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Publishing High-Resolution Images

You can use WISroGIS to create custom maps and publish in your site your own high resolution images. To achieve best performance, the images are loaded using Zoomify file format.

Zoomify works by slicing an image into many pieces or 'tiles' - as in a mosaic. Zoomify performs this dicing on many versions of the image, each at a different resolution or size. The result is a pyramid of tiles (a set of folders and images) which a web site visitor can navigate within to view any part of the image at any level of zoom. Viewing is fast and interactive because each view that the visitor zooms and pans to involves the download of only a small number of image tiles, each of which is small in size (see the Zoomify FAQs page for more details).

  1. Use your high resolution image to create and upload your Zoomify files & folders structure on your server
  2. Go to Layers Manager and create a new Zoomify Layer, entering the relative path to the root folder of the Zoomify data structure; you also need to specify the width and height of the full image.
  3. Create a new map and add the new layer to it
  4. Check out the resulting map for this tutorial

Sample Image courtesy of http://avialogs.com/

 

There a number of solutions available for creating your own Zoomify tiled images.
If you need additional support, please do not hesitate to contact us.

Why publishing images using Zoomify layers ?

Zoomify format offers high-quality images ready for interactive viewing on the web. These image pieces are prepared for views of the map (image) at different resolutions (levels of zoom). The tiles can be loaded on-demand by the map, according to user-chosen map extent (position) and zoom level.

Key benefits of publishing images usign Zoomify file format:

  • Smallest possible downloads: image data is never downloaded until the user decides to view it.
  • No redundant downloads: server-side and client-side caching ensures that requested data from the web server is available for subsequent requests
  • Instant display: the requests for image 'tiles' are based on simple naming convention, avoiding the need to download a large index of tile offset data.
  • Fully-distributed processing: all logic including identification of the current view, the needed tiles, and any offset information, occurs in the map on the end-user's computer. This completely distributed processing ensures your web server is able to handle the maximum possible site visitors with the minimum possible effort and no slow-downs as users enjoy zoom-and-pan access to your image content

For more details about Zoomify please visit Zoomify FAQs page for more details

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