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  • $\begingroup$ How $\frac{\partial E}{\partial w^l_{m', n'}}$ will look like in case my filter has multiple channels ? $\endgroup$ Commented Oct 10, 2018 at 14:11
  • 1
    $\begingroup$ gradient = signal.convolve2d(np.rot90(np.rot90(d)), o, 'valid') $\endgroup$ Commented May 7, 2019 at 20:02
  • $\begingroup$ I would like suggest to review this answer. In particular, the provided code in python might be checked $\endgroup$ Commented Jun 6, 2019 at 2:46