Virtual Reality in 3D

Q&A about the latest versions
Post Reply
Rajah
Posts: 254
Joined: Sun Jul 11, 2010 8:02 pm

Hi,

How Do They Do It? What has to be seen with it, I mean.

http://www.vrmaster.co/

Frans
User avatar
JimWatters
Posts: 329
Joined: Thu Oct 07, 2010 6:16 pm
Location: Saint John, New Brunswick
Contact:

Panorama displayed this way are meant to be viewed with a Head Mounted Display(HMD) like Google Cardboard and a smart phone or Oculus Rift and a PC.
https://www.google.com/get/cardboard/
https://www.oculus.com/dk2/

A similar experience can be made by creating two views using Pano2VR and keeping them in sync.
http://photocreations.ca/Partridge_Island/indexVR.html

Panoramas were made to be viewed in a HMD. The added immersion of seeing exactly where you are looking is amazing.

To actually get stereoscopic 3D, stereo panoramas need to captured. These examples are in mono showing the same view to each eye.

We are working on the tools needed to make creating output for HMD easier.
Rajah
Posts: 254
Joined: Sun Jul 11, 2010 8:02 pm

Thanks Jim!
Amazing.

To actually get stereoscopic 3D, stereo panoramas need to captured. These examples are in mono showing the same view to each eye.

How can that be done at this moment?

Frans
User avatar
JimWatters
Posts: 329
Joined: Thu Oct 07, 2010 6:16 pm
Location: Saint John, New Brunswick
Contact:

Shooting stereo is a big challenge over shooting mono.

There are basically three ways to shoot stereo panoramas. Paul discusses them here.
http://paulbourke.net/stereographics/stereopanoramic/


1 Use a pair of cameras mounted in portrait with 180° fisheye lens, where you might take 4 images around to capture full sphere you would take about 40, reason being is the camera is no longer on the NPP of the mount and you want to minimize the stitching errors caused by parallax. If there are moving subjects in the pano then using pairs of cameras is important.

2 Use one camera shoot a one pano them move the camera off the NPP and shoot another. The problem with this method is there can be movement between when the first pano was shot and taking the second pano. These discrepancies look really bad when viewed.

3 Use one camera with a 180° fisheye with camera in front of the NPP. Take about 40 around. With masks use a strip of left side of every image to make the right pano, and the right side of every image to make the left pano. This does not solve the problem of capturing moving subjects because the same area captured in L & R will be several shots apart.

Stereo panoramas have the problem that if there is depth data in the zenith or nadir of the image as you look up or down it will look correct until you look past the zenith or nadir then the stereo will be in reverse. To get around this problem avoid capturing in an area will depth above or below the camera. Use the same single image for left and right for both zenith and nadir.

For this example shown in Anaglyph, you need Red/Cyan glasses to view, I shot a my standard pano with 6 around +Z +N, Then I moved the camera off the NPP and took the horizontal row again by at 3X as many at 18 around. I used the same Z & N in both panos. I also had to duplicate the smoke in the distance so they were the same in L & R.
http://photocreations.ca/home2/Spruce_A ... html#node3

Immersion increasing by viewing panos in a HMD. The immersion increases again when viewing stereo panoramas.
Rajah
Posts: 254
Joined: Sun Jul 11, 2010 8:02 pm

Thanks Jim for the extended answer.
Something to study!

Frans
Post Reply