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Definitions (165)
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quantum efficiency
Quantum efficiency (QE) is a figure given for a photosensitive device (charge-coupled device (CCD), for example) which is the percentage of photons hitting the photo reactive surface that will produce an electron-hole pair. It is an accurate measurement of the device’s sensitivity.
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preamplifier noise
Unwanted noise that is generated by the on-chip output amplifier.
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primary colors
Three colors wherein no mixture of any two can produce the third. For electronic imaging these are the additive primary colors red, blue and green.
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progressive scan
The progressive scan is a format for reading an image in sequential order, line by line.
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readout
For electronic imaging the term refers to process of extracting the image, pixel by pixel from the sensor.
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region
Refers to an area that is user-defined, typical a rectangular area on the sensor that is exposed and processed as an image.
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region of interest
User-defined resolution, a rectangular exposure area on the sensor.
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resolution
A measure of the ability to resolve an edge on an object.
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responsivity
Similar to sensitivity this is a term for describing the rating of the output current from a camera sensor divided by the incident flux of light, usually expressed in signal current per watt of input radiation at a specific wavelength.
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roi
Region of interest.
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