1. Crack Viewer: http://www.fast-corp.co.jp/eng/fcv-21.html
2. IRP-100: http://www.fast-corp.co.jp/products/concrete/irp-100.html
3. Architectural Institute of Japan: Shrinkage Cracking in Reinforced Concrete Structures–Mechanisms and Practice of Crack Control, Architectural Institute of Japan, Tokyo (2003)
4. Dare P.M., Hanley H.B., Fraser C.S., Riedel B., Niemeier W.: An operational application of automatic feature extraction: the measurement of cracks in concrete structures. Photogram. Rec. 17(99), 453–464 (2002)
5. Kawamura K., Miyamoto A., Nakamura H., Sato R.: Proposal of a crack pattern extraction method from digital images using an interactive genetic algorithm. Proc. Japan Soc. Civil Eng. 742, 115–131 (2003)