可以广泛的应用于数据预测及数据分析,包括面积、周长、矩形度、伸长度，包括最后计算压缩图像的峰值信噪比和压缩效果的源码。- Can be widely used in data analysis and forecast data, Including the area, perimeter, rectangular, elongation, Including the final calculation of the compressed image peak signal to noise r