Comparing two images and precisely tell whether they are the same or not

I've been failing to get an opencv script working to compare two images and identify whether the objects shown are the same or not with a high level of accuracy.

For example, these two pictures show two objects that despite their equal dimensions are not the same. Is there any guide/tutorial that could guide me through the process?

https://preview.redd.it/r6bbabm8u3rc1.jpg?width=640&format=pjpg&auto=webp&s=73785b02f7e293c3264e45a60005801390a51fea

https://preview.redd.it/79x4yem8u3rc1.jpg?width=640&format=pjpg&auto=webp&s=f5b5c66c620af177a4662987074ab5e0ca50d87b

accuracy computervision dimensions example identify images objects opencv show