问题:在ubuntu14.04中安装opencv3.1.0时,当cmake时出现ICV文件检验问题,即提示error:期望hash值与实际hash值不符
解决:1、从https://github.com/opencv/opencv_3rdparty/blob/ippicv/master_20151201/ippicv/ippicv_linux_20151201.tgz下载该文件
2、用其替换原opencv-3.1.0/3rdparty/ippicv/downloads/Linux-808b791a6eac9ed78d32a7666804320e/文件夹下的同名文件
3、重新cmake