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Lecture 10A Questions

The questions below are due on Thursday April 22, 2021; 08:00:00 AM.
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The image below was created by computing the inverse DFT on a 24-by-24 array of DFT coefficients, of which at most 5 were non-zero. Black represents a value of 0 and white represents a value of 1. The origin is in the center; r increases downward and c increases to the right.

In the box below, enter the locations (k_r, k_c) of all non-zero values in the associated DFT. Enter your answer as a Python list of (k_r, k_c) tuples. If it could not have been made from an array of the form described above, enter None in the box instead.

Nonzero coefficients: