Susa isizinda JPEG

Ukukhanya JPEG images ngokucofoza okulodwa

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Ukulayisha

Indlela yokususa i JPEG isizinda

1 Layisha phezulu i JPEG images oyifunayo ukuyocisha - isiqephu esicacile esibhekene nesizinda esihlukanisiwe sinikeza imodeli okuncane ukucabanga.

2 Lungiselela uma imodeli yokuhlukaniswa icabanga i-alpha matte ye-pixel ngayinye; akukho ukufihla okwenziwa ngesandla.

3 Khangela izingqimba ezibonakalayo, ikakhulukazi izinwele, izinwele, ingilazi kanye nokugqwala kokuhamba, lapho i-matte ezenzakalelayo ibhekana khona.

4 Layisha ngezansi imiphumela njenge-PNG noma i-WebP ukuze ukubukeka okucacile kuhlale kuqhubeka — ugcine ukucisha njenge-JPG kubeka okumhlophe emuva.

Susa isizinda JPEG Imibuzo Evame Ukubuzwa

Ingabe ifomethi yami yomsuka ithinta umgangatho we-matte?

Yebo. I-JPEG iyi-codec efanayo ne-JPG ngaphansi kwesiqiniseko eside — i-DCT pipeline efana, amathebulethi okulinganisela afana, akukho okushintshayo nge-pixels ngegama lefayela. Izinto ezifakiwe zokucindezela ezijikeleze isiqephu ziyilokho okudingayo imodeli yokuhlukaniswa ukuze ihlukanise, ngakho-ke ukungeniswa okuhlanzekile kunikeza isiphetho esihlanzekile.

Ingabe kukhona okuthile okukhethekile ku JPEG okufanele ngicabangele?

Yebo — i.jpeg ne.jpg izixhumanisi ziyi-bitstream efanayo, ngakho akukho okuthile lapha okuzosebenza ngokuhlukile ku-.jpg — igama lefayela kuphela elishintshayo. Lokhu kubukeka kulokho imodeli ebona nokuthi i-output ingathwala.

Ifomu linjani elifanele ligcinwe khona imiphumela?

Omunye one-alpha channel engokoqobo — PNG noma WebP. Ukugcina ukucisha njenge-JPG kususa ukubukeka okucacile futhi kuhlanganise isiqephu esimhlophe, okuzosusa umsebenzi wonke futhi kube yilokho okujwayelekile kakhulu okuzohamba kahle lapha.

Ingabe ngingakwazi ukuphatha isithombe esigcwele?

Yebo. Isithombe ngasinye sihlukaniswe ngokuzimela, ngakho-ke isethulo semikhiqizo eshaywe singasuswa esigabeni esisodwa — okuvame ukuba yisimo, njengoba ukuyenza ngesandla kuyingxenye ehamba kancane ye-catalog eshaywe.

Ingabe ngizosebenzisa Susa isizinda JPEG ku JPEG images amaningi ngasikhathi sinye?

Yebo. Thola isethulo esigcwele endaweni yokulayisha bese zihamba ngokufanayo nezilungiselelo ezifanayo - lokhu kuyisizathu esiyinhloko sokwenza lokhu kubrowser ngaphezu kwefayela elilodwa ngasikhathi sinye kumhleli. Ama-akhawunti amahhala aqhuba ifayela elilodwa ngasikhathi sinye; i-pass lifts that.

Yini ekwenzeke ku-EXIF nedatha yeprofayili yombala?

Ikhamera EXIF (ISO, i-shutter, i-lens, GPS) neprofayili efakwe ngaphakathi ye-ICC idluliselwa ngokuzenzakalela, ngoba ukushiya iprofayili kwenza umbala ushintshe uma ufaka kabusha. Sebenzisa ukhetho lokufihla ukususa i-metadata ngaphambi kokulayisha uma uhlela ukushicilela ifayela.

Ingabe Susa isizinda JPEG ibiza noma yini?

No. Susa isizinda JPEG ikhululekile ngaphandle kwe-akhawunti, akukho uphawu lwamanzi ku-output futhi akukho mnyango wokubhalisa phambi kokulanda. Ukulayisha kususwa ngokuzenzakalela isikhathi esincane ngemuva komsebenzi ophelile.

Ingabe kunesilinganiselo sobukhulu behele ku Susa isizinda JPEG?

Yebo: ama-akhawunti amahhala asebenza ngezithombe kuze kube yi-25 MB ngayinye, ehlanganisa ngokuyinhloko yonke ikhamera JPG nesithombe sefoni; umsebenzi ukwenziwa yi-libjpeg-turbo ne-libwebp, ama-library afanayo umhleli wedesktop uxhumana nawo. Amafayela amakhulu yizinto ezincane ezizokuvimbela ukungena ku-free level, futhi umkhawulo uhele ngalinye hhayi iqembu ngalinye.

Kungani i PNG site i host Susa isizinda JPEG?

PNG.to ifakwe ngaphansi kwefomethi oyisebenzisayo uma ungakwazi ukulahlekelwa yi-pixel: ayilahleki, ikwazi ukubhala, futhi yisinqumo esilungile sezithombe-skrini, izibonisi, umdwebo we-line kanye nanoma yini eneziphetho ezinzima. Isithombe somsebenzi sincane kakhulu isikhashana: abantu bafika ukushintsha ifomu futhi bashiye isithombe esidinga ubukhulu obuhlukile, ubunzima obuhlukile noma ifomu elihlukile. Ukuhamba Susa isizinda JPEG ku-upload pipeline efanayo, ubukhulu obufanayo be-caps kanye ne-akhawunti efanayo yisizathu esigcwele ukuthi ikhona ngaphezu kwe-tab yesi-4.

Yini okufanele ngiyenze ngemiphumela uma i Susa isizinda JPEG iqediwe?

Umguquli kule ndawo uhambisa izithombe ku-PNG, JPG, WebP, GIF ne SVG — okuwusuku oluzothatha isigqibo mayelana nokubukeka okucacile. Lolu hlelo luyisinqumo abantu abaningi befika kuso, futhi ukwenze ngemuva kwe-Susa isizinda JPEG ngaphezu kokungaphambili kusho ukuthi ukuguqulwa kusebenza kusuka kuhele okuphelelwe isikhathi.

Ingabe Susa isizinda JPEG lapha ithuluzi elifanayo lezindawo ezifanayo ezisebenza?

Ama-engine ahlukaniswe — ama-library afanayo, abasebenzi abafanayo, ama-limits afanayo. Okunye okuhlukile yi-advice, futhi i-advice lapha iqala kusuka kuqiniso elilodwa mayelana nefomethi lendawo ibizwa ngemuva: Akukho sinqumlisi somgangatho esingakwazi ukukhohlwa — i-PNG ihamba ngezinyawo ngokucophelela, ngakho into eyodwa kuphela eguqula izindleko zakho yisayizi yefayela. I PNG site icabanga ukuthi i PNG iyindawo efanele yokufinyelela futhi lapho ayikhona, futhi ukuthi uhlolo lungcono kuneqhosha.

Ngidinga i-akhawunti, futhi yini egcinwa?

Akukho akhawunti, futhi akukho okugcinwa: ukuthunyelwa kususwa abasebenzayo ngemuva komsebenzi oqediwe, futhi akukho okuzokwenziwa, okudwetshwe noma okusetshenziswa nganoma yini enye. Ama-akhawunti amahhala akhona ngembali nenani leqembu, hhayi ukufinyelela.