How can I convert Mat in opencv to numpy?

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please, no screenshots of code or error messages here.
(they’re useless, cannot be indexed, ppl can’t try your code, etc.)
replace with TEXT, thank you

…and it’s quite unclear what do you want to achieve…?

@zeng, can you please delete this duplicate question, and spare us double work ?

I’m very sorry, how can I delete this, it reminds me that I have no permission :joy:

however, let’s keep the discussion on the other thread, not on both, ok ?