CupixVista builds its 3D Map and virtual tour using photogrammetry and other sensors in the system to provide a highly accurate measurement directly from the camera.  But sometimes these out of the box measurements can be made better using known scale factors such as a measurement taken on site, or referencing a known dimension. Although CupixVista users typically see errors of a fraction of a percent (less than 1%), if you need accurate more dimensions, rescaling the model against a known real-world distance — anything from a tape or laser measure to a standard site feature (a football field's 300 ft between goal lines, a parking stall, a door opening, etc.) can improve the overall accuracy of the 3D Map. 

The whole operation takes about 30 seconds:

1. Open the measure tool. In SiteView, click the measurement button to start a new measurement.
2. Measure your known reference. Pick two points that span a distance you already know — here, goal line to goal line on a football field.
3. Open Settings → Rescale. With the measurement still selected, open the settings menu and choose Rescale.
4. Enter the true distance. Type in the actual real-world value (300 ft) to replace the photogrammetry-derived reading (297 ft).
5. Confirm the result. The model is uniformly scaled by that ratio, and the measurement now reads the corrected value. All other measurements in the capture are corrected by the same factor.

Admin Permission is required to Rescale

You should have Project Admin or Team Admin permissions in order to rescale because such a scaling would be editing the model. See User Roles and Permissions for more details on how to gain the required permissions. 

Rescaling Example

Here is an example of rescaling being used on the iconic Smurf Field in Boise.

Take a Measurement

The Goal Line to Goal Line shows 302.24 feet but the actual distance should be different.

Rescale via Settings>Rescale

Find the Settings button and hit Rescale to set the actual distance measurement to 300 feet.

The 3D Map is Rescaled

The 3D Map is rescaled and all additional measurements will reflect the rescale operation. 

This worked example shows how to rescale the 3D Map to a known measurement.  Reminder: you must have Project Admin or Higher permissions in order to apply this scaling. 

Rescaling using multiple Measurements

Rescaling can be done either with a single measurement or multiple measurements. If using multiple measurements then average rescale factor will be applied to the model. Below you can see that multiple measurements across from goal line to goal line can be used to rescale the mode.

Rescaling effects the entire Capture 

One rescale applies to the entire capture, so you only need to do it once per model.