JFIF Isiguquli

Guqula JFIF kuya futhi kusuka kumafomethi ahlukahlukene

Mayelana JFIF

I-JFIF (i-JPG File Interchange Format) ime njengefomethi yefayela enemisebenzi eminingi eklanyelwe ukushintshana okungenazihibe kwezithombe ezifakwe ikhodi ye-JPG. Le fomethi idlala indima ebalulekile ekuthuthukiseni ukuhambisana namandla okwabelana kuwo wonke amasistimu nezinhlelo zokusebenza ezihlukahlukene. Kuqashelwa isandiso sefayela esithi ".jpg" noma ".jpg", amafayela e-JFIF asebenzisa amandla e-algorithm yokucindezela ye-JPG esetshenziswa kakhulu, edume ngokusebenza kahle kwayo ekucindezeleni izithombe zezithombe.

Ukusetshenziswa Okuvamile

Web photographs
Social media images
Online sharing

JFIF Imibuzo Evame Ukubuzwa Yokuguqulwa

Yini ihele JFIF?

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

Ingabe ukulondoloza kabusha i JFIF kwenza kube nzima ngaso sonke isikhathi?

Yebo, futhi lokho kuyinto eyodwa efanele ukwazi mayelana nefomethi. Ukugcina ngalunye kuphinde kuqhube umbhalo odlulile kusithombe esivele sidlule kulo, ngakho-ke ama-artefacts axhunywe - abonakala njenge-blocking ngaphesheya kombhalo kanye nama-haloes ezimbozweni ezinzima ngemuva kwekhulu elincane leminyaka. Hlela kusuka ku-master engalahleki futhi ukhuphule ku JFIF kabili, ekugcineni, endaweni yokuvula futhi ugcine kabusha ifayela elifanayo. Isithombe-data yi-JPEG ejwayelekile; i-JFIF ichaza kuphela ukuphakama nokuncane kwezindawo ezingaphansi kwayo, ngakho-ke i-.jfif ne-.jpg yisithombe esifanayo.

Kungani zonke ikhamera nefoni ziminikeza JFIF?

Ngenxa yokuthi iyifomethi i-photographic chain yonke ihlala eminyakeni eminingi edlule, futhi akukho okuzosiza ukuvimbela ukuhambisana kwe-camera maker. I-data yesenzo iphathwa futhi ikhodwe kwi-camera, ku-quality setting ehlotshiswe kwimenyu, futhi okusetshenziswe kwikhadi liyisithombe esiqediwe. Lokhu kusho ukuthi ukuguqulwa lokuqala lwesithombe akuyona inqubekela phambili elahlekile abantu abakhathazekile ngayo — inqubekela phambili elahlekile idlule, ngaphakathi kwe-camera. JFIF yi-JPEG File Interchange Format — isibonisi esiphezulu esichazayo esikwenza i-JPEG bitstream engaqondakali ibe yifayela eliphathekayo.

Ingabe JFIF ifana nefomethi njengenye ingqikithi yayo?

Yebo. Lezi zibanzi kanye negama elide noma elincane okubona ngakwesokudla lichaza uhlobo oluthile olungaphansi, futhi noma yini efunda noma ifunda zombili. Izibizo ezimbili ziyimlando: i-8-character filename limit from the DOS era, a vendor naming of its application rather than its file format, or two programs that simply defaulted differently. Converting either produces the same result, so use whatever extension the software at the other end is expecting.

Yini isilungiselelo sekhwalithi okufanele ngiyisebenzise uma ngiguqula ku JFIF?

Ngaphakathi kuka-80 no-90 nganoma yini umuntu uzoyibheka. Ngaphansi kuka-75 i-artefacts iqala ukubonisa ku-skin, i-sky kanye nanoma iyiphi indawo enkulu ehlanzekile; ngaphesheya kuka-95 i-file ikhula ngokushesha ngenkathi akukho muntu okwaziyo ukubona ushintsho. Isilungiselelo asiyimpahla yesithombe, kuyisinqumo mayelana nale mpahla engaphandle ekhethekile — ngakho khetha lapho ihele lizohamba khona, futhi gcina okuyinhloko ngesikhathi esilandelayo lapho ufuna impendulo ehlukile.

Kungani isizinda sami esicacile sishintsha sibe mhlophe ku JFIF?

Ngenxa yokuthi JFIF ayinaso isixhumi se-alpha sokugcina. I-pixel ngayinye kufanele ibe nombala oqinile, ngakho ukubukhali kuhlanganisene nendawo yangaphambili - okumhlophe ngokuzenzakalela - ngesikhathi ihele libhalwe. Akukho okuzobuyiselwa emuva. Uma isithombe sidinga ukuhlala kwikhasi elimnyama noma ngaphezulu kwesithombe, guqula kufomethi egcina ukubukhali endaweni. I-.jfif ubanzi luthinta amawindi namathuluzi wewebhu ambalwa ukuvimbela ifayela, okuvame ukuba yisizathu sodwa sokuba umuntu aguqule.

Ingabe kufanele ngigcine amafayela amasha njenge JFIF?

Uma nje kukhona okuthile okudingayo. Ifomethi ivuliwe, futhi akukho sidingo sokushintsha ingobo yomlando ongeke ukwenze kube nzima, kodwa akuyona indawo lapho ithuluzi noma umphumela uhamba khona. Kunoma yini entsha, ifomethi yamanje ayidingi lutho olungeziwe futhi ivimbela ukulandelana kwesifundo seminyaka emincane kusukela manje.

Ingabe kubaluleke ukuthi JFIF ingaphezu kweminyaka engu-30?

Ubudala bukhona akuyona inkinga - amafomethi amaningi onyaka akhona alungile, ngokucacile ngoba konke kudlule iminyaka eminingi ukuwafaka. Okubalulekile ukuthi unyaka uthathe isinqumo: amafayela amancane, amaprosesa aphansi, akukho nethiwekhi, futhi amakhono angeke afune umuntu. lapho amanani ahlala khona, ifomu lilungile. lapho ayikho, lena yisizathu sokushintsha.

Ingabe ikhamera nendawo yedatha yemeta igcinwa uma ngiguqula i JFIF?

Ithwala lapho ifomethi efuna ukufinyelela isekela khona - imodeli yekhamera, ukuboniswa, isikhathi sokuqoqa, kanye ne-GPS coordinates uma isisetshenziswa sizorekhoda. Le yamuva ifanele ukucabanga ngaphambi kokuthunyelwe: isithombe esihamba phambili esisuka kufoni singathwala indawo efanele ethathwe. Nciphisa i-metadata ngesikhathi sokushintshana uma isithombe sihamba endaweni esemthethweni.

Ingabe ngisebenzisa JFIF ngokuqondile kwikhasi le-web?

Yebo — wonke umsakazi okhona uyenza ngokusemthethweni, ngakho-ke adinga ikhophi engekho futhi adinga ukuguquka ngesikhathi sokushicilela. Imibuzo ekhona isisindo ngaphezu kokuxhasa: isithombe esifanayo kwifomethi yewebhu yamanje sivame ukuba isithathu sobukhulu ngekhwalithi ebonakalayo efanayo, okudinga ukukwenziwa nganoma yini ebonakala phezulu kwe-fold. I-JFIF ihambisana ne-JPG, ngakho ukubizwa kabusha noma ukushintshana kuyinqubo ye-metadata ngaphezu kokuphindeka kokufaka ikhowudi.

Ingabe ngingenza ngiphinde ngibize isiqephu endaweni yokushintsha JFIF?

Kunzima kakhulu, futhi kufanelekile ukuqonda ukuthi kungani: isithonjana siyisihloko, ngenkathi ama-bytes ngaphakathi kufakwe ngefomethi eyodwa ekhethekile. Ukushintsha igama kwenza ihele igama lakhe lithembisa okuthile okuqukethwe kwayo akusho ukunikela, futhi noma yini evula ihele noma liyiphoqa noma liyifunda kabi. Ukuphela kwephutha elincane yifomethi ezimbili ezikhona ngokusemthethweni ibhokisi elifanayo ngaphansi kwezinhlamvu ezahlukene — futhi ngisho lapho ukuphinda uphinde

Ingabe ngiguqula isibaya esigcwele se JFIF amafayela ngasikhathi sinye?

Nge-akhawunti, yebo — khiphana ndawonye futhi zibekwe njengemisebenzi eyodwa endaweni yokuphathwa ngayinye ngasikhathi sinye, ngezinhlelo ezifanayo ezisetshenziswa ngaphesheya kweqembu futhi izimpendulo zibuyiselwe ndawonye. Ukuguquka okumahhala kusebenza ihele elilodwa ngasikhathi sinye (amathuluzi okuxhuma athatha amabini); i-plan ekhokhelwa yilokho okuvulela ukuqhubekela phambili kweqembu kanye nobukhulu bomgwaqo wefayela ngalinye, okukwenza ukuguquka kwehele lonke le-archive kube lula.