Geeqie is a lightweight image viewer. It was forked from GQview. The development is focused on features for photo collection maintenance: raw format, Exif/IPTC/XMP metadata and integration with programs like UFraw, ImageMagick, Gimp, gPhoto or ExifTo
The current development can be found on Gitouris (https://gitorious.org/geeqie)
Add a 'filter filenames' (just helpful, there is in all applications), and do what you want with the 'Marks options' (clumsy).