I am sorry but that just makes no sense, the information entropy of a number is raw entropy with 0% noise/signal ratio.
I am sorry but that just makes no sense.
When you consider a picture, which has bits of repeating colors all over the place, that is just not raw entropy anymore, because the bits of the colors are repeating. I highly doubt that is high quality randomness.
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But just the dice itself, which is not even in the same language, I doubt it. It's the bits that are the language, and repeating bits are not a good quality.
The photo as is is not high quality randomness, but it has much more total entropy than the dice roll values.
Think about it, if you roll ten dice and record the values, they have 60466176 possibilities, how many possible images of the dice do you think there are?
Definitely many more, and entropy is just a measure of the amount of possibilities (adjusted by probability, so that equal probabilities have more entropy than different probabilities).
Also, high quality randomness is not very important for the seed value, a ten bit seed is inadequate no matter how high-quality they are are, but 65536 bits are enough even if each bit is biased 10% to 90%.