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Topic: Synth of our Dining Room

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gavindjharper (Over 1 year ago)
Well, here is my first Synth folks, love you to comment. We're in the process of restoring an old house, which is run as a Guest House www.plas-llwyngwern.com. The idea is to use this technology to document the restoration of the house, taking synths before and after the restoration, to make a kind of historical record of the house.

I think the software is great; I'd absolutely love a more sophisticated editor though, where you could delete individual views if they were misplaced by the software, or manually give the software a hint as to where a particular view should be positioned. 

I know everything is hosted online; but is there such a thing as a "synth" file format, where you can download your synths and save them for posterity? There's a whole argument to do with data security e.t.c. and it is probably safer online, but it would be nice to have a "hard copy" as it were.

http://photosynth.net/edit.aspx?cid=c0cd00ab-7869-4347-9787-d53fee736fad&wa=wsignin1.0
Nathanael (Over 1 year ago)
Gavin, there's no simple single 'synth' file used on a public implementation of Photosynth.

Rather, there are: 
>> the photos, each converted to a DZI (Deep Zoom Image or Deep Zoom Item - this is essentially a series of folders, each folder containing tiles of different resolutions of the photo or image), 
>> a DZC (Deep Zoom Collection - this is an index of all DZIs in the collection as well as tiles for an overview of all the DZIs at once), 
>> a binary file, containing all the pointcloud files as well as a JSON (Javascript Object Notation) file, outlining the positions of all of the points. Each pointcloud is actually divided into an arbitrary number of .bin files, each having a common maximum number of points.
Nathanael (Over 1 year ago)
When a synth is being constructed, there will be a 'Photosynther' folder created within your 'Temp' folder. Within 'Photosynther' will be an 'images' folder in which will appear a DZIZ file for each image in the synth. This is essentially Deep Zoom Item Zipped. If you add '.zip' to the end of the filename, you'll see what I mean.

The same applies to the binary file and the DZCZ file. 

Collecting the DZI's is simple. Just wait for the synther to finish the 'Generating image tiles' phase and then the entire 'images' folder can be copied (not moved) to another location on disk. The converted images will begin uploading as soon as each is converted. 

Collecting the DZCZ and BIN can be challenging if your synth is small enough for the images to have uploaded before the scene reconstruction completes. Provided that the upload is not finished, you can copy the DZCZ and BIN to the folder that is housing your copy of the 'images' directory.
Nathanael (Over 1 year ago)
If the upload completes, though, the images folder, dzc, and bin will all be deleted from your computer, leaving only a .log file behind that documents the construction process of your synth.

To find your Photosynther folder type %temp%\Photosynther into the 'Run' command prompt or a 'My Computer'|Windows Explorer address bar (not Internet Explorer, mind you).

Sadly, although I know how to save these files, they must be decompressed in the proper folder naming structure and then you must somehow know how to tell the Photosynth plugin how to open the files off of your hard drive.

There's a recap of what I've said here in this other topic: 
http://photosynth.net/discussion.aspx?cat=01b6f15f-42eb-49cb-a221-ed56615e1c47&dis=6678f874-f29e-4254-b19b-40868f30d8d3
gavindjharper (Over 1 year ago)
Wow Nathaneal.... *AWESOME* Post.... So I guess that these file structures are what is uploaded to Microsoft's server? Your posts are so rich and informative. Thanks immensely for your answers to my questions.

I guess as synthing becomes more established, we will see the emergence of a more complicated synth program. I'm interested in whether, as the computing power grows, Microsoft will 're-synth' the pictures, for example, to bend them to join better if you get my drift - to take into account lens aberrations e.t.c. I'm really enjoying my little synth journey. As it stands, I'm dumping all of the source images into a folder, so that as the software develops and becomes more complex, I can always "re-synth" as I go.

If anyone is interested... a synth of our drawing room...
http://photosynth.net/edit.aspx?cid=5BDE9C58-E2D6-487B-88B2-F81D2E4E8DAC&firstview=1
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