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ml-recall

#gaussian-blur

1 question from Convolutional Neural Networks

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Question 1: Short answer

mediumAI-checkedConvolutional Neural Networks

The 2D Gaussian factorizes, G(x,y)=G(x) G(y)G(x, y) = G(x)\,G(y), so a 7×77 \times 7 Gaussian blur can be applied as a 7×17 \times 1 convolution followed by a 1×71 \times 7 one. Ignoring the image borders, how many times fewer multiplications per output pixel does the separable version need?

a number