1. VIAPIX® system: http://www.viapix.eu/.
2. ACTRIS Technologie and Innovation: http://www.actris.com/.
3. Automatic darkest filament detection (ADFD): a new algorithm for crack extraction on two-dimensional VIAPIX® pavement images;Kaddah;The Visual Computer,2018
4. Novel approach to pavement cracking automatic detection based on segment extending;Liu,2008
5. Pavement distress classification using neural networks;Chou;In Systems, Man, and Cybernetics, Humans, Information and Technology,1994