# Just saying

**URL:** <https://www.ruby-forum.com/t/just-saying/88025>\
**Category:** Ruby\
**Created:** [March 7, 2007, 5:08pm UTC](https://www.ruby-forum.com/t/just-saying/88025 "2007-03-07T17:08:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Martin\_DeMello](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/f17d59/32.png) [@Martin\_DeMello](https://www.ruby-forum.com/u/Martin_DeMello)\
**Post date:** [March 7, 2007, 5:08pm UTC](https://www.ruby-forum.com/t/just-saying/88025/1 "2007-03-07T17:08:03Z")

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> **[Eigenface](https://en.wikipedia.org/wiki/Eigenface)**
>
> An eigenface (/ˈaɪɡənˌfeɪs/) is the name given to a set of eigenvectors when used in the computer vision problem of human face recognition. The approach of using eigenfaces for recognition was developed by Sirovich and Kirby and used by Matthew Turk and Alex Pentland in face classification. The eigenvectors are derived from the covariance matrix of the probability distribution over the high-dimensional vector space of face images. The eigenfaces themselves form a basis set of all images The eige...

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**Author:** ![Martin\_DeMello](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/f17d59/32.png) [@Martin\_DeMello](https://www.ruby-forum.com/u/Martin_DeMello)\
**Post date:** [March 8, 2007, 7:31am UTC](https://www.ruby-forum.com/t/just-saying/88025/2 "2007-03-08T07:31:05Z")

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On Thu, Mar 08, 2007 at 01:06:55AM +0900, Martin DeMello wrote:

> [Eigenface - Wikipedia](http://en.wikipedia.org/wiki/Eigenface)

Excellent . . . !