Changes

Noise is also present in images. Electronic noise will be present in [[camera]] sensors, and the [[physical]] size of the grains of [[film emulsion]] creates visual noise. This kind of noise is referred to as "grain."

Noise is also present in images. Electronic noise will be present in [[camera]] sensors, and the [[physical]] size of the grains of [[film emulsion]] creates visual noise. This kind of noise is referred to as "grain."

Noise is also used in the creation of 2D and 3D images by computer. Sometimes noise is added to images to hide the sudden [[transition]]s inherent in digital representation of [[color]], known as "banding." This adding of noise is referred to as "[[dithering]]." Sometimes noise is used to create the subject matter itself. Procedural noise (such as [http://en.wikipedia.org/wiki/Perlin_noise Perlin noise]) is often used to create natural-looking variation in computer generated images.

Noise is also used in the creation of 2D and 3D images by computer. Sometimes noise is added to images to hide the sudden [[transition]]s inherent in digital representation of [[color]], known as "banding." This adding of noise is referred to as "[[dithering]]." Sometimes noise is used to create the subject matter itself. Procedural noise (such as [https://en.wikipedia.org/wiki/Perlin_noise Perlin noise]) is often used to create natural-looking variation in computer generated images.

==Reference==

==Reference==

Kosko, Bart (2006). Noise. Viking Press. ISBN 0-670-03495-9.

Kosko, Bart (2006). Noise. Viking Press. ISBN 0-670-03495-9.

== External links ==

== External links ==

*[http://www.who.int/docstore/peh/noise/guidelines2.html Guidelines for Community Noise, World Health Organization, 1999]

*[https://www.who.int/docstore/peh/noise/guidelines2.html Guidelines for Community Noise, World Health Organization, 1999]

*[http://www.lindos.co.uk/cgi-bin/FlexiData.cgi?SOURCE=Articles Audio Measuring Articles - Electronics]

*[https://www.lindos.co.uk/cgi-bin/FlexiData.cgi?SOURCE=Articles Audio Measuring Articles - Electronics]

*[http://www.ieee.li/pdf/viewgraphs_mohr_noise.pdf Mohr on Receiver Noise: Characterization, Insights & Surprises]

*[https://www.ieee.li/pdf/viewgraphs_mohr_noise.pdf Mohr on Receiver Noise: Characterization, Insights & Surprises]

*[http://www.ieee.li/pdf/viewgraphs_noise.pdf Fundamentals of Electrical Noise]

*[https://www.ieee.li/pdf/viewgraphs_noise.pdf Fundamentals of Electrical Noise]

*[http://www.sengpielaudio.com/calculator-noise.htm Noise voltage - Calculation and Measuring of Thermal Noise]

*[https://www.sengpielaudio.com/calculator-noise.htm Noise voltage - Calculation and Measuring of Thermal Noise]

*[http://osha.europa.eu/topics/noise Noise at work] European Agency for Safety and Health at Work ([[EU-OSHA]])

*[https://osha.europa.eu/topics/noise Noise at work] European Agency for Safety and Health at Work ([[EU-OSHA]])

*[http://www.cdc.gov/niosh/topics/noise/ US National Institute for Occupational Safety and Health], - Noise

*[https://www.cdc.gov/niosh/topics/noise/ US National Institute for Occupational Safety and Health], - Noise

[[Category: Physics]]

[[Category: Physics]]