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Using OpenZoomViewer With Zoomify Tiles
Hi,
I was wondering if there are explanations somewhere about how to use openzoom with zoomify formatted tiles.
I tried to take your example here :
http://gasi.ch/examples/2008/12/23/ph...
and twist it, but it doesn't work. Basically I downloaded OpenZoomViewer.swf and swfobject.js, fixed their paths in the html code of the page, and finally fixed the path of the "imageProperties.xml" file. But it's not sufficient apparently, I get only a black screen.
So to ask precise questions :
- Does OpenZoomViewer.swf really uses tiles formated for Zoomify ?
- What are exactly the paths to be modified ? Are there for instance some hidden paths in swfobject.js ?
I like the way your applet zooms and pans much better than the Zoomify Viewer.
Any help would be appreciated.
Best,
Sam
I was wondering if there are explanations somewhere about how to use openzoom with zoomify formatted tiles.
I tried to take your example here :
http://gasi.ch/examples/2008/12/23/ph...
and twist it, but it doesn't work. Basically I downloaded OpenZoomViewer.swf and swfobject.js, fixed their paths in the html code of the page, and finally fixed the path of the "imageProperties.xml" file. But it's not sufficient apparently, I get only a black screen.
So to ask precise questions :
- Does OpenZoomViewer.swf really uses tiles formated for Zoomify ?
- What are exactly the paths to be modified ? Are there for instance some hidden paths in swfobject.js ?
I like the way your applet zooms and pans much better than the Zoomify Viewer.
Any help would be appreciated.
Best,
Sam
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Inappropriate?Sam,
OpenZoom most definitely works with out-of-the-box Zoomify tiles. The best way to explore it is by downloading the official OpenZoom Photoshop Zoomify Export Plugin and export images directly from Adobe Photoshop.
http://open-zoom.googlecode.com/files...
Why going through the pain of downloading and putting together the pieces from my blog if you can easily download the entire packages and potentially tweak the source.
The following is another example of using OpenZoom with Zoomify:
http://www.oldmapsonline.org/publish/
In case you have trouble to get the Zoomify viewer to run locally, try to upload it to a server and test it remotely.
If you have legacy Zoomify tiles, feel free to build your own viewer using the OpenZoom SDK and in particular the ZoomifyDescriptor.
http://code.google.com/p/open-zoom/so...
Cheers,
Daniel
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Inappropriate?Hi,
Well, I do not have photoshop. Moreover, I work with gigapixel images (65536x65536 pixels) which are much too large to be handled as a single file (at least by my computer). I have them split into 8192x8192 tiles, that I throw into the Zoomify Image converter. I then perform some renaming on the tiles to get their name right, as if I had put the 65536x65536 image into the converter. The tiles are named x-y-z.jpg, where x is the zoom level, y the horizontal coordinate and z the vertical one. They are ordered according to x, z and y and then sorted into directories named TileGroupX containing each 256 tiles. Is this file structure the one expected by OpenZoom ?
And isn't it possible to give an html example of the use of OpenZoom, with the paths to be adjusted highlighted, or something like this ? It would be useful to anybody not willing to buy Photoshop just for this feature.
Thanks and best regards,
Sam -
Inappropriate?Sam,
I understand. Well, you can use it without owning Adobe Photoshop. OpenZoom implements the official Zoomify tile pyramid file format. Any output from Zoomify Express should work out-of-the-box:
http://www.zoomify.com/express.htm
Basically, if you can view it with the official Zoomify viewer, you should be able to view it with an OpenZoom viewer using ZoomifyDescriptor. If not, it's a bug and I'd appreciate if you post a bug report with instructions on how to reproduce the problem:
http://code.google.com/p/open-zoom/is...
I'm sorry for not having a tutorial but in general the OpenZoom project is about encouraging people to build their own viewers/applications for large images. It's fairly straightforward and all the code is available under the open source GPL 3 license, including various example applications:
http://open-zoom.googlecode.com/
Again, I've had other people reporting to only see a black screen with the OpenZoom Viewer for Zoomify but it always boiled down to missing Flash Player security sandbox settings. As for the paths it's really only the following line in the HTML that has to be adjusted:
<param name="flashvars" value="source={PATH}/ImageProperties.xml" />
Cheers,
Daniel
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Inappropriate?Oh, my apologies, it was really the security settings of the Flash player.
But how comes that the applet on your site did work, even if it is not among my trusted folders ?
Anyway thanks for this great zooming tool.
Best,
Sam
I’m happy
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Inappropriate?Sam,
No problem, I am happy we found the issue. The Flash Player security model is quite a beast but it boils down to the following. A file can either be in a local sandbox and communicate with local content, or be in a network sandbox and only communicate with content over the network. Now, the files you download would need be configured as to be in a local sandbox in order for them to work offline. However, since I assume people would like to upload their images, they would stop working online. Therefore, it is the other way around, the files don't work locally but will eventually when uploaded. And like you said, I also have all my security settings on «always ask» but they don't seem to get activated.
Nevertheless, I wish there was something I could do to prevent this problem for everyone but I am not sure how.
Cheers,
Daniel
I’m happy
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