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Think about it like this: for a 100x100 image, there are 100!*100! ways to double-shuffle. But there are 10000! ways to shuffle the pixel. So a lot of structure
by petters 10y ago
Think about it like this: for a 100x100 image, there are 100!*100! ways to double-shuffle. But there are 10000! ways to shuffle the pixel. So a lot of structure remains in the double-shuffled image.
- OskarS 10y agoIn case your point is not obvious to someone, 10000! is FAR larger than 100!*100! (by something like 350,000 orders of magnitude), so the possibility space is vastly bigger if you shuffle the pixels individually than if you shuffle columns first, then rows.