision
* **360 image annotations to assets** for a specific 360 image revision (one `CogniteAsset` to many `Cognite360ImageAnnotation`)
* **Point cloud volume references to assets** for a specific point cloud revision

Each type has a create endpoint and a delete endpoint for managing those links.

## How this relates to 3D asset mapping

These APIs link 3D objects to `CogniteAsset` instances in data modeling spaces.

[3D asset mapping](/api-reference/concepts/20230101/3d-asset-mapping) maps 3D model nodes to Cognite Data Fusion (CDF) assets for bidirectional navigation between 3D views and asset data.

## APIs in this group

### CAD contextualization

* Create links between CAD nodes and `CogniteAsset` instances
* Delete specified CAD-node contextualizations for the referenced model revision

### 360 image contextualization

* Create links between 360 image annotations and `CogniteAsset` instances
* Delete the `CogniteAsset` and `Cognite360ImageAnnotation` annotation pair links for the referenced revision

### Point cloud contextualization

* Create links between point cloud volume references and `CogniteAsset` instances
* Delete specified `volumeReferences` contextualizations for the referenced point cloud revision