Yuav ua li cas ua kom zoo duab ua ntej luam ntawv thiab luam ntawv
Peb yog ib lub lag luam loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv nyuaj, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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Hauv lub tshav pob ntawm ntim thiab luam ntawv, xim luam ntawv ntawm daim hlau tau dhau los ua cov tshuab luam ntawv. Qhov zoo ntawm cov teeb meem luam tawm kuj tseem tuaj yeem. Ib daim duab zoo nkauj yuav muab rau cov tib neeg zoo li kev nplij siab thiab kev zoo, ua rau cov neeg xav tias lawv nyob hauv lub ntiaj teb. Txawm li cas los, vim tias tus cwj pwm ntawm lub ntsiab lus thiab lub hauv paus ntsiab lus, txawm hais tias qhov zoo tshaj ntawm cov xim luam ntawv tau zoo heev dua qub nrog rau yav dhau los, feem ntau, tsis muaj ntau qib zoo, thiab nws tsis yog piv nrog cov khoom zoo txawv teb chaws. Muaj ntau yam tseem ceeb xws li khoom siv thiab cov khoom siv, tiam sis qhov zoo tshaj ntawm cov tswv thiab cov kev kho raug kuj tseem ceeb. Peb paub tias cov khoom uas muaj xim zoo nkauj yog muaj feem xyuam nrog txhua yam uas cuam tshuam rau hauv txoj kev luam tawm, xws li lub suab qib ntawm cov duab thawj xim, xim xim thiab qhov kev txhais zoo; kev sib cais ntawm cov xim sib txawv, xim thiab lub ntsiab lus Qhia meej txog qhov tseeb ntawm cov ntaub ntawv xws li luam kev hloov; qhov nyiaj hloov hauv cov dot qhov ntawm cov txheej txheem theem nrab xws li luam thiab luam ntawv; thiab cov neeg kawm ntawv muaj kev ruaj ntseg; qhov density ntawm tus number case qis sau, (los yog) cov pov thawj, qhov nce qhov nqi lossis cov ntaub ntawv sib ze ntawm cov duab sib luag thiab nws cov kev tswj kev ruaj ntseg. Overprinting efficiency, evolution tone, xim tshuav nyiaj li cas thiab grey tshuav ntawm txhua xim xim txheej; kev ua tau zoo thiab kev tsim nyog ntawm kev luam ntawv, chromaticity yam ntxwv ntawm tus number case thiab nws qhov kev tsim nyog; khoom siv, khoom siv thiab cov khoom siv rau txhua txoj haujlwm ua haujlwm Printability, txoj haujlwm zoo, thiab kev luam cov ntaub ntawv kho cov ntaub ntawv.
Ntawm cov saum toj no influencing factors, qhov zoo tshaj ntawm cov qauv siv ntau tshaj tawm ncaj qha txiav txim qhov zoo tshaj ntawm cov xim luam ntawv cov khoom. Yog li, thaum ua tus duab ua ntej luam ntawv, yog qhov zoo ntawm daim tseem cia li pom tias tsis zoo, nws yuav tsum tau sim thiab kho kom paub tseeb tias qhov zoo ntawm qhov teeb meem luam tawm. Txij li feem ntau cov ntawv sau ua tsis tiav yog cov tsis muaj txhij txhua, cov kws tsim tawm qib siab tsis muaj kev kawm qib siab thiab tsis muaj qhov zoo nkauj zoo nkauj zoo nkauj. Nws yog qhov nyuaj heev los tsim cov khoom zoo. Ib qho kev taw qhia me ntsis rau qee cov tswv yim thiab cov hau kev rau kev ua haujlwm tsis raws li qhov ua tau zoo hauv cov ntawv sau ua ntej.
Kev tswj cov txheej txheem kev tsim cov ntawv kawm nyuaj
Kev yawm suab xws li xim kos duab, luam tawm, thiab duab muaj qhov sib npaug zoo sib xws. Lub ceev ceev tag nrho ntawm cov xim kis tau zoo heev txawv los ntawm txoj kab sib txawv. Feem ntau, qhov sib txawv ntawm qhov sib txawv yog qhov nruab nrab ntawm 1.8 thiab 2.4, uas yog cov ntaub ntawv sau nruab nrab, uas muaj kev sib piv ntawm ntau tshaj 2.4 thiab cov ntawv sau tsis tshua muaj tsawg dua 1.8. Qhov pib ntom nti yog 0.3-0.5 raws li qhov kev tsim qauv; saum toj 0.5, tsis hais seb qhov sib txawv loj npaum li cas, nws yog tshwm sim los ntawm kev tsis txaus (los yog kev txhim kho), uas yog ib qho kev ntxim hlub; qhov sib txawv dua yog 1.6, thiab qhov pib ntom ntuag tsawg tshaj 0.3, uas yog tshwm sim los ntawm ntau dhau (los yog kev txhim kho), yog thawj qhov qub.
Qhov sib npaug ntawm txhua qhov sib txawv thiab qhov sib txawv ntawm cov xim muaj yeeb yaj kiab yuav muaj kev cuam tshuam nrog rau cov kev mob uas tsis muaj teeb meem, raug nyiaj thiab kev tsim ua duab ntawm thawj daim duab. Txoj hauj lwm ntawm daim duab ntawm cov duab cwj pwm ntawm cov duab cwj pwm txawv yog txawv, thiab qhov sib txawv ntawm qhov txawv ntawm txhua txheej yog hloov. Kev faib rau nws cov qib nws txawv. Rau cov duab thaij duab, qhov kev ua kom zoo nkauj yog ua raws li cov kev xav thiab kev pom zoo, qhia txog qhov txawv txav ntawm daim duab, qhov tseem ceeb ntawm lub teeb pom kev zoo, qhia txog kev ua kom xim, ua kom zoo thiab ua cov xim tseem ceeb hauv daim duab, xim qhov muag. Nws yog ib qho tsim nyog yuav tau hais txog qee cov kev tsis zoo nyob rau hauv txoj kev tua thiab yaug, kho thiab tuav xim, lub teeb, duab ntxoov ntxoo, lub teeb thiab sov, thiab qhov muaj suab nrov hauv kev kos duab, thiab qhia qhov xim, cua, lub teeb thiab duab ntxoov ntxoo , kev ntxhib los mos thiab lwm yam teebmeem ntawm duab thaij duab. Ua tus thawj daim ntawv muaj lub siab, lub teeb ci ntsa iab, lub suab tsaus nti thiab kev siv, muab cov neeg zoo nkaus li teeb ci thiab duab ntxoo; muaj xim zoo nkauj, xim ntsuab, hloov xim nplua nuj, muab cov tib neeg lub hwj chim ntawm tsos nqaij daim duab; heev Highlight, ntshiab siab ntawm qhov teeb meem, nplua hais, thiab hloov maj mam txheej muab lub siab ntawm realism. Hauv qhov tseeb ntau lawm, txij thaum tsaus ntuj ntawm daim duab duab yog ib qho yooj yim kom muaj xim nrum, cov khoom dub tsis yog ntshiab. Yog li, txoj haujlwm UCR / UCA yog siv los kho qhov sib txawv, yog li peb lub thawj xim versions ua kom tiav cov teebmeem ntawm cov dub, thiab tom qab ntawd ces dub version yog siv, yog li ua tiav cov txiaj ntsig dub ntshiab thiab zoo dua kev qhia txog kev ntxhib los mos cov khoom dub.
Nws tsis tuaj yeem ntseeg txoj kev ntseeg, vim hais tias feem ntau qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm cov ntawv luam tawm, yog li yuav tsum luam tawm ntawm luam tawm. Yog li ntawd, nws yog ib qhov tsim nyog los poob lub subtle theem ntawm ib feem. Hauv kev ua haujlwm, qhov tsim nyog theem nkhaus yuav tsum muab kho raws li qhov sib txawv ntawm qhov tseem ceeb thiab cov ntsiab lus ntawm lub suab lus, uas yog, theem ntawm theem nrab ntawm cov txheej txheem tsim los yog cov ntawv xa tawm. Compression, tsom ntawm lub ntsiab ntawm lub hierarchy, qhov tseem ceeb ntawm cov yam ntxwv. Nyob rau hauv qhov chaw ntawm qhov zoo sib txawv ntawm cov xim tha xim, qhov qhwv qib txhauv raug kho raws li ntau hom keeb kwm. Tab sis nco ntsoov xyuam xim rau qhov sib npaug ntawm cov xim cais sib cais, qhov nruab nrab ntawm qhov nruab nrab ntawm qhov nruab nrab tsis zoo yuav tsum yog qhov tsim nyog, qhov yuam kev tsis tiav yuav ua rau kev cuam tshuam kev cuam tshuam. Rau tag nrho xim nrum ntawm tus thawj, nws feem ntau yuav kho los ntawm kev kho cov theem kev nplhaib. Rau cov qauv qub uas muaj ntau qhov sib txawv ntawm qhov sib txawv, thaum muab cov theem sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, feem ntau yuav siv cov txuj ci nram qab no.
(1) Ib txwm raug, qhov sib txawv ntawm qhov sib txawv. Lub ntsiab tseem ceeb yog nyob rau hauv lub siab thiab nruab nrab cov laus. Nws yog ncaj nraim rau lub ci ntsa iab. Nws yog qhov zoo tshaj plaws pom kev nrig ci ntsa iab. Nws yog nyob rau theem 4 ~ 6 ntawm qhov kev ci ci tshiab. Qhov xim dub thiab dawb ntawm daim teb no yog teeb raws li tus nqi ntom nqi. Yog tias nws tsau lawm, tag nrho cov ntaub ntawv ntawm daim tseem thiab qhov nruab nrab ntawm daim tseem cia nrog tawm ntawm cov ntawv tha xim sib cais. Cov ntawv sau tseem ceeb, qhov sib txawv yog qhov nruab nrab, yuav tsum ua rau cov qib qis qis, tshwj xeeb tshaj yog thaum tsim nyog rau feem ntau nruab nrab cov qib thiab qhov ci ntsa iab.
(2) Qhov nruab nrab ntawm qhov sib txawv. Qhov ceev tsawg yog 0.3 ~ 0.5, lub siab ceev yog 2.4 ~ 2.8, qhov sib txawv no feem ntau, ze rau tus qauv ntawv sau, lub siab, nruab nrab thiab tsawg theem ntawm daim duab yuav raug sau rau hauv ib feem ntawm cov duab cwj pwm ntawm cov duab cwj pwm, qhov nruab nrab hloov qib yog nplua nuj, lub ntsiab theem qis nyob hauv nruab nrab. Qhov sib txawv ntawm qhov kev sib txawv ntawm lub suab yog qhov sib luag rau cov thawj scene, thiab xim tone feem ntau yeej yog. Nyob rau tib lub sij hawm, tus qub tone yog qhov sib txawv-compressed, thiab tus nkhaus yog hloov raws li tus qauv suab qib tu tub tu kiab, uas tuaj yeem ua tau ib qho kev hloov zoo. Txij thaum lub suab nrov tone theem faib txawv, thiab zoo ib yam yog qhov sib txawv nruab nrab ntawm thawj, lub suab qib theem luam yeeb nkawm yuav tsum kuj sib txawv. Yog hais tias nws yog ib qho meej thawj, qhov kev kawm raug kho nyob rau hauv cov ntau ntawm lub teeb thiab nruab nrab, thiab daim ntawv yuav tsum sib zog nqus kom txaus los ua kom pom cov lus teb. Yog hais tias daim tseem yog tuab, lub cev lub cev feem ntau yog nyob hauv qhov nruab nrab ntawm qhov ceev thiab yuav tsum tsis txhob tob dua. Cov yeeb yam pauv (tshwj tsis yog duab) hierarchical rendering curve yuav ua tau ntawm ob. Kev sib txawv tseem ceeb yog tsim rau kev luam tawm thiab kev luam, yees duab nrog nruab nrab cov laus thaum tsaus ntuj, qhov tsaus ntuj me me sib haum me me, thiab qhov tsaus ntuj lub suab qis yuav raug muab txo kom haum rau theem nruab nrab kev hloov.
(3) Piv txwv zoo heev. Qhov siab kho qhov muag siab tsis siab tshaj 0.4, thiab qhov siab tshaj plaws yog ntau tshaj 3.0. Feem ntau ntawm cov qauv tseem ceeb thiab sib txawv qhov sib txawv. Feem ntau, theem nrab yog nplua nuj thiab tiav, thiab qhov sib piv ntawm cov chaw qis tshaj thiab tsaus ntuj tshaj plaws tsis loj, feem ntau tsis yog lub ntsiab theem tsuas yog lub siab thiab qis dua ceev qe, uas nce qhov sib piv. Xws li cov ntawv sau, thaum xaiv cov highlights thiab ntxoov ntxoo, feem ntau muaj qib theem ob ntawm ob hnub kom tsawg los txo qhov ntau ntawm lawv cov laus tu noob. Cov txheej replicates tus tu tub tu kiv, uas yuav tau tom raws li cov duab hierarchy nkhaus.
(4) Piv txwv tsis zoo. Qhov sib txawv ntawm lub suab yog hauv qab 1.7, thiab cov ntawv ntim qis nrog qhov siab tshaj qhov siab ntawm 0.3 lossis tsawg dua yog feem ntau tshwm sim los ntawm overexposure lossis overexposure. Lub ntsiab tseem ceeb yog ci thiab nyias, thiab qhov ci ntsa iab siab. Nws yog nyob qib 7 thiab 8 ntawm qhov kev ci ci tshiab. Feem ntau ntawm lub teeb thiab cov kev kho me ntsis poob rau ntawm lub xwb pwg ntawm tus yam ntxwv tsis zoo. The degree qib ci nplua nuj yog nplua nuj, tab sis qhov sib txawv ntawm qhov sib txawv me me heev. Thiab muaj feem ntau ntawm cov cheeb tsam. Deepen lub luam thaum lub sij hawm ntau lawm kom txo qhov ci ci thiab txoj kev ua kom pom kev ncaj ncees. Rau cov ntawv sau tseg, nws yog ib qhov tsim nyog los txhim kho txoj kab thiab nruab nrab theem kev luam thiab rov faib dua. Qhov dub thiab dawb teb calibration ntom nqi yuav tsum me, thiab qhov qis thiab theem nrab hierarchical curves yuav tsum tau me ntsis deepened kom cuag zoo dua kab rov tav thiab pom qhov muag teeb pom kev zoo. Raws li cov duab ntawm lub hierarchical faib curve, lub cev lub cev yuav tsum tau kho nyob rau hauv lub range ntawm ci los yog medium ntom. Nyob rau tib lub sijhawm, nws tsim nyog siv qhov tob thiab qhov ntev ntawm lub suab dub ntxiv rau, kom qhov theem nrab ntawm kev luam thiab kev luam duab yog ntxaum tshaj li qhov kev faib tawm ntawm tus thawj, kev txaus siab ntawm kev xav hauv kev xav ntawm kev pom kev xav ntawm lub hlwb daim duab. Yog tias koj ntsib ib daim duab thev xim, qhov sib txawv me me, koj tuaj yeem ua qhov sib txawv ntawm qhov nruab nrab hloov qib loj los ntawm kev sib tsoo lub teeb thiab tsaus ntau.
(5) Cov ntawv tho thiab tho txawv. Tuab thiab qhov tho txawv uas muaj siab kho siab tshaj ntawm 0.5 los yog ntau dua thiab tshaj li 1.0 feem ntau yog tshwm sim los ntawm kev tsis txaus los yog kev loj hlob, yog li ntawm qhov tsaus nti ntawm cov duab feem ntau poob rau ntawm tus ntiv taw thiab qis dua ib nrab ntawm cov yam ntxwv tsis zoo. Lub sib piv ntawm daim tseem yog tuab thiab tho txawv. Tag nrho cov duab muaj thaj tsam loj tsawg thiab qhov ci ntsa iab. Yog hais tias qhov tseem ceeb yog nyob ntawm qhov tsaus ntuj thiab theem nruab nrab ntawm cov laus, qhov nruab nrab hloov qib yog ncaj. Rau cov ntawv sau theem nrab mas kuj zoo ib yam, qhov sib txawv me me, koj tuaj yeem hlob qhov ci qis, kom qhov nruab nrab ntawm kev sib haum xeeb zoo dua.
Lub ntsiab tseem ceeb ntawm phau ntawv tuab thiab tho txawv yog tsaus nti thiab tsaus nti, thiab nws yog nyob rau qib 2 thiab 3 ntawm tus txheej txheem tshiab uas muaj kev ci ntsa iab. Cov theem ntawm kev ci ntsa iab me me, qib theem nrab thiab tsaus yog nplua nuj thiab qhov txawv ntawm qib yog qhov muag, thiab qhov cheeb tsam qhov sib txawv loj heev. Hauv nruab nrab ntawm qhov nruab nrab ntawm qhov sib txawv, qhov tsim nyog yuav tsum tau lightened los txhim kho kev tsim ua kom muaj kev ci ntsa iab thiab ua kom pom txoj kev zoo siab. Rau cov tub luam ntawm cov thawj cov ntaub ntawv, qhov dub thiab xim teb calibration density tus nqi yuav tsum loj dua, thiab qhov nruab nrab-thiab-tsaus tone theem nkhaus yuav tsum me ntsis txo. Nws yuav tsum tau ua dua nyob rau hauv lub suab zoo nkauj xws li lub cev lub suab. Daim duab ntawm kev ua tiav yog tsim meej, thiab txheej txheem thib ob qhov nruab nrab ntawm qhov nruab nrab thiab qhov tsaus ntuj nti kuj yog kev nyuab siab ua kom tau zoo dua cov laus thiab qhov muag pom kev zoo.
(6) Cov thawj coj muaj ntau theem ntawm kev hloov kho. Qee qhov nruab nrab thiab qhov sib txawv ntawm qhov sib txawv mas muaj tsawg dua qhov nruab nrab thiab qhov loj dua qhov sib txawv, thaum qib siab dua thiab qis dua yog qib ntau dua. Piv txwv, xim yeeb yaj kiab uas tshwm sim hauv kev lag luam yuav tsum tsim kom ua rau txoj kev sib koom ua ke thiab tsaus sib luag ntawm cov duab zoo li cas. Ib daim qauv zoo dua tuaj yeem ua tau zoo.
Qhov zoo sib xws ntawm daim duab degree theem tau muab kho rau qhov sib npaug ntawm qhov kev luam. Qhov pib lub cev tseem tuaj yeem hloov tau los ntawm qhov siab tshaj qhov siab qhov chaw thiab qhov chaw teev kev hloov kho. Txawm li cas los xij, seb qhov kev faib khoom ntawm thawj daim duab muaj peev xwm ua tau raws li kev xav tau, nws yog qhov tsim nyog ua kom hierarchical qhov sib txawv ntawm kev faib khoom faib thiab faib kev faib tawm. Lub zeem muag thiab kev ntsuam xyuas ntawm kev tsim cov ntawv sau yog qhov tseem ceeb heev rau kev hloov dua tshiab ntawm kev luam thiab haj yam tseem ceeb tshaj plaws rau kev ua lag luam. Thaum sau daim ntawv rov qab, lub suab nrov feem ntau raug kho dua. Thaum qhov sib txawv ntawm qhov tseem ceeb tshaj qhov siab tshaj plaws ntawm cov ntaub ntawv tseem ceeb, kom ua lub suab nrov ntawm daim tseem cia li tshwm ntawm cov ntawv luam tawm, nws tseem ceeb heev kom rov qab tau lub suab. Cov kev kho tsim nyog. Thib ob, thiaj li hloov tau cov kev cai luam tawm ntawm qee cov ntawv tseem ceeb (xws li cov duab ci duab, cov duab tsaus nti), qee cov tones ntawm daim tseem ceeb yuav tsum tau hais meej, thiab lwm cov tones yuav tsum tau muab sib haum. Lub ntsiab feature ntawm txoj hlua tawm yog qhov sib npaug ntawm cov txheej txheem sib txawv. Tawm compression tsis sawv cev qhov tseeb kev pom zoo kwv yees zoo nkauj, vim DY curve kuj yog non-linear. Tom qab qhov kev sib txuam no, lub siab tseem ceeb yog nyob ntawm tib neeg qhov muag. Nws tsis yog qhov yooj yim kom paub qhov txawv, ua rau muaj qhov "grey level" phenomenon. Kev luam ntawm lub suab hais txog kev sib raug zoo ntawm tus thawj ntu thiab qhov feem pua ntawm cov kauj ruam sib npaug. Ua kom tag nrho cov tones thiab xim ntawm daim tseem cia li tshwm rau ntawm qhov teeb meem tshwm sim, ua ntej xaiv qhov tseeb theem nkhaus. Cov qib yog lub hauv paus ntawm lub suab lus thiab kev hloov xim. Yog hais tias cov theem ntawm cov duab tsis nplua nuj, qhov kev ua tau zoo ntawm cov xim yuav tsum yog ib qho kev sib txuas thiab tho txawv. Tsuas yog thaum theem tseem muaj tiag, tuaj yeem hloov xim tiag tiag.
Qhov sib txawv ntawm qhov sib txawv ntawm cov xim ntuj zoo ntawm cov yeeb yam kis tau tus mob yog tus loj (li 3.0 feem pua). Raws li ib txwm muaj, qhov sib txuam ntawm lub compression yuav tsum tau ua kom tiav ntawm qhov yuav tsum tau luam tawm cov teeb meem luam tawm; thaum lub sib piv ntawm thawj daim ntawv sau me me, qhov tseem yog qhov txawv txav, thiab tuaj yeem sib txawv raws li qhov sib txawv Qhov tseem ceeb nta yog ci ntsa iab. Piv txwv li, qhov kev luam cov ntawv ntawm ib daim duab yog xim ntawm tus neeg ua cim, thiab ob xim ntawm M thiab Y yog tus yuam sij; qhov tseem ceeb ntawm cov toj roob hauv pes yog lub ntuj tsim, thiab ob xim ntawm C thiab Y yog cov ntsiab lus tseem ceeb. Siv lub pob qhov rooj theem qeeb, kho tawm qhov tsim nyog theem nkhaus, kho qhov tsis zoo ntawm qhov tseem ceeb, tuav lub ntsiab qhov tseem ceeb, qhov kev sib nrauj ntawm qhov thib ob, ua siab loj xaiv, sim replicate cov txiaj ntsig zoo. Txawm li cas los xij, yog tias qhov kev hloov ntawm cov theem qis tsis tsim nyog, nws yuav ua rau cov duab yuav tsum tau ua ntej, qib tsis meej, thiab cov Hawj txawm tsis muaj tseeb. Txij li cov xim prints yog tswv cuab li duab tau muaj qhov sib txawv ntawm qhov sib txawv, qhov sib txawv ntawm qhov ntau yog ntau dua qhov sib txawv ntawm cov xim thawj, thiab kev hloov ntawm kev sib hloov yog kev tsis pom zoo hauv cov xim sib cais ua xim. Cov kev hloov dua tshiab yog siv rau txhua theem ntawm cov suab lus nyob ntawm qhov kev sib faib khoom hierarchical ntawm phau ntawv sau thiab qhov kev pom kev ntawm tus neeg. Ntawm lawv, muaj ob qhov Mengsel ci ntsa nqi ntawm qhov ua rau pom kev zoo siab thiab qhov zoo tshaj plaws ntawm tib neeg qhov kev xav ntawm lub hlwb xav tau. Yuav kom luam thiab kho cov ntawv sau txog kev sau ntawv, nws yuav tsum tau ua tib zoo saib cov kev xav tau ntawm cov neeg xav tau, ntxiv qhov ntau ntawm cov lus teb, thiab ntxiv ua ke rau hauv lub xeev ntawm txheej thawj txheej faib los xav txog qhov sib npaug qib theem ntawm qhov tsim ntawm daim duab luam tawm. Cov ntaub ntawv evolution hauv tus txheej txheem kev luam thiab reproducing, thiab tsim cov txheej txheem ntawm cov txheej txheem ntawm cov ntawv sau qhia.
Lub density ntawm cov teeb meem luam tawm yog loj, uas tuaj yeem tsim ib txhia qauv los yog theem ntawm cov thawj scene, thiab tseem ua qhov sib txawv ntawm cov theem ntawm txhua theem qhib, thiab cov nyhuv stereoscopic muaj zog. Nyob rau hauv kev, nws yuav ua rau qhov sib txawv ntawm qhov sib txawv thiab ua rau lub ntsej muag ntawm cov duab hierarchy. Ntawm qhov tod tes, xim ntawm daim duab yog qhib, uas ua rau cov ntxaum ntsej muag thiab ntiav, thiab ua rau lub siab qhov sib txawv ntawm peb sab. Txawm li cas los xij, qhov nce ntawm qhov kev luam tawm ntawm cov ntawv luam tawm txheej yog inconsistent nrog cov nce hauv cov nplooj ntawv me me, thiab nws tsis tuaj yeem ua kom muaj siab ceev li xim pob tshab ntawv. Tsuas yog nyob rau hauv qhov zoo heev ntawm daim ntawv, tus number case, khoom adaptability thiab cov tshuab luam ntawv precision, peb tuaj yeem txo qis dua thiab siab dua ink plav txheej. Yog li ntawd, lub hom phiaj kev cai rau kev txiav txim siab qhov kev ntsuas zoo no yog siv xim xim xav txog kev ntsuas densitometer los ntsuas cov lej ntawm cov ntawv luam tawm ntawm cov zauv luam tawm thiab cov luam ceev ntawm 75% dot printing, thiab xam cov nqi K luam tawm. Thaum nws muaj ib qho kev luam ntawv siab (phaj daj 0.3-0.4, phiab cov phom thiab cyan phaj 0.4-0.55, dub phaj 0.5-0.6), nws cov density zog siab dua, thiab qhov kev ua haujlwm ntawm cov xim hauv cov xim ntawm txhua xim txheej yog ze rau 90. Thaum siv%, lub suab ntawm daim luam tau zoo dua. Cov ntawv pov thawj no yuav tsum tau meej meej, tuab thiab tag nrho, thiab muaj ib qho duab uas muaj peb sab. Yuav kom txuag tau tus lej luam ntawv, nws tau tawm suab kom txo qhov ceev ntawm cov ntawv luam tawm number case los txo cov nyiaj poob haujlwm. Yog li, txawm hais tias cov ntawv teev cov ntawv teev cov ntawv teev npe tsawg dua, qhov kev hloov ntawm cov duab tsaus nti kawg yog txo, tab sis lub suab sib txuas tag nrho tsis yog qhov siab tshaj plaws. Nws tseem tsis tau ua qhov kev tshaj tawm zoo tshaj plaws ntawm kev sau suab nrov.
Txij thaum lub suab paj nruag luam yog ib qho hloov tsis tau hloov, kev hloov kho them yuav tsum ua ntej luam ntawv. Cov pob txha taw muaj kev txwv los ntawm ntau lub sijhawm thaum lub sij hawm hloov cov txheej txheem ntawm kev luam ntawv thiab luam ntawv, thiab kev sib kis ntawm lub suab nrov yog nonlinear. Yuav kom hloov mus rau cov txheej txheem luam ntawv, kev hloov kho kom raug them nyiaj. Lub ntsiab lus tseem ceeb yog kho peb qhov chaw dhia ntawm lub luam ntawv, hu ua peb qhov chaw tseem ceeb, uas yog li 3%, 50%, thiab 80%. Vim hais tias 3% cov ntsiab lus me me poob yooj yim, nws yuav cuam tshuam rau cov xim theem ntawm cov cheeb tsam tseem ceeb. Lub cheeb tsam ntawm 50% yog qhov yooj yim kom nce, uas yuav cuam tshuam rau nruab nrab cov laus. Cov xim ntawm cov cim tshwj xeeb hloov. 80% ntawm qhov cheeb tsam dot yog yooj yim rau theem, uas yuav cuam tshuam rau theem tsaus nti. Nws yog theem ntawm lub ntsiab xim ntawm xim tsaus nti-toned ntawm daim tawv nqaij thiab qhov tob ntawm tus thawj xim, ua rau nws nyuaj tu ob, thiab feem ntau xav tias thaum poob. Vim li no, cov xim tseem ceeb thiab tseem ceeb ntawm qee cov qauv tseem ceeb kho kom tsis txhob muaj peb qhov chaw dhia, qhov no muab cov ntawv luam tawm zoo rau luam ntawv, ua kom yooj yim luam tawm thiab luam tawm cov khoom zoo.
Yuav ua li cas nrog rau qhov teeb meem ntawm tus thawj sharpness
Lub sharpness ntawm cov xim prints yog ib qho tseem ceeb qhia tau rau cov duab kev luam. Tsuas yog cov tswv yim tshwj xeeb ntawm kev nthuav tawm cov duab, tsawg kawg yog ib feem ntawm qhov theem (kawm lossis tom qab) ntawm txhua daim duab meej. Cov kev cai rau kev pom tseeb mas yog cov hauv qab no.
(1) Qhov tseeb ntawm daim duab hierarchy tus qauv qhia. Ua ntej, yuav tsum muaj qhov zoo (piv txwv li, qhov tseeb) ntawm tus ciam ntawm daim tseem ntawv raws li lub hauv paus. Nyob rau tib lub sijhawm, nws nyob ntawm qhov loj ntawm kev ua tiav ntawm lub phaj-ua optics, lub thickness ntawm cov hluav taws xob xim cais tsom thiab cov ntaubntawv povthawj siv cov ntaubntawv povthawj siv thiab qhov tseeb ntawm plaub-xim duab haum. Nyob rau hauv tag nrho cov txheej txheem ntawm luam luam, txoj kev hloov dav ntawm daim duab hierarchy ciam yog yuav maj widened, tshwj xeeb tshaj yog mus ua ntug daim ntawv. Cov theem ntawm ciam solidity tsis tuaj yeem raug txum tim rov qab. Lub sharpness ntawm tus ciaj ciam ntawm cov prints yog tsuas pom highlighted los ntawm kev sib cais ntawm lub separations.
(2) Lub meej tshaj ntawm qhov sib txawv ntawm ob theem ntawm cov duab, uas yog, qhov sib txawv me ntsis. Yog hais tias qhov sib txawv ntawm cov txheej uas nyob ib sab yog loj, qhov kev xav pom tseeb. Conversely, yog qhov sib txawv me me, qhov qib yog tiaj thiab lub zeem muag tsis yooj yim rau qhov txawv. Kev sib luag zoo yog qhov kev txiav txim siab los ntawm kev sib txawv ntawm cov txheej thawj, thiab tseem muaj kev txwv los ntawm kev luam thiab kev kho kom haum raws li lub suab qib. Nws muaj peev xwm mus nqa tawm hierarchical ciam sib piv nyob rau hauv cov ntaub ntawv ntawm cov xim sib cais, thiab kom lub illusion ntawm visual sib piv ntawm hierarchical ciam, thiab qhov sib txawv ntawm lub subtle theem yuav muaj zog heev.
(3) Kev daws teeb meem ntawm daim duab los yog daim duab hierarchy, uas yog, qhov hloov maj mam sim ntawm nws cov subtle qib, yog lub ntsiab ntawm cov khoom uas sawv cev rau lub hom phiaj scene, uas yog, lub ntsej muag hu. Daim ntawv luam tawm yog raws li kev daws teeb meem ntawm thawj daim duab, tab sis nws muaj kev cuam tshuam los ntawm qhov kev daws teeb meem, qhov loj, qhov tuab ntawm cov xaim thiab plaub hom xim ntawm lub phaj. Los ntawm cov txheej txheem phaj, kev xaav ntawm thawj theem tsis tuaj yeem txum tim rov qab. Nyob rau hauv cov xim sib cais ua xim, nws yog qhov tsim nyog yuav tau txais kev ntsuas xws li daim npog ntsej muag thiab lub tshuab hluav taws xob ntxiv rau "npoo" rau cov duab ciam, uas yog kev ua kom pom qhov muag pom ntawm cov duab plaub zuj zus. Cov "npoo" ntxiv rau ciam teb ntawm tus qauv duab, nrog rau ob qhov kev pom ntawm qhov dav thiab qhov siab siab. Lub ncov zoo thiab tsis pom kev yog tsis muaj qhov sib kis ntawm cov tsis pom kev, thiab tsuas yog siv cov qhab-nees Band ntawm lub zeem muag, tiam sis tsis yooj yim pom tau ntxig. Qhov dav ntawm "trimming" yog linearly kis mus rau lub zeem muag. Ntau loj (tshwj xeeb tshaj yog nyob rau ntawm sab nraud ntawm ciam teb) yog kom pom tseeb ntawm qhov muag pom, ua rau ib qho chaw ruaj ntseg; tsawg dhau, uas yog tsis conducive rau qhov kev pom Mach qh band effect. Tsuas yog thaum lub dav ntug "ntug" thiab qhov siab siab ncav kom sib haum thiaj tuaj yeem ua kom pom qhov pom ntawm cov qhab nia pom meej thiab tsis sib haum, thiab tib lub sij hawm txhim kho qhov pom kev zoo ntawm qhov tsis zoo ntawm txoj kab sib luag thiab kev hloov maj mam. Yog li ntawd, cov nyhuv ntawm qhov muag pom ntawm Band cov nyhuv ua tau los ntawm cov "ntug kho kom zoo nkauj" ntawm hierarchical ciam yog qhov qauv los ntsuas qhov zoo ntawm qhov kev txiav txim siab hierarchical. Vim hais tias ntawm qhov kev pom ntawm Mach band effect thiab kev daws teeb meem, nws yog raws li ib qho nqi ntawm qhov muag ntawm kev siv lub cev thiab lub cev, thiab yog qhov tseem ceeb. Yog li ntawd, nws yog ib qho kev ntsuam xyuas ncaj qha thiab yooj yim ntawm kev pom los ntawm kev pom qhov sib txawv ntawm cov ntawv luam tawm thiab qhov tseem ceeb, thiab ua ib daim qauv ntawm lub hierarchy. Rau qhov kev soj ntsuam no, yuav tsum tau muab cov teeb meem luam tawm raws li qhov tsim nyog uas pom zoo thiab pom kev nrug. Lub qhov muag, lub qhov txhab, lub cev, qhov chaw, thiab cov tsis muaj teeb meem ntawm cov ntawv luam yuav ua rau lub cev tsis tu ncua ntawm cov duab pom meej, thiab nws tuaj yeem ncaj qha visually thiab kev xav tau zoo. Lub qhov ncauj thiab qhov ntawm cov khaub ncaws ntawm cov khaubncaws sab nraud yog txiavtxim siab los ntawm cov ntaub ntawv tseemceeb, thiab qhov tseem ceeb ntawm qhov loj thiab qhov tseem ceeb ntawm qhov pib ua haujlwm (kev hloov ntawm qhov ua tau zoo). Ib qho tseem ceeb me me raug muab tso rau ntawm txoj kev hloov ntawm qhov pib nqi, thiab cov khoom tuaj yeem tuaj yeem kho tau, tab sis nws cuam tshuam rau qhov tseem ceeb ntawm qhov tseeb. Kev txhim kho ntawm kev txhim kho kuj tuaj yeem txo cov qoob loo thiab ua rau lub plab ntawm cov khaub ncaws ncaj, tab sis nws tawm tau yooj yim ntawm kev kho kev zoo, thiab feem ntau yuav tsis tau txais cov txiaj ntsig zoo. Qhov teeb duab, qhov tsis sib thooj thiab sau cov nplooj ntawv tsis zoo ntawm lub vijtsam duab cuam tshuam rau ntawm tus qauv hauv daim duab. Tsis zoo los sis tsis zoo ntawm cov ntawv luam tawm yuav ua kom lub plab ntawm cov khaub ncaws ncaj ncaj. Lub moiré yog tshwm sim los ntawm qhov tsis yog lub kaum sab xis ntawm lub cable. Rau qhov magenta version ntawm daim duab cov duab, ntsuab version ntawm daim duab landscape, thiab dub version ntawm Suav daim duab, ib tug 45 ° cable kaum yog siv. Cov kev ua tau zoo li no tuaj yeem tshawb xyuas los ntawm scanning density amplification lossis microdensity kev ntsuas ntawm lawv txoj kev xav, teeb tsa cov qauv kev ntsuas kev ntsuas. Txawm li cas los xij, nws yog hom phiaj thiab yooj yim los siv visuals rau kev ntsuam xyuas kev pom.