Web Reference: Dec 30, 2021 · Besides, I once got to know that '_registerMatType' is a new module introduced after 4.5.4, so I think maybe it is the answer. I got below error message when I run model_main_tf2.py on Object Detection API: Traceback (most recent call last): File "/content/models/research/object_detection/model_main_tf2.py", li... Feb 5, 2025 · When working with computer vision projects in Python, OpenCV is often the go-to library for image processing and manipulation. However, sometimes you may encounter an error message that reads: “cannot import name ‘_registerMatType’ from ‘cv2.cv2′”. Nov 29, 2021 · Using Google Colab and after installing TensorFlow Object Detection API I had these three packages installed: opencv-python, opencv-contrib-python, opencv-python-headless. Not sure why Google decided to to have them all installed or if they are not necessary. (you can check this here) I just updated their versions and that cleared the error.
YouTube Excerpt: You can download and install MathType easily. Not only all this, but it will also show you how you can register it within few steps.
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