图象邻域平均，，实现3×3邻域平均和7×7邻域平均的平滑处理，再将其改进，实现改进邻域平均的平滑处理-Image neighborhood average, and achieve 3 × 3 neighborhood average, and 7 × 7 neighborhood average smoothing, and then its improvement, to achieve improvements in the neighborhood average smoothing