Making Augmented Reality Work Outdoors

www.edxtech.com

@edxtechnologies

Keith Bray

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How to go from this… To this?

Top-Down 2D Map View First Person AR View 2

Or even just as simple as… this.

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Why do we want this?

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Outdoor AR Problems • Anchor point detection • Where in the world am I? • How am I oriented? • GPS accuracy • Compass/orientation accuracy • Camera Field-of-views • Poor depth perception range • AR placement relative to the world • AR object orientation (3D vs 2D) • Obstruction of view

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Outdoor AR Use Case Example 1

Where exactly do I dig to find this 1” x 1” cable or pipe?

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Outdoor AR Use Case Example 2

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Well, we have to fix some problems • GPS is inaccurate to ~3m (10 ft) • Compass can be off 5 degrees or more

Initial Thoughts: • Add external, more accurate GPS/GNSS • Replace GPS w/Computer Vision

(ARCore/ARKit) – see if this helps • AI / ML

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But what about GPS and compass accuracy?

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By default, it’s bad

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Distance Skewing

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Bad data in, bad data out

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(Pa1, Pb1) (Pa2, Pb2) (Pa3, Pb3)

Some eq: 123x + 456y = Lat 789x + 654y = Lng

Multiple Linear Regression

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How do we get good/great?

Combine lots of solutions • Apply Some math to subject’s location

• Use CV to adjust GPS error • Use GPS to adjust CV error

• Use a digital twin for AR projection • Use external GNSS if you can • Manual alignment also valid

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Do things get better with fancy equipment?

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Expensive GPS/Camera equipment

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Where to go from here?

AI | ML |Image recognition

Thanks you!

Keith Bray

@edxtechnologies www.edxtech.com

A geospatial computing company