APPLICATION OF SUB-PIXEL IMAGE CORRELATION TO NEAR FIELD GROUND DEFORMATION MEASUREMENTS OF WENCHUAN EARTHQUAKE
LIU Yun-hua, SHAN Xin-jian, QU Chun-yan, SONG Xiao-gang, ZHANG Gui-fang
SEISMOLOGY AND GEOLOGY . 2013, (1): 138 -150 .  DOI: 10.3969/j.issn.0253-4967.2013.01.012