Guqula JPG ukuba BMP

Guqula Eyakho JPG ukuba BMP amaxwebhu ngokulula

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*Iifayile zicinyiwe emva kweeyure ezingama-24

Guqula iifayile ezifikelela kwi-1 GB simahla, abasebenzisi bePro banokuguqula iifayile ezifikelela kwi-100 GB; Bhalisa ngoku

Iyalayisha

Indlela yokuguqula JPG ukuba BMP

Inyathelo 1: Layisha eyakho JPG iifayile usebenzisa iqhosha elingasentla okanye ngokutsala nokuwisa.

Inyathelo lesi-2: Cofa iqhosha elithi 'Guqula' ukuze uqalise ukuguqula.

Inyathelo lesi-3: Khuphela i-converted yakho BMP iifayile

JPG ukuba BMP Imibuzo Ebuzwa Rhoqo Ngokuguqula

Ndiyiguqula njani i-JPG ibe yi-BMP ngaphandle kokulahlekelwa umgangatho womfanekiso?

Inceda ukwazi ukuba yintoni ecaleni ngalinye kweli: I-JPG igcina i-8-bit RGB idlula kwi-DCT elahlekile ene-4:2:0 chroma subsampleing ngokumiselweyo, ngoko umbhalo omnyama olungileyo kunye nemiphetho eqinileyo zizinto zokuqala zokuncamathela, ngelixa I-BMP iqulethe imiqolo ye-RGB engacocwanga engacocwanga enesihloko esincinci, ngoko ke ayilahleki ngokupheleleyo kwaye ikhulu — rhoqo 10-20x ubungakanani bomfanekiso ofanayo njenge-PNG. Layisha phezulu ifayile yakho JPG kwaye umguquli wethu usebenzise umgangatho owaziyo wefomati efanelekileyo ye BMP imveliso - kuba injongo engalahlekiyo (PNG, TIFF, BMP, PSD) yonke ipixel igcinwa; kuba injongo elahlekiyo (JPG, WebP, GIF) ungalungisa umgangatho womsebenzi phambi kokukhuphela.

Ingaba uguqulelo JPG ukuya BMP lugcina ukubonakala?

Ukubonakala ngaphaya kuqhubeka xa usiya kwi-PNG, WebP, TIFF, GIF, ICO, PSD okanye SVG. Ukutshintsha kwi-JPG / JPEG / JFIF kugubungela isiqhagamshelanisi se-alpha phantsi kokungasemva omhlophe — ukuba ufuna ukubonakala ngaphaya, cwangcisa ukubonakala ngaphaya-ulwazi lwefomati endaweni ye BMP.

Ingaba iprofayili yam yombala (sRGB / Adobe RGB / CMYK) izakuhlala i JPG ukuya ku BMP?

Iiprofayili zombala we-ICC ezifakelweyo zifundwa ukusuka kumsuka JPG kwaye zidityaniswe kwakhona kwi-BMP i-output apho ifomati ixhasa khona (JPG, PNG, TIFF, WebP, PSD). Iifomati ezingaxhaswanga yiprofayili (GIF, BMP, ICO, SVG) zibuyela kwi-sRGB.

Yintoni malunga ne-EXIF metadata xa uguqula JPG ukuya BMP?

Ikhamera EXIF (ISO, i-shutter, i-lens, i-GPS) igcinwa ngokumiselweyo ngexesha JPG → BMP uguqulo xa zombini iifomati zixhasa i-metadata (JPG, TIFF, WebP, PSD). Sebenzisa ukhetho lobumfihlo ukususa i-metadata phambi kokukhuphela ukuba ufuna ukubonelela ngemifanekiso ngaphandle kolwazi lwendawo.

Ndingaguqula izigidi zeefayili JPG zibe BMP ngaxeshanye?

Ewe - tsala iifayile ezininzi JPG kummandla wokulayisha kwaye sizifake kwifolokhwe ngokuthe ngqo. Abasebenzisi abakhululekileyo bafumana i-100MB ngefayili nganye; iPremium ayinalo icebo lefayili nganye kwaye iqhuba abasebenzi abathe ngqo abaninzi, ngoko ke umfanekiso we-200-iqela ligqiba ngaphantsi kwemizuzu emibini.

I-JPG ithelekiswa njani ne-BMP kwi-Photoshop / i-GIMP kumsebenzi ofanayo?

Ukuguqula ifomati ngokulula siqhuba i libpng / libjpeg- turbo / libwebp / ImageMagick imibhobho efanayo umhleli we desktop esebenzisa, ngemveliso efanayo yobunjani. Utshintsho luyizinto ze desktop ezivula ifayile enye ngexesha; jpg. to ivuma iqela kwaye iqhuba ngokuthe tye.

Yintoni isisombululo kunye nemilinganiselo ekufuneka ifayile yam BMP ithathe?

Ukuziphatha okungagqibekanga ku 1:1 — i BMP yakho yemveliso ineempawu ezifanayo ze-pixels njengemvelaphi JPG. I-ICO yemveliso yi-exception (ivelisa umqulu onamandla okubonisa: 16/32/48/64/128/256). Ukuba ufuna ukuguqula ubungakanani njengenxalenye yokuguqula, sebenzisa /resize/ emva kokuguqula.

Ingaba incinci kangakanani ifayili BMP ngaphandle kwee-artefacts ezibonakalayo?

Kwi JPG / JPEG / WebP, umgangatho we 75-85 ufumana ifayile 60-80% incinane kunendawo yomthombo JPG ngaphandle kotshintsho olubonakalayo kumgama wokubona oqhelekileyo. Kwimiba engekhoyo (PNG, TIFF, BMP), lindele ukonga okuncinci - ngokuqhelekileyo 5-30% nge-deflate / LZW uxinzelelo olungcono.

Ingaba iifayile zam JPG zifihlakeleyo ngexesha lokuguqulwa?

Ewe — iifayili ezilayishwe phezulu JPG ziqhutywa ngabasebenza ngokuzimeleyo kwaye zicinywe kwimizuzu. Asiyi kufunda, ukugcina, okanye ukubonelela ngee-pixel data. Inkqubo yobumfihlo obupheleleyo kunye nefestile yokugcina ibhalwe kwi /privacy/.

Ingaba i-JPG ukuya kwi-BMP iguqulela isebenza kwimifanekiso emikhulu kakhulu (50MP+)?

Ewe, simahla ukuya kwi-100MB. I-Premium iphatha izingeniso ezinkulu (300MB+) kunye nobunzulu obungenakulinganiswa kwi-pixel nganye (16-bit PNG, 32-bit float TIFF, multi-layer PSD). I-pipeline ijikelezisa imiqolo ye-pixel, ngoko ukusetyenziswa kovimba weefayili kulinganiselwa ngobalo lomqolo hayi ngobalo lwe-pixel jikelele.

Kutheni le nto ifayili yam eguqulweyo BMP ikhulu / incinci kuneleyo ndiyifumeneyo?

Ubungakanani bumiselwe ziimodeli ezimbini zokucinezela, hayi ngumguquli. Khumbula ukuba I-JPG igcina i-8-bit RGB idlula kwi-DCT elahlekile ene-4:2:0 chroma subsampleing ngokumiselweyo, ngoko umbhalo omnyama olungileyo kunye nemiphetho eqinileyo zizinto zokuqala zokuncamathela, ngelixa I-BMP iqulethe imiqolo ye-RGB engacocwanga engacocwanga enesihloko esincinci, ngoko ke ayilahleki ngokupheleleyo kwaye ikhulu — rhoqo 10-20x ubungakanani bomfanekiso ofanayo njenge-PNG — ngoko okunzima-ukucinezela JPG kuqhelekileyo UKULUNGISA xa kuphinde kukhowudiwe kwi BMP engalahli, kwaye i-bulky engalahli JPG kuqhelekileyo ikhutshwa ngokuqinileyo isiya kwelinye icala. Imixholo yomfanekiso ibalulekile: iifoto kunye ne-flat line art zicinezela ngokuhlukileyo.

Ndingayisebenzisa ifayili eguqulweyo BMP ngorhwebo?

Ewe. Uguqulelo luguqulelo lwefomati - ilungelo lokushicilela kwizinto eziqulethe umfanekiso lihlala kuwe (okanye umntu ophetheyo kumcebo JPG). Sidibanisa akukho phawu lwamanzi, akukho phawu lwe metadata, kwaye sicela akukho layisensi ngaphezulu kwemveliso.

JPG

Iifayile zeJPG zisebenzisa i-lossy compression eyenzelwe iifoto, zibonelela ngobukhulu obuncinci beefayile ngelixa zigcina umgangatho obonakalayo.

BMP

Iifayile zeBMP zigcina imifanekiso kwifomathi yebitmap engacinezelwanga, nto leyo ebangela ukuba iifayile zibe nkulu kodwa zibe nomgangatho ogqibeleleyo.