Applying Second Order Least Square Regression Technology to Estimate Region Area. - Yi-Nung Chung; Yun-Jhong Hu; Chien-Chih Lin; Xian-Zhi Tsai; Chao-Hsing Hsu; Guo-Dung Lin; Kai-Chih Chuang (J. Inf. Hiding Multim. Signal Process., 2019)