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    How to import OpenCV in Python3?

    Software Development
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    • M
      modaltb ModalAI Team
      last edited by 24 Dec 2020, 18:22

      Hi @Alex123 ,

      The opencv-3-4-6 project above isn't a python3 package installation rather for c++, for example:

      https://gitlab.com/voxl-public/other/voxl-opencv-3-4-6/-/blob/master/examples/april-tag-detect/april-tag-detect.cpp

      Are you requirements Python3.6.9 and OpenCV 3.X? (let me know specifics if possible).

      If so, do you requirements allow you to run your program in a Docker container on VOXL?

      Thanks!

      1 Reply Last reply Reply Quote 0
      • A
        Alex123
        last edited by 29 Dec 2020, 06:23

        Yes, I have to run my program using Python3.6.9 and OpenCV 4.X.
        And it wouldn't allow running a program on Docker container on VOXL.

        1 Reply Last reply Reply Quote 0
        • C
          Chad Sweet ModalAI Team
          last edited by 29 Dec 2020, 06:56

          The easiest path is to use an Ubuntu Docker container on VOXL. https://docs.modalai.com/docker-on-voxl/

          Otherwise you will have to build the python bindings for OpenCV. We have never tried this, but it looks well documented here: https://docs.opencv.org/master/da/d49/tutorial_py_bindings_basics.html

          A 1 Reply Last reply 7 Jan 2021, 12:43 Reply Quote 0
          • A
            Alex123
            last edited by 29 Dec 2020, 10:29

            @Chad-Sweet
            If I'll use an Ubuntu Docker container on VOXL, can you provide documentation or steps using which I can build OpenCV4.x on Python 3.6.9?

            Or a pre-build file of OpenCV4.x for Python3.6.9?

            Thanks!

            1 Reply Last reply Reply Quote 0
            • A
              Alex123
              last edited by 31 Dec 2020, 12:17

              How can I use OpenCV4.x with Python3.6.9 using Ubuntu Docker container on VOXL?

              1 Reply Last reply Reply Quote 0
              • C
                Chad Sweet ModalAI Team
                last edited by 31 Dec 2020, 17:02

                You can use apt to install, follow any normal Ubuntu instructions

                1 Reply Last reply Reply Quote 0
                • A
                  Alex123 @Chad Sweet
                  last edited by 7 Jan 2021, 12:43

                  @Chad-Sweet
                  I'm using the Ubuntu Docker container on VOXL.
                  OpenCV4 in Python3 is working.

                  But I'm facing issues while mounting sdcard on it.
                  I'm referring to this link.

                  I'm using the below command to mount sdcard.
                  docker run -v /mnt/sdcard:/root/yoctohome/:rw -w /root/ roskinetic-xenial:opencv

                  How can I mount a sdcard on the Ubuntu Docker container on VOXL?

                  T 1 Reply Last reply 8 Jan 2021, 18:15 Reply Quote 0
                  • T
                    tom admin @Alex123
                    last edited by 8 Jan 2021, 18:15

                    @Alex123 You should be able to mount the sdcard directory using the following param
                    docker run -v /sdcard:/sdcard

                    A 1 Reply Last reply 14 Jan 2021, 06:52 Reply Quote 1
                    • A
                      Alex123 @tom
                      last edited by 14 Jan 2021, 06:52

                      @tom
                      I've tried docker run -v /sdcard:/sdcard, but not working. It's not showing sdcard directory.

                      1 Reply Last reply Reply Quote 0
                      • T
                        tom admin
                        last edited by 15 Jan 2021, 19:57

                        @Alex123 here is the exact command I tested with on a VOXL.

                        docker run -it --rm --privileged --net=host --name roskinetic -v /home/root:/root/yoctohome/:rw -v /sdcard:/sdcard -w /root/ roskinetic-xenial:v1.0 /bin/bash

                        Can you try this?

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