计算晶粒的生长，入门级别程序,包括最小二乘法、SVM、神经网络、1_k近邻法,包括最后计算压缩图像的峰值信噪比和压缩效果的源码。- Calculation of growth, entry-level program grains Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Including the final calculation of the compressed image peak signal to noise ratio and compression of the source.