基于機(jī)器視覺的蝦體位姿和特征點(diǎn)識(shí)別.pdf

1、浙江大學(xué)生物系統(tǒng)工程與食品科學(xué)學(xué)院碩士學(xué)位論文基于機(jī)器視覺的蝦體位姿和特征點(diǎn)識(shí)別姓名：林妙玲申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：農(nóng)業(yè)電氣化與自動(dòng)化指導(dǎo)教師：李建平20070601浙汀大學(xué)傾士學(xué)位鹼史ABSTRACTABSTRACTShrimpisoneofthemainproductsinwormaquaticproductvolumeoftradeshrimp’sprocessingincludespeeling，deheadgradeandpa

2、ckage卜，wadaystherealeshrimppeelingdevicesinmarketbuttheoperationofshrimpdeheadismostlydonebymanualworkIdentificationofshrimpheadhassignicificantmeaninginshrimpprocessingThispaperstodysshrimpimageprocessandshrimpheadident

3、ificationbyusingmachinevisionandwavelettransformIowpassfilteringTheresearchcontentandrusultsarcasfollowing：1Introducetheresearchandapplicationofshrimppeelinganddehead，especiallymachinevisionresearchsituationinaquaticprod

4、uctsuch∞shrimpcharacteristicrecognitiongradequalitydetectionandpackage2Stodyshrimpimagepretreatmethod，includingmedianfilteringiteratedthresholdsegmentation，morphoIogyopenandcloseoperationandcontourextraction～3Wavelettran

5、sformIowp∞sfilteringisusedtoanalyseimageoontourComparewithexperimentresultsitisfoundthatthreetimeswavelettransformIowp∞sfilteringisabletopreservedetailsofshrimpcontourwtliekeepingshrimpbasiccontourChaincodeisusedtepresen

6、tshrimpbackandabdomencurvethepointcoordinateswhichconnectheadandbodycallbeidentifiedbycalculatingthecoordinateswhichhasthemaximumchangeathorizontalandverticalorientationinchaincodeThecontentandresultsofwholerecognitionpr

7、ocessa∞shownbelow：nShrimpheadandtailpointsidentificationalgorithmisgiven2’Buildingandjudgmentof10shrimppostionmodelDifferentshrimppositionsaredividedaccordingtostraightlineslopeThestraightlineisformedbyheadandtailpointsi

8、nshrimpwaveletfilteringthinningimage3)IdentificationofbackandabdomenchaincodeAcertainalgorithmisproposedtoidentifybackandaMomon曲ajncodewhenknowingshrimpposition舢Identificationofshrimpheadandbodyconnectingpointsinchaincod

9、eStartsearchingalongchaincodefromshrimph‘a(chǎn)dpointinbackchaincodefindshrimpheadandbodyconnectingsegmemvectorbyu，ngspecificalgorithm51ResubshowthatcoordinatesellorofshrimpbackandabdomenconnectingpointsbasedollwaveletIowpass

10、filteringisabout353ramWhenthedistanceerrorunder4mm，theaccffracyoffirstfrozenandunfrozenshrimpidentifwationalgorithmis916％whilethefirstunfrozenshrimpis95％4Identificationmeathodofshrimpheadandbo由connectingpointswhenshrimps