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The term "second-moment matrix" is a frequently used terminology in computer vision, because of an interpretation of the second-moment matrix in terms of second-order spectral moments of the Fourier spectrum. Formal statements about this can be found in the book by Lindeberg (1994) and the papers by Lindeberg and Garding (1996, 1997) cited among the references. [[User:Tpl|Tpl]] ([[User talk:Tpl|talk]]) 08:05, 21 August 2010 (UTC)
== The multi-scale structure tensor ==
Yesterday, I complemented this article with a description about the multi-scale structure tensor/second-moment matrix. I was, however, somewhat surprised by the way this text has been edited, with almost nothing left from the original text. In the revised article, there were also several statements that are incorrect and appear to be based on misunderstandings. Specifically, it appears as if the revisions were not based on an understanding of the cited references. In the current version, I have reformulated this section with specific emphasis on explaining aspects of this theory that may not have been fully explicit for the author of the revisions. Please, let me know if the current text is more self-contained.
When editing articles in Wikipedia it is good manners to keep important material from other authors and not to delete material from others without an understanding of the contents. [[User:Tpl|Tpl]] ([[User talk:Tpl|talk]]) 08:15, 21 August 2010 (UTC)
==References to specific pages in references==
When referencing material from a rather extensive book, I included specific page number to make it possible for others to find the specific statements that are relevant for this article. This text was, however, removed. Does anyone know about a better way of inserting explicit page and section references when referencing a book? [[User:Tpl|Tpl]] ([[User talk:Tpl|talk]]) 08:15, 21 August 2010 (UTC)
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