File:ID Verification.jpg
ID_Verification.jpg (250 × 339 pixels, file size: 66 KB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionID Verification.jpg |
These compressed iris images from the IREX I test illustrate why the JPEG format did not meet the test criteria. The JPEG 2000 format (top) retains its quality after compression for storage and transmission, while the JPEG format becomes pixelated when reduced the same amount. Credit: NIST Disclaimer: Any mention of commercial products within NIST web pages is for information only; it does not imply recommendation or endorsement by NIST. Use of NIST Information: These World Wide Web pages are provided as a public service by the National Institute of Standards and Technology (NIST). With the exception of material marked as copyrighted, information presented on these pages is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credits is requested. |
Date | |
Source | ID Verification |
Author | National Institute of Standards and Technology |
Licensing
[edit]Public domainPublic domainfalsefalse |
This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.
العربية ∙ English ∙ 日本語 ∙ македонски ∙ Nederlands ∙ +/− |
This image was originally posted to Flickr by National Institute of Standards and Technology at https://www.flickr.com/photos/63059536@N06/5884512782. It was reviewed on 29 August 2012 by FlickreviewR and was confirmed to be licensed under the terms of the United States Government Work. |
29 August 2012
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:35, 29 August 2012 | 250 × 339 (66 KB) | Stobkcuf (talk | contribs) | == {{int:filedesc}} == {{Information |Description=These compressed iris images from the IREX I test illustrate why the JPEG format did not meet the test criteria. The JPEG 2000 format (top) retains its quality after compression for storage and transmis... |
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File usage on Commons
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS3 Windows |
File change date and time | 11:19, 3 November 2009 |
Color space | sRGB |
Width | 269 px |
Height | 494 px |
Compression scheme | Uncompressed |
Pixel composition | RGB |
Number of components | 3 |
Image width | 250 px |
Image height | 339 px |
Bits per component |
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Date and time of digitizing | 06:19, 3 November 2009 |
Date metadata was last modified | 06:19, 3 November 2009 |