---
title: WebUI - Camera Bar To Main Relation
slug: ncam-reality/webui-camera-bar-to-main-relation
createdAt: 2021-08-26T07:29:30.000Z
---

This page describes how to access and use the Camera Bar To Main Relation wizard

## Process

Go to the **Actions** tab on the dashboard, navigate through the wizard section and click on **Setup Witness-Main Relation.**

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/shaPiKBZoyejGcDUTbOKl_screenshot-2021-09-01-at-144210.png "Setup Witness-Main Relation")

## The Camera Bar to Main Relation Wizard

The rigid main camera to camera bar relation can be set by different means. 

For now, the only option available is by using **fiducial anchors** to assist with the automatic computation of the relationship. 

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/vYluYh8zmkJHR2zoz6qkm_screenshot-2021-09-01-at-144456.png "Fiducial anchors to compute the rigid relation")

The first screen asks for your confirmation that the camera bar is securely fixed to the main body and that the system will be moved as a whole from now on.

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/VAxqvd7qV2VITs0DEWxDo_screenshot-2021-09-01-at-144603.png "Camera bar and main are secured together")

You are then asked to double check the main body and lens selection before proceeding.  This is because the resulting calibration is stored relative to these choices in the calibration database.  Additionally it is because the lens must be calibrated for this process to work well, therefore it is important we make sure we are using the right calibration before proceeding

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/FkiKNJtwwhOdxeTbvB7-O_screenshot-2021-09-01-at-144626.png "Main body and lens selection")

Now, make sure that the lens is set to the **Golden Point**  (Focus = 0.5 and Zoom = 0.0). This is to ensure that the most accurate part of the lens calibration is used while doing the** Live Update**.

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/995N0HnFUTAi323L5shxO_screenshot-2021-09-01-at-144749.png "Golden point check")

At last, we can proceed with the **Live Update** proper. Point the camera bar view towards a **fiducial anchor** then click ***'Continue'***.

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/g5F5ZbsDwgaJqhcGPi5lt_screenshot-2021-09-01-at-144942.png "Pointing the CB towards a marker")

Now, do the same using the main camera view. Move slowly until the confidence is high enough.

![](https://api.archbee.com/api/optimize/Qn0sdcVrDcDbwMFmH0oYn/6XQrD2CqiI1X0BqENs1Tg_screenshot-2021-09-01-at-145022.png "Live update confidence 'Good'")

If your **Live Update** confidence is at least ***'Medium'***, you can click ***'Finish'*** which brings you back to the **Dashboard**.