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File:Singular value decomposition.gif

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Singular_value_decomposition.gif (400 × 330 pixels, file size: 107 KB, MIME type: image/gif, looped, 45 frames, 36 s)

Summary

Description
English: Visual representation of a singular value decomposition of a 2-dimensional, real shearing M. First, we see the unit disc in blue together with the two canonical unit vectors. We then see the action of M on the unit disc: it distorts the circle to an ellipse. The SVD decomposes M into three simple transformations: a rotation V*, a scaling Σ along the coordinate axes and a second rotation U. The SVD reveals the rotation of the ellipse with respect to the coordinate axes and the lengths σ1 resp. σ2 of the semi-major axis resp. semi-minor axis of the ellipse; they are just the singular values which occur as diagonal elements of the scaling Σ.
Date 08-09-2010
Source Own work
Author Lucas Vieira
Other versions Static version which inspired this animation and an extended version showing the effects of each column.

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Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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Date/TimeThumbnailDimensionsUserComment
current16:56, 17 September 2010Thumbnail for version as of 16:56, 17 September 2010400 × 330 (107 KB)LucasVBShorter version (no intermediate per-column transforms).
08:53, 8 September 2010Thumbnail for version as of 08:53, 8 September 2010400 × 330 (155 KB)LucasVB{{Information |Description={{en|1=Animation depicting the various transformations performed for each column of each matrix in the singular value decomposition.}} |Source={{own}} |Author=Kieff |Date=08-09-2010 |Permission= |other_versions=St

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