Yes, you can consider light a discrete signal, too. I glossed over this because resampling a discrete signal is harder to explain than sampling a continuous sig

Yes, you can consider light a discrete signal, too. I glossed over this because resampling a discrete signal is harder to explain than sampling a continuous signal; I think about it as first reconstructing a continuous signal (typically by convolution) and then sampling it, as described here: http://graphics.stanford.edu/courses/cs248-05/samp/samp1.html http://graphics.stanford.edu/courses/cs248-05/samp/samp1.htm...