Camera

Camera has a long history and in its simplest form is a device that captures light and records it as an image.

Think of a pinhole camera as the simplest form of it where the light from different objects in the scene passes through a small hole and forms an image on the opposite side.

It forms an inverted image because light travels in straight lines through a small aperture. One may ask why light travel in straight line?

Wikipedia: Pinhole camera

These light rays are captured by another sensor designed to take the light rays and convert them into an image. One may ask based on light rays how the image is formed by the film?

There are different types of cameras:

• RGB camera
• Gray scale camera
• IR camera
• Depth camera

rolling vs global shutter, dynamic range, noise