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

[rribani]

Install the following packages with apt-get:

libilmbase-dev libopenexr-dev libgstreamer1.0-dev

Worked for me!

[justinmiller24]

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.