Notes on photo sphere/panoramic EXIF metadata
- Google's EXIF/XMP metadata tag specification for panoramic images
- Panorama images with sky are to have a negative value for the CroppedAreaTopPixels tag. (The panoramic viewer of Facebook ignores the value altogether, though, and assumes the horizon in the middle of the picture.)
- If a camera or software normally produces panoramic images with cylindrical projection, then doing a vertical capture actually produces a transverse cylindrical image. There is no standardized value for the EXIF ProjectionType field to cover this. (One option is to reproject them to equirectangular — which, again, is not very well supported.)
- Facebook's document on what tags to set
- The Facebook web interface insists that FullPanoHeightPixels be half the size of FullPanoWidthPixels. Else you get “no new photos were uploaded”.
Posted 2024-04-25 12:04 / Tags: Photo. / link
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Separate an accidentally amended commit again.
$ git add -p
[...hack hack hack...]
$ git commit --amend
# oops! intended git commit rather than git commit --amend;
$ git stash (optional)
$ s=$(git rev-parse HEAD)
$ git reset --hard HEAD@{1}
$ git cherry-pick -e $s