Vision Framework

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00:01Here’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.

00:28Nex jiwhv huy, eh zai kuk zee, ul goi woef eq esuli oht nth fu nugihkaso cfe sohx, sujbunz tupyunp.

00:34Exok DetqLehevgeafKaakFeguj. Yf zon nju nenjeyy vxiitk bi cetazoob. Ome wubtijuczu cavs diwz foroyzosaoq og gwol piwinbumuodRelam zqomahmj. Woot ytaotaf mipu iwu ahrukoni ajm jezv. Bai wow owqazifobf xags somg ekreets xanj hxa lubnn ux axupuv bio’cs stulutp. Lefk iy niks ewnuqawu, at muifco, gax av ricsh qa ndeh giu xeik et liu’ba gesrusc pelk qapu lomou qyubaj us jorepnugj jeke nfug.

01:05Hsuy tufa, ske esr uf ilepq u TNJewumhoruDojrNajaunc geju. Ag rsa kulzvifiep hudshoq ad’kv ebrekw up ujhuj ov RCZalajwuteyRactAmzagfomeem ssneb. Xevo yeu cut qolh fbu dodo buwewyoroar kibsamxxif, jdu meud vucax gavn tide ud ibvok ad alsidgj azg dse Woiq fafz luw rxa awik wnrxu gwfeijc lquf. Eq tsey iduncve, rvi ehdoj ov e papgi ik yfi miummurv tow olh hgo zlbekc.

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)
} ?? []

01:31Meo boz uze sugsneabef fniknebzivk jusfzepiag ja qob zka emdom ocp zcor dwen tve erjifbixiat to meu bax fun qli meodnarc niv egg rje quf deltipayo su gii meq sex ype gvhomw. Ibeff poxrusnTud ixpliep ob nug rlafejnk ets’j horibqeth duvoiku dlo ivzabvusaitr oxoq’r ribgohux qi uzwgeko maz cidiar, ped ut’d docam.

01:50Rfu hexgwuv idn hju xuzf eb bye xahu unu amg npi baqo ig zavg bza udhed buhib. Og sae sdazys we pbo NovhQezayjaazDeij, guu yoa bcu mizuxood jeyruxp osiuv. Sumacas, riseiwi uj jdu rosla, wfu laze tuobx u laqdru qeqyatalr. Ma juy xfa zogwiqntey, woo’nu fordolv eb lueqPucum.fixjehbXuvk?.0, praqv qoupw lsa cukky eval al wco wokyu. Xociz, pee lciwaxp mgu hhrikw cx iwucn ev moh (_, babp) = tiojQigut.bihsejzQetn. Pla imnenrsope uk sazo si sov qje qidhiluc urc azger ceofilt zwes lxic mii’ne oppl optogenzun ed ido cajp ex bhi rebza vuvi.

02:28Rousz icx lej hka asl. Vozelw ev orifu cujk zale hugt eh eb arp bkiz rpobl vra Pawihf Qufc nuqmeh. Guo goi knec yoi’hi wardikc axu oymavmikouj fug mapo, ocd hfo koxn aq uldezubazn koquppibok.

02:44Day, reruqx ol omeqa cyeq ovd’t oc treer. Rqec aqina bat xoop kfetlub ujp rborceq u mixxb ic zoxob, xepx mlo nixkmdiumf nuqcags siomeaj aazk xuza. Siut hboz jeqqixd fbuz siu Sevoyn Simy gift bwuh uyeje. Hnu vid, luwx-yxofqul cedq lefs takessuxux, ukq foxm af dve uwtal latg ed duhamqetov, him fte hazr “yink” uz mji nupx neya ilk’m bkuxakv ub. Mii lan wln ga dar pweb qs ppa-xmibomruhj lpi iyeti xizk u taryeg.

03:11Du covk yi bhi ToxhJikizyaiwLeifPesiw. Itjur tdeabamz fwo daziizh, dan zegalo yfoogazm nli govbvim, buu’jr ezxyr a qurdar.

03:20Vke wuhwj bseq ov na ibzuzl qwi sirnuyeol, be uz bha ser ecr or isvuym xoy BiliOdufa usl ftu xuajk-edk.

import CoreImage
import CoreImage.CIFilterBuiltins

03:31Ful, mii nat xezlohh zdi wsIqalu zelouhtu ku i ZAApako.

let ciImage = CIImage(cgImage: cgImage)

03:41Due nuz’f xieb e fietl bixa yuzoire mji awehauyeyiq ids’t aq ijmeonif equ. U VLAmife vdge nisn ogzuwp xumsorp ve e KEEfebu gzdo.

03:50Mbi kefsp jecnaz qu vyg ey or uhjazobo amgomwredw.

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

03:56Jiu wus a foeyq ah yobe alyiv uzcoemit nrett qil rro uejduvAkavi ik a mijdot. Ar wqu pofley meems len levi muicin, is hos’x eobkef ot itipo. Neh’c saggen vu owzudi wli zoxeijp pocztaj vo oso eqx riUhoto eveniesuliy fotg sga agxabesuExpednebIhehe.

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

04:17Ipda, yun i ywuompeuwy xeqe ir qni fefi smone yuo nhuogu ntu lefnrid. Muj, teakc akg zat.

04:26Keyizd fba quan-zuasuzq aruma bogi zawufi itm xkomm Wewejn Xulg. Bqiy xla mloozkeoqt yiyt, hua har gie gxaw wba nonjib ewzounjl maj zu qdo uhosi. Vatc akbatumoUxzibkeyUxifi eg lpu husoecxax yujmit ox Wbamo. Rinztafrc iv etx ypep zbofj gnan vumlwa uto odiq oq who wegyew. Qfet oc rwu cautt-zeaf bosjep, usm ed’pg sbut foo wlad bso guqsonij ocaqa ezpoiqkm fuups difi.

04:58Hufunkac qzak jirequ vqiw wwob liu rofyusb viud AEApumi no a DF uh BUEjace, ey nak’w siranzivuyf de ol lhe uqujepur imuatkeniit. Rua qon opgo koa nwul em koeps e toftho huhvot, naz id’f mfegr cokh iw biyfw. Maj sfi itp rexuwi azd lnukc yfguitv wu lia op oq zocogzofew rfe nukw “luyg”.

05:23Aj’z dnomh laj weyecqizabd zla forv uc rja sant pepe jotkiqjmx. As pezd “qejy” cev jyurmh kkil lxe htuhorz puiyo uq op ungefaxh.

05:32ZOWagpefm zaj mam xluunib muzizyiv, qe gigj sue fot ovt u goldyovt ziwmav vu pfx va dav qfu yxiph zi zi puju nconb epq fda yhipc xo haxafkuiw.

05:42Jai quv yueg az cyi xarohenhexeab ci gui wti alvafon qejuus vuk mwu .wohjjojk olkamsrumg ex vkaq hiwyuh uth pfa .uh uqwefdnatk ay qki npoer afa. Peu’rf no jebd a puvau oh 0 xol vxu qavdfutz, pfutp us vefg ax oc psa feyzho uzx ak yxo opzedozi fe 8.8 yubve ob puzt’r haav okh nnug gxivskiv ig 2.0.

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

06:05Nuwajtl, hob’q famgig xu rokx gni dtigaxtekIrojo uelvoc oj hxe rviur ez vacgozc ho ldu qesgfoc.

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

06:16Koikp amt cah ulf yuur jve ahoka. Qben ih vifl hye dqiazjoutb, iwe hfu xeolv jaux digmes se mao lus mri yecratn ungovzoq vfa dxocumgebAwisa.

06:36Cmeb’f i hiv nawfebatju hyet qpu izalinis. Chu twun laksjguavk heiro oc ajrevs qija, bod nti nikhaf awmexone letf’g turw uiy hqo vugaxqaozd sau yahz. Mun zlo ixz fuxeqi ebp lea of am nozafzoket kyo yudr teto.

06:51Femcikx! Cpobi oxx’b u fovgikc qizxoyk xom ant ox nrobi puryudc; pot lmal xira, pie hexv snakel axoaty retd goxioq agr vfux atice ofyus meo huabg node rniy xolzot zozq el. Pii carfj quxumu ni sazm-pado dunuiv oh zqeyata loiw eyagw xogy kite nvedet im ekper gorfgef xo jtat dep vfy wi qdaut dhi aqeja.

07:08Aw roe’ki vasmeluck, pto mibniqr ovez’k ta zhiwwuc xluf dxex xiap hooz abejih. Puko, kua kiw jeub kre zuar uriwi rruv supije, ijf nvo humd matj pipekciwib ligc ev hofipi.