Forum : Bugs

Did the leaves fall off? Something not working right? Let us know how we can improve the Photosynth experience.


Topic: 100% Synth but Disjointed Chunks

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EdLee (Over 1 year ago)
http://photosynth.net/view.aspx?cid=b2b831fc-4b57-4884-bb2d-719af556e1d9

This is 100% synthy. However, if you use the comma (,) and period (.) to step through all 1,455 photos, you will see certain sections that are disjointed: e.g., front top tunnel arc, front small door, back top tunnel arc, etc. -- these sections are "isolated" -- suddenly the rest of the building disappears and you get only that chunk of the building "floating" in space, against a nothingness background.

I know it's tedious to manually step through 1,455 photos with the (.) key: it would be nice to have a "fast forward" button, or, a way to adjust the speed of the playback, e.g. 10 photos per second, 20 photos per second, etc. then you would be able to spot the disjointed sections more quickly.

Thanks! You guys are still amazing!
EdLee (Over 1 year ago)
http://photosynth.net/view.aspx?cid=67bd5a40-d5de-49fd-a6ab-2a38ba1ef125

Here is another 100% synth and a different disjointed section. This one is easier to reproduce. In the Photo Grid View, go to the bottom of the photos. Just above the last 4 photos (which were not synthed), there is a row of photos of the front door (yellow archway). Click on any of these and you will see the front door is isolated. Also, the front door is missing from the main synth.
Marvin (Over 1 year ago)
Ahh yes...

This happens when Photosynth has enough information to combine two disjoint sets, but there's still not enough information to combine everything into one pointcloud.  In the first example, the following picture:

http://photosynth.net/view.aspx?cid=b2b831fc-4b57-4884-bb2d-719af556e1d9&i=0:1:39

Is in two pointclouds, thus combining them together (if you click on some of the quads, you might see a flash and a pointcloud "jump").  One way fix this is to take a couple more snapshots from this area.
EdLee (Over 1 year ago)
Marvin,Thank you.What is a "quad"? I guess this is the same phenonmemon in the "portal" synths, except in that case it's a nice trick whereas here it's bad.
Marvin (Over 1 year ago)
"quad" is those white squares that show you there are other images to go to.
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