Detect object on table

hi, I’m new to opencv. I would like to detect 4 specific objects on a table and activate a trigger when the object is no longer on the table or has been picked up by someone and also when it is resting on the table. according to which approach should I use? is it feasible to do it with open cv? objects must not be confused with other objects.

This problem is too vague… What kind of objects do you have? What are the conditions for the image?

Anyway, probably the simplest solution would be to use a detection deep neural network like Yolo (or a simplified version like TinyYoloV4).
Check this tutorial.

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example: wine bottle, oil bottle, sauce jar

make sure that if a person takes a bottle from the table, a video starts on the screen