QRcode技術(shù)及其在農(nóng)產(chǎn)品可追溯物流中的應(yīng)用研究.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文QRcode技術(shù)及其在農(nóng)產(chǎn)品可追溯物流中的應(yīng)用研究姓名：高羽佳申請學(xué)位級別：碩士專業(yè)：計算機(jī)應(yīng)用指導(dǎo)教師：張旭東20090301StudyontheQRcodeTechnologyandtheApplicationofitsAgriculturalProductsTraceableLogisticsAbstractAsthemosteconomicalandpracticalautomaticidentifica

2、tiontechnologyuptonowbarcodetechnologywasproposedintheearly1970s，whichhasbeenwidelyusedinmanydifferentfieldsInordertosatisfytherequirementofexpressmgmoretypesandgreaterinformationcapacityinthelimitedarea，two’dimensionalb

3、arcodecameintobeing，whichcanmakeuptheinadequacyofone’dimensionbarcodeinexpressinginformationThestudyof2dimensionalbarcodeabroadwasfarearlierthanthedomesticone，sotheyhavepossessedmanvkindsofcodecoretechnologysuchasPDF417、

4、QRcode、Code49，etcOnthecontraryonlyfewdomesticcompanieshaveownedournationalintellectualpropertyrightsoftwo—dimensionalbarcodeThekeyanddifficultpartoftwodimensionalbarcodetechnologyisthedistinguishingofthebarcodeBecauseofi

5、tscharacteristicssuchasbigcapacityhighdensitystrongerrorcorrectingabilityandhighsecurityintensityitsdisguishingtechnologyismuchmorecomplicatedthanonedimensionbarcodeTherefore，theresearchontheencodinganddistinguishingtech

6、nologyisveryimportantteducetheapplicationcostoftwodimensionalbarcodeandtodevelopitswideapplicationinourCOuntrvAsonekindoftwodimensionalbarcodetechnologyQuickResponsecode(QRcode)showstheprosperousfutureduetoitsmeritssucha

7、sbiginformationcapacityquickreadingspeed，omnidirectionalreadingabilityandspecificdatacompresslonpatternonexpressingChinesecharactersandJapanesecharactersHavingchosentheQRcodeastheresearchobject，bytheanalysisofitssignstru

8、cture，thisthesisdiscussesindetailtheencodingrulesanderrorcorrectioncodingalgorithm，andrealizesQRcodeencodinganddecodingsoftware，andputsforwardeffectiveimage。preprocessinganddistinguishingalgorithmaccordingtothecharacteri

9、sticstheQRcodesignNowdays，facedwiththeincreasingqualityandsafetyproblemsofagriculturalproducts，effectiveapproachestocontrollingsuchproblemsbasedontraceablelogisticshavegainedwideattentionallovertheworldThethesispointsout