Clarification: A CMOS image sensor refers to a kind of camera sensor which you can find in a digital camera, which consists of an integrated circuit for recording an image.
The number of pixels contained in a CMOS (short for complementary metal-oxide semiconductor) image sensor is up to millions and each pixel contains a photodetector. When the light comes into the camera lens, it hits the CMOS image sensor, which drives every photodetector to accumulate an electric charge depending on how much light strikes the image sensor. This charge will be converted into pixels that form the image.
The CCD technology is a bit different from the CMOS technology and this type is also very popular. This technology is well known for consuming a low amount of power and running fast.
Also Called: complementary metal-oxide semiconductor image sensor