Computer Science | Grinnell College

On Thursday, April 7, Ravi Chande 2011 and Dylan Gumm 2011 will give a talk in the “Thursday Extras” series:

Maps -- particularly old ones -- have proven a significant challenge to traditional optical character recognition systems. Intersections of text with other cartographic symbols, irregular word orientations, and unusual fonts all serve as sources of error. Previous attempts to improve OCR on maps have used pre-processing steps on the input image or various post-processing techniques on the strings output by OCR. Here, we present a system that attempts to combine an OCR system with the known geography of the map to improve text recognition.

Refreshments will be served at 4:15 p.m. in the Computer Science Commons (Noyce 3817). The talk, “Text recognition on historical maps,” will follow at 4:30 p.m. in Noyce 3821. Everyone is welcome to attend!