最小二乘回归分析算法，抑制载波型差分相位调制，IDW距离反比加权方法，包括面积、周长、矩形度、伸长度，这个有中文注释，看得明白。- Least-squares regression analysis algorithm, Suppressed carrier type differential phase modulation, IDW inverse distance weighting method, Including the area, perimeter, rectangular, e