Revizto AR (augmented reality) is a powerful tool that overlays your digital model onto the real-world jobsite through your mobile device camera. AR can be used for a variety of different purposes, like in-wall visibility, foundation and underground visibility, and identifying MEP systems. 

• Operating system and hardware requirements
• Using Revizto AR
• AR best practices

Operating system and hardware requirements

Android and Apple devices that support AR can run Revizto AR through the Revizto Site app. Revizto AR performance depends on the device's processing speed. Enough space also needs to be available to download the model files. We recommend device models with LiDAR (light detection and ranging) sensors for more accurate calibration.

Refer to the sections below for requirements specific to your device’s operating system. 

• Android requirements
• Apple requirements

Android requirements

Android devices require Android OS 7.0 or later, and Google ARCore support. The majority of recent Android devices can run Revizto AR. 

Apple requirements

Apple devices running iOS 11, iPadOS 11, or later, can run Revizto AR. iPad Pro and iPhone Pro versions with LiDAR provide better calibration and are recommended. 

Using Revizto AR

AR is a feature of the Revizto Site mobile app, and allows you to physically move through your model after calibrating it to your real-world location. 

• Opening AR
• Calibrating AR
• Adjusting model position
• Using AR tools

Opening AR

Before opening AR, you must be signed in to Revizto Site and have the relevant project open. AR can be used offline in areas without internet connection when the project is opened or cached on the device. While AR can be used in any location, the best results are when the model matches the real-world location. 

To open AR: 

1. In Revizto Site, tap the 3D icon and open your model.

2. Navigate within the model to match your physical location on-site.

   Using a QR code, issue, or viewpoint you can quickly orient your physical location with the model.

3. Tap the AR button.
4. Tap one of the calibration options and follow the on-screen instructions to calibrate the AR model with your real-world position. 
   

Calibrating AR

If you are changing rooms or notice the model has drifted from your real-world position, you can recalibrate the AR model for better accuracy. While in AR mode, tap Calibrate to open the calibration screen, then select a calibration type. 

• Calibrate by corner
• Calibrate by floor
• Open without calibration

Best practices for AR calibration: 

• Ensure you have decent lighting and calibrate inside the room where you want to use AR. Recalibrate AR when changing rooms to maintain accuracy.
• 3 ft x 3 ft (1 m x 1 m) surfaces provide the most calibration accuracy when using Calibrate by corner. Surfaces can include walls, ceilings, floors, or framing if they create a corner for calibration.
• In unfinished rooms you can set up a couple pieces of drywall or ceiling tiles to create a temporary corner surface for calibration. 

Calibrate by corner

Requires either an inside or outside corner where three surfaces meet, floor or ceilings are typically used, but any three surfaces work. After scanning the three surfaces, select three corresponding surfaces in the model to complete calibration. This is the most accurate calibration method.

Calibrate by floor

Aligns the floor of the model with the selected real-world floor, and automatically opens the Adjust tool for more accurate model alignment.

Open without calibration

Does not automatically align the model with your real-world view, and instead opens the Adjust tool for you to manually align the model with your view. This calibration mode is useful for quickly viewing the model or navigating the model with AR when off-site. 

Adjusting model position

The Adjust tool allows you to move the model horizontally, adjust the model elevation, and rotate the model around your position. This tool is useful if you’re experiencing some model drift and need to make minor adjustments to the model position. 

Using AR tools

Revizto AR has a variety of options and capabilities that can be used in conjunction with standard Revizto Site workflows. 

Home viewpoint	Applies the home appearance profile set up for the project’s home viewpoint. The home viewpoint is not applicable in AR, as your position in the model is aligned with the AR calibration.
Enable/disable section	Shows or hides a section. A section is required for this tool to show, and can be set by selecting an object and tapping .
Adjust	Allows you to fine-tune the model position to match your real-world view, including adjusting the rotation, elevation, and horizontal coordinates.
Calibrate	Recalibrates the model. Recalibration is suggested when moving between rooms, or when you notice model drift (when the model does not match the xyz coordinates or rotation of the real-world space).
Show all	Resets your view to show all objects. This tool is only available if any objects are hidden.
Ruler	Opens the ruler tools, and provides the same functionality as Revizto on desktop. Measurements with the ruler tool are from modeled elements in the Revizto project and do not measure real-world geometry.
New issue	Allows you to add an issue to the issue tracker while navigating the model. This feature uses the same workflow as Revizto on desktop, and allows you to overlay the model with the real-world location through the model transparency setting.
Stamp	Adds a stamp to the model and the issue tracker. This feature uses the same workflow as Revizto on desktop, and requires stamp templates to be configured.
Show/hide issue pins	Shows or hides all issue pins within the model. Issues can be filtered in the issue tracker, with the same workflow as Revizto on desktop.
Grids	Allows you to show or hide grids. This tool is only available if grids are configured in a loaded model.
Flashlight	Available only on iOS, this turns your device flashlight on and off.
Model transparency	The slider at the bottom of the screen sets the model transparency from transparent on the left to opaque on the right. Issues reported in AR will use the current model transparency setting for the issue markup image.

AR best practices

Set up an AR preset to only load models you need. Fewer models improves the performance and reduces the required download size. AR does not require an internet connection, so preloading and caching a project allows use of AR while offline. 

Set up AR appearance templates:

• Create appearance templates that match the project conditions. This can help identify where models originated, indicate phases of work, or visually represent model attributes for quick identification.
• Create specific trade appearances that highlight only the systems or infrastructure related to a trade.
• Hide ceilings/equipment clearances to improve visibility of MEP systems and reduce visual clutter.
• Minimize transparent objects to improve performance. Solid textures require less processing power to render and can be used with appearance templates intended for AR.

Set up views for the areas you know you want to use in AR:

• Make section boxes, available with Revizto desktop, for rooms or areas. This improves performance by reducing the number of objects being displayed and processed in AR.
• Make viewpoints of the rooms you want to look at to quickly navigate to the room in Revizto Site and begin calibrating AR.

You can load/unload models, and apply appearance templates by opening the Actions menu and tapping Load/Unload models, or Appearance Templates. The Help page is also available and gives a brief description of AR tools and features.