I have some problems with training CNN :(
For example: Input 6x6x3, 1 core 3x3x3, output = 4x4x1 => pool: 2x2x1
This tutor and other tutors are explain to calc deltas for weights and Input only for 2D:
input*output=deltas for 2D weights
filter*out = input delta
But how I can to calc weights deltas for 3D filters?
I must to multiply each input by output as below?
FilterLayer1Delta = OutputDelta * InputLayer1 ?
FilterLayer2Delta = OutputDelta * InputLayer2 ?
FilterLayer3Delta = OutputDelta * InputLayer3 ?