Convolution: Kernels Slide Over Pixels
How filters detect edges and textures.
An Image Is Just Numbers
To a network, a photo is a grid of pixel values. A small grayscale image might be 28x28 numbers, each from 0 (black) to 255 (white).
Why Not Just Flatten It?
Flattening an image into one long vector throws away the spatial layout. Pixels near each other matter, and a plain dense layer ignores that.
All lessons in this course
- Convolution: Kernels Slide Over Pixels
- Stride, Padding & Pooling
- Channels, Feature Maps & Receptive Fields
- Assemble a CNN Image Classifier