This article describes best practices to effectively capture 360° video with Jaunt ONE camera in conjunction with Jaunt Cloud Services (JCS).
In addition, we have produced a guide - Jaunt VR Field Guide.
Distance from the camera rig
All distances in this section are given in meters from the center of Jaunt ONE. The minimum distance for proper stitching is 1.25m, meaning subjects should not be closer than 1.25m.
In general, stitching quality improves the further the subject is from the camera rig, but compelling stereo tends to be at distances of between 2.5 - 15m. Beyond 25m there is no perceptible parallax.
However, as objects get closer to the camera the following will happen:
- Likelihood of stitching artifacts increases.
- Stitched imagery stretches vertically. This starts to become noticeable for content less than 2m away.
We recommend that objects of interest, such as actors/actresses, stay at least 2m away from the camera. It is best to keep the areas above and below the camera simple (i.e. avoid tree branches above or objects or anything that crosses the 1.25m minimum distance).
Leveling & placing the camera rig
For stereoscopic output, it is highly advised to keep the camera rig as level as possible. It is rather challenging to correct a non-level camera rig in post-production without sacrificing stereo-quality. This, however, can be easily corrected in post for monoscopic deliveries.
Please keep in mind that the camera rig replaces the viewer’s head. If the camera rig is tilted, the viewer will look at tilted content. Also, the camera rig should be positioned on a tripod or other mount at roughly the viewer’s head/shoulder height.
Challenging situations to avoid
Certain kinds of scenes are more likely to cause artifacts in stitched footage. In practice, the stitching algorithm handles most of the following cases correctly, but minimizing these cases lowers the chance of artifacts and potential discomfort for the viewer:
- Camera motion - Any motion other than constant velocity in a straight line can lead to the watcher experiencing motion sickness.
- Lens flares - Lens flares can cause stitching inconsistencies between individual cameras and should be avoided.
- Repeated texture - Repeated similar textures such as a highly repetitive wallpapers or floor tiles can cause temporal inconsistency and localized stitching artifacts.
- Thin structures - Thin structures (e.g. ropes, tree branches, window grids/muntins) are hard to reconstruct without artifacts. Artifacts can be reduced if thin structures are in front of and close to (similar depth) a bigger background object. Results also improve by increasing distance between thin objects and the camera rig. Objects in front or behind thin objects may cause artifacts (e.g. person behind a mesh fence).
- Semi-transparent surfaces - A single depth for each point in the scene is estimated which can lead to issues for semi-transparent surfaces.