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| 2018-06-11 01:02:40 -0600 | answered a question | What does it mean “derivative of an image”? You can think an image as a function--f(x),which the x is the pixels and the f() is how the piexls are arranged on the |
| 2018-05-17 20:13:42 -0600 | received badge | ● Enthusiast |