5 ms·

Also very impressed here. However, it appears to have a huge limitation over the previous implementation: You can only move in a linear fashion though the scene

by ssewell 13y ago

Also very impressed here. However, it appears to have a huge limitation over the previous implementation: You can only move in a linear fashion though the scene. Gone is the ability to jump around in a 3D environment. At least from the first handful of examples I looked at. Does anyone see an environment in this new version that still allows freedom of movement?

jessaustin 13y ago
They have translation and rotation. What path can you not construct from those?
- ssewell 13y ago
  It's my understanding that you can't use them simultaneously. You have to choose one of the types: spin, panorama, walk, or wall. (http://photosynth.net/preview/about http://photosynth.net/preview/about) In the previous version, random pictures around a scene could be stitched together allowing an experience you could explore. For example, one of the original, popular photosynths allowed you to explore inside an art studio. You could look up at the ceiling, walk on various paths, move close into pictures, etc. In this new version, you're stuck on rails. tl;dr: In this version each node has two exit points: next or previous picture. In the previous version each node had an unlimited number of exit points to other pictures.
  - acgourley 13y ago
    Note you can press "c" to make the camera break free of the rails
    - ssewell 13y ago
      Thanks for the tip! But this allows you to move your perspective outside of the rail system, but doesn't change the fact that you only have images established on the rail system itself.
brandonbloom 13y ago
My guess is that they are optimizing for smartphone use cases: ie record a quick video instead of stitching together photos from lots of different folks. Using linear video as an input means you have knowledge you didn't have before: successive shots must be taken from a relatively close position and direction. The technology is clearly deeply related to the more freeform movement variants of the past. It's likely that even better freeform movement can be stitched together from a collection of linear videos than could be from a collection of stills in the past. I wouldn't be surprised if we see that start to happen soon.
deleted 13y ago
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Geee 13y ago
This isn't really about 3D reconstruction (there exists better solutions for that already, see http://vimeo.com/61625715 http://vimeo.com/61625715) rather it seems that it's more about stitching consecutive photos together. If you press C in the demo you'll see that it appears to create different 3D geometry for every photo. This approach allows movement in the scene.

by ssewell 13y ago

jessaustin 13y ago

They have translation and rotation. What path can you not construct from those?

ssewell 13y ago
It's my understanding that you can't use them simultaneously. You have to choose one of the types: spin, panorama, walk, or wall. (http://photosynth.net/preview/about http://photosynth.net/preview/about) In the previous version, random pictures around a scene could be stitched together allowing an experience you could explore. For example, one of the original, popular photosynths allowed you to explore inside an art studio. You could look up at the ceiling, walk on various paths, move close into pictures, etc. In this new version, you're stuck on rails. tl;dr: In this version each node has two exit points: next or previous picture. In the previous version each node had an unlimited number of exit points to other pictures.
- acgourley 13y ago
  Note you can press "c" to make the camera break free of the rails
  - ssewell 13y ago
    Thanks for the tip! But this allows you to move your perspective outside of the rail system, but doesn't change the fact that you only have images established on the rail system itself.

brandonbloom 13y ago

My guess is that they are optimizing for smartphone use cases: ie record a quick video instead of stitching together photos from lots of different folks. Using linear video as an input means you have knowledge you didn't have before: successive shots must be taken from a relatively close position and direction. The technology is clearly deeply related to the more freeform movement variants of the past. It's likely that even better freeform movement can be stitched together from a collection of linear videos than could be from a collection of stills in the past. I wouldn't be surprised if we see that start to happen soon.

deleted 13y ago

[deleted]

Geee 13y ago

This isn't really about 3D reconstruction (there exists better solutions for that already, see http://vimeo.com/61625715 http://vimeo.com/61625715) rather it seems that it's more about stitching consecutive photos together. If you press C in the demo you'll see that it appears to create different 3D geometry for every photo. This approach allows movement in the scene.