我正在尝试在 CentOS 6 中安装 OpenCV。当我运行命令时
[root@cosmas opt]# sudo yum install libtiff4-dev libjpeg-dev libjasper-dev
它返回以下内容：
Loaded plugins: fastestmirror, presto
Loading mirror speeds from cached hostfile
* epel: mirror.fraunhofer.de
* rpmforge: nl.mirror.eurid.eu
Setting up Install Process
No package libtiff4-dev available.
No package libjpeg-dev available.
No package libjasper-dev available.
Error: Nothing to do
我做错了什么？谁能帮我？