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 2024-04-28 20:04 / Tags: Photo. / link
Compilers.
When -fpic is not enough, you need to switch to -fPIC. Error message:
[ 560s] /usr/include/bits/stdio2.h:97:(.text+0x10):
relocation truncated to fit: R_SPARC_GOT13 against symbol "stderr@@GLIBC_2.2"
defined in .data section in /lib64/libc.so.6