Machine Learning Simplified: A Beginners' Guide To Revolution by Kalakheti Rachin

Author:Kalakheti, Rachin [Kalakheti, Rachin]
Language: eng
Format: epub
Published: 2020-04-27T16:00:00+00:00

Fig 6-6. Image with it’s matrix equivalent (source: click here )

The elements in an image matrix ranges from 0 to 255 which is the intensity of that pixel (0 being darkest and 255 being brightest). But as you can see in the image above, the value ranges only from 0 to 1. Scaling down of pixels is done so that computing becomes efficient. This process of scaling down of pixels is called normalization .

The above image contains only black and white colour i.e. grayscale. Then, what for the coloured images?

You all might have heard that Red, Green and Blue are the fundamental colours. They are called so because all the other colours can be made by combination of these three colours. So, in coloured images, three Matrices are stacked together each representing a fundamental colour.

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