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Shouldn't zoomed photographs of smooth objects have mostly identical pixels, with the 9-dimension coordinates clustering around the all-pixels-at-the-same-inten
by obtu 15y ago
Shouldn't zoomed photographs of smooth objects have mostly identical pixels, with the 9-dimension coordinates clustering around the all-pixels-at-the-same-intensity axis?
Edit: Oh, the papers mention this is about feature extraction and they filter for high-contrast patches.
- nooneelse 15y agoYeah, not mentioning the filtering for high contrast makes this more confusing than it need be. Actually, the main link is worse than just not mentioning it... it says "randomly choose 3-by-3 pixel patches" and leaves it at that. Saying "random" rather than "random then filtered" is worse then just saying nothing and letting the reader guess that maybe there is something going on in the choosing.