We use sampling and Quantization to convert analog images to digital images. An image has two things.

1. Coordinates

Digitizing of coordinates is called Sampling. That is, converting the coordinates of the analog images to the digital images.

2. Intensity/Amplitude

Digitizing of Amplitude or Intensity is called Quantization. That is converting the Amplitude or Intensity of an analog image to a digital image.

BY Best Interview Question ON 24 Sep 2020