Convolutional Neural Networks — The Breakthrough That Cracked Vision
The convolutional neural network is the architecture that finally solved computer vision — and it did so with an idea as elegant as it is powerful: slide a small learnable filter across the image, everywhere, looking for patterns. CNNs automated the feature engineering that classical vision did by hand, learning a hierarchy from edges to objects directly from pixels. This post explains how convolution works and why it was exactly the right inductive bias for images.
The CNN solved vision by learning features instead of hand-designing them. Convolution slides a small learnable filter everywhere — local connectivity and parameter sharing give translation invariance for free — and stacking layers builds a hierarchy from edges to objects. The right inductive bias for images.