Cheng B, Antani SK, Stanley J, Demner-Fushman D, Thoma GR. Automatic segmentation of subfigure image panels for multimodal biomedical document retrieval. Proceeding of: Document Recognition and Retrieval XVIII - DRR 2011, 18th Document Recognition and Retrieval Conference, part of the IS&T-SPIE Electronic Imaging Symposium, San Jose, CA, USA, January 24-29, 2011, Proceedings.