The results show that Fourier Series Smoothing method is not only an efficient method, but also is easy to estimate image quality using modulation transfer function.
试验结果表明:付立叶级数滤波法是一种行之有效的方法,并便利于用调制传递函数评价影象质量。
Filling missing values, smoothing noise data and removing inconsistent data were all adopted to get high quality data.
通过补全缺失数据、平滑噪声数据、消除不一致数据等技术,得到高质量的数据。
Image preprocessing: the image is processed by several algorithms including gray level stretch, homomorphic processing and image smoothing, and then the quality of image gets better.
图像预处理:采用灰度变换、同态滤波和平滑等方法对图像进行处理,提高了图像的质量。
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