TensorFlow-Object-Detection-on-the-Raspberry-Pi: ImportError: libImath-2_2.so.12: cannot open shared object file: No such file or directory

Heya I’m trying to run the command "python3 Object_detection_picamera.py " and I keep getting the this stack being returned:

Traceback (most recent call last):
  File "Object_detection_picamera.py", line 23, in <module>
    import cv2
  File "/home/pi/.local/lib/python3.5/site-packages/cv2/__init__.py", line 3, in <module>
    from .cv2 import *
ImportError: libImath-2_2.so.12: cannot open shared object file: No such file or directory

I have followed all the instructions and just wondering what is the problem - have I missed something or is there something else that I need to install?

Thank you

Osian

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 15 (1 by maintainers)

Most upvoted comments

Install the following packages with apt-get:

libilmbase-dev libopenexr-dev libgstreamer1.0-dev

Worked for me!

+89

rribani on Oct 29, 2018

Hello, I encountered the same error. Install was on a brand new Raspberry Pi 4b with the Raspbian Lite OS.

ImportError: libImath-2_2.so.12: cannot open shared object file: No such file or directory.

I traced the dependencies and found that “libImath” is part of the libilmbase23 package, so this fixed the problem:

sudo apt install libilmbase23

However, that led to a second problem:

ImportError: libIlmImf-2_2.so.22: cannot open shared object file: No such file or directory

Again, tracing the dependencies led to “libIlmImf” being part of the libopenexr package. This was only available in a dev package, so the fixed the second problem:

sudo apt install libopenexr-dev

And boom! We are up and running. Hope this helps.

+17

justinmiller24 on Jan 2, 2020

This is still an open issue. The above apt-gets didnt solve the problem in Raspberry Pi 4.

agneevguin on Oct 25, 2019

this is no libilmbase23, how to fix it

Lizhiteng on Nov 13, 2020

For me after installing sudo apt install libopenexr-dev, I installed another library which is missing sudo apt-get install -y libgtk-3-dev

Vishaan24 on Jun 8, 2021

Hello, I encountered the same error. Install was on a brand new Raspberry Pi 4b with the Raspbian Lite OS.

ImportError: libImath-2_2.so.12: cannot open shared object file: No such file or directory.

I traced the dependencies and found that “libImath” is part of the libilmbase23 package, so this fixed the problem:

sudo apt install libilmbase23

However, that led to a second problem:

ImportError: libIlmImf-2_2.so.22: cannot open shared object file: No such file or directory

Again, tracing the dependencies led to “libIlmImf” being part of the libopenexr package. This was only available in a dev package, so the fixed the second problem:

sudo apt install libopenexr-dev

And boom! We are up and running. Hope this helps.

This solved the issue for me!

amirtabai on Mar 23, 2020

I have Raspbian Lite with no UI installed on a Pi 3A+. I followed @rribani’s instructions above which got me past the error in this issue, but I encountered a further problem when the script couldn’t find the picamera Python module. I installed that using sudo apt-get install python3-picamera.

That allowed the script to work, but it killed itself after a minute or so with a std::bad_alloc exception, likely because it couldn’t create a window to show the image from the camera.

Now I’m loading a minimal PIXEL desktop… stay tuned.

daverooneyca on Jan 2, 2019