图像的通道和深度以及图像的像素点操作完全解析https://blog.csdn.net/u013355826/article/details/64905921
opencv中图像基础（大小，深度，通道）https://blog.csdn.net/qq_18343569/article/details/47830503?depth_1-utm_source=distribute.pc_relevant.none-task&utm_source=distribute.pc_relevant.none-task
