对原始噪声图像进行空间域图像增强,对比通过加法，减法，乘法，除法，对数变换，灰度变换，线性滤波，直方图均衡，中值滤波等算法的实现效果-Noise on the original image space domain image enhancement, contrast through the addition, subtraction, multiplication, division, logarithmic transform, gray level transformation, linear filtering, histogram equalization, median filtering algorithm results