What is Artifact (error)?
In [[natural science]] and [[signal processing]], an '''artifact''' or '''artefact''' is any [[error]] in the [[perception]] or the way any information is represented or introduced by the equipment or technique(s).<ref>{{cite web|title=ARTEFACT {{!}} Definition of ARTEFACT by Oxford Dictionary on Lexico.com also meaning of ARTEFACT|url=https://www.lexico.com/definition/artefact|access-date=2021-05-06|website=Lexico Dictionaries {{!}} English|language=en|archive-date=2021-05-07|archive-url=https://web.archive.org/web/20210507122032/https://www.lexico.com/definition/artefact|url-status=dead}}</ref><ref>{{cite web|title=Definition of artifact {{!}} Dictionary.com|url=https://www.dictionary.com/browse/artifact|access-date=2021-05-06|website=www.dictionary.com|language=en}}</ref> ==Computer science== In [[computer science]], digital artifacts are abnormalities introduced into digital signals because of [[digital signal processing]]. ==Microscopy== In [[microscopy]], visual artifacts are sometimes introduced when processing samples into slide form. ==Remote sensing== ===Medical imaging=== In [[medical imaging]], artifacts are wrong representations of structure of [[tissues]]. They are made by imaging techniques such as [[ultrasound]], [[X-ray]], [[CT scanner|CT scan]], and [[magnetic resonance imaging]] (MRI). These artifacts may be caused because of the [[energy]]-tissue interaction between ultrasound and [[air]]. [[Physician]]s usually learn to recognize some of these artifacts to avoid mistaking them for actual [[pathology]]. ===Radar=== Radar [[Echolocation|echoes]] from something causes ghost images to appear. All those echoes must be filtered in order to get the where the object is, how fast it is going and the type of object it is. It may include [[aircraft]], and [[weather]]. == References == {{reflist}} [[Category:Medical imaging]] [[Category:Optics]] {{sci-stub}}