What is Digitization of data?

Digitization is the process of converting analog information into a digital format. For example, scanning of analog source like printed photos or taped text, images or videos into computers for editing.

Digitizing is the primary way of storing images in a form suitable for transmission and computer processing whether scanned or captured using an image sensor equipped device such as digital camera.

Stages of Digitization

Digitization occurs in two parts or stages, which are:

Discretization: This is the reading of an analog signal at regular interval (frequency), sampling the value of the signal at the point. Each reading is called a sample.
Quantization: This is the rounding of sample to a fixed set of numbers (such as integers).