液體中小目標檢測算法研究及應用.pdf

1、浙江大學碩士學位論文液體中小目標檢測算法研究及應用姓名：成玉娟申請學位級別：碩士專業(yè)：測試計量技術及儀器指導教師：嚴惠民2002.2.1塑豎叁蘭竺：竺蘭垡堡苧；壘呈!!豎壘竺!ABSTRACTTargetsthataresmallerthan20pixelsarecalledsmalltargetThesmallspatialextendofthesetargetsprecludestheuseofinformationaboutsiz

2、e，shapeandotherfeaturesofatargetintraditionalimageprocessingtechniquesAlltheresearchworkconcerningsmalltargetdetectionarcbasedontwocharacteristicsofsmalltarget：thegraylevelofsmalltargetsaredifferentfromthatofbackground；t

3、hecontinuityoftargettrackDetectionandtrackingoflowobservablesmalltargetsfromasequenceofimagesagainststructuralbackgroundandnonstationaryclutterisailimportantresearchareainimageprocessingfieldApplicationsofthistechniquear

4、egenerallylimitedtoinfraredimages，especiallyinInfraredSearchandTrack(IRSl)surveillanceapplications，whichischaracteristicbylarge，lowfrequencyareasandmovingclutterThispaperdiscussedtheapplicationofsmalltargetdetectiontechn

5、iqueinindustryAseriesofnewalgorithmsfordetectingimpurity—onekindofsmalltargetinliquidbyanalyzingsequencesofgrayscaleimageswereproposed，whichareeffectiveforcomplexstructuredvisibleimagesBasedontheanalysisofexistingmethods

6、anddifferencesbetweenvisibleimagesandinfraredimages，thewholedetectionprocessisdividedintothreemainstages：imagepreprocessing，potentialtargetsextractionandtargettrackingEachofthemisexplainedindetailinthispaperandtheexperim

7、entalresultsarepresentedInthesecondstage，thosealgorithmsthatareeffectiveforliquidvisibleimagearediscussedandseveralnewmethodsofextractingfeaturesofsmalltargetsinvisibleimagesequencesareproposedAndperformancesofthosealgor