Sensor

Our eyes can capture red, blue and green – the primary colours. These colours are combined and represented the range of colours that we normally see in everyday life. In order to capture these range of colour, a sensor consists of three primary colour elements are needed. The sensor can be constructed into an array in which tiny parts known as pixels will be used to capture each of the three primary colours. There are two different types of sensor currently available and they vary in sizes:

CCD
It stands for Charge Coupled Device. Cameras available in the market either come with CCD or CMOS sensor. CCD sensor contains thousands or millions of tiny cells which transform light into charges. Charges are then transported and read at a corner using an analog-to-digital converter which will give a digital value. Each of this value will be stored and an overall image will be formed containing the different value.

CMOS
It stands for Charged Metal Oxide Semiconductor. The CMOS sensor made use of several transistors at each pixel that amplify and move each charge using traditional wires. Charges can be read individually and image will be formed.

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