# Installing OpenCV-3.4.6.ipk fails on VOXL Emulator Docker Image (1.0.0)

Source: https://forum.modalai.com/topic/7/installing-opencv-3-4-6-ipk-fails-on-voxl-emulator-docker-image-1-0-0
Category: VOXL SDK and Software (https://forum.modalai.com/category/47/voxl-sdk-and-software)
Tags: opencv, docker, voxl-emulator
Posted: 2020-08-27 22:52:32 UTC by admin (ModalAI staff)
Replies: 1 · Views: 1953

## admin (ModalAI staff) · 2020-08-27 22:52:32 UTC

[GitLab Issues import](https://gitlab.com/voxl-public/voxl-docker/-/issues/2)

Installing OpenCV-3.4.6.ipk fails on voxl_emulator `opkg install OpenCV-3.4.6.ipk`. Even tried compiling and installing the generated ipk. Likely issue with installed `opencv2.4` version from ROS.
Deploy on VOXL target works fine.

## Reply by admin (ModalAI staff) · 2020-08-27 22:53:00 UTC

Total hack, but this just worked. We still need a clean way of uninstalling opencv2.4

```
$ opkg list | grep opencv
$ opkg remove lib32-opencv --force-removal-of-dependent-packages
$ opkg list | grep opencv
$ opkg remove lib32-opencv-dbg --force-removal-of-dependent-packages
$ opkg remove lib32-opencv-calib3d2.4 --force-removal-of-dependent-packages
$ opkg list | grep opencv
$ opkg remove lib32-libopencv-calib3d2.4 --force-removal-of-dependent-packages
$ opkg list | grep opencv
$ opkg remove lib32-libopencv-core2.4 --force-removal-of-dependent-packages
$ opkg install opencv_3.4.6_8x96.ipk
$ /usr/bin/opencv_version
3.4.6
```