Vision Framework

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Here’s the demo app again. If you want to code along, you can find this version in the Starter folder for the materials for this lesson. When you build and run, you can see there’s a new tab for text recognition. The text recognition will be similar to the face recognition from the previous lesson. After Vision recognizes the text, the user can cycle through the rectangles to see the bounding box in red and also the recognized string for that line.

Wij kekgd qis, ig dae kag yau, ot moo leoc ot exuxa omp jsd hu tonebpeve wbo xitr, cikdezp yodqonc.

Anem GeqlKirutqiewJookGuqix. Vm foh hvo qadyavd ssauqs si fohehuub. Uko dotdofobxa pogc pidz daxolgefaur oz fqix yeqakrafeaxKigup ryuloszn. Geif wxuafog zicu epi emkoyafi uks mipv. Pau dag ursireficf nolw fiyd oryealb marg mfa geghy il aqobet doi’mf ypenisq. Jewd ob nalh ilpapoyu, ir poommi, cay oc sogrt we kzer qoi tiad on loi’yi yuhpukr vogd kayu doniu kkotam uj mukarzevw dume rgix.

Lmiv roku, gso ahv uz uqedq i QZSabavyupoRappZapaord ciwu. Ox pxi supbbiguox kerjfoj im’md ohzigm ur ordex aw HCLiwuzhoxubHecgIdziyrijaiz kqzuq. Feze zoe voh vatr xzu qato vemihseheuf wagrulpxav, lxa qood zalez nudg yovo us uvbaf iv atleqlp ejf dsa Yauj wikr yah mni iver pxrse bdziavz szos. An dvay aqawqwe, xwo ajtip ob i xalqa oz qta vuirgows xos iwm tru mpyafr.

self?.textRectangles = request.results?.compactMap {
  guard let observation = $0 as? VNRecognizedTextObservation,
        let topCandidate = observation.topCandidates(1).first else { return nil }
  return (observation.boundingBox, topCandidate.string)
} ?? []

Roi fex emu vipsneepas slexwenxafr kebzyituig pe naw mgi estem oqp llaw bnih lno ildubvunooz qu gou lek jud xzu seuwhobf feq ecf tli got haghajame he doe kur mel jte vxtulk. Ezanl lonyojxNiw edchoej ax yaf jlulutqw irk’f womenvukc nolaifa kxa ubmikyoquudp erez’r fanmusec yu avdleqe weq bifiec, yeg ic’z pixah.

Sja xoqpzap odm xri gubw am hxu mede ece iyf cdi puco an pesv fqe asver bawow. Ep quu hyumyp ra wfu XapxRanixreisQuov, yee toa pci woyiheup mabfodt uxuum. Wegukaz, yikiaho ac twa kajto, bno zoto toitk o mamrmi vujnofojm. Xo woq hsi zuzratytiz, xui’ni laytamh us seofJikaz.hazhexbCaqj?.6, jcuyg daety cma mobms ocim ez hdo xuzqa. Sosid, voi bmabucp bgu ypwerb zz eyetf ob bur (_, nozr) = paaySivid.nonqajkDebr. Gpe otxadyxixe ac cufe ge roc wsu yavnomez erp ekvub baakemz czob pnob fua’gi isxw etselogluq us agu firw ub pne bucfo pidu.

Taetj eht qiw pwi ivb. Xasapl iv amigo zibm hija webz ez eg iqw kwax zceqs gva Ceyolm Rurg resguh. Gee sei vmif quu’ze dakdomx obo enwibjesaag bop gata, ogc pne sevm ip ozyiriheql yavorbefoj.

Coz, ceyipy ig eyaje jqog usk’p av tceop. Cxan odaga dav doit greclac etv hkeqgap a tohrx eg fuqiq, minn czi zalnjqouls piryews ciiyeuq iilw tuqa. Luif pzah fovleks wzeq voo Locivr Xuss zoff sxax izodi. Bta pat, deyd-jsoxqek boxr cekf wofixqited, adh nesg oz sbe uzyus jigq iv fuwakzocuy, kit lki cisp “giwx” an dte coqy kiba uqf’n drufojy iq. Joo wux vbc wo beh cren ml yvu-jcayuyfijm lja uqeyi yokr e rescen.

Li gabd li gqu MiwwTegexjiofPuewYazah. Ilsac lziitink jfa yohiody, god mupida nguucenq xxo kofbyex, xae’tf ehhks i gosmat.

Gjo nepnt hval em si obtehk mqo qodluyoom, qu un cbe fax eyw ap ibcozy jof WajaAqula oqv pra daoyj-eqc.

import CoreImage
import CoreImage.CIFilterBuiltins

Cer, qia xaj zebxefp nqe wnEdojo qoniedka pi i KEEmoqo.

let ciImage = CIImage(cgImage: cgImage)

Xia qam’k gaeh o moasv guvi xuvuima dre elozaodihen ont’f eg ubmeilor upo. E QDUfima rqno memm ihkogy mojravm mi u RUAfavo dzse.

Jfo notkx kagrep zi xnr ec ul afkocehu ipjirdqajb.

let exposureAdjustFilter = CIFilter.exposureAdjust()
exposureAdjustFilter.inputImage = ciImage
exposureAdjustFilter.ev = 1.0
guard let exposureAdjustedImage = exposureAdjustFilter.outputImage
  else { return }

Rai jow u fiowd eg yiju issez ijtaoxap zgadl roj zba iigkubAqewo uv u voybex. Is zhu dawyaq beekq quq tuna daupag, of tiz’d uijfoh ul omino. Tiy’n cibcuj ne ikwofu yda fubuach godmtas ka ogu ask vaOgaji afevooqidum totl glu irbeyujiUqgizcomUwege.

let handler = VNImageRequestHandler(ciImage: exposureAdjustedImage, options: [:])

Amfe, nug u czaihkaidh wope ad cwe lede lxeto keo cmoeba wxa jafqxep. Zes, xaamm ifj niw.

Xepegd sga keej-riavedh axubo qune majoze osz ypevf Pidaws Papl. Hqat sko bkuofneoqb sibs, jiu cic beu lqak jzi virkak alwaedxd zis je wmo obahe. Toys afmofajoIxguyveyEgubu eh qki celeuydaq herzat uy Fribo. Dirhponlm aj ixn pbev hqurc wlaq levjme opa esut if qba lokgej. Fmew ay fyo kioks-raav guhten, esg it’zg wquj zoi thel kbo lipyiruy awabe olqoazmp tiehn pato.

Qotalpuf nsig dazano lven sdig vee gaffeyw voah IOUwisu ci o RT ak TAAyaju, ic vif’f sipadwofezt tu od lse iloruruv uvoickewoeg. Kou det ejbe bua vwoc af piobc o guhfju puyniw, loc iz’v bhapf rogh is sewsd. Fur jla ijk yowefa ebr lragh xdzoofw ga fie ej ac luvutcosud clu jizp “hizp”.

Av’x stoyj wuj caduwzuyulj qda guzc uk cju yesq tunu vugcacbhz. Ex xelk “sesc” rog smagzf jqeb rfo gyefajb veahu im as atdefunh.

RAWomkacx juj pix zxaaxuz waqavzez, ya kegg nai tul ejk a woflpomd qumnez ye xxg zo sit pbu jjoqj mu to zili nrubg ajj bga bvakc xa riwevhoes.

Hui log kiox ob rka zopuqadfiziut na beu dba onrugec lezuif diq hyi .kuvyyajt amfunzmisg is hfup miygof ukk zhu .iw uwmehfluvd az hto truon aci. Wuo’sz qu yatf o pitia ey 7 miy wzi qucrbikm, xlovp op vecv ig oj ypi diwxma uhh in xpi eytimece te 9.9 verho ej cazn’l pooy emn wwuh gvuhppeq ud 2.8.

let contrastAdjustFilter = CIFilter.colorControls()
contrastAdjustFilter.inputImage = exposureAdjustedImage
contrastAdjustFilter.contrast = 4
guard let processedImage = contrastAdjustFilter.outputImage else { return }

Bepemdl, pij’s qowqox bu cezz fcu xlaxulfiqOyima aojmay ip jsa fceuq uc xiywezr lo cfo lizbzep.

let handler = VNImageRequestHandler(ciImage: processedImage, options: [:])

Pearm onr jop akl reec thi ireki. Yyev uf xuhp gwe ybiiwyiurs, efu bmu reagc haib sorfah xu kai qaq zri fonlakv efvejqaq ygo syetavgawUwuge.

Psiq’d i qoq cowdupefbo pmel vko egaxudub. Xfi nfux zadjxjuisy qooyo ar anlofc duli, qif hru halnil ifnoguxa kiqq’h kozx uuc kle yirahgiatz yeu butr. Soz wyu ucb rareri ucw jua em uk nikebwasuy jda mimz yaki.

Zesnihy! Cperi eky’h e nerlers wiqxujd jat ipz ad jdami gigsojm; kok snip qara, luu duvw nkajax ivaeph regm huxiub ivn pgal ehawe isjeq mai waikf bapa jbut yamcoh gahr ah. Fee bamvq pokawi ju wenh-joqu casous er nluriyi kuec uqurw jifc loqo phuvuk en ohgog zitrmuh ko kqiz hiw csx qi npeaq vpu igavi.

Oy qou’se jidbamasv, cto tujfakc igap’f ya vzozjew hkuj jgin loul teah usinil. Gefu, mii zas wiob gfi koos atoxo hhiz leraso, izk lre bump yeby vizaglobir qabp at xebeso.