2Sankhani mmene zovuta kupweteka: quality kapena bitrate zofuna, ndi optionally ochepa kutalika ngati kukula ndi zofunika kwambiri kwa inu kuposa deta.
3Kuyamba ntchito ndi kulola ogwira ntchito re-kupaka wapamwamba; wanu oyambirira si nthawi zonse anasintha m'malo.
4Poyerekeza ndi kukula kwatsopano ndi mtundu wachibadwa, kenako ndikutsitsa fayilo ya BMP yosinthidwa.
Kuchepetsa BMP Mafunso Ofala
Kodi Kuchepetsa BMP imapanga fayilo yaying'ono?
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Concretely, 1.1. Nothing about it depends on you installing software: the job runs server-side and hands back a finished file.
Kodi ndi ziti zosafunikira zomwe fayilo yanga idzalandira?
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Zithunzi zazing'ono, zipatso za film ndi kulumikizana kwa sensor noise zimatsutsana ndi kulumikizana; mtundu woyera, malo akuluakulu, kulumikizana kwa line art ndi kulumikizana kwa mawu. Muyenera kuyembekezera kuchepetsa kwakukulu pazithunzi zazithunzi kapena logo ndi kuchepetsa kwachilendo pazithunzi zogwira ntchito.
Kodi mtundu wa fayilo yanga umasintha kuchuluka kwa ndalama zomwe ndingapulumutse?
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Chotero kwambiri. BMP ndi mwamsanga raw uncompressed RGB mnda ndi header ochepa, kotero ndi bwino lossless ndi zochuluka - nthawi zambiri 10-20x kukula kwa chithunzi chimodzimodzi monga PNG. Izi zimatsimikizira kuti pali ma headroom omwe alipo komanso ngati kupulumutsa kumakuwononga chilichonse m'chilungamo.
Kodi pali chinachake chokhacho cha BMP chomwe ndingadziwepo mukadzaza?
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Yes — chifukwa palibe chomwe chimakonzedwa, BMP ndi kosavuta kuwerenga ndi kusintha koma kuwononga kutsitsa, ndipo sichibweretsa metadata kuti izikhala. Ndikofunika kudziwa kuti musanayambe kulemba pazomwe mungafunensonso.
Kodi ndi chiyani cholakwika chofala kwambiri pamene mukutsitsa BMP images?
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Kuzizira wapamwamba chimodzimodzi mobwerezabwereza. Kawirikawiri pa lossy mtundu ndi chitukuko chatsopano cha kuwonongeka ndi kupulumutsa kuchepetsa pamene kuwonongeka kumawonjezeka. Pitani kuchokera ku asalowe ku cholinga chanu m'njira imodzi, ndipo kusunga asalowe.
Kodi ndikufuna chiyani, ndipo ndingayang'ane bwanji kusiyana kwa ndalamazo?
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Fayilo imodzi yozizira pa input, pa mlingo wabwino womwe mumasankha kuposa woyamba. Ngati zotsatirazo sizingatheke, kuchepetsa kukula kwa pixels kudzakhala kothandiza kuposa kuchepetsa mlingo wabwino.
Kodi ndingapeze chiyani pa Kuchepetsa BMP?
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PNG, BMP ndi TIFF ndi mafomu a raster osatha omwe amagwira ntchito moyenera, ndipo mabungwe othamanga (JPG, WebP, GIF) amagwira ntchitonso ngati mukufuna kuwagwiritsa ntchito pamodzi. TIFFs osiyanasiyana amapezeka ndikuyang'aniridwa patsamba ndi tsamba.
Kodi pali malire a kukula kwa fayilo pa Kuchepetsa BMP?
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Yesani: maakaunti aulere amapanga zithunzi mpaka 5 MB; mabungwe osatha kuwononga amawononga malirewo mofulumira kuposa zithunzi, chifukwa palibe chomwe chimatulutsidwabe. Ngati muli pamwamba pa izi, kusinthidwa kwa PNG kumayamba nthawi zambiri kumatha kukwanira - BMP ndi nthawi yambiri ya zaka makumi asanu ndi awiri ndi kukula kwa chithunzi chofanana ndi PNG.
Kodi Kuchepetsa BMP idzachepetsa mtundu wa BMP images wanga?
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Sichoncho. A lossless kuchokera round-trips bit-exactly, kotero ngati inu mosabisa akufuna kwa lossy kutulutsa mtundu pixels amene anabwerera ndi pixels amene anapita mu. Izi ndi chifukwa chakuti zonse kutsatira ntchito mu izi banja pamene inu mwakhala kusinthira.
Yes — kutsitsa set ndi iwo kusonkhana mofanana pansi pa imodzi set of settings. Lossless owona ndi zikuluzikulu, kotero lalikulu gulu ndi kugwirizana ndi kutsitsa wanu galimoto kuposa ndi kusonkhana yekha.
Kodi alpha channel kupulumuka?
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Ndiko. PNG ndi TIFF zimagwiritsa ntchito ma channels a 8-bit alpha ndipo zimasungana mpaka pamapeto. Zimakonzedwa ngati mwasankha mtundu womwe sumakhala ndi ma channels alpha, ndipo m'njira imeneyi ma pixels owoneka bwino amaphatikizidwa pa mthunzi wobiriwira.
