5841566252

Analiza wpływu stopnia kompresji. 155

HcCACAOBaHHH Gbl.TH OCHOBaHbl Ha aHa,TH3e TOHHOCTH aBTOMaTHHCC-khx H3MepeHHH Koop^HHaT MeroK. ABTOMaTHHecKoc H3McpeHHC TpeGyeT CXO^CTBa rTHKCe/lbHOH CTpyKTypbl (TCKCTypbl) BOKpyr H3MepaeMOH TOHKH H AByx cHHMKax, cocTaB^HfomHx crcpcorpaMMy. KoMnpeccmi JPEG HapymaeT

TCKCTypbl H 3THM CaMbIM HenOCpe^CTBCHHO BJlHJieT Ha TOHHOCTb H3MepeHRH KoopjjHHaT, a b KpaimeM caynae - npn cjihiukom GoabmoH KOMnpeccHH - ac-Jiacr HCB03M0>KHbIM H3MepCHHe 3THM MCTOAOM. CjlC^yiOIHCH UCJIbHD HCCAC-

^OBaHHH Gbiao onpeaeaeHHe tohhocth noayHaeMbix aBTOMaTHHecKHM mcto^om H3MepcHHH "least sąuares matching"(LSM).

B KaneCTBC Mtepbl TOHHOCTH H3MCpeHHH, BbinOnHCHHbIX rrpH H3MCHH-KDmCHCH CTCnCHH KOMnpCCCHH CHHMK3 H BCJ1HHHHC nHKCCJIK, npHHATO OLjeH-Ky TOHHOCTH B3aHMHOH OpHCHTHpOBKH CHHMKOB, COCTaBaJHOlIIHX CTepCO-rpaMMy aapocHHMKOB. BHyTpcHHJui h B3aHMHaa opneHTHpoBKH hbaaiotch HaHajIbHblMH HJMCpeHHHMH, a HX TOHHOCTb HMGGT OCHOBHOC BAHHHHe Ha TOHHOCTb (J)HHajTbHbIX npO-ayKTOB (J)OTOrpaMMCTpHHCCKOH TCXHOJTOrHH.

MaTepna.30M HecneAOBaHHfl Guam chhmkh, BbinoaHeHHbie KawiepoH BbicoKoro KanccTBa LMK 3 000 (JiupMbi Zeiss - HćpHoGeabie HcraTHBbi ro-Poackoh h npnropoAHOH MecTHocTH b MacuiTaGe 1:6 200. JXnu nccaeaoBa-hhh SbijiH B3»Tbi TpH CTepeorpaMMbi (6 chhmkob).

JJjisi żiaHHOH CTepeorpaMMbi, BeaHHHHbi nHKceaa h ko34hJ)huhcht KownpcccHH Gbiaa npoBeacHa B3aHMHaa opneHTHpoBKa. OpneHrapoBanne npoH3BOdHaocb Ha ochobc 20 H3MepeHHbix tohck, pacnoao>KeHHbix Ha no-BcpxnocTH bcch CTepeorpaMMbi, b BHae cctkh 4 Ha 5 tohck, hto oGecnenHBa ao BbicoKHH ypoBeHb CBcpx noao>KeHHOro koahhecTBa H3MepeHHH. H3Mepe-hhh npoH3BOAHaHCb Ha liHcJipoBOM aBTorpa<ł>e ImageStation 6487 HHTcpaK-THBHbiM cnocoGoM - onepaTop BbiGnpaa TOHKy pna H3MepeHHH Ha oaHOM CHHMKe, a TOHHoe nepeHeceHHe tohkh Ha apyron chhmok CTepeorpaMMbi

H3MCpCHHG KOOp^HHaT npOBOaHAOCb aBTOMaTHHCCKH MCTOaOM LSM.

BTopan nacTb nccaeaoBaHHK Kacaaacb bahlhhhb HarpoMo>KHCHHa nocaeacTBHH aerpaaaunn TeKCTypbi H3o6paa<eHHa npn nOBTOpHOH ero kom-npCCCHH. PCHb HiieT HMeHHO O TOM 3Tane TeXHOaOrHH, B KOTOpOM H3 CKaHH poBaHHbix h KOMnpeccHpoBaHHbix chhmkob oGpa3yioTC5i 3nHnOa«pHbie (HopMaaH3npoBaHHbie) H3oGpa>KeHHH 3tot 3Tan, Ha3biBaeMbiH CTepeo pe-ceMnaHHroM, 3aKaioHaeTCH b co3aaHHH CTepeocKonHHGCKHX HioGpaweHHH CTpOrO BCpTHKaabHbIX, AHUJCHHblX ^ecJlOpMaUHH, BbI3BaHHbIX aHCTOpcnefi H kphbh3hoh 3eMan, a TaioKC c ahhhmmh H3o6pa>KeHHH napaaaeabHbiMH K 6a 3Hcy CTepeorpaMMbi. 3nHnoanpHoe H3o6pajKeHHe Toa<e mokct GbiTb kom-npeccHpoBaHO MeroaoM JPEG - npnneM 3to MBaneTcn hobtophoh KOMnpec-chch H3o6pa>KeHHH, c nocaeacTBHCM HaKonaeHHH aerpaaauHH TeKCTypbi, hGo ero reoMCTpHA HBAHeTCH apyron, neM CKaHHpoBaHHoro CHHMKa. 3nn-noaapHbie H3oGpaa<eHHJi KaK ahckobmc ^anabi (MHOJKecTBa) BbiCTynaiOT b CHCTCMax HCCKoabKO cTapiHHx. B hobwx CHCTGMax anHnoanpHbie H3o6pa->kchh5I cymecTByioT anuib KaK BpeMeHHbie (jjanabi, GaaroaapH 6oabinoH

npOH3BOAHTC.lbHOCTH npOUeCCOpOB H3o6pa>KeHH>I, TaK HTO OTCyTCTByCT nOTpeGHOCTb HX KOMnpeCCHpOBaHHH.