中文说明：
对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 noisy images with different noise intensities, particle swarm optimization algorithm is used to optimize the structural elements, find the optimal structural elements, and denoise the image to make the restored image reach the maximum peak signal-to-noise ratio