优秀链接
1. https://opencv.org/ (OpenCV 官网)
2. https://zh.osdn.net/projects/sfnet_opencvlibrary/releases/ (国内下载镜像，下载速度快)
3. http://www.pianshen.com/article/4713262635/ (Android Studio 3.2.1 配置 OpenCV 详解 <这个网页会跳广告！>)
4. https://blog.csdn.net/qq_36992688/article/details/79214273 (Android Studio上使用OpenCV-android-sdk, 很好的入门SOP)
5. https://blog.csdn.net/qq_15698613/category_9292368.html (OpenCV实践--从入门到精通，专家博客)
6. https://docs.opencv.org/3.4/df/d9d/tutorial_py_colorspaces.html (change color space)
7. https://answers.opencv.org/question/13864/coreinrange-opencv-231-android/ (change color space in Android sample code)
8. https://docs.opencv.org/3.4/d2/d96/tutorial_py_table_of_contents_imgproc.html (OpenCV优秀导读文章)
