Ääretuvastus: erinevus redaktsioonide vahel

Eemaldatud sisu Lisatud sisu
Meryli (arutelu | kaastöö)
PResümee puudub
30. rida:
: <math>f(x) = \frac{I_r - I_l}{2} \left( \operatorname{erf}\left(\frac{x}{\sqrt{2}\sigma}\right) + 1\right) + I_l.</math>
 
Sealjuures Gaussi kõvera parameeter <math>\sigma</math> peaks ideaalsetel oludel vastama keskmisele ääre hägususele, vältimaks täiendava ebatäpsuse teket, ent reaalselt pole tihti antud muutuja täpsus väga oluline, kuna tekkiv viga on marginaalne.<span class="cx-segment" data-segmentid="229"></span>
 
== Ääretuvastuse keerulisus ==
117. rida:
== Viited ==
{{viited|allikad=
<ref name="lin95">Lindeberg, Tony (2001), [http://www.encyclopediaofmath.org/index.php?title=Edge_detection "Edge detection"], in Hazewinkel, Michiel, Encyclopedia of Mathematics, [[Springer]], [[Rahvusvaheline raamatu standardnumber|ISBN]]&nbsp;978-1-55608-010-4</cite><cite class="citation" id="CITEREFLindeberg2001"><span class="Z3988" title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEdge+detection&rft.atitle=Edge+detection&rft.aufirst=Tony&rft.aulast=Lindeberg&rft.btitle=Encyclopedia+of+Mathematics&rft.date=2001&rft.genre=bookitem&rft_id=http%3A%2F%2Fwww.encyclopediaofmath.org%2Findex.php%3Ftitle%3DEdge_detection&rft.isbn=978-1-55608-010-4&rft.pub=Springer&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook">&nbsp;</span></ref>
<ref name="lin98">[http://www.nada.kth.se/cvap/abstracts/cvap191.html T. Lindeberg (1998) "Edge detection and ridge detection with automatic scale selection", International Journal of Computer Vision, 30, 2, pages 117–154.]</ref>
<ref name="JE8cQ">H.G. Barrow and J.M. Tenenbaum (1981) "Interpreting line drawings as three-dimensional surfaces", Artificial Intelligence, vol 17, issues 1–3, pages 75–116.</ref>