Alexander Freytag Erik Rodner Trevor Darrell Joachim Denzler Exemplar-Specific Patch Features for Fine-Grained Recognition. 144-156 2014 GCPR https://doi.org/10.1007/978-3-319-11752-2_12 conf/dagm/2014 db/conf/dagm/gcpr2014.html#FreytagRDD14