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The issue with this is that you (most of the time) don't want your image representations to be immune to geometric transformation. A rotated p should be recogn
by im3w1l 7y ago
The issue with this is that you (most of the time) don't want your image representations to be immune to geometric transformation.
A rotated p should be recognized as a d. In nature pictures you want to recognize blue at the top as sky and blue at the bottom as water.
- bobbylarrybobby 7y agoI think that's taking a dim view of what machine vision should be capable of. If a picture is rotated 180 degrees, upside down text should be recognized as its flipped version, i.e., the word "6op" should be read as "dog" having been rotated. Similarly a machine should be able to tell if it's looking at the reflection of the sky in a lake. And disregarding entire scenes, any object upside down (upside down chair, upside down dog, upside down car, ...) is clearly recognizable as such to a human, and hence should be to a machine as well.
- im3w1l 7y agoUpside down objects and scenes look alien to us. We can recognize them but not without effort. It's a combination of having seen objects upside down before and being able to reason about what we are seeing. It does not come for free from invariance.
- dr_zoidberg 7y agoThe classic Thatcher illusion[0]. [0] https://en.wikipedia.org/wiki/Thatcher_effect https://en.wikipedia.org/wiki/Thatcher_effect Edited for clarity, started writing then wiped half and didn't check first half.