Yusuke Fujita Yoshihiko Hamamoto A Robust Method for Automatically Detecting Cracks on Noisy Concrete Surfaces. 76-85 2009 IEA/AIE http://dx.doi.org/10.1007/978-3-642-02568-6_8 conf/ieaaie/2009 db/conf/ieaaie/ieaaie2009.html#FujitaH09