JFIF Isiguquli

Guqula JFIF ukuya nokubuya kwiifomathi ezahlukeneyo

Malunga JFIF

I-JFIF (iFomathi yoTshintsho lweFayile yeJPG) ime njengefomathi yefayile eguquguqukayo elungiselelwe ngokukodwa utshintshiselwano olungenamthungo lwemifanekiso efakwe kwi-JPG. Le fomati idlala indima ebalulekileyo ekwandiseni ukuhambelana nokwabelana ngesakhono kwiinkqubo ezahlukeneyo kunye nezicelo. Iqondwa ngolwandiso lwefayile oluqhelekileyo ".jpg" okanye ".jpg", iifayile ze-JFIF zisebenzisa amandla e-algorithm yoxinzelelo lweJPG esetyenziswa ngokubanzi, idume ngokusebenza kwayo ekucinezeleni imifanekiso yeefoto.

Iindlela Ezisetyenziswa Ngazo Eziqhelekileyo

Web photographs
Social media images
Online sharing

JFIF Imibuzo Ebuzwa Rhoqo Ngokuguqula

Yintoni ifayili JFIF?

JFIF (JPEG File Interchange Format) is a standard for exchanging JPEG-compressed images.

Ingaba ukubuyisela uvimba we JFIF kwenza ukuba kube nzima ixesha ngalinye?

Ewe, kwaye loo nto yinto enye ekufuneka uyazi malunga nefomati. Ukugcina ngalunye luphinda luqhube i-lossy encoder ngaphezulu komfanekiso osele ugqithisele kuyo, ngoko ke i-artefacts idityaniswa - ibonakala njenge-blocking ejikeleze umbhalo kunye ne-haloes kumazantsi anzima emva kweentsuku ezininzi zobuhlanga. Hlela ukusuka kwi master engalahlekiyo kwaye urhwebe ngaphandle kwi JFIF kabini, kwisiphelo, kunokuba uvule kwakhona ugcine kwakhona ifayile efanayo. I-data yomfanekiso yi-JPEG eqhelekileyo; i-JFIF ichaza kuphela uxinzelelo kunye neendawo zokutyhila okukhawulezayo ezijikeleze, ngoko ke i-.jfif ne-.jpg zimfanekiso ofanayo.

Kutheni le nto ikhamera nefowuni nganye inika JFIF?

Kuba yifomati yonke inkqubo yomfanekiso ibekwe kwiminyaka emininzi eyadlulayo, kwaye akukho nto ukusukela ngoko ifanele umngcipheko wokulungelelanisa umenzi wekhamera. I data yophatho iqhubekekiswa kwaye ikhowudiwe kwikhamera ngokwayo, kwiqwalaselo lomgangatho olutywinwe kwimenu, kwaye oko kuwela kwikhadi sele kumfanekiso ogqityiweyo. Le nto ibangela uguqulelo lokuqala lomfanekiso aluzange lube lugqibo olulahlekileyo abantu bakhathazeka ngalo - ugqibo olulahlekileyo sele luye lwa kwenzeka, ngaphakathi kwekhamera. I-JFIF yi-JPEG File Interchange Format — i-header ecacisa ukuba i-JPEG bitstream egqityiweyo iguqulwe ibe yifayili ephathekayo.

Ingaba i-JFIF ifana nefomati yesinye isiqalelo?

Ewe. Eli xhulumaniso negama elide okanye elifutshane obona ngaphaya kwayo lichaza ifomati enye ephantsi, kwaye nantoni na efunda okanye ifunda zombini. Amagama amabini akwimbali: umda wegama lefayile leimpawu ezisibhozo ukusuka kwi DOS yexesha, umboneleli onika igama lodweliso lwenkqubo endaweni yefomati yefayile, okanye iinkqubo ezimbini eziqhelekileyo ezihlukileyo. Uguqulelo lwesibini luvelisa iziphumo ezifanayo, ngoko sebenzisa naluphi na uxhulumaniso isoftware kwinye icala ilindele.

Yintoni isicwangciso somgangatho endingayisebenzisa xa ndiguqula kwi JFIF?

Indawo ephakathi kwe 80 ne 90 yento nantoni na umntu oza kuyijonga. Ezantsi malunga ne 75 iindidi zezinto ezibonakalayo ziyaqala ukubonisa kwisikhumba, ilanga nakweyiphi na indawo enkulu ethe tyaba; ngaphezulu kwe 95 ifayile ikhula ngokukhawuleza ngelixa akukho mntu ubona utshintsho. Isicwangciso asiyophawu lomfanekiso, lugqibo malunga norhwebo lwangaphandle oluthile - ngoko khetha apho ifayile isiya khona, kwaye ugcine okuqala kwixesha elizayo xa ufuna impendulo eyahlukileyo.

Kutheni le nto isiqalo sam esicacileyo sitshintshe simhlophe kwi JFIF?

Kuba JFIF ayinasiqhagamshelanisi se-alpha sokugcina kuyo. I-pixel nganye kufuneka ibe nombala oqinileyo, ngoko ukubonakala okucacileyo kudityaniswa nokungasemva - omnyama ngokumiselweyo - kwixesha apho ifayili ibhalwa khona. Akukho nto ibuyiselwa emva koko. Ukuba umfanekiso ufuna ukuba uhlale kwiphepha elimnyama okanye ngaphezulu komfanekiso, guqula kwifomati egcina ukubonakala okucacileyo endaweni yoko. Uluhlu lwe.jfif luzalisa iiWindows kunye nezixhobo ezininzi ze web ezisebenzisayo ukuyeka ifayile, ekufuneka ikhoyo kuphela ngenxa yokuba umntu uguqula.

Ingaba ndimele ndigcine iifayile ezintsha njenge JFIF?

Ukuba into ephantsi kwendlela ifuna oku. Ifomati iyaqhubeka ivula, kwaye akukho mcimbi wokuguqula uvimba ongazibangela iingxaki, kodwa ayikwazi ukuqhubeka apho isixhobo okanye usebenziso luya khona. Kwanoma iyiphi into entsha, ifomati yangoku ayihlawuli nto engaphezulu kwaye ikhusela umjikelo olandelayo wombuzo kwiminyaka emininzi ezayo.

Ingaba kubaluleke na ukuba u JFIF uneminyaka engaphezu kweeminyaka ezimashumi amathathu ubudala?

Ubudala ngokwalo alukuyingxaki - iifomati ezininzi ezivela kulo nyaka zihlala zilungile, ngokucacileyo ngenxa yokuba konke kwakuba neminyaka emininzi yokuzisebenzisa. Okubalulekileyo kulapho ixesha licinga khona: iifayile ezincinci, abaqhubi abancinci, akukho msebenzi womnatha, kunye neempawu ezingafunekiyo. apho ezi zinto zicinga khona, ifomati ilungile. apho azisebenzi, le yisizathu sokuguqula.

Ingaba ikhamera nendawo ye-metadata igcinwa xa ndiguqula i-JFIF?

Ithwala apho ifomati emiselweyo ixhasa khona - imodeli yekhamera, ukubonakala, ixesha lokuqwalasela, kunye ne GPS ikhowudi xa isixhobo sirekhoda. Lo mhla wokugqibela ufanele uthathelwe ingqalelo phambi koshicilelo: umfanekiso osuka kwifowuni uthatha indawo efanelekileyo. Ukhuphe i metadata ngexesha loguqulelo xa umfanekiso usiya kwindawo esemthethweni.

Ndingasebenzisa i-JFIF ngokuthe ngqo kwiphepha le-web?

Ewe - yonke ibrowser yangoku iyenza ngokusemthethweni, ngoko ayifunanga ukopi ozakubuyela umva nokuguqulela ngexesha lokushicilela. Umbuzo osele ukhona ubunzima kunokuba uxhaso: umfanekiso ofanayo kwifomati ye web ekutsha ihlala ikwishumi elinesibini yobungakanani kwifomati ebonakalayo yomgangatho, ekufuneka yenziwe nantoni na ebonakala ngapha kweqokobhe. I-JFIF ihambelana ne-byte ne-JPG, ngoko ke ukunika igama kwakhona okanye ukutshintsha kumsebenzi we-metadata kunokuba kuqhubekeko-magama.

Ndingayinika kwakhona igama elipheleleyo lesiqendu endaweni yokuguqula i JFIF?

Akukho nanye, kwaye ifanele ukuqonda kutheni: unikezelo luphawu, ngelixa i bytes ngaphakathi zidityaniswe kwifomati ekhethekileyo. Ukuphinda ubize ifayile ivelisa ifayile igama layo lithembisa into imixholo yayo ayinikezeli, kwaye nantoni na evula ifayile okanye ilahlekile ifayile okanye ifunda ngokungachanekanga. Ukuphela kwendlela efutshane kuhlobo olubini oluyinyani ibhokisi efanayo phantsi kwegama elahlukileyo - kwaye nalapho ukuphinda ubhale ngokuchanekileyo kukhuselekile kunegama elahlukileyo.

Ndingaguqula isiqulathi seefayili esipheleleyo se JFIF iifayili ngenye indlela?

Nge akhawunti, ewe - shiya ngaphaya kunye kwaye zifolwa njengemisebenzi enye endaweni yokuphathwa enye ngexesha, ngemimiselo efanayo esetyenziswa kwiqela kunye neziphumo ezibuyiselweyo kunye. Uguqulelo oluzenzekelayo luqhuba ifayile enye ngexesha (izixhobo zokudibanisa zithatha ezimbini); inkqubo ehlawulweyo ivula uqhubekeko lweqela kunye nobukhulu befayile nganye umda, owenza uguqulelo lwefayile yonke yovimba isebenziseke.