Non-scrolling tiles on Aware ImageServer (digitool.is.cuni.cz)

[ozarugit]

I've seen https://github.com/lovasoa/dezoomify/issues/157 where @psinacio requested help for http://digitool.is.cuni.cz (an Aware JPEG2000 ImageServer), and @incte8 solved it by providing a single download URL, with the answer "doesn't need dezoomify". So, if it's not a DeZoomify issue, apologies if I shouldn't be asking this, but...

Can someone offer guidance on how you produce that 'single download URL' from the URL of the root page(s) with tiled images (or URLs of 2-3 sample tiles)? The tiles are not smoothly scrollable (instead rather 'click to jump right/left/up/down') and their URLs & sizes, even the zoom level seem to be generated on the fly (based on screen port width, session ID, etc.).

As an example, a specific image I've looked at is http://digitool.is.cuni.cz:1801/webclient/DeliveryManager?pid=1116965 which forwards to http://digitool.is.cuni.cz:1801/view/action/nmets.do?DOCCHOICE=1116965.xml&dvs=1593160819771~194&locale=en_US&search_terms=&adjacency=&VIEWER_URL=/view/action/nmets.do?&DELIVERY_RULE_ID=3&divType= (but the dvs parameter changes over time and times out). The individual tile URLs seem to follow the pattern below (where I've used # as a placeholder to stand for numbers that keep changing):

http://digitool.is.cuni.cz:#/ImageServer/imageserver?&res=#&viewwidth=#&viewheight=#&x=#&y=#&imgClickX=#&imgClickY=#&rotation=0&requestId=#&filename=L2V4bGlicmlzL2R0bC9zdG9yYWdlX21hcC8yMDEzLzA3LzIyL3ZpZXdfMS8xMTE2OTY3&imageActionSelect=&display_plugin=false&usePid2=true&thumbnailActionSelect=&collectionName=&usePid1=true

Any ideas/hints? TIA

[lovasoa]

Hello and thank you for the report. I'm labelling it as "new site support".

[lovasoa]

Here are the steps to follow:

• open the zoomable image
• open your browser's network inpector, inside the developer tools (https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor)
• Zoom into the image to the maximum level
• In the developer tools, select the last loaded tile image, and copy its URL
• paste this URL in a new window. It should look like the following : http://digitool.is.cuni.cz:5881/ImageServer/imageserver?&res=1&viewwidth=2780&viewheight=7780&x=0&y=0&imgClickX=1761&imgClickY=1238&rotation=0&requestId=7&filename=L2V4bGlicmlzL2R0bC9zdG9yYWdlX21hcC8yMDEzLzExLzEwL3ZpZXdfMS8xMTcyMDI0&imageActionSelect=imageclick%2Czoomin&display_plugin=false&usePid2=true&thumbnailActionSelect=thumbclick&collectionName=&usePid1=true
• In the URL, replace the values of the parameters x and y with 0, and progressively increase the values of viewwidth and viewheight until you see the full image.

[ozarugit]

Thanks @lovasoa - this works (or at least in Firefox - not in Maxthon, haven't tried other browsers).

In fact, the viewheight is not crucial (i.e., even if it is excessively high, no error is produced), but for viewwidth there seems no option than to iterate, e.g. for the example above, 500 (default) - 3500 (error "the image cannot be displayed, because it contains errors") - 2000 (OK but incomplete) - 3000 (error) - 2500 (incomplete) - 2750 (incomplete) - 2870 (incomplete) - 2930 (error) - 2900 (OK, looks nearly complete but just in case...) - 2915 (error) - 2910 (complete, confirmed). It also takes a while to step through the HTML in the Network Monitor to find the right place. (OK, now I know it's marked by <img type="image" style="display: inline;" name="imageDis" id="imageDis" title="Zoom In Disabled" alt="Zoom In Disabled" src="imageserver?...> it may be easier to search for this next time.)

So... any chance DeZoomify will automate this process in the future?