Accuracy

UTILITY – The stability of BIM Overlay is the result of a well-mapped environment and good app performance. From a user’s perspective, holograms that are meant to be stationary won’t move relative to the environment.

Placement is important

The BIM Helmet is like any other tool that needs maintenance, care, and setup. Spectar runs at 60 frames per second; meaning all you have to do is maintain an environment where the HoloLens can track the surroundings, ensuring the hologram and the matching coordinate system are in sync.

Placement is important

The BIM Helmet is the same as any other measuring or layout tool. With lasers, Trade Professionals go off control lines, with Robotic Total Stations, RTS operators align to known control points.

Same as BIM Overlay, your BIM Helmet needs to know where it is in relation to the actual environment. When a user places the model, they are letting the BIM Helmet know where it is in relation to the control points of the project.

Tracking is important

Once oriented in existing conditions, the BIM Helmet continuously scans the environment with its cameras, scanners, sensors, and software and builds a virtual model of the actual space. The model is then rendered polygon by polygon based on the map the device has created.

Just like with other scanners on the jobsite, the BIM Helmet gets better scans and provides better tracking as it is used more often in different conditions.

It is important to mention that the tracking is dependent on the job site conditions. Good consistent lighting is important to ensure performance of the device.

What you can and can't do

Below is just a sample of what users can do. more use cases will soon be available on our resources page.

Can Do
  • Layout of backing
  • Installation of hangers
  • QA/QC
  • Issue/RFI resolution
Can't Do
  • Layout of hangers on deck
  • Layout of track
  • Any application requiring <1/4″ accuracy

Using Spectar there are three ways to place the model

Placement

Reliability stats

Targets we set for ourselves

Average success rate: < 6 "P80
(Typical 15,000 sq.ft, "seeing the big picture")

Targets we set for ourselves

Line of sight accuracy: <2 "P80
(50'-70' Area accuracy, navigating to work area)

Targets we set for ourselves

Work area accuracy: <1/2 "P80
(50'-70' Area accuracy, navigating to work area)

On-site testing results 2022

Work area accuracy: <1/2 "P80
(P80 = 80th percentile)

On-site testing results 2022

Line of sight accuracy
(TBD)

On-site testing results 2022

Full deck accuracy
(TBD)

The answer is "it depends." what's the question?

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