Guqula BMP kuya JPG

Guqula Eyakho BMP kuya JPG amafayela kalula

Khetha amafayela akho

*Amafayela asusiwe ngemva kwamahora angu-24

Guqula amafayela afinyelela ku-1 GB mahhala, abasebenzisi be-Pro bangaguqula amafayela afinyelela ku-100 GB; Bhalisa manje

Ukulayisha

Indlela yokuguqula BMP kuya JPG

Isinyathelo 1: Layisha eyakho BMP amafayela usebenzisa inkinobho engenhla noma ngokuhudula bese uphonsa.

Isinyathelo 2: Chofoza inkinobho ethi 'Guqula' ukuze uqale ukuguqulwa.

Isinyathelo 3: Landa i-version yakho JPG amafayela

BMP kuya JPG Imibuzo Evame Ukubuzwa Yokuguqulwa

Ngiguqula kanjani i-BMP ibe yi-JPG ngaphandle kokulahlekelwa ubuhle besithombe?

Layisha phezulu ihele lakho BMP futhi umguquli ufaka ukulungisa umgangatho okwaziyo ifomethi ye JPG. U JPG ongalahleki (PNG, TIFF, BMP) wonke ama-pixel agcinwa; u JPG ongelahleki (JPG, WebP) ungahlela umphumela womgangatho ngaphambi kokufaka ngezansi. I-BMP igcina imiqulu ye-pixel engacindezelwanga ngokuphelele ngesihloko esincane, ngakho-ke kulula ukuyihlukanisa. I-JPG ilahlekelwa yisimo: isithombe siguqulwa nge-DCT, silinganiselwe, futhi sikhonjiswa nge-entropiya, nge-nobhu wobude olawula ukuthi yini elahlekile.

Ingabe ngizolahlekelwa yikhwalithi eningi uma ngisuka ku BMP ngiye ku JPG?

Kukhwalithi engu-80-85 ushintsho alubonakali kude kakhulu kokubheka futhi ifayela liphansi ngo-60-80%. Ukwesaba ukuthi kuyindlela eyodwa: ukulondoloza kabusha i JPG phinda phinda ihlanganise ama-artefacts ngaso sonke isikhathi. Gcina i BMP njengenkosi futhi uphinde udale i JPG kusuka kuyo lapho ufuna ubukhulu obusha. I-BMP ayidingi i-decoder library ngaso sonke isikhathi, ngakho ihlala i-format ephephile yokushintshana yezinhlelo ezifakwe ngaphakathi neWindows ezidala.

Ingabe ukuguqulwa BMP kuya ku JPG kugcina ukubukeka okucacile?

Ukubukeka okucacile kuhlala lapho JPG i-PNG, WebP, TIFF, GIF, noma i-SVG. Ukushintsha ku-JPG kuhlanganiswa isixhumi se-alpha esibhekene nesizinda esimhlophe. Uma ufuna ukubukeka okucacile esinqumweni, bheka ukubonakala okucacile okuqaphelayo JPG endaweni ye JPG=JPG. I-JPG iyisimo se-JPEG esijwayelekile kusukela ngo-1992, futhi ngemuva kweminyaka emithathu ihlala iyisimo esisetshenziswa amakhamera amaningi namanye amawebhusayithi asebenzisa ama-photos.

Ingabe iprofayili yami yombala (sRGB / Adobe RGB / CMYK) izohlala i BMP kuya ku JPG?

Amaprofayili wemibala we-ICC afakwe ngaphakathi afundwa kusuka ku-BMP futhi axhunywe kabusha ku-JPG lapho ifomethi ixhasa khona (JPG, PNG, TIFF, WebP). Amafomethi ngaphandle kwe-inkxaso yeprofayili abuyela emuva ku-sRGB, ogcina amamibala ahambisanayo phakathi kweziboniso eziningi ezimanje.

Yini mayelana ne-EXIF metadata uma uguqula BMP usuka ku-JPG?

Ikhamera EXIF (ISO, i-shutter, i-lens, i-GPS coords) igcinwa ngokuzenzakalela ngesikhathi BMP → JPG lapho amafomethi amabili exhasa i-metadata. Sebenzisa ukhetho lokufihla ukususa i-metadata ngaphambi kokulayisha ngezansi uma ufuna ukuhlanganisa izithombe ngaphandle kokubeka indawo.

Ingabe ngingenza ukuguqulwa kwe-batch kwe-BMP amafayela amaningi ku-JPG ngasikhathi sinye?

Yebo — cindezela amafayela amaningi BMP endaweni yokulayisha futhi sizowabeka emqoka ngokufanayo. Abasebenzisi abamahhala bathola i-100 MB ngefayela ngalinye; iPremium ayinaso isiphetho sefayela ngalinye futhi isebenza nabasebenza ngokufanayo, ngakho-ke isithombe esingu-200 siqediwe ngaphantsi kwemizuzu emibini.

Ingabe BMP kuya ku JPG iqhathaniswa kanjani ne-Photoshop / GIMP ngemisebenzi efanayo?

Ukuguqulwa kwefomethi eqondile sisebenzisa i-libpng / libjpeg-turbo / libwebp / ImageMagick pipes efanayo umhleli wedesktop asebenzisayo, ngekhwalithi yokuphuma efanayo. Ushintsho luyi-batch management ehambisanayo — ama-desktop apps avula ifayela elinye ngasikhathi sinye; sivuma i-batch.

Yini isixazululo sehele lami JPG?

Iphutha ngu 1:1 — JPG yakho igcina ama-pixels ama-dimensions we-BMP. Uma ufuna ukushintsha ubukhulu njengengxenye yokuguqulwa, sebenzisa /resize-image/ ngemuva kokuguqulwa, noma uyibeke nge /image-resize/ utility.

Ingabe i JPG ingaba ncane ngaphandle kwezinto ezibonakalayo ezibonakalayo?

Nge-JPG / WebP, umgangatho 75-85 uvame ukuthola i-JPG 60-80% encane kuna-BMP ngaphandle koshintsho olubonakalayo emgwaqweni wokubuka ojwayelekile. Nge-lossless JPG (PNG, TIFF), cabanga ukulondoloza okuncane — ngokuvamile 5-30% nge-deflate / LZW yokucindezela okungcono. I-JPG icindezela izithombe ezijwayelekile ngokuhle futhi ifundeka nganoma iyiphi idivayisi, isiphequluli nephrinta ekhona.

Ingabe amafayela ami BMP afihlakele ngesikhathi sokuguqulwa?

Yebo — amafayela alayishwe phezulu BMP aqhubekelwa phambili emisebenzini ehlukanisiwe futhi acishwe ngaphakathi kwemizuzu. Asikwazi ukufunda, ukugcina isikhathi eside, noma ukuhlanganisa idatha ye-pixel. Ifasitela eligcwele lokugcinwa libhalwe ku /privacy/.

Ingabe i-BMP kuya ku-JPG isebenza ngezithombe ezinkulu kakhulu (50MP+)?

Yebo, mahhala kuze kube yi-100 MB. I-Premium iphatha izingeniso ezinkulu (300 MB+) kanye ne-exotic per-pixel depths (16-bit PNG, 32-bit float TIFF). Ipayipi lisakaza imibhalo ukuze umsebenzisi wememori alinganise ngokubalwa kwemibhalo, hhayi inani eliphelele le-pixel.

Kungani i-JPG yami eguqulwe ibe mkhulu noma ncane kunalokho engilindele?

A BMP nge-compression ekhona enamandla (JPG elahlekile) ivame ukukhula uma iphinde ikhodwe ku-lossless JPG (PNG, TIFF). A lossless BMP ivame ukuncipha kakhulu uma ihamba ku-JPG / WebP. Isilinganiso sixhomekeke kusithombe esiqukethwe — ama-photos acindezelwa ngendlela eyahlukileyo kunaleyo ye-line art. I-BMP iyinto enkulu—isithombe esingu-12-megapixel siyizi-36 MB—nakho akukho isiphequluli esiyiphatha njengefomethi yewebhu efanele. I-JPG ayinayo ukubukeka okucacile, ikhuphuka kancane ngaso sonke isikhathi lapho igcinwa kabusha, futhi ikhiqiza ukuvala okubonakalayo kumbala ophansi nombhalo oqinile.

BMP

Amafayela e-BMP agcina izithombe ngefomethi ye-bitmap engacindezelwanga, okuholela osayizi bamafayela abakhulu kodwa ikhwalithi ephelele.

JPG

Amafayela we-JPG asebenzisa ukucindezeleka okulahlekile okuhlanganisiwe ngezithombe, okunikeza ubukhulu befayela elincane ngenkathi kugcinwa isixazululo esibonakalayo.