Alright but is there a way to actually quantify the amount of entropy an image has, to just make sure it's safe?
Because at least a dice roll can be quantified, because even a slightly deformed dice has 90% entropy, thats 2.3264662506 bits.
So any casino quality dice should be much better than that.
Well, if you take a picture of the 62 dice (and the photo has enough detail and clarity to make out the values of all the dice) then the photo would have to have
more entropy than the the dice rolls themselves. Each die value contributes its entropy to the photo, but additionally the exact orientations and exact positions of the dice relative to each other within the photo are random as well which increases the entropy. Furthermore, the background behind whatever you roll the dice on is likely to have some variations to its color and brightness which contributes additional entropy.