基于多尺度特征相位相關(guān)的X線圖像拼接方法研究.pdf

1、中南大學(xué)碩士學(xué)位論文基于多尺度特征相位相關(guān)的X線圖像拼接方法研究姓名：羅香申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：生物醫(yī)學(xué)工程指導(dǎo)教師：鄧振生20090526AbstractTosolvetheproblemthatthesizeoftheparttobeexaminedlSmuchlargerthantheareaofdetectorofimaging(suchasthespineandtheentirelowerlimb，etc)，theparto

2、ftencanbedividedintoseveralsub—partstoimage，andthenmosaictheseimagesfromthosesub—partstogetheraccordingtocertainrules，tosatisfytheclinicaldiagnosisandthesurgeryplanningImagemosaictechniqueplaysanimportantroleinscoliosisa

3、ndlowerlimbdeformitiesandotherdiseasesPhasecorrelationiSsensitivetolightintensitySOanimagestitchingalgorithmbasedonmulti—scalephasecorrelationispresentedinthispaperwhichsolvesthesplicingproblemsoftheX—rayimageswhennoisea

4、ndintensityinhomogeneityexistFirstlytheimagetobestitchedistransformedtoroughscalespace，andprocessedusingcontourextractionSecondly，translationalparametersforinitialsplicingareacquiredwithphasecorrelation，whichwillbeusedto

5、determinethepotentialoverlappedregionsThenthetranslationalparametersareupdatedwithphasecorrelationinsmallscalespaceThirdlytheaffectionofthespliceisevaluatedusingthelocalmaximaofmultiplepulsefunctionsFinallythestitchingal

6、gorithmbasedonmultiresolutioniSusedtocompletetheprocessWhenusedtosplicestaticmosaicpanoramaimage，thealgorithmisprovedtobeeffectiveComparedwithclassicalphasecorrelation，thealgorithmintroducedinthispaperisindependentofscen