What are Convolutional Neural Networks?

First things first, how are images even stored in a computer? In the above image, look how the brighter section of the channel plotted is the corresponding colour. These 3 channels or matrices come together to give us different colours, each element of the matrix denotes a pixel value ranging from 0 to 255. Gray-scale Images have one channel in them, in further discussion, when I refer to image, it is a gray-scale image. Input Size: For every small increase in the size of the input matrix, the number of parameters that have to be trained in the network increases greatly.