IVRPA 2013 / Iceland / 360 video with a single camera

Friday, August 16, 2013

As we’ve announced earlier in this blog, the VideoStitch team was present as a sponsor for the IVRPA this year, in Iceland. The event was in the middle of June. It was like all the people interested by the 360 video in the world were together, in the middle of Iceland, at the Selfoss hotel ( not even in Reykjavik ! ).

It was a nice opportunity to meet everyone. And we were so busy with all the feedback we had after this meeting that we haven’t much time to talk about it, until now.

Andrew and the iStar
Andrew Baddeley with the iStar and its recording device

Among many other people, we met Antonio Victor Garcia-Serrano. Antonio did a great talk about making a 360 video with a single lens DSLR, with video capability. Although this is something I’ve already experiment in 2010 with the Renault project, with the same workflow using PTGui, it was a good opportunity to try this technic again with VideoStitch.

So, how is it possible to make a 360 video with a single camera ?

PointGrey Ladybug 3Basically, to make a 360 video, it’s needed to have multi-sensor camera, each camera filming in a direction. And all the sensors are fixed together, so they all move the same way. You can see on the left an example with a Ladybug 3.

But if the 360 camera stays on a tripod, and the tripod doesn’t move, you end up in a similar context than what we are doing with a 360 photos. This is all the trick : do like you were doing a 360 still pictures, but instead, use the video mode of your camera and take 1 minute footage each time. Then you’ll have several videos you’ll stitch together, like if you were doing a 360 photo.

The drawback of this technic : it only works when the camera is not moving, and when people don’t go beyond what can cover a single camera. Otherwise people will disappear when they go in the “overlap zone”. Also, all this works only with very wide angle lens : fisheye. With a not so wide angle lens, it won’t work, because most things that will move will be on the overlap zone. But one of the advantage : you have no stitching errors. Because you have only one camera, you can turn around the center of the optics, whereas it’s impossible with a 360 camera, because the optics are physically different, so their center can’t be equal.

So here is a 360 video we’ve made in front of the Selfoss hotel. You can download the video in the download section if you want to see the result directly on your computer.

The flat view :

The interactive view :

This demo is quite simple. For more advanced example, be sure to visit the website of Antonio Victor Garcia-Serrano : zakato.com !

Enjoy, and more blog post will come soon about the IVRPA !


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