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82 个结果
  • 简介:Wepresentanapproachforgeneratingasortoffractalgraphsbyasimpleprobabilisticlogicneuronnetworkandshowthatthegraphscanberepresentedbyasetofcompressedcodings.Analgorithmforquicklyfindingthecodings,i.e.,recognizingthecorrespondinggraphs,isgiven.Thecodingsareshowntobeoptimal.Theresultsabovepossiblygiveustheclueforstudyingimagecompressionandpatternrecognition.

  • 标签: 分维图形 人工神经网络 压缩编码 图像处理
  • 简介:Thispaperpresentssomeresultsoftherelationbetweenwavelettransformandfractaltransform.Thewavelettransformoftheattractoroffractaltransformpossesestranslationalandscaleinvariance.Sowespeedthefractalimageencodingbytestingtheinvarianceofthewavelettransformappropriateforimageencoding.Theclassficationschemeofrangeblocksbywavelettransformisgiveninthispaper.

  • 标签: FRACTAL TRANSFORM WAVELET TRANSFORM CLASSIFICATION scheme.
  • 简介:Anexperimentonwooddryingatdifferenttemperatureswasconductedtoshowthefractalnatureoftheporespacewithinwood.Cubicblocksmadefromginkgo(Ginkgobiloba)andChinesechestnut(Castaneamollissima)woodwereused.Samplesweredriedinovenatthetemperatureof20,40,60and100℃,respectively.Allthedryingprocedureslastedfourhours.Themasswasweighedandthedimensionsweremeasuredimmediatelyforeachsamplewheneveryprocedureofdryingended.Thefractaldimensionsof...

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  • 简介:Avolume-basedmethodformeasuringparticle-sizedistribution(PSD)fractaldimensionsofporousmediumswasdevelopedbyemployinglasersize-analyzingtechnology.ComparedwithconventionalapproachesofusinghydrometerorscreentodeterminePSD,thismethodcanavoidcalculationerrorsandmeasuresmallersize-scaleporousmedium.Inthispapertheexperimentalporousmediumswerebrownsoil,kaolinandsandsoil.Amicro-orderofmagnitude(10^-5m)inparticle-sizeintervalcouldbeshowninPSDresultsofbrownsoilandkaolin.Theexperimentsindicatedthatbrownsoilhadanearlymono-fractalPSDcharacter,whilekaolinandsandsoilshowedmulti-fractalPSDcharacters.Bytheadsorptionisothermexperiments,thePSDfractaldimensionsofthesandsoilwerealsofoundtokeepalinearlyincreasingrelationwiththelinearadsorptiveparametersofthesoilsindifferentintervalstoadsorbbenzenefromaqueoussolution.

  • 标签: 多孔介质 粒度分布 分形维数 吸附性能
  • 简介:在这份报纸,我们首先在帖子上描绘分数维的插值函数(FIF)的有限批评有限自我类似的集合。然后,我们在Sierpinski垫板(SG)上与一致垂直可伸缩因素学习FIF的拉普拉斯算符。作为应用,我们证明SG上的下列Dirichlet问题的答案是有一致垂直可伸缩因素1/5的FIF:u=0在SG上{q1,q2,q3},和u(qi)=i,i=1,2,3qi,i=1,2,3,是SG的边界点。

  • 标签: Dirichlet 问题 分数维的插值功能 Sierpinski 垫板 精力 拉普拉斯算符
  • 简介:Someshortcomingsofcommonfractalimagecodingmethodsarestudied,thentheyarecorrectedwithanewmethod.ThenewmethodisimprovedfurtherinDCTdomain.Codingresultsshowtheadvantageofthenewmethod.

  • 标签: FRACTAL Image CODING ITERATIVE FUNCTION SYSTEM
  • 简介:Anewblock-basedfractalimagecodingalgorithmcalledFractalBlockCodinginResidueDomain(FBCRD)isproposed.InbasicFractalBlockCoding(FBC)algorithm,eachblock(calledrangeblock)isencodedbyanaffinemappingfromadomainblockwithinthesameimagetoitself.Thedecoderusestheparametersofthesemappingstosynthesizethereconstructedimagethroughaniterativeprocedure.FBCRDisamodificationofbasicFBC.InFBCRD,rangeblocksanddomainblocksareallresidueblockssubtractedfromtheirblockmeansandboththeparametersofaffinemappingsandblockmeansarecoded.Thismodificationleadstofeweriterationsatthedecoder.AnoptimizeddecodingstrategyisalsointroducedwhichreducestotaldecodingtimebymorethanhalfofthatofbasicFBC.Thisimprovementisfavorableforrealtimeimplementationoffractalimagecompression.

  • 标签: Image CODING FRACTAL DECODER ITERATION FRACTAL
  • 简介:-Thispaperdiscussestheapplicationoffractaldimensionandfractalsinoceanengineering.Tohandlesomeoceanenvironmentproblems,theexistingfractalmethod,inwhichthefractaldimensionisaconstant,canbeused.Forsomecomplicatedproblemsinoceanengineering,thispaperpresentstheconceptofthevariabledimensionfractals(D=f(r)),i.e.,thefractaldimensionDisthefunctionofcharacteristicscalerinsteadofaconstant.Byusingvariabledimensionfractals,severaldeformationandstressstatesofoffshorestructuresaredescribed.

  • 标签: FACIAL DIMENSION facials VARIABLE DIMENSION facials
  • 简介:平行的Liesegang模式猛抛当包含的答案一同沉淀时,乐队们被获得在一个1D胶化矩阵的离子interdiffuse。形成的节俭地可溶的盐,显示磁盘的美丽的层化猛抛对1D试管轴垂直。Liesegang结构从他们的分数维的性质的观点被分析。几何Liesegang模式与象时间,乐队间距和乐队宽度法律那样的著名实验法律在一致被构造。扩散的起始的集中上的乐队间距的依赖(外部)并且不动(内部)电解质(一0并且B0,分别地)被拿跟随Matalon-Packter法律。数学分数维的尺寸和盒子计数尺寸是计算的。分数维的尺寸被发现与增加A增加0并且减少的B0。我们也与雏晶的随机的分发分析马赛克模式,在他们的分数维的性质上比古典Liesegang胶化方法,和报告在不同条件下面成长。最后,乐队在多重谱线被组织的复杂Liesegang模式被学习,并且分数维的性质与复合增加,这被显示出。

  • 标签: 沉淀 分形结构 Liesegang环 艺术 分形性质 凝胶基质
  • 简介:Anovelparadigmforfractalcodingselectivelycorrectsthefractalcodeforselecteddomainblockswithanimage-adaptiveVQcodebook.Thecodebookisgeneratedfromtheinitialuncorrectedfractalcodeandis,therefore,availableatthedecoder.Anefficienttrade-offisgeneratedbetweenincrementalperformanceandbitrate.

  • 标签: 分形图像编码 矢量量子化 交互函数
  • 简介:Inthispaper,weconstructaclassofnowheredifferentiablecontinuousfunctionsbymeansoftheCantorseriesexpressionofrealnumbers.Theconstructedfunctionsincludesomeknownnondifferentiablefunctions,suchasBushtypefunctions.Thesefunctionsarefractalfunctionssincetheirgraphsareingeneralfractalsets.Undercertainconditions,weinvestigatethefractaldimensionsofthegraphsofthesefunctions,computetheprecisevaluesofBoxandPackingdimensions,andevaluatetheHausdorffdimension.Meanwhile,theHoldercontinuityofsuchfunctionsisalsodiscussed.

  • 标签: CANTOR series expression DYADIC NONDIFFERENTIABLE FRACTAL
  • 简介:XinjiangfolkartpatternsanddesignsarethearttreasuresofChineseculturaltreasure-houseaswellastheprecioushumanisticresourcesofWesternChina.Intheprocessofcollecting,sortingoutandstudyingXinjiangfolkartpatterns,theelegantsimplicityaswellasthegoodtastestandsoutimpressively,andthepatternshapeaswellasthelayoutcompositionshowsadistinctivenationaltraitandastronglocalcolor.As'TheGeometryofNature',fractalgeometrybringsaboutanewperformingmethod.Variousfractalgraphsarecreatedbydifferentgenerators.TheirdynamicpicturescontainvisualinformationofgreatmagnitudeandtheirartisticeffectissimilartoXinjiangfolkartpatterns,whichfullyprovesthefractalbeautyinXinjiangfolkartpatterns.更多还原

  • 标签: 艺术图案 分形几何 民间 新疆 艺术珍品 中国文化
  • 简介:ThesufficientconditionsofHoldercontinuityoftwokindsoffractalinterpolationfunctionsdefinedbyIFS(IteratedFunctionSystem)wereobtained.Thesufficientandnecessaryconditionforitsdifferentiabilitywasproved.ItsderivativewasafractalinterpolationfunctiongeneratedbytheassociatedIFS,ifitisdifferentiable.

  • 标签: FRACTAL INTERPOLATION function HOLDER CONTINUITY DIFFERENTIABILITY