| ||Ask HN: How do World Lenses work without depth sensor?|
24 points by hackerews 11 months ago | hide | past | web | favorite | 18 comments |
|Snap just released World Lenses and I'm wondering if CV experts can explain how they work: https://www.youtube.com/watch?v=K6x44v8prFA.|
I was under the impression that phones needed depth and advanced motion tracking (eg see Tango https://developers.google.com/tango/overview/motion-tracking) to enable stuff like placing digital objects down and having them stick without moving around. Surprised Snapchat can now do that without needing additional sensors on the device.
How might that work?
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