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Log

In terms of differentiating 'interesting' images, would it also be equally as valid to look at other aspects, for example, the color data of the image, instead of just the edges?

keenan

@Log Yes, absolutely. Though we'll see later on that overall intensity (i.e., brightness) is the most important factor in terms of human perception.

cupoftea

Can you explain in greater detail on how the norm of the derivative captures the edges?