The GRUHD database of Greek unconstrained handwriting

We present the GRUHD database of Greek characters, text, digits and other symbols in unconstrained handwriting mode. The database consists of 1,760 forms that contain 667,583 handwritten symbols and 102,692 words in total, written by 1,000 writers, 500 men and equal number of women. Special attention was paid to gathering data from writers of different age and educational level. The GRUHD database is accompanied by the GRUHD software that facilitates its installation and use and enables the user to extract and process the data from the forms selectively, depending on the application. The various types of possible installations make it appropriate for the training and validation of character recognition, character segmentation and text-dependent writer identification systems.