比较复杂的频域处理，它首先把图像通过傅立叶变换等等转换为频域的数据，然后用各种滤波器对图像进行处理。后来通过google在codeproject上找到这种基于频域的缩放算法-More complex frequency domain processing, it first through the Fourier transform, and so the image is converted to frequency domain data, and then use a variety of

this pdf file of google c++ style. This guide is for keeping a consistency and code manageability in the open source projects developed by Google using C++. xml version is available in http://code.google.com/p/google-styleguide/source/browse/tr