save image structure

• 保存图像结构

save image structure的用法和样例：

例句

1. The contrastively experimental results show that the image preprocessed with this algorithm has a clear structure and retains the feature of thread and direction.
   通过对比实验表明，经过该算法预处理后的图像结构清晰，保持了方向性和纹理性的特点。