Chapter 5_Segmentation

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1、Chapter5Segmentation5.1Activecontours.................................2375.1.1Snakes.................................2385.1.2DynamicsnakesandCONDENSATION................2435.1.3Scissors.................................2465.1.4LevelSets.......................

2、.........2485.1.5Application:Contourtrackingandrotoscoping............2495.2Splitandmerge.................................2505.2.1Watershed................................2515.2.2Regionsplitting(divisiveclustering)..................2515.2.3Regionmerging(aggl

3、omerativeclustering)..............2515.2.4Graph-basedsegmentation.......................2525.2.5Probabilisticaggregation........................2535.3Meanshiftandmodefinding..........................2545.3.1K-meansandmixturesofGaussians..................2565.

4、3.2Meanshift...............................2575.4Normalizedcuts.................................2605.5Graphcutsandenergy-basedmethods.....................2645.5.1Application:Medicalimagesegmentation...............2685.6Additionalreading......................

5、.........2685.7Exercises....................................270R.Szeliski,ComputerVision:AlgorithmsandApplications,TextsinComputerScience,235DOI10.1007/978-1-84882-935-0_5,©Springer-VerlagLondonLimited20112365Segmentation(a)(b)(c)(d)(e)(f)Figure5.1Somepopula

6、rimagesegmentationtechniques:(a)activecontours(IsardandBlake1998)c1998Springer;(b)levelsets(Cremers,Rousson,andDeriche2007)c2007Springer;(c)graph-basedmerging(FelzenszwalbandHuttenlocher2004b)c2004Springer;(d)meanshift(ComaniciuandMeer2002)c2002IEEE;(e)t

7、extureandinterveningcontour-basednormalizedcuts(Malik,Belongie,Leungetal.2001)c2001Springer;(f)binaryMRFsolvedusinggraphcuts(BoykovandFunka-Lea2006)c2006Springer.5.1Activecontours237Imagesegmentationisthetaskoffindinggroupsofpixelsthat“gotogether”.Instatist

8、ics,thisproblemisknownasclusteranalysisandisawidelystudiedareawithhundredsofdifferentalgorithms(JainandDubes1988;KaufmanandRousseeuw1990;Jain,Duin,andMao2000;Jain,Topchy,Lawetal.2004).Incomputer