Yuav ua li cas paub yog tias ib daim duab tau photoshopped

2024 Tus sau: Malcolm Clapton | [email protected]. Kawg hloov kho: 2023-12-17 03:58

Kev soj ntsuam, kev xav zoo thiab ob peb yam kev pabcuam tshwj xeeb yuav pab koj.

Yog tias koj xav tias daim duab nyob rau hauv pem hauv ntej ntawm koj tau raug kho, sim cov txheej txheem muab - los ntawm yooj yim mus rau complex.

Thov nco ntsoov tias tsis muaj ib qho loj-haum-txhua txoj hauv kev los qhia txog kev yees duab los ntawm kev txhaj tshuaj tiag tiag. Ib tus neeg siv khoom yees duab paub txog tuaj yeem hla txhua txoj hauv kev thiab ua rau qhov cuav zoo li qhov tseeb. Tsis tas li ntawd, feem ntau cov duab toads tuaj hla koj ob lub qhov muag tom qab lawv tau txais kev cawmdim thiab txiav tawm ntau zaus, thiab nws nyuaj dua kom paub txog kev dag ntxias hauv daim duab zoo li no.

Tshawb xyuas daim duab

Ua tib zoo mloog cov ntsiab lus hauv qab no.

1. Daim duab tsis muaj tseeb

Cov cuav cuav feem ntau tuaj yeem paub qhov txawv yam tsis muaj cov cuab yeej - kev soj ntsuam txaus. Cia li saib daim duab tag nrho. Yog tias nws yog ib pawg neeg, suav pes tsawg caj npab thiab txhais ceg lawv muaj thiab xyuas kom tag nrho cov ceg tawv muaj tus tswv.

Kwv yees qhov feem ntawm lub cev thiab lub taub hau ntawm cov neeg hauv daim duab: feem ntau inexperienced fotogabers ntxig rau lwm tus neeg lub ntsej muag rau hauv cov duab heev carelessly.

2. Deformed keeb kwm yav dhau

Thaum tus kws yees duab pib hloov cov duab thiab qhov loj ntawm ib qho khoom hauv daim duab, qhov kev sib txawv tuaj yeem cuam tshuam rau keeb kwm yav dhau. Piv txwv li, qee tus txiv neej hauv daim duab no nce lawv cov leeg, thaum cov poj niam nce lawv lub mis thiab lub duav.

Txawm li cas los xij, yog tias muaj cov kab ncaj nraim, phab ntsa, qhov rooj ntawm ib sab ntawm cov khoom raug hloov, ces lawv kuj feem ntau deformed. Thiab tam sim ntawd nws catches lub qhov muag. Piv txwv li, ntawm no yog tag nrho cov duab ntawm cov neeg ncaws pob no: cov txiv neej no txaus ntshai heev.

3. Tsis muaj pores thiab wrinkles ntawm lub ntsej muag

Txawm tias cov tawv nqaij zoo tshaj plaws ntawm kev soj ntsuam ze dua tsis yog txhua tus du: nws muaj wrinkles, moles, pores thiab blemishes. Yog li ntawd, yog hais tias lub ntsej muag nyob rau hauv daim duab zoo li lub ntsej muag ntawm ib tug porcelain menyuam roj hmab los yog ib tug qauv ntawm ib tug video game, qhov no yog ib tug montage.

4. Cov cim ntawm cloning hauv daim duab

Txoj hauv kev yooj yim tshaj plaws los tshem tawm ib yam dab tsi los ntawm daim duab yog siv Clone Stamp feature hauv Photoshop lossis lwm yam duab editor. Cov cuab yeej luam tawm thaj chaw ntawm daim duab uas nyob ze rau thaj chaw ua tiav thiab siv lawv los plam cov khoom tsis xav tau.

Cov kws tshaj lij photoshoppers tsim txom cov haujlwm no, vim tias cov khoom zoo ib yam tshwm sim hauv daim duab, uas yog qhov txaus ntshai.

5. Teeb meem ntawm qhov ntxoov ntxoo thiab teeb

Ua tib zoo saib lub teeb thiab duab ntxoov ntxoo. Xyuas kom tseeb tias tag nrho cov khoom yog nrum duab ntxoov ntxoo nyob rau hauv txoj cai. Saib seb, ntawm qhov tsis sib xws, muaj cov duab ntxoov ntxoo uas tsis muaj neeg saib hauv daim duab. Thiab yog tias muaj, nws txhais tau hais tias qee yam khoom raug tshem tawm ntawm daim duab, tab sis tus retoucher tsis nco qab txog tus duab ntxoov ntxoo.

Kuj xyuas lub teeb. Yog tias ob tus neeg lossis cov khoom hauv daim duab tau teeb sib txawv, zoo li txhua tus muaj nws tus kheej lub teeb, ces daim duab tau raug kho.

Saib daim duab qub

Tsuas yog upload cov duab rau hauv lub tshuab tshawb nrhiav thiab sim nrhiav cov duab zoo sib xws. Yog tias koj daim duab yog photoshopped, muaj feem yuav yog tias koj yuav tuaj yeem nrhiav qhov qub thiab pom dab tsi raws nraim tau retouched.

Tsis tas li ntawd, nws tseem ceeb heev kom saib cov hnub ntawm cov duab ntawm lub vev xaib - qhov no kuj tuaj yeem pom siv cov tshuab tshawb nrhiav. Yog tias koj pom cov duab thaij duab los ntawm qhov chaw ntawm qhov xwm txheej tsis ntev los no, tab sis muaj cov duab zoo ib yam hnub tim lub hli dhau los, nws pom tseeb tias lawv tab tom sim dag koj.

Koj tuaj yeem siv Google, Yandex lossis lub tshuab tshawb nrhiav tshwj xeeb TinEye. Thiab nws yog qhov zoo dua los saib ob qho tib si muaj thiab muaj - rau kev ntseeg siab.

• Google Duab Nrhiav →
• Nrhiav cov duab hauv Yandex →
• Nrhiav los ntawm daim duab hauv TinEye →

Saib cov duab metadata

Qhov no yog ib qho yooj yim heev, txawm tias tsis yog txoj kev ntseeg siab tshaj plaws. Qhib EXIF metadata ntawm koj cov duab thiab saib nws. Koj tuaj yeem ua qhov no hauv cov ntaub ntawv cov khoom: right-click rau nws hauv Windows Explorer lossis Finder hauv macOS.

Yog tias koj muaj hmoo, koj tuaj yeem pom lub koob yees duab qauv, hnub tim ntawm daim duab, thiab hnub uas cov duab raug kho. Muaj kev ntseeg siab me ntsis hauv cov duab uas tau sau rau hauv cov teb nrog lub koob yees duab qauv thiab lub sijhawm tua.

Thaum cov duab raug kho hauv Photoshop lossis lwm tus editor, daim ntawv thov tuaj yeem khaws cov ntaub ntawv hais txog nws cov version thiab cov kev khiav hauj lwm qhov system uas qhov retouching tau ua hauv cov duab metadata.

Txawm li cas los xij, txoj kev no koj tsuas tuaj yeem ntes tus neeg tsis paub qab hau retoucher, vim EXIF cov ntaub ntawv yooj yim los hloov. Tsis tas li ntawd, yog tias tus kws yees duab tsuas tweaked qhov ci, xim thiab qhov sib piv, tab sis tsis hloov lwm yam, cov metadata tseem yuav qhia tau tias cov duab tau photoshopped.

Ua kom kho xim

Qee cov fakes tsis tau ua kom crudely tias koj tuaj yeem paub lawv nrog qhov muag liab qab. Thiab nyob rau hauv cov ntaub ntawv no, txhua tus duab editor lossis cov duab saib uas tso cai rau koj los kho cov xim yuav tuaj yeem pab koj.

Hauv Windows, koj tuaj yeem siv FastStone Image Viewer los tshawb txog cov duab. Qhib cov duab hauv nws thiab nyem "Colors" → "Color Correction".

Ntawm macOS, tus tsim-hauv Viewer. Nyem Cov cuab yeej → Kho xim….

Ua si nrog cov sliders thiab koj yuav pom qee cov ntsiab lus hauv daim duab uas tsis pom meej tam sim ntawd.

• Tweak lub brightness thiab sib piv. Cov chaw tsaus ua kom ci dua thiab qhov chaw ci ntsa iab tsaus dua. Qhov no yuav tso cai rau koj pom cov khoom qub thiab cov khoom sib txuas hauv daim duab.
• Nce qib saturation. Yog li, ib yam nkaus, koj tuaj yeem pom hauv daim duab ciam teb ntawm gluing ntawm ib sab ntawm cov khoom ntxiv nrog kev pab ntawm montage.
• Ua kom lub ntse ntse. Koj tuaj yeem pom qhov koj tab tom sim nkaum nrog lub cuab yeej Blur hauv qhov chaw tsis pom kev.
• Them cov xim. Hauv FastStone Duab Saib, nyem Xim → Tsis zoo. Hauv macOS Saib Ua Ntej, siv Cov Cuab Yeej → Kho Xim … thiab luag cov sliders ntawm lub histogram kom sab xis yog sab laug thiab sab laug yog sab xis. Inverting cov xim nyob rau hauv daim duab yuav pab koj pom qhov muag plooj tsis pom zoo tom qab.

Txheeb xyuas lub suab nrov hauv koj daim duab

Qhov no yog ib txoj kev nyuaj dua. Nws tsis zoo li tias tus neeg pib tshiab yuav tuaj yeem paub txog thawj zaug qhov tsis zoo ntawm lub suab nrov hauv daim duab, tab sis nws tsim nyog sim.

Cov duab tiag tiag, vim qhov tsis zoo ntawm cov khoom siv yees duab, ib txwm muaj suab nrov nrov. Graphic editors xyaum tsis tsim nws. Yog li, los ntawm kev tshuaj xyuas lub suab nrov hauv daim duab, koj tuaj yeem txheeb xyuas cov khoom ntxig.

Txhawm rau ua qhov no, siv lub cuab yeej Forensically online. Qhib nws, thauj cov duab koj xav tau, thiab tom qab ntawd xaiv lub Noise Analysis tab ntawm sab xis. Koj tuaj yeem tig cov sliders rov qab los hloov qhov rhiab heev. Cov khoom Alien yuav sawv tawm tsam keeb kwm yav dhau.

Tab sis nco ntsoov tias txoj kev no tuaj yeem dag. Yog li, yog tias Photoshop manually ntxiv suab nrov rau qhov cuav, nws yuav nyuaj dua rau kev paub qhov txawv ntawm cov ntsiab lus ntxiv.

Qhov tseeb →

Txheeb xyuas tus nqi yuam kev

Error Level Analysis, uas yog, qhov yuam kev theem tsom xam, yog ib txoj kev uas tso cai rau koj mus ntes artifacts thaum ib daim duab yog superimposed rau lwm tus. Saib ntawm daim duab los ntawm lub lim dej ELA, koj yuav pom tias cov chaw kho kom raug pom zoo dua li lwm tus. Yog tias daim duab tsis tau hloov kho, ces nws zoo li tsis sib xws: tsis muaj cheeb tsam yuav tsaus dua lossis sib dua.

Forensically txhawb txoj kev no thiab. Txhawm rau tshawb xyuas cov duab tsis txaus ntseeg los ntawm lub lim dej ELA, muab nws tso rau hauv qhov kev pabcuam thiab xaiv qhov yuam kev Level Analysis ntawm sab xis.

Txawm li cas los xij, yog tias daim duab tau rov khaws cia lossis hloov pauv ntau zaus, cov kab kho kom raug yuav plam thiab ELA yuav tsis pab koj nrhiav lawv.