Image processor: Difference between revisions

Revision as of 22:09, 16 March 2020

Revision as of 13:29, 12 November 2020

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[[Image:Nikon Expeed.jpg|thumb|right|[[EXPEED|Nikon EXPEED]], a [[system on a chip]] including an [[Color image pipeline|image processor]], [[Video_scaler#Video_processor|video processor]], [[digital signal processor]] (DSP) and a [[32-bit]] [[microcontroller]] controlling the chip]]

An '''image processor''', also known as an '''image processing engine''', '''image processing unit''' ('''IPU'''), or '''image signal processor''' ('''ISP)'''), is a type of [[media processor]] or specialized [[digital signal processor]] (DSP) used for [[image processing]], in [[digital camera]]s or other devices.<ref>[http://www.robots.ox.ac.uk/~sjrob/Teaching/B4_SP/b4_sp.pdf DIGITAL SIGNAL & IMAGE PROCESSING]</ref><ref>[http://homepages.inf.ed.ac.uk/rbf/BOOKS/VERNON/Chap004.pdf Fundamentals of digital image processing]</ref>

Image processors often employ [[parallel computing]] even with [[SIMD]] or [[MIMD]] technologies to increase speed and efficiency. The [[digital image]] processing engine can perform a range of tasks.

To increase the system integration on embedded devices, often it is a [[system on a chip]] with [[multi-core processor]] architecture.

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=== Speed ===

With the ever-higher pixel count in image sensors, the image processor's speed becomes more critical: photographers don't want to wait for the camera's image processor to complete its job before they can carry on shooting - they don't even want to notice some processing is going on inside the camera. Therefore, image processors must be optimised to cope with more data in the same or even a shorter period of time.

==References==

{{reflist}}

== See also ==

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*[[Digital image editing]]

*[[Demosaicing]]

==References==

{{reflist}}

[[Category:Digital signal processors]]