Check to see if <CR> appears separately anywhere in the file, without a trailing <LF>? If we're seeing a binary <-> text mode corruption problem, there won't be any separate <CR>s. Any file that's flagged as only containing the <CRLF> sequence should then be checked manually in an image viewer to make sure it's okay.
(I don't know how to do the above with grep etc., but the actual match takes 1 line in Perl.)
I was about to open khexedit and study a few image files when I realized that not all corruption errors will be caused by CR/LF issues. I'm thinking Calvin's approach might be best?
Darrell