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1、浙江大學(xué)博士學(xué)位論文虛擬展示系統(tǒng)中關(guān)鍵技術(shù)的研究姓名：王鵬申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：計(jì)算機(jī)科學(xué)與技術(shù)指導(dǎo)教師：潘志庚;JohnXin20051201實(shí)驗(yàn)表明，本文的算法交互簡(jiǎn)單，模擬效果真實(shí)。因?yàn)楸舅惴ㄊ且环N基于圖像的方法，所以計(jì)算量和存儲(chǔ)量都很小，非常適合于網(wǎng)絡(luò)虛擬展示。在研究上述算法的基礎(chǔ)上，本文實(shí)現(xiàn)了兩個(gè)應(yīng)用系統(tǒng)。一個(gè)是PC平臺(tái)卜的紡織品虛擬展示系統(tǒng)：布藝設(shè)計(jì)大師，該系統(tǒng)的核心是色彩置換算法和基于區(qū)塊的紋理映射算法。同時(shí)系統(tǒng)也提供了信息管理，數(shù)據(jù)安全等模塊。另一個(gè)是移動(dòng)平臺(tái)上的個(gè)性展示系統(tǒng)：易秀，
2、該系統(tǒng)的核心模塊是色彩置換算法。易秀系統(tǒng)目前應(yīng)用在一款智能手機(jī)平臺(tái)上，實(shí)現(xiàn)了拍攝、處理、傳播一體化，具有極大的商_k價(jià)值。關(guān)鍵詞：虛擬展示，色感一致性，二色反射模型，中值偏移，反射分量分解，色彩置換，紋理映射，景深A(yù)bstractVirtualexhibitiontechnologyhasbecomeoneofthehotresearchtopicsinrecentyears，alongwiththebloomingofE—Commerce．Therealethreekeyproblemsinvirt
3、ualexhibitionsystem：howtoimprovetheexhibitioneffects，howtoreducethecomputationandstoragerequirementandhowtoprovidemoreconvenience．Someeffortshavebeenperformedontheseissuesinthisdissertation．Themaincontributionsofthisdissertationinclude：Anewcolorconstanc
4、yalgorithmfortmcalibratedimages：Theinflectionoftheincidentlighthastoberemovedduringthecourseofvirtualexhibition．TraditionalcolorconstancyalgorithmsCanonlyhandletheimageswhichintensitiesarelinearwiththescenereflectedilluminations．Thereforetheyarenotpract
5、ical．hlthisdissertation，weprovideanewcolorconstancyalgorithmwhichCanhandleuncalibratedimagesandisfleeofcameraandshotparameters．AnisotropicMeanShiftanalysisisemployedtoclustercolorsignalsformoneuniformlycoloredsurface．Theclusteringresultgivesthevariation
6、trendofchromaticity．Theestimationofthechromaticityoftheincidentlightiscalculatedonthechromaticityplane．Arobustframeworkisdesignedtodealwiththeimageshaveafewuniformlycoloredsurfaces．ExperimentsshowthatouralgorithmCangetagoodestimationandbeindependentonca
7、meraandshotparameters．Anewcolorsubstitutionalgorithmbasedonreflectingcomponentdecomposition：acolorsubstitutionalgorithmisneededwhenthematerialsofproductsarechangedinavirtualexhibitionsystem．Traditionalcolorsubstitutionalgorithmsjustkeepthebrightnessdist
8、ributionontheobjectareaunchanged．Thereforethesubstitutedresultisnotrealistic．Thealgorithmgiveninthisdissertationutilizesthephysicsreflectencemodel．ThereforeitCanprovidemorerealisticeffects，F(xiàn)irstweuseanovelprojectionmethodtodecomp
