1. Dataset for Machine Readable Zones:

A. Hartl, C. Arth, and D. Schmalstieg, “Real-time Detection and Recognition of Machine-Readable Zones with Mobile Devices,” in International Conference on Computer Vision Theory and Applications (VISAPP), 2015.

This dataset is separated in 3 parts and has a total size of around 21 GB. To collapse the individual part files into extractable tar.gz files, use

cat mrz_rand_0.tar.gz.parta* > mrz_rand_0.tar.gz
cat mrz_rand_1.tar.gz.parta* > mrz_rand_1.tar.gz
cat mrz_rand_2.tar.gz.parta* > mrz_rand_2.tar.gz