How to install opencv-for-tegra after Jetpack flashing

Is there possible to install opencv4tegra after Jetson TX2 has been flashed? I have tried to search apt sources for opencv. However, there is no package found.

I have not tried it, but you may try to download the repository package:
Note this is for TX2 R28.1, and it requires at least CUDA8 to be installed

wget http://developer.download.nvidia.com/devzone/devcenter/mobile/jetpack_l4t/013/linux-x64/libopencv4tegra-repo_2.4.13-17-g5317135_arm64_l4t-r26.deb

Then install it with dpkg, add it to your apt repositories sources list, update and you should be able to find from apt these packages: libopencv4tegra libopencv4tegra-dev libopencv4tegra-python.

Thanks @Honey_Patouceul

I actually found that the .deb file is in ‘jetpack_download’ directory in host box. ‘libopencv4-tegra’ related package could be copied and installed easily.

ls ~/lib/jetpack_download/*arm64*.deb
/home/chaoj/lib/jetpack_download/cuda-repo-l4t-8-0-local_8.0.84-1_arm64.deb
/home/chaoj/lib/jetpack_download/libcudnn6_6.0.21-1+cuda8.0_arm64.deb
/home/chaoj/lib/jetpack_download/libcudnn6-dev_6.0.21-1+cuda8.0_arm64.deb
/home/chaoj/lib/jetpack_download/libcudnn6-doc_6.0.21-1+cuda8.0_arm64.deb
/home/chaoj/lib/jetpack_download/libopencv4tegra-repo_2.4.13-17-g5317135_arm64_l4t-r26.deb
/home/chaoj/lib/jetpack_download/libvisionworks-repo_1.6.0.233n_arm64_l4t-r26.deb
/home/chaoj/lib/jetpack_download/libvisionworks-sfm-repo_0.90.1_arm64_l4t-r26.deb
/home/chaoj/lib/jetpack_download/libvisionworks-tracking-repo_0.88.0_arm64_l4t-r26.deb
/home/chaoj/lib/jetpack_download/nv-gie-repo-ubuntu1604-ga-cuda8.0-trt2.1-20170614_1-1_arm64.deb