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A micrograph of the corner of the photosensor array of a webcam digital camera Image sensor (upper left) on the motherboard of a Nikon Coolpix L2 6 MP. The two main types of digital image sensors are the charge-coupled device (CCD) and the active-pixel sensor (CMOS sensor), fabricated in complementary MOS (CMOS) or N-type MOS (NMOS or Live MOS) technologies.
An off-the-shelf digital camera contains an infrared hot mirror filter that blocks most of the infrared and a bit of the ultraviolet that would otherwise be detected by the sensor, narrowing the accepted range from about 400 nm to 700 nm. Replacing a hot mirror or infrared blocking filter with an infrared pass or a wide spectrally transmitting ...
Hasselblad 503CW with Ixpress V96C digital back, an example of a professional digital camera system. A digital camera, also called a digicam, [1] is a camera that captures photographs in digital memory. Most cameras produced today are digital, [2] largely replacing those that capture images on photographic film or film stock.
The ISO setting on a digital camera is the first (and sometimes only) user adjustable gain setting in the signal processing chain. It determines the amount of gain applied to the voltage output from the image sensor and has a direct effect on read noise. All signal processing units within a digital camera system have a noise floor.
A separate but often related distinction is between focus priority and release priority – whether the camera will take a picture when the subject is out of focus or not. In focus priority, the camera will only take a picture when the subject is in focus (as detected by the AF system), while in release priority, the camera will take a picture ...
A cyclic redundancy check (CRC) is a non-secure hash function designed to detect accidental changes to digital data in computer networks. It is not suitable for detecting maliciously introduced errors.
A microbolometer is a specific type of bolometer used as a detector in a thermal camera. Cryogenic detectors are sufficiently sensitive to measure the energy of single x-ray, visible and infrared photons. [18] Pyroelectric detectors detect photons through the heat they generate and the subsequent voltage generated in pyroelectric materials.
A fixed position camera removes these components, relying solely on digital translation of the high detail camera image. Fixed-view fisheye cameras have a bowl-shaped 360-degree view. When mounted overhead pointing straight down, part of the viewed space appears sideways or upside-down on the VMS.