World Library  
Flag as Inappropriate
Email this Article

Digital artifact

Article Id: WHEBN0002221235
Reproduction Date:

Title: Digital artifact  
Author: World Heritage Encyclopedia
Language: English
Subject: Visual artifact, Reverse Standards Conversion, Computer graphic artifacts, Glossary of video terms, Artifact (error)
Collection: Computer Graphic Artifacts, Digital Photography, Error, Information Science
Publisher: World Heritage Encyclopedia

Digital artifact

A complicated grid pattern is insufficiently processed by a smartphone camera.
Garbled processing by an HTC EVO.

A digital artifact is any undesired or unintended alteration in data introduced in a digital process by an involved technique and/or technology.

Possible causes

  • Hardware malfunction: In computer graphics, visual artifacts may be generated whenever a hardware component such as the processor, memory chip, cabling malfunctions, etc. causing data corruption. Malfunction may be caused by physical damage, overheating, insufficient voltage, and sometimes due to GPU overclocking, etc. Common types of hardware artifacts are texture corruption and T-vertices in 3D graphics, and pixelization in MPEG compressed video.
  • Software malfunction: Similarly to hardware malfunction, artifacts may be caused by software issues such as bugs in the algorithms, such as decoding/encoding introducing artifacts into audio or video, or a poor pseudo-random number generator would introduce artifacts distinguishable from the desired noise into statistical models.
  • Compression: Controlled amounts of unwanted information may be generated as a result of the use of lossy compression techniques. One of such cases are the artifacts seen in JPEG and MPEG compression algorithms. See compression artifacts.
  • Aliasing: Digital imprecision generated in the process of converting analog information into digital space due to the limited granularity of digital numbering space. In computer graphics, aliasing is seen as pixelation.
  • Rolling shutter, the line scanning of an object which is moving too fast for the CMOS camera to capture a unitary image.

External links

  • DPReview: Glossary: Artifacts

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.