Topic: Return of OLD features?

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swami_worldtraveler (Over 1 year ago)
Researching for a presentation I will be giving on Photosynth I discovered deprecated features from Photo Tourism, and previous incarnations of Photosynth. Namely:

- Automatic orbits and pans finder (accessible thru thumbnail hyperlinks).
- Appearance-based selection (to deal w/ panning/orbit fotos under widely different lighting – e.g. day/night).
- Adaptive color compensation (to deal w/ minor lighting differences in orbits and pans).
- Day and night browsing (filter images for day or night only).
- Frustra viewing.
- Object browsing: thumbnail hyperlinks to objects of interest (as identified by algorithm during feature extraction).
- Photo annotating, and automatic transfer of annotation to other photos w/ common object.
- Georeferencing: register photos  to DEM or other 3D terrain model (or even 2D overhead image).
Nathanael (Over 1 year ago)
The frusta viewing has made somewhat of a comeback in overhead view and is also present in Greg Pascale's iSynth app for iPhone.

What more are you wanting from the georeferencing feature request that is not covered currently in the synth editor's Geo-Alignment? I have to assume that lining our point clouds up with satellite imagery is just paving the way to take advantage of the work covered in the 'Skeletal Sets for Efficient Structure From Motion' and 'Building Rome In a Day' work that the University of Washington and Microsoft Research have been collaborating on. Presumably whatever larger scale bundle adjustment would be performed on all the little synths that are in close proximity to each other on the map could also use whatever satellite and aerial imagery was in the vicinity into consideration and use existing DEM as a strong prior to gain accuracy.

You might also be interested in warping the photos to fit the pointcloud when moving from one to the next.
Nathanael (Over 1 year ago)
(as seen in Photo Tourism and early Photosynth prototypes)
djurock (Over 1 year ago)
Look- this is all quite simple.

Give us back the overhead view.
Give us back the pointcloud view in general.
and give back the camera location keys.

It helps us create better synths.. end of story.

This is what made photosynth photosynth.


NateLawrence (Over 1 year ago)
Hi, djurok,

You can still use the original Photosynth desktop application to create and upload original photosynths.

In new photosynths, you can access the point cloud by opening the debug panel by typing the number 42 into the new synth viewer, checking the point cloud check box, refreshing the page, and entering the global camera view with the [C] key. Zoom out and you'll see the camera positions and point cloud on any Walk, Spin, or Wall synth.

I'm not too sure what you mean by 'camera location keys'.
Could you explain what you want?

If you haven't done so already, check out version 2.0 of Christoph Hausner's SynthExport, which can download the point cloud and camera positions from v.2 photosynths to view in programs like Meshlab.

If you have any other feedback regarding the Technical Preview of Photosynth 2, please share it in the Tech Preview forum here:

Your fellow synther,