Machine Learning Notes - Deep Learning Based on C++ 2. Realize Convolution Operation

1. Convolution

        Convolution is an old friend of the signal processing field. The original definition is as follows

        In machine learning terms:

        I(...) is usually called the input

        K(…) as the kernel, and

        F(...) as the feature map of I ( x) for a given K.

        Considering a multidimensional discrete domain, we can transform the integral into the following summation

          For 2D digital images, we can rewrite this as:

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