中文说明：不同噪声强度的加噪图像，用粒子群优化算法优化结构元素，找到最优结构元素，对图像进行去噪操作，使恢复的图像达到最大峰值信噪比
English Description：
For the noisy images with different noise intensities, the particle swarm optimization algorithm is used to optimize the structural elements, find the optimal structural elements, and carry out the denoising operation on the image, so that the restored image reaches the maximum peak signal-to-noise ratio