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| {{for|the Italian city|Lenna, Italy}} | {{for|the Italian city|Lenna, Italy}} | ||
| ] famously used in many image processing experiments.]] | ] famously used in many image processing experiments.]] | ||
| '''Lenna''' or '''Lena''' is the name given to a ] originally cropped from a ''Playboy'' magazine ] picture of ], a Swedish model who posed naked for the November 1972 issue. The image is probably the most widely used test image for all sorts of ] ]s (such as ] and ]) and related scientific publications. | '''Lenna''' or '''Lena''' is the name given to a ] originally cropped from a ''Playboy'' magazine ] picture of ], a Swedish model who posed naked for the November 1972 issue. The image is probably the most widely used test image for all sorts of ] ]s (such as ] and ]) and related scientific publications. | ||
| The ] version "Lenna" of Söderberg's name comes from the ''Playboy'' article; ''Playboy'' changed the original "Lena" so English-speaking readers would pronounce her name correctly. | The ] version "Lenna" of Söderberg's name comes from the ''Playboy'' article; ''Playboy'' changed the original "Lena" so English-speaking readers would pronounce her name correctly. | ||
| ==History== | ==History== | ||
| ⚫ | In June or July of 1973 Alexander Sawchuk, at the time assistant professor of ] at the ] Signal and Image Processing Institute (SIPI), stated that he together with a graduate student and the SIPI lab manager were searching the lab for a good image to scan for a colleague's conference paper. They had tired of their stock of usual ]s and wanted something "glossy" to ensure a good output of ], and they wanted a human face. Just then, somebody happened to walk in with a issue of ''Playboy''.<ref name=JH>Jamie Hutchison, "Culture, Communication, and an Information Age Madonna," ''IEEE Personal Communication Society Newsletter'' Vol. 45, No. 3, May/June 2001, </ref> | ||
| ⚫ | The engineers removed the top third of the ] so they could wrap it around the drum of a ] ] ], which was outfitted with ]s (one each for the red, green, and blue channels) and a Hewlett Packard ] minicomputer. The image scanner had a fixed ] of 100 ] and the engineers wanted a 512 × 512 image. They limited the scan to the top 5.12 inches of the picture, which resulted in the image being ] at the subject's shoulders.<ref name=JH> | ||
| The picture's history was described in the May 2001 newsletter of the IEEE Professional Communication Society, in an article by Jamie Hutchinson:<ref name=JH>Jamie Hutchison, "Culture, Communication, and an Information Age Madonna," ''IEEE Personal Communication Society Newsletter'' Vol. 45, No. 3, May/June 2001, </ref> | |||
| ⚫ | |||
| ⚫ | The engineers |
||
| ⚫ | == Impact == | ||
| Lenna was not the first ''Playboy'' magazine image to be used to illustrate image processing algorithms. ] used a 1960 ''Playboy'' image, with permission and attribution, in his 1961 MIT master's thesis on image dithering.<ref>Lawrence G. Roberts, ''Picture Coding Using Pseudo-Random Noise'', ], S.M. thesis, 1961. </ref> | Lenna was not the first ''Playboy'' magazine image to be used to illustrate image processing algorithms. ] used a 1960 ''Playboy'' image, with permission and attribution, in his 1961 MIT master's thesis on image dithering.<ref>Lawrence G. Roberts, ''Picture Coding Using Pseudo-Random Noise'', ], S.M. thesis, 1961. </ref> | ||
| ⚫ | David C. Munson, editor-in-chief, January 1996 ] Transactions on Image Processing, cited two reasons for the popularity of the image in research: first, the image contains a nice mixture of detail, flat regions, ], and ]. This does a good job of testing various image processing algorithms. Second, that a picture of an attractive woman had an effect on the image processing research community which consisted mostly of men.<ref> David C. Munson, Jr., "A Note on Lena," ''IEEE Transactions on Image Processing'', Vol. 5, No. 1. Jan. 1996 </ref> | ||
| ⚫ | == Impact == | ||
| ⚫ | David C. Munson, editor-in-chief, January 1996 ] Transactions on Image Processing, cited two reasons for the popularity of the image in research:<ref> David C. Munson, Jr., "A Note on Lena," ''IEEE Transactions on Image Processing'', Vol. 5, No. 1. Jan. 1996 </ref> | ||
| {{cquote|First, the image contains a nice mixture of detail, flat regions, shading, and texture that do a good job of testing various image processing algorithms. It is a good test image! Second, the Lena image is a picture of an attractive woman. It is not surprising that the (mostly male) image processing research community gravitated toward an image that they found attractive.}} | |||
| Lenna is so widely accepted in the image processing community that Söderberg was a guest at the 50th annual Conference of the ] in 1997<ref></ref>. | Lenna is so widely accepted in the image processing community that Söderberg was a guest at the 50th annual Conference of the ] in 1997<ref></ref>. | ||
| === Controversy === | === Controversy === | ||
| The use of the image has produced some controversy, with some people concerned about its prurient content.{{cn}} Playboy at one time threatened to prosecute over the unauthorized use of the image, but decided to overlook the widespread distribution of this particular centerfold. The magazine has also stated that the issue was its best-selling ever, having sold 7,161,561 copies.<ref> retrieved January 14, 2006</ref> When the ] wanted to invite Lena to their meeting,<ref>Janelle Brown, "Playmate Meets Geeks Who Made Her a Net Star | |||
| The use of the image has produced some controversy, with some people concerned about its prurient content.{{cn}} | |||
| When the ] wanted to invite Lena to their meeting,<ref>Janelle Brown, "Playmate Meets Geeks Who Made Her a Net Star | |||
| ", ''Wired News'', May 20, 1997 </ref> | ", ''Wired News'', May 20, 1997 </ref> | ||
| {{cquote|''Playboy'' helped track down the Swedish native in Stockholm, where she helps handicapped people work on (non-networked) computers. Although ''Playboy'' is notorious for cracking down on illegal uses of its images, it has decided to overlook the widespread distribution of this particular centerfold. | |||
| Says Eileen Kent, VP of new media at ''Playboy'': "We decided we should exploit this, because it is a phenomenon."}} | |||
| Coincidentally, ''Playboy'' states the issue was its best-selling ever, having sold 7,161,561 copies.<ref>{{cite web | |||
| | url=http://www.thecoolhunter.net/profiles/PLAYBOY/ | |||
| | title = PLAYBOY - Live and breathe the business | |||
| | accessmonthday = 14 January | |||
| | accessyear = 2006 | |||
| | date = 26 May 2006 | |||
| | work = The Cool Hunter }}</ref> | |||
| ==References== | ==References== | ||
| ⚫ | <references/> | ||
| Other: | |||
| * | * | ||
| * {{cite book| last=Gonzalez| first=Rafael C.| coauthors=Richard E. Woods| title=Digital Image Processing| edition=2nd| isbn=0-20-118075-8}} — image used numerous times in chapter 6 | * {{cite book| last=Gonzalez| first=Rafael C.| coauthors=Richard E. Woods| title=Digital Image Processing| edition=2nd| isbn=0-20-118075-8}} — image used numerous times in chapter 6 | ||
| * http://www.ee.cityu.edu.hk/~lmpo/lenna/Lenna97.html | * http://www.ee.cityu.edu.hk/~lmpo/lenna/Lenna97.html | ||
| === Notes === | |||
| ⚫ | <references/> | ||
| ==See also== | ==See also== | ||
Revision as of 08:00, 15 January 2007
For the Italian city, see Lenna, Italy..png)
Lenna or Lena is the name given to a standard test image originally cropped from a Playboy magazine centerfold picture of Lena Söderberg, a Swedish model who posed naked for the November 1972 issue. The image is probably the most widely used test image for all sorts of image processing algorithms (such as compression and denoising) and related scientific publications. The anglicised version "Lenna" of Söderberg's name comes from the Playboy article; Playboy changed the original "Lena" so English-speaking readers would pronounce her name correctly.
History
In June or July of 1973 Alexander Sawchuk, at the time assistant professor of electrical engineering at the University of Southern California Signal and Image Processing Institute (SIPI), stated that he together with a graduate student and the SIPI lab manager were searching the lab for a good image to scan for a colleague's conference paper. They had tired of their stock of usual test images and wanted something "glossy" to ensure a good output of dynamic range, and they wanted a human face. Just then, somebody happened to walk in with a issue of Playboy.
The engineers removed the top third of the centerfold so they could wrap it around the drum of a Muirhead wirephoto scanner, which was outfitted with analog-to-digital converters (one each for the red, green, and blue channels) and a Hewlett Packard 2100 minicomputer. The image scanner had a fixed resolution of 100 lines per inch and the engineers wanted a 512 × 512 image. They limited the scan to the top 5.12 inches of the picture, which resulted in the image being cropped at the subject's shoulders.Cite error: A <ref> tag is missing the closing </ref> (see the help page).
David C. Munson, editor-in-chief, January 1996 IEEE Transactions on Image Processing, cited two reasons for the popularity of the image in research: first, the image contains a nice mixture of detail, flat regions, shading, and texture. This does a good job of testing various image processing algorithms. Second, that a picture of an attractive woman had an effect on the image processing research community which consisted mostly of men.
Lenna is so widely accepted in the image processing community that Söderberg was a guest at the 50th annual Conference of the Society for Imaging Science and Technology in 1997.
Controversy
The use of the image has produced some controversy, with some people concerned about its prurient content. Playboy at one time threatened to prosecute over the unauthorized use of the image, but decided to overlook the widespread distribution of this particular centerfold. The magazine has also stated that the issue was its best-selling ever, having sold 7,161,561 copies. When the IS&T wanted to invite Lena to their meeting,
References
- The comp.compression FAQ
- Gonzalez, Rafael C. Digital Image Processing (2nd ed.). ISBN 0-20-118075-8.
{{cite book}}: Unknown parameter|coauthors=ignored (|author=suggested) (help) — image used numerous times in chapter 6 - http://www.ee.cityu.edu.hk/~lmpo/lenna/Lenna97.html
Notes
- Jamie Hutchison, "Culture, Communication, and an Information Age Madonna," IEEE Personal Communication Society Newsletter Vol. 45, No. 3, May/June 2001, PDF
- David C. Munson, Jr., "A Note on Lena," IEEE Transactions on Image Processing, Vol. 5, No. 1. Jan. 1996 online
- Imaging Experts Meet Lenna in Person
- Playboy - Live and breathe the business retrieved January 14, 2006
- Janelle Brown, "Playmate Meets Geeks Who Made Her a Net Star ", Wired News, May 20, 1997 online