Jikelezisa JPEG

Hlela i-sideways JPEG images

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Ukulayisha

Indlela yokujikelezisa JPEG

1 Layisha phezulu i JPEG images ephuma ngendlela engalungile.

2 Khetha ujikelezo lwesikhashana noma ujikelezo lwesikhashana, noma ubhale i-angle efanele futhi ukhethe umbala wezinhlangothi ezizovela.

3 Sebenzisa ukujikeleza; ama-pixels neflegi yobubanzi bulinganiswe ukuze wonke umbukeli avume ukuthi indlela iphezulu yini.

4 Layisha phezulu ifayela elijikelezayo JPEG.

Jikelezisa JPEG Imibuzo Evame Ukubuzwa

Ingabe ifomu lisho ukuthi ngabe ukujikeleza kungeke kulahleke?

Isebenza. I-JPEG iyi-codec efanayo ne-JPG ngaphansi kwesiqiniseko eside — i-DCT pipeline efana, amathebulethi okulinganisela afana, akukho okushintshayo nge-pixels ngegama lefayela. Le mpahla ilungile ngoba ichaza ukuthi ngabe isigamu sosuku sikhululekile noma izindleko ziphinde zikhodwe.

Ingabe kukhona okuthile okukhethekile ku JPEG okufanele ngikwazi?

Yebo — i.jpeg ne.jpg izixhumanisi ziyi-bitstream efanayo, ngakho akukho okuthile lapha okuzosebenza ngokuhlukile ku-.jpg — igama lefayela kuphela elishintshayo. Le yinto echaza ukuthi kungani ifayela libonakale lilungile kuhlelo oluthile futhi lingekho kulunye.

Kungani ifayela lami libonakale lilungile kufoni yami kodwa lihamba ngakwesobunxele kwezinye izindawo?

Ngenxa yokuthi uhlangothi lugcinwa njenge-EXIF flag hhayi kuma-pixels, futhi akukho okubonayo wonke owenza lokhu. Ukujikeleza lapha kujwayelekile okubini — ama-pixels ne-flag aphele ngokuvumelana, ngakho ihele libukeka lifana kuwo wonke amanye.

Ingabe ngizojikelezisa iqembu lonke ngasikhathi sinye?

Yebo. Ujikelezo olufanayo lusetshenziswa kuwo wonke amafayela olayishe, okuwusizo olukhulu lokuxazulula ifolda yezinqumo noma ikhamera ephumayo, konke okuvela ngendlela engalungile.

Ingabe ngizosebenzisa Jikelezisa 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 Jikelezisa JPEG ibiza noma yini?

No. Jikelezisa 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 Jikelezisa JPEG?

Yebo: ama-akhawunti amahhala asebenza ngezithombe kuze kube yi-5 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 Jikelezisa 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 Jikelezisa 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 Jikelezisa 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-Jikelezisa JPEG ngaphezu kokungaphambili kusho ukuthi ukuguqulwa kusebenza kusuka kuhele okuphelelwe isikhathi.

Ingabe Jikelezisa 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.