contrast reduction

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• Contrast-induced nephropathy — Classification and external resources ICD 10 N99.0 ICD 9 586 Co …   Wikipedia

• Reduction (philosophy) — Reduction is the process by which one object, property, concept, theory, etc., is shown to be explicable in terms of another, higher level, concept, object, property, etc. For example, we say that chemical properties such as the boiling point of… …   Wikipedia

• Contrast-to-noise ratio — Haze over Kuala Lumpur. Contrast to noise ratio (CNR) is a measure used to determine image quality. CNR is similar to the metric, signal to noise ratio (SNR), but subtracts off a term before taking the ratio. This is important when there is a… …   Wikipedia

• Display contrast — Contrast in visual perception is the difference in appearance of two or more parts of a field seen simultaneously or successively (hence: brightness contrast, lightness contrast, color contrast, simultaneous contrast, successive contrast, etc.).… …   Wikipedia

• oxidation–reduction reaction — ▪ chemical reaction Introduction also called  redox reaction        any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …   Universalium

• Truth table reduction — In computability theory, a truth table reduction is a reduction from one set of natural numbers to another. Truth table reductions are less powerful than Turing reductions, since not every Turing reduction between sets can be performed by a truth …   Wikipedia

• Class-size reduction — As an education reform, the broad goal of class size reduction (CSR) is to increase the number of individualized student teacher interactions intended to improve student learning. A reform long holding theoretical attraction to many… …   Wikipedia

• Demand reduction — refers to efforts aimed at reducing public desire for illegal and illicit drugs. This drug policy is in contrast to the reduction of drug supply, but the two policies are often implemented together. Some discussions of demand reduction make a… …   Wikipedia

• Vowel reduction in English — In English, vowel reduction is the centralization and weakening of an unstressed vowel, such as the characteristic change of many vowels at the ends of words to schwa. Stressed vowels cannot be reduced. Reduced vowelsSchwa is the most common… …   Wikipedia

• Photographic filter — Four photographic filters. Clockwise, from top left, an infrared hot mirror filter, a polarising filter, and a UV filter. The larger filter is a polariser for Cokin style filter mounts. In photography and videography, a filter is a camera… …   Wikipedia

• Task lighting — Often task lighting refers to office task lighting, where the task light is used to increase illuminance on the reading area. However, the illuminance level is not the only factor governing visibility. Contrast (vision) too is important, and a… …   Wikipedia