Chifukwa chophimba chophimba ndi imodzi chithunzi mtundu iyi mtundu ndi unambiguously bwino pa. zimene zili pazenera ndi flat mtundu, malemba ndi zosalimba zigawo - moyenera mfundo lossless kusamvana amagwira bwino ntchito ndi photogenic encoder smears - ndi dongosolo loyendetsa amadziwa izo, kotero sikuti akupatsani kusankha. Kusintha chophimba chophimba kuti photogenic mtundu pafupifupi nthawi zonse amachititsa izo onse lalikulu ndi zoipa. BMP amafuna palibe decoder library pa zonse, kotero kuti imakhalabe yotetezeka interchange mtundu kwa embedded machitidwe ndi legacy Windows zofunika.
Nchifukwa chiyani BMP yanga ndi yochuluka kwambiri kuposa chithunzi chimodzi chomwe chili ngati JPG?
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Chifukwa chake, imasunga ma pixel onse, ndipo mu chithunzi cha zithunzi, palibe ma pixel awiri omwe ali ofanana. Kuchepetsa kwa lossless kumagwira ntchito pofuna kuzindikira kubwereza, ndipo mbewu, fumbi ndi ma gradients amapatsa ochepa kwambiri, kotero fayilo imakhala pafupi ndi kukula kwake koyambirira. Pazithunzi, logo kapena line art, kuchepetsa kwachimodzimodzi ndi kochititsa chidwi. BMP ndi gigantic - 12-megapixel chithunzi ndi pafupifupi 36 MB - ndi palibe browser amaona izo monga nzeru webusaiti mtundu.
Nchifukwa chiyani kumbuyo kwakuwonekera kwazithunzi zanga zakhala zofiira mu BMP?
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Chifukwa BMP siyimakhala ndi njira ya alfa yoti ikhalemo. Mtundu uliwonse wa pixel umafunika kukhala ndi mtundu wolimba, choncho kuwala kwazithunzi kumapangidwa motsutsana ndi kumbuyo - kuwala koyambirira - nthawi yomwe fayilo idzalemba. Sichingakhalepo chilichonse chobwezeretsedwanso pambuyo pake. Ngati chithunzi chiyenera kukhala patsamba lowala kapena pazithunzi, sinthani ku mtundu womwe umasunga kuwala kwazithunzi.
Kodi BMP ndi mtundu woyenera wazithunzi zazithunzi ndi line art?
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Yes, for exactly the reason it is the wrong one for photos. Interface chrome, text and hard-edged graphics are large areas of identical color with sharp boundaries, which lossless compression handles efficiently and lossy compression smears — the tell is the faint halo that appears around lettering once a screenshot has been through a photographic encoder. Keep screenshots here and convert only when something downstream insists.
Kupatulapo ngati zinthu zina zimafuna kuti zichotsedwe. Formatiyo imangotsegulidwa, ndipo palibe vuto la kusintha archive yomwe siyikuyambitsa mavuto, koma sikuti ndi komweko kumene ma tool kapena efficiency akuyenda. Kwa chilichonse chokhudzana ndi zinthu zatsopano, formati yatsopano siyimawononga ndalama zowonjezera ndipo imateteza ku mafunso ena a m'tsogolomu zaka zingapo zapitazo.
Kodi ndi vuto kuti BMP ili ndi zaka zoposa makumi atatu?
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Age yekha si vuto - angapo mtundu kuchokera kuti nthawi ndibe bwino, makamaka chifukwa chilichonse chili ndi zaka kuti akwaniritse iwo. Zimene zikukhudza ndi zimene nthawi anaganiza: mavidiyo ang'onoang'ono, mofulumira processors, palibe netiweki, ndi zizindikiro aliyense anafunikabe. Pamene amene anaganizabebe, mtundu ndi bwino. Pamene iwo sachita, kuti ndi chifukwa chosintha. BMP ndi Windows Bitmap, raw raster mtundu anamanga mu Windows kuyambira 1985.
Kodi BMP ndi mtundu wa Microsoft womwe ndimafunikira mapulogalamu a Microsoft?
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Zinachokera ku Microsoft, ndipo ndi komwe kulumikizana kumatha. Palibe pulogalamu yoyamba yosapezeka komanso palibe chilolezo chokhala: mawonekedwe adasindikizidwa, ndi zophweka ngati mtundu wa fayilo umalandira, ndipo zonse zoyendetsa ntchito ndi zida zamakono zawerenga ndi kulemba zaka zambiri. Zomwe mumasintha ndi kukula kwake ndi zinthu, sizopezeka.
Nchifukwa chiyani BMP sichiwonekera mu browser yanga?
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Popeza masamba asakatuli amagwiritsa ntchito mndandanda wafupi wazithunzi zazithunzi ndi BMP ndi kunja kwa izo - zimakhudza kujambula, kusindikiza kapena kusintha ntchito yogwira ntchito kuposa pa web. Fayilo siyowonongeka; siyikhala ndi decoder patsamba. Kusintha kwa mtundu wazithunzi za web-native ndi njira imodzi yosinthira ndipo nthawi zambiri imapangitsa fayilo kukhala yocheperako.
Kodi ndingasinthe dzina la chidacho popeza BMP sichisintha?
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Kwambiri nthawi zonse, ndipo ndi bwino kumvetsa chifukwa chake: kuwonjezeka ndi label, pamene bytes m'maganizo ndi zopangidwa kwa mtundu wina mfundo. Kusintha dzina amapanga fayilo amene dzina lake amalonjeza chinachake za zinthu zake sikuti kubweretsa, ndi zimene amatsegula izo kapena amakana fayilo kapena misreads izo. Mmodzi waukulu kulephera ndi awiri mtundu amene ndi weniweni wofanana wonyamula pansi pa dzina losiyana - ndi ngakhale pamenepo bwino rewrap ndi chitetezo kuposa kusintha dzina.
Kodi ndingasinthe fayilo yonse ya BMP mafayilo m'modzimmodzi?
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Ndi akaunti, yeah - kugwa iwo limodzi ndipo iwo ali mu mnda monga ntchito imodzi kuposa kusamalira mmodzi pa nthawi, ndi zosankha zofanana zogwiritsira ntchito m'magulu ndi zotsatira zobwerera limodzi. Free conversions kuyendetsa imodzi wapamwamba pa nthawi (kuphatikiza zida zimatenga awiri); ndalama plan ndi zimene zimatsegula processing gulu ndi zikuluzikulu per-fayilo malire, amene ndi zimene amachititsa kusintha archive lonse zothandiza.
