Study on Information Extraction Method to Road Damage in Wenchuan
 Earthquake Based on High-resolution Remote Sensing Images
REN Yu-huan,LIU Ya-lan,WEI Chen-jie,HU Lei-qi
Remote Sensing Technology and Application . 2009, (1): 52 -56 .  DOI: 10.11873/j.issn.1004-0323.2009.1.52