Hi Peter, While the Exif header is a nice place to access such data and isn't that difficult to read, it's a real pain to write out. The only tool I know of that does so robustly is exiftool, which is free and well-documented. You can build a script around it such that you use the "ra_ppm | cjpeg" followed by a call to exiftool to insert the desired tags into the output. It works quite well.
Cheers, -Greg > From: Peter Apian-Bennewitz <[email protected]> > Date: April 12, 2013 7:11:09 AM PDT > > Hi folks, > > not that it matters much for daylighting .... but out of curiosity - > > has anyone written a converter from Radiance images to jpeg which tries to > convert the meta information in an hdr file as much as possible to EXIF > headers of jpeg ? > ("ra_ppm | cjpeg" works for sure, but the meta info is lost; exiv2 could be > used to put it back in via shell script, sure) > Handling it directly would be neat, wouldn't it ? , if just for keeping track > of images and their history, plus some translatable camera parameters like > effective focal length, details displayed by getinfo. EXIF is quite rich in > tags, see http://www.exiv2.org/tags.html and this metadata seems to be well > supported by images browsers , search engines and the like - if one wants to > disclose the details, which on webserver is doubtful, but in a local archive > useful. > > just wondering- > best, > Peter _______________________________________________ Radiance-dev mailing list [email protected] http://www.radiance-online.org/mailman/listinfo/radiance-dev
