Sample Data for ICDAR'24 MapText Competition

Data set of 353 image tiles (2Kx2K) cropped from 31 historical maps taken from nine (9) atlases for the ICDAR'24 Competition on Historical Map Text Detection, Recognition, and Linking. Annotations (sample.json) and images (sample/*.png within sample.zip) follow the format described at the competition website and can be evaluated using the official evaluation repository script. The data set contains 34,882 words in 31,200 label phrase groups; annotations result from automatically merging two distinct prior manual annotations (Boateng Asante et al. 2017 and Ray et al. 2018). As a result, all text on the maps has been marked, but—unlike the official competition data—the annotations likely contain false negatives among the grouping (meaning, some words that should be linked into groups are not), and some words may divided into separate annotations, even individual characters.