Consumer & Gadgets

Amazon's Ring to make police video requests public

Amazon's smart doorbell and camera offshoot Ring will make police requests for home security videos public, in a tweak to its policy apparently aimed at easing concerns about surveillance.

Consumer & Gadgets

A bug lets Eufy security camera access strangers' feeds

The owners of Eufy security cameras have announced a critical privacy bug. According to user reports on the Eufy parent company Anker's forums as well as Reddit, Eufy users can now access the camera feeds of strangers, including ...

Computer Sciences

'Unmaking' a move: Correcting motion blur in single-photon images

Single-photon imaging is the future of high-speed digital photography and vastly surpasses conventional cameras in low-light conditions. However, fixing the blurring caused by the motion of independent objects remains challenging. ...

Security

Blurred lines in face recognition

Face recognition has come on apace from a cliched trope of science fiction to a reality of the modern world with widespread use in photography databases, social media, and the security world. However, as with any tool, there ...

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Camera

A camera is a device that records images, either as a still photograph or as moving images known as videos or movies. The term comes from the camera obscura (Latin for "dark chamber"), an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.

Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. A majority of cameras have a lens positioned in front of the camera's opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture.

A typical still camera takes one photo each time the user presses the shutter button. A typical movie camera continuously takes 24 film frames per second as long as the user holds down the shutter button.

This text uses material from Wikipedia, licensed under CC BY-SA