PT Unknown AU Andres Mafla Sounak Dey Ali Furkan Biten Lluis Gomez Dimosthenis Karatzas TI Multi-modal reasoning graph for scene-text based fine-grained image classification and retrieval BT IEEE Winter Conference on Applications of Computer Vision PY 2021 BP 4022 EP 4032 DI 10.1109/WACV48630.2021.00407 ER