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Topic: Optimal resolution for Images?

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sastay1 (Over 1 year ago)
Hi all

this might be a common question, however, I couldn't find the answer anywhere, hence:

Which is the recommended resolution for images? 

And: Why not creating synths from, say 1000 images? Just with respect to performance?

Thanks in advance
ST
tbenedict (Over 1 year ago)
I don't know if there's an optimal resolution.  If I remember right, images do get down-sized before processing, but I forget to what size.  (I still upload full-size.)

I've done some 1000 picture synths.  They do work.  But yeah, you take a hit in performance.  That much math just plain takes time.  So use a fast computer with lots of memory and a fast network connection.

Tom
Nathanael.Lawrence (Over 1 year ago)
Hi, Sastay1,

Tom is right. Although Photosynth *uploads* the full resolution photos to the site, it only matches them based on 1.5 or 2 megapixel versions of the photos.

Once uploaded, the full photos have been converted to Microsoft Seadragon's Deep Zoom Image format, so it doesn't matter how big they are, they'll all load on demand at the same speed. In other words it only loads as much of each photo as currently is displayed on your screen at the time. Once you zoom in to smaller details it will load those parts and so on, so essentially there's no such thing as an image that's too big.

Using 1000 images just takes a more powerful computer to succeed and as Tom said, takes a lot more time to complete. The complexity grows exponentially so using double the photos takes more than twice as long to process. Since not everyone's machine is capable of completing a big synth, it's advised against.
Nathanael.Lawrence (Over 1 year ago)
It's also the case that although that many photos may be good for reconstructing a poingcloud model of whatever you're shooting the chances that someone will want to look at every one of those photos is not great. 

Even in the rare (hypothetical?) cases where all 1000 are beautiful images and came out 100%, it becomes cumbersome to navigate to where you intend to in a synth when there are 999 alternatives to turn to.
serrkan (Over 1 year ago)
jhj
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