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Topic: Single Wall shot to a Pano via Semantic Zoom

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mwiththeat (8 months ago)
Hello,

I have a wall synth and I would love to be able to zoom out and see the whole wall.

With Photosynth 1 it was possible to step back and see the whole creation - I feel this feature should also come back to Photosynth 2

Thanks

Matt
NateLawrence (8 months ago)
This is your wall synth you were asking about, Matt? http://photosynth.net/preview/view/6f226d69-b3e9-4f9a-8d67-a5a6530b4cad

Your suggestion actually makes a lot of sense for the Wall synth type - way more than the other new synth types.

It reminds me of an experiment by Josh Harle from years ago.
Here's a blog post he did about it: http://tacticalspace.org/archives/camperdown/ (sadly his interactive demo is missing in action)
The accompanying synth: http://photosynth.net/view.aspx?cid=56f11824-aab7-4984-ab16-e5c7c3e116f5
And a snapshot of part of his reprojection on flickr: http://www.flickr.com/photos/joshharle/5242353417/sizes/l/in/photostream/

Greg Downing also did something similar: http://www.xrez.com/blog/photogrammetric-gigapixel-images/

This also reminds me of a request from user Huck Rorick from years back: 
https://getsatisfaction.com/livelabs/topics/keeping_or_creating_a_context_for_synth_images
NateLawrence (8 months ago)
The bad news is that the Photosynth team seems pretty bent on not making the 'whole creation' part of the new Photosynth.

The new About page http://photosynth.net/preview/about says, "...the technology uses the feature points in each photo to generate 3D shapes. It does so on a per-photo basis rather than trying to generate a global 3D model for the [entire] scene."

It isn't what you're asking for, but have you found the [C] and [M] shortcut keys?

[C] will toggle Camera modes to global + back. (Zoom out to see camera positions)
[M] will toggle an overhead view Map of the camera positions.

If you want to see the point cloud in global view: 
1: pull up the debug panel with 42 
2: check the pointCloud checkbox
3: refresh the page
4: re-enter global camera and zoom out

Thanks to Henri Astre on the Photosynth team for the point cloud instructions: http://photosynth.net/discussion.aspx?cat=00581351-82d8-438d-a37b-7eadb3fb4991&dis=fc1c6324-b8dd-4571-90ea-9761e5de694b
joshharle (7 months ago)
Hi Nate, Matt,

I just miraculously stumbled on this thread out of the blue, and am having a look around for the interactive wall reconstruction files. 

Just a note on the implementation, which was fairly convoluted: I used my camera re-projection tool (http://tacticalspace.org/archives/cameraexport-photosynth-to-camera-projection-in-3ds-max/) to render the wall with images, rendered close-up sections, then used Microsoft Image Composition Editor to create a Silverlight online zoom version.  I'd like to think that if I did it all again today it would be a much more elegant process!
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