Jikelezisa JPEG

Fihla Okuthe tyaba JPEG images

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Iyalayisha

Indlela yokujika JPEG

1 Layisha phezulu i JPEG images eyaphuma ngendlela engafanelekanga.

2 Khetha umjikelezo wesiqendu okanye umjikelezo wesiqendu, okanye ubhale i-engile ekhethiweyo kwaye ukhethe umbala weekona eziza kubonisa.

3 Sebenzisa ujikelezo; ii-pixels neflegi yolawulo zidityaniswe ukuze wonke umbukeli avume ukuba yeyiphi indlela ephezulu.

4 Layisha ezantsi ifayili ejikelezayo JPEG.

Jikelezisa JPEG Imibuzo ebuzwa rhoqo

Ingaba ifomati igqiba ukuba ujikelezo alulahleki?

Iyenza. I-JPEG yi-codec efanayo ne-JPG phantsi koluhlu olude — i-DCT efana ne-pipeline, i-quantization table efana ne-quantization table, akukho nto malunga nee-pixels ezitshintsha ngegama lefayili. Le mpahla igqiba ukuba ijikelezo lekota likhululekile okanye libiza ukubuyisela ikhowudi.

Nantoni na ekhethekileyo kwi JPEG ekufuneka ndiyazi?

Ewe — i.jpeg ne.jpg izilungiso ziyi-bitstream efanayo, ngoko akukho nto apha esebenza ngokuhlukileyo kune-.jpg — kuphela igama lefayili litshintsha. Yinto echaza ukuba kutheni ifayile ibonakale ilungile kwisicelo esithile kwaye ingalunganga kwisinye.

Kutheni ifayile yam ibonakale ilungile kwifowuni yam kodwa ijikeleze ngaphaya kwezinye iindawo?

Kuba ubeko lugcinwa njenge-EXIF flag kunokuba lugcinwe kwii-pixels, kwaye akukho mntu wonke obonakeleyo uyamhlonipha. Ukujikeleza apha kuyenza ibonakale ilungile - ii-pixels ne-flag zigqiba ekubeni zivumelane, ngoko ke ifayile ibonakala ifana naphi na.

I Jikelezisa JPEG ijikelezisa njani ifayili?

Ngokucacileyo, ujikelezo oluninzi lweeqondo ezili-90 luyakwenziwa ngaphandle kolahleko ngokudlulisa iibhloko ze-DCT - akukho kuphinda kukhowudi, akukho kuphinda kuzalisekiswe ulahleko; i-engile ekhethiweyo kuphela efuna ukusampuluswa, kuba i-pixel grid ngokwayo kufuneka iphinde. Iindawo ezijikelezayo zekota kunye neepesenti zojikelezo ziyimeko eqhelekileyo kwaye zithathe indlela ebiza kakhulu efumanekayo kwifomati.

Ndingaqhuba i Jikelezisa JPEG kwi JPEG 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; i pass iphakamisa 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 ujongene nokupapasha ifayili.

Ingaba kukho umda wobungakanani befayili kwi Jikelezisa JPEG?

Ewe: i-akhawunti ekhululekileyo iqhubekeka imifanekiso ukuya kwi-5 MB nganye, equka ngokucacileyo yonke ikhamera ye-JPG kunye nomfanekiso wefowuni; 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 JPEG iya kunyusa ubunjani be JPEG 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 eziluncedo ngokwakho kunokuba ufumana okumiselweyo okumiselweyo.

Kutheni i Word inxuwa liququzelela Jikelezisa JPEG?

WORD.to ibekwe ngaphaya kweso siphelo esihleliweyo sobomi boxwebhu - i DOCX eyaqhubeka nokubhala, eyaqhubeka nohlobo kunye neyaqhubeka nokungabaza, phambi kokuba umntu ayile iphepha lokuthunyelwa. Iifayili ze-office ziibhokisi ezigcweleyo zosasazo lwabanye abantu - imifanekiso, umsindo ofakwe ngaphakathi, ifonti - ngoko umsebenzi abantu abafuna kuwo uhlala usebenza kumsebenzi abafunayo kuwo onke amaxwebhu. Jikelezisa JPEG inikezela ukulayisha, icaps ne-akhawunti ngokuguqulwa ngenxa yoko.

Ndiza kwenza ntoni ngeziphumo xa i Jikelezisa JPEG igqityiwe?

Umguquli kule ndawo uthatha amaxwebhu ngaphandle kwi PDF yokuthumela, kumfanekiso wokufaka nokubhala okucacileyo nantoni na efuna ukufunda ngokudwelisa, kwaye ibuyela umva kwindlela enye. Ukwenza oko emva koko kugcina i-original eguqulelweyo ejikeleze, eyiyo inxalenye ongayi kufumana kwakhona xa iphelelwe lixesha.

Ingaba Jikelezisa JPEG apha isixhobo esifanayo esisebenza kumasayithi afana nalowo?

Iinjini zinikezelwa - uxwebhu olufanayo lwesixhobo sendlela, abasebenzi abafanayo, amaqondo afanayo. Oku Word site idibanisa kukubona okuqhubekayo ukuphuma kwifomati ye-Office kunye nokuba yintoni engayenzanga, eyiyo umbuzo ngamnye wale misebenzi ijikeleza ngoku. Iqala kwakhona kwinyani enye malunga nefomati le site ibizwa emva: uxwebhu luyi-zip ye-XML, ngoko utshintsho lombhalo luyabiza kwaye ubunzima buhlala bufana nomfanekiso ofakwe ngaphakathi.

Ndifuna i-akhawunti, kwaye ngaba kukho into egcinwa?

Akukho akhawunti, kwaye akukho nto igcinwayo: ulayisho lususwa kubasebenzi emva kokuba umsebenzi ugqibile, akukho nto ifundwayo kwaye akukho nto iqulathe isiqulathi seefayili. Iiakhawunti ezikhululekileyo zikhona kwimbali kunye nobungakanani beqela, hayi kwi access.