Processing Data With Stitch
The Stitch application is used to pre-process the data collected with the Survey app and prepare it
for upload to the iGUIDE Portal. The Stitch application can load and process multiple houses in
parallel and can run unattended during that time. Below is a typical Stitch workflow.
About iGUIDE Images
The iGUIDE camera collects 3 fisheye images for each 360-degree panorama. The Stitch application
can output 360-degree panoramas in two formats – six cubic tiles (always used) and photo spheres
(optional).
The iGUIDE viewer uses cubic panoramas composed of six square images as the six sides of a cube
(cubic tiles) with the view point being at the center of the cube. The cubic panoramas are the most
compatible way to display 360-degree images on a wide range of computing devices including
mobile phones. Another way to store 360-degree images is a photo sphere, where the complete
360-degree image is stored in one file in the equirectangular format with 2:1 aspect ratio for 360 by
180 degree coverage. Photo spheres are named s.pic. These files are created in each panorama
folder when the Export operation is performed.
Many 360-degree image viewers accept photo spheres, notable examples are Facebook and Google
Street View. The iGUIDE VR option also requires photo spheres.
Stitch allows editing panorama colors and alignment. Other image editing, such as editing out
photographer reflections in mirrors is best done using the original fisheye images before they are
imported into Stitch. Stitch outputs images in an encoded format for portal upload, so it is not
possible to edit Stitch output directly. Once the images are uploaded to the portal, they can be
downloaded for additional editing and re-uploaded again, one panorama at a time. There is a
limited time window when the cubic tiles can be modified on the portal after the iGUIDE has been
completed.
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