Alpha channel yog lwm hom channel muaj nyob hauv Photoshop. Lawv tau tsim los khaws seem xaiv rau yav tom ntej siv lossis kho.
Raws li cov txheej txheem tshwm sim - alpha conjugation, lawv tau txais lub npe no. Qhov no yog txheej txheem nyob rau hauv uas daim duab nrog qee qhov chaw pob tshab muaj peev xwm txuas mus rau lwm daim duab, uas ua rau txoj hauv kev txhim kho tshwj xeeb, tseem muaj qhov cuav.
Rau cov thev naus laus zis zoo, nws yog qhov ua tau kom txuag tau qhov chaw uas tau faib. Nws tuaj yeem siv sijhawm ntau thiab thev naus laus zis los tsim nws, tshwj xeeb tshaj yog thaum koj xav tau los tsim cov kev xaiv ua uas yuav siv ob peb teev. Thaum lub sijhawm cov ntaub ntawv tau khaws tseg los ua PSD ntawv, alpha channel nyob ntawm koj qhov chaw txhua lub sijhawm.
Txoj kev siv ntau tshaj plaws ntawm kev siv alpha channel yog tsim ntawm txheej npog ntsej muag, uas yog siv txawm tias thaum tsim cov kev xaiv tseem ceeb tshaj plaws, uas tsis tuaj yeem ua tiav los ntawm lwm txoj kev.
Tseem ceeb kom nco ntsoov
Ua haujlwm nrog al-channel luv-luv alpha yog nqa tawm thaum koj siv txoj haujlwm nrog Quick npog qhov haujlwm.
Alpha channel. Kev kawm
Feem ntau cov ntawd yuav muab xav tias yog qhov dub-thiab-dawb hloov pauv ntawm feem tau muab rau koj. Yog tias koj tsis hloov lub phiaj xwm kev pabcuam, nyob hauv tus qauv teeb tsa thaj chaw tsis muaj qhov cim ntawm lub duab raug cim ua xim dub, uas yog, tiv thaiv lossis zais, thiab nws yuav tau qhia ua dawb.
Zoo ib yam li cov npog ntsej muag, lub suab nrov grey qhia kev xaiv tau xaiv, tab sis qee feem, chaw thiab lawv dhau los ua lus zoo.
Txhawm rau tsim, koj yuav tsum ua cov theem nram qab no:
Xaiv "Tsim channel tshiab"Cov. Cov khawm no ua rau nws tsim tau Alpha 1 - channel alpha ntshiab uas yog xim dub, vim tias nws khoob kiag li.
Txhawm rau xaiv thaj chaw, koj yuav tsum xaiv ib lub fixture Txhuam nrog cov xim dawb. Qhov no zoo ib yam rau kev kos lub qhov hauv lub npog ntsej muag rau kev muaj peev xwm pom, tseem ua lub ntsej muag zais hauv qab nws.
Yog tias koj xav tsim qhov kev xaiv dub thiab ua kom cov seem hauv lub tiaj dawb, tom qab ntawd muab tus xaiv ntawm lub thawv - Cov Cheeb Tsam.
Txhawm rau hloov alpha channel thaum lub luag haujlwm khiav "Lub ntsej muag ceev" koj xav tau xim nyob rau hauv txoj haujlwm no, tseem hloov tau pob tshab. Tom qab teeb tsa lub chaw kom raug, nyem rau ntawm Ua li.
Koj tuaj yeem xaiv los ntawm xaiv cov lus txib hauv cov ntawv qhia zaub mov - Xaiv - Txuag xaiv.
Koj tuaj yeem xaiv xaiv los ntawm txhaj rau - Txuag xaiv rau channel
Alpha channel. Hloov
Tom qab tsim, koj tuaj yeem tsim kho xws li cov channel hauv txoj kev ib yam li txheej npog ntsej muag. Siv cov cuab yeej Txhuam lossis lwm yam khoom siv uas pabcuam los qhia txog lossis hloov, koj tuaj yeem kos ntawm nws.
Yog tias koj xav nqa cov cuab yeej rau xaiv, koj yuav tsum xaiv lo lus txib, uas nyob hauv cov ntawv qhia zaub mov - Hloov Kho - Sau.
Daim ntawv yuav qhib - Siv.
Koj tuaj yeem xaiv cov xim dub lossis dawb nyob ntawm txoj haujlwm - ntxiv rau qhov tsim nyog lossis rho tawm ntawm nws. Hauv rooj plaub tom kawg, qhov chaw hauv qab yog tsim los ntawm cov neeg dawb, tus so ua dub.
Txhawm rau tso cov ntaub ntawv hauv Photoshop ntawm qhov tsis sib thooj, uas yog, hauv cov xim dub, koj yuav tsum nias ob ntawm lub Xais me me. Lub - Xaiv cov thawv ntawv tshwm sim, tom qab ntawd teeb tsa mus rau - Thaj chaw xaiv. Tom qab ntawd, lub npog ntsej muag xim yuav hloov hauv daim ntawv thov.
Kho kom raug koj tus kheej alpha channel tau ua tiav siv - Lub ntsej muag ceevCov. Koj yuav tsum nyem rau ntawm kab lus piav qhia kev sib txuas channel.
Tom qab ntawd qhov kev zov me nyuam yuav tsim ib qho xim liab liab rau ntawm daim duab. Tab sis yog tias koj tab tom kho cov duab uas muaj qhov liab feem ntau, ces tsis muaj dab tsi yuav pom los ntawm daim npog ntsej muag. Tom qab ntawd tsuas yog hloov xim ntawm overlay mus rau lwm qhov.
Koj tuaj yeem siv cov ntxaij lim dej uas siv rau alpha channel, zoo ib yam li siv txheej npog ntsej muag.
Qhov tseem ceeb tshaj: Gaussian Plooj, uas tso cai rau koj kom muag lub npoo thaum qhov tseem ceeb me ntsis fuzzy; Mob stroke, uas yog siv los tsim cov npoo tshwj xeeb hauv daim npog ntsej muag.
Rho tawm
Qhov kawg ntawm kev siv lossis kev txiav txim siab pib ua haujlwm nrog cov channel tshiab, koj tuaj yeem tshem tawm cov channel tsis tseem ceeb.
Luag lub channel mus rau hauv lub qhov rai - Rho tawm cov channel tam sim no - Rho tawm, ntawd ces yog cov khib nyiab me me tuaj yeem tuaj yeem. Koj tuaj yeem nyem rau ntawm lub tib lub pob thiab tom qab paub meej ntawm kev tshem tawm, nyem rau ntawm lub pob Yog lawm.
Txhua yam uas koj tau kawm txog alpha channels los ntawm tsab xov xwm no yuav pab tsim kev ua haujlwm nyob rau hauv Photoshop program.
