说明： 重要参数的提取，基于分段非线性权重值的Pso算法，包括最后计算压缩图像的峰值信噪比和压缩效果的源码。 ( Extract important parameters, Based on piecewise nonlinear weight value Pso algorithm, Including the final calculation of the compressed image peak signal to noise ratio and compression of the source.)
