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 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.

Indlela eJikelezisa JPEG ejikelezisa ngayo ifayela?

Ngokucacile, ukujikeleza ngezinga le-90 degrees kwenziwa ngaphandle kokulahlekelwa ngokufaka ama-blocks we-DCT - akukho uku-code kabusha, akukho ukulahlekelwa kokukhiqiza; i-angle efanele kuphela edinga ukusatshalaliswa kabusha, ngoba i-pixel grid idinga ukuvuselelwa. Izinhlamvu ezingu-4 kanye nezinhlamvu ezingu-5 ziyisibonelo esijwayelekile futhi zithatha indlela elula kakhulu etholakalayo yefomethi.

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.

Yini engikwazi ukuyifaka ku Jikelezisa JPEG?

Noma yini emndenini we-lossy raster — JPG, JPEG, JFIF ne-WebP — kanye nefomethi engalahleki (PNG, BMP, TIFF) uma ufuna ukuzixhuma ndawonye. Ifomethi ifundwa kusuka kuhele lombhalo ophezulu, hhayi isizukulwane, ngakho isithombe esigcinwe nge-suffix engalungile sizoqhubeka sihamba.

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.

Ingabe Jikelezisa JPEG izonciphisa ukhwalithi ye JPEG images yami?

Umsuka olahlekelwayo usuke umphumela wesikhathi sokungena esingu-1, futhi noma yisiphi isenzo esidinga ukuphinde sikhombise sifaka isithupha. lapho umsebenzi ungakwenziwa khona ngaphandle kokuchofoza i-pixel data sizokwenza lokho endaweni, futhi lapho kungasakwazi khona ukhetha i-quality factor wena ngokwakho ngaphezu kokuthola iphutha eliqinile.

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.

Kungani i EPUB site i host Jikelezisa JPEG?

EPUB.to ifakwe evulekile eBook format - XHTML e zip, reflowable ngokudweba, futhi efundeka ku hardware akukho umuntu ocabanga mayelana layout for. Incwadi iyi-zip egcwele i-markup, izithombe nefonti, ngakho-ke cishe yonke imisebenzi abantu abaletha kuwebhusayithi ye-eBook isebenza kakhulu kusinye sezizinto. Jikelezisa JPEG isebenza ku-upload efanayo ne-akhawunti efanayo njenge-conversions ngoba lapho idingeka khona.

Yini okufanele ngiyenze ngemiphumela uma i Jikelezisa JPEG iqediwe?

Isiguquli kule ndawo sihamba namabhuku phakathi kwe-EPUB, MOBI, AZW3, PDF ne-DOCX, ngakho-ke isihloko siphele kunoma yisiphi isisetshenziswa esizofunda. Ukwenza lokhu ngemuva kwe Jikelezisa JPEG kusho ukuthi ukuguqulwa kwenziwa kusuka kuhlobo olusetshenziswe, hhayi kusuka kulowo ongeke uphinde ulungise.

Ingabe Jikelezisa JPEG lapha ithuluzi elifanayo lezindawo ezifanayo ezisebenza?

Ama-engine ahlukaniswe - i-toolchain efanayo, abasebenzi abafanayo, ama-limits afanayo. Okuthi EPUB site ikhuphule yimbono yokubuyela emuva: iyiphi yalezi misebenzi incwadi ebuyela emuva eqinisweni ixhasa, nokuthi iyiphi kuphela eyenza umbono ku-fixed-layout media ngaphakathi kwayo. Iqala futhi kusuka kuqiniso elinye mayelana nefomethi le site ibizwa ngemuva: incwadi iyi-zip ye-XHTML ene-manifest, ngakho-ke umbhalo ubiza cishe akukho futhi wonke umzamo obalulekile ukhuluma ngezithombe ezifakwe ngaphakathi nefonti eziseduze.

Ngidinga i-akhawunti, futhi yini egcinwa?

Akukho akhawunti, futhi akukho okugcinwa: ukuthunyelwa kususwa abasebenzayo ngemuva komsebenzi oqediwe, akukho okufundwayo futhi akukho okuhlobene. Ama-akhawunti amahhala akhona ngembali nenani leqembu, hhayi ukufinyelela.