Jikelezisa JPG

I-Flipper ekwi-intanethi esimahla JPG

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Iyalayisha

Indlela yokujika JPG

1 Layisha phezulu i JPG images ofuna ukuyibona.

2 Khetha umgca ongagqibekanga - othe tyaba unika umfanekiso we- mirror, othe nkqo ubonisa umbono ojikelezayo phantsi.

3 Sebenzisa ujikelezo, emva koko khangela naliphi na inqaku, ilogo okanye inani kwimboniselo yangaphambili, kuba ezi zibonisa ngaphaya kunye nezinye zonke izinto.

4 Layisha ezantsi ifayili ejikelezayo JPG.

Jikelezisa JPG Imibuzo ebuzwa rhoqo

I-Jikelezisa JPG ibonisa njani ifayili?

Ngokucacileyo, i-mirror ethe tyaba okanye ethe nkqo yi-DCT eguqulweyo engalahlekiyo, ngoko ke ifayile ibhalwe kwakhona ngaphandle kokucoda kwaye iphinde ikhode umfanekiso wonke - i-output ifana ne-pixel efana ne-mirror ebhaliweyo. Ukhetha umgca ohamba phambili - othe tyaba uvelisa umfanekiso we mirror, othe nkqo uvelisa umbono ojikelezayo - kwaye ifayile yonke iguqulwa kuyo.

Yintoni utshintsho phakathi kokujika nokujika?

Ujikelezo lubuyisela umva imixholo ejikeleze umgca ojikelezayo kwaye luvelisa umfanekiso we mirror; ujikelezo lubuyisela ngaphandle kokubuyisela umva nantoni na. Umbhalo unika: ufunda ezantsi emva kojikelezo kwaye uhlala ufundeka emva kojikelezo.

Ingaba ifomati yombhalo ibalulekile xa ijikelezisa?

Iyenza. I-JPG igcina i-8-bit RGB idlula kwi-DCT elahlekile ene-4:2:0 chroma subsampleing ngokumiselweyo, ngoko umbhalo omnyama olungileyo kunye nemiphetho eqinileyo zizinto zokuqala zokuncamathela. Oku kugqiba ukuba ngaba i-mirror ingakwenziwa ngokubhalela kwakhona ifayile okanye ifuna ukuyikhupha kwikhowudi kuqala.

Nantoni na ekhethekileyo kwi JPG ekufuneka ikwazi?

Ewe — Yonke i-save iphinde iqhube i-quantiser, ngoko ukuhlela kwakhona nokugcina kwakhona i-JPG kudibanisa ukulimala kokwenza nokuba awunakunyusa umgca wokutyibiliza womgangatho. Kufuneka ulinde ixesha ngaphambi kokuba ujikelezise into engayi kuyenza kwakhona ngokulula.

Ndiza kuzama nini ukujika imifanekiso?

Ukulungisa uvavanyo okanye ukuthatha i-webcam eyaphuma ifana, yenza isibini esilinganayo sezinto eziphilayo, okanye uthelekiso lokuhamba kwento ejonge ubeko. Ukuba imixholo iqulethe umbhalo, ilogos okanye amanani, khangela isiphumo - ezifana nazo.

Ndingayijika iifayili ezininzi ngaxeshanye?

Ewe. I-axis efanayo isetyenziswe kwifayile nganye kwiqela, eyenza ukuba ulungise isiqulathi seefayili esipheleleyo semifanekiso ejikelezayo ethathwe kwindlela enye endaweni yenye ngexesha.

Yintoni endinokuyilayisha kwi Jikelezisa JPG?

Nantoni na ekufumaneni usapho lwe-raster - JPG, JPEG, JFIF ne-WebP - kunye neefomati ezingalunganga (PNG, BMP, TIFF) ukuba ufuna ukuzidibanisa kwiqela elinye. Ifomati ifundwa kwisihloko sefayili, hayi kwisiphelo, ngoko ke umfanekiso ogciniweyo nge-suffix engafanelekanga uhlala udlula.

Ingaba kukho umda wobungakanani befayili kwi Jikelezisa JPG?

Ewe: i-akhawunti ekhululekileyo iqhubekeka imifanekiso ukuya kwi-5 MB nganye, equka ngokucacileyo yonke ikhamera ye-JPG kunye nefowuni yomfanekiso; umsebenzi ukwenziwa yi-libjpeg-turbo ne-libwebp, iilayibrari ezifanayo umhleli we-desktop uqhagamshelana nazo. Iifayili ezinkulu zizinto ezi-1 ezimfutshane ezikhululekileyo eziza kukuthintela, kwaye umda yifayili nganye kunokuba yiqela ngalinye.

Ingaba i Jikelezisa JPG iya kunyusa ubunjani be JPG images yam?

Umthombo olahlwayo sele uyimpumelelo yendlela enye yokugqitha, kwaye nayiphi na imisebenzi efuna ukubuyisela ikhowudi idibanisa enye. Xa umsebenzi ungakwenziwa ngaphandle kokucofa i-pixel data siyenza endaweni, kwaye apho ayikwazi khona ukhetha umgangatho wezinto ozithandayo ngokwakho kunokuba ufumana okumiselweyo okumiselweyo.

Ndingaqhuba i Jikelezisa JPG kwi JPG images ezininzi ngaxeshanye?

Ewe. Nciphisa iqela lonke kwindawo yolayisho phezulu kwaye ziphole ngokuthe ngqo ngemimiselo efana nayo - le yisizathu esiphambili sokwenza oku kumkhangeli zincwadi kunokuba yifayile enye ngexesha kumhleli. Iiakhawunti ezikhululekileyo ziqhuba ifayile enye kwiqela; ugqithiso luyikhupha loo nto.

Ithini into ebangela ukuba i-EXIF ne-data yeprofayili yombala isebenze?

Ikhamera EXIF (ISO, i-shutter, i-lens, i-GPS) kunye ne-ICC efakwe kwiprofayili idluliselwa ngokumiselweyo, kuba ukulahla iprofayili kwenza umbala utshintshe xa uphinda urhweba ngaphakathi. Sebenzisa ukhetho lokhuseleko lokucoca i-metadata phambi kokukhuphela ukuba ujonge ukupapasha ifayili.

Ingaba i Jikelezisa JPG ibiza nantoni na?

Umhlathi Jikelezisa JPG ukhululekile ngaphandle kwe-akhawunti, akukho phawu lwamanzi kwimveliso kwaye akukho mnatha wobhaliso phambi kokukhuphela. Ukukhuphela kususwa ngokuzenzekelayo ngexesha elifutshane emva kokuba umsebenzi ugqibile.