变换域：
傅里叶，https://www.jianshu.com/p/9e786be6dccb；https://wenku.baidu.com/view/c5e2cca8fab069dc502201db.html
离散余弦变换，https://blog.csdn.net/shenziheng1/article/details/52965104
小波变换，xxx
几何变换：
https://blog.csdn.net/weixin_34348174/article/details/93527498
色度变换：
https://blog.csdn.net/u011574296/article/details/70237027
https://blog.csdn.net/aoshilang2249/article/details/38070663