# Creating Markers

To successfully estimate the camera pose (position and orientation in 3D space), the software requires a set of reference points on the screen surface model. These markers act as the bridge between the digital 3D model and the physical projection environment. 

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***Requirement:*** A minimum of 6 markers is necessary for a successful camera pose estimation. Using more markers generally increases the accuracy and stability of the calculation.

#### Marker Point List and Basic Controls

The **Marker point list** displays all active reference points on the model.

* Marker Entry: Each entry shows the **marker index** (e.g., Point 0), a **Use** checkbox to include/exclude it from the calculation, and a **Name** field for custom labeling.
* **Advanced mode**: Toggling this checkbox expands the list to display the specific 3D coordinates (X, Y, Z) for every marker.
* **Use All / Clear All**: Bulk commands to either enable all markers in the list or disable them simultaneously.
* **Delete Selected:** Removes the currently highlighted marker from the list.
* **Clear list**: Deletes all markers, resetting the list to empty.

**Save list as**: Exports the current marker set to a file for later use or for other projects using the same geometry.

#### Auto Marker Generation

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For simple geometries geometries  markers can be generated automatically using the Auto Marker feature.

* **Auto Marker** Button: Triggers the automatic placement of points based on the mesh geometry.
* **Level Selection**: This dropdown determines the density of the generated points.
  * Level 1: Generates 6 markers (the minimum required).
  * Level 2: Generates 15 markers for higher precision.
  * Higher Levels: Increases the marker count accordingly to ensure dense coverage across the entire surface.