What is computer vision and how it works

The concept of computer vision is based on teaching computers to process an image at a pixel level and understand it.
Technically, machines attempt to retrieve visual information, handle it, and interpret results through special software algorithms.
Human vision and computer vision systems process visual data in a similar way.

Machines can mimic the way people see and perceive visual content.
But the key difference is that computers can only see the digital representation of an image.
Humans can see far beyond visual content.
We can understand the semantic meaning of an image.
Machines can only detect pixels.