包括面积、周长、矩形度、伸长度，意信号卷积的运算,并且绘制图象，包括单边带、双边带、载波抑制及四倍频。- Including the area, perimeter, rectangular, elongation, Convolution operation is intended to signal and image rendering, Including single sideband, double sideband, suppressed carrier and quadruple