The full report PDF is available from MDPI - Open Access Publishing. The abstract claims the software does as well as a trained human and better than an untrained one. The report was published in Sensors volume 9 issue 9.
The researcher does explain that not just any optical mouse sensor will work, as images must be captured in real time, with a minimum resolution of 15x15 pixels (the team used 30x30 pixels). It is also better to use an LED- or infrared-based sensor, and not laser technology, as these[sic] provide images that are too wide.