OK, Paul … there are two routes once you’ve taken your pano.
a) use the file that Go4 creates (see note below) with/without tweaking in Photoshop (or similar) … on phone or computer,
b) take the 34 images that the pano exercise creates and stitch together on computer. (For a much higher resolution pano.)
Looking at (a)
See my post @ Here's a discovery! ... in relation to Mavic stitched 360° Panoramas to find the best quality image to work from.
… then jump to the uploading note below.
Looking at (b)
This can depend a bit on your photo editing skills … but, initially, locate the 34 images that will be on your SD-Card. Depending on your settings, these just be jpegs, or may also be .dng RAW files.
I always create both, and sometimes more can be extracted from RAWs, but even the one of Lymington (above) was just created from the jpegs. If you know how to play with RAW, I’ll leave that to you to tinker and create low compression jpegs from them (or png).
Next, download and install Microsoft ICE (Image Composite Editor) and load the 34 pics into it. (There are other apps - but to get a feel, it’s a straight-forward app to use … and works well/quickly for most panos with good detail everywhere.)
ICE is quite intuitive - but you need to select “Spherical” in after the images have been stitched in Step 2 of the app, then select “Auto complete” in Step 3 (which prevents a slightly wiggly line at the top of the stitching).
Go to Step 4 and export the image. I usually export as TIFF … since we need to take the result to Photoshop (or similar).
To create undistorted pano-spheres, the image needs a 2:1 width:height ration, and the image created by ICE (and other apps) from the 34 images, won’t be this ration since there are no straight up images. (Go4 cheats and blurs the top to create the sky area.)
In Photoshop, you can tweak the image if you want, then you need to add space (Image/Resize/Canvas) to the top to create the needed ratio … and fill the space with a “nice sky colour”.
You’ll see this added area/colour at the top of my Lymington pano, above.
You then need to resize the image to 4000 x 2000, and save as a jpeg/png.
c) So, now you have your 2:1 image from (a) or (b) … you need to follow the instruction in Interactive 360 Panoramas - How To Post on GADC to create what I have above.
I’m looking at another option to c) … more on that when I see if it’s possible.