Errors occurring with exif-collect - missing image width/height

[blalbrit]

Error message: "exif-collect : undefined method `image_width' for nil:NilClass"

This error has been cropping up sporadically lately - see: https://argo.stanford.edu/catalog/druid:bf129yg5332 for example

A quick check on underlying content shows that imagemagick is not retrieving available exif data

• in /dor/assembly/bf/129/yg/5332/bf129yg5332/content
• run identify -verbose SABCPA1F0300000010.JPG
• NOTE: no exif info produced
• run exiftool -a -u -g1 filename SABCPA1F0300000010.JPG
• returns "Image Width : 962
  Image Height : 1533"

Looks like the data is in the file headers but is not being retrieved by exif-collect.

[blalbrit]

I've modified this particular object while trying to diagnose the problem. Additional examples can be found here: https://argo.stanford.edu/catalog?f%5Bproject_tag_ssim%5D%5B%5D=SabinAmericana&f%5Bwf_wps_ssim%5D%5B%5D=assemblyWF%3Aexif-collect%3Aerror&page=1

[blalbrit]

Based on the experiment mentioned above, this seems to occur only on some image files, not on entire objects. In the current batch (see link above), these are the first image in an object.