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Yini Ikhamera Ye-USB Yokukhanya Okuphansi Futhi Isebenza Kanjani?
Kwadalwa ngo 03.19
Wake wake wajoyina ikholi yevidiyo ebusuku kakhulu kodwa wathola ikhamera yakho ye-USB ikwenza ube yisithombe esingacacile, esinokudla okuningi? Noma uzame ukuqapha ikhaya lakho ebusuku, ukuze uthole isikrini esimnyama esinezithunzi ezibuthakathaka ezingakutsheli lutho? Uma kunjalo, awuwedwa—futhi cishe uhlangabezane nemikhawulo yekhamera ejwayelekile ye-USB ezindaweni ezinokukhanya okuphansi. Kodwa kuthiwani uma kukhona isixazululo esivumela ikhamera yakho ye-USB ukuthi isebenze kahle emakamelweni abuthakathaka, ebusuku obubandayo, noma ngisho ebumnyameni obuseduze njengoba yenza ekukhanyeni okukhanyayo? Kulapho khonaikhamera ye-USB engabona ekukhanyeni okuphansi iyavela.
Amakhamera we-USB angajwayelekileyo anobunzima lapho ukukhanya kunganele, amakhamera we-USB angaphansi kokukhanya enzelwe ukusebenza kahle ezimweni zokukhanya eziyinselele—kusukela emahhovisi asekhaya anemibala emnyama namakhefi athokomele kuya ezindaweni zokuphepha ebusuku kanye nezindawo zezimboni ezinokukhanya okuncane okungaphezulu. Akuyona nje amakhamera "angcono"; kuyinhlanganisela ehlakaniphile yezinto ezintsha zehadiwe kanye nokuthuthukiswa kwesoftware, eyenzelwe ukuguqula ukukhanya okubuthakathaka kube izithombe ezicacile, ezisebenzisekayo ngaphandle kokungcola, ukudideka, noma ukuhlanekezelwa kombala okuhlasele amamodeli ajwayelekile. Kulo mhlahlandlela, sizochaza amakhamera we-USB angaphansi kokukhanya: ukuthi ayini, enza kanjani umlingo wawo, nokuthi kungani eba yisidingo sokusetshenziswa komuntu siqu kanye nezingcweti.
Ake siqale ngezisekelo—ngoba ukuqonda ukuthi yini eyenza ikhamera ye-USB ebukeka kahle ebumnyameni kuqala kudinga ukwazi ukuthi ayiyona ini. Ikhamera ejwayelekile ye-USB (njengaleyo eyakhelwe kukhompyutha yakho ephathekayo noma ikhamera yedeskithophu eshibhile) ithembele ekukhanyeni okwanele ukuze ithwebule izithombe ezicacile. Inzwa yayo yakhelwe ukusebenza kahle ezindaweni ezikhanyisiwe, futhi lapho ukukhanya kwehlela ngaphansi komkhawulo othile (ngokuvamile cishe ku-10-20 lux, okubuthuntu kune-lamp ejwayelekile yekamelo lokuhlala), iyazilungisa ngokukhuphula i-ISO yayo (ukuzwela ekukhanyeni). Lokhu kuholela ezinkingeni ezimbili ezinkulu: umsindo (lezo zimabala ezicasulayo) kanye nesivinini esihamba kancane sesivalo (esibangela ukungacaci uma kukhona okuhambayo, okuhlanganisa ubuso bakho ngesikhathi socingo).
Ikhamera ye-USB enokukhanya okuphansi ixazulula lokhu ngokucabanga kabusha zonke izingxenye zekhamera ye-USB evamile—kusukela enzwa kuya elensini kuya kusofthiwe—nokusebenza ekukhanyeni okuphansi njengento ebaluleke kakhulu. Akusho nje ukuthi "ukubona ebumnyameni"; kumayelana nokubona ngokucacile, ngemibala enembayo nokuhlanekezela okuncane, noma ngabe ukukhanya kuyinto enqabile. Futhi ngoba iyikhamera ye-USB, igcina ukusebenziseka kalula kwe-plug-and-play esithembele kuyo sonke—akukho ukuxhuma okuyinkimbinkimbi, akukho mithombo yamandla eyengeziwe, ukuxhumana nje okulula kwe-USB kukhompyutha yakho ephathekayo, eyedeskithophu, noma i-Raspberry Pi.
Yini Eqondile Ikhamera Ye-USB Engabona Ekukhanyeni Okuphansi?
Ngokuyisisekelo, ikhamera ye-USB engabona ekukhanyeni okuphansi iyidivayisi yesithombe exhunywe nge-USB eyenziwe yaba ngeyokuthwebula izithombe namavidiyo asezingeni eliphezulu ezindaweni ezinokukhanya okuphansi (ngokuvamile kusuka ku-0.0001 lux kuya ku-10 lux). Ukukubeka ngombono: i-lux eyi-1 ukukhanya kwesibani esingamamitha angu-1 kude, i-lux engu-0.01 ukukhanya kwenyanga egcwele ebusuku obucacile, kanti i-lux engu-0.0001 cishe ubumnyama obuphelele—kodwa amakhamera amaningi aphezulu we-USB angabona ekukhanyeni okuphansi asengakhiqiza izithombe ezisebenzisekayo, ngisho nezicacile, kulelo zinga.
Kodwa nansi into ebalulekile: ikhamera ye-USB ekwazi ukuthatha izithombe ekukhanyeni okuphansi ayiyona nje "ikhamera evamile enenzwa engcono." Kuyisistimu lapho ingxenye ngayinye isebenza ngokuvumelana ukuze kuthathwe ukukhanya okuningi, kuncishiswe umsindo, futhi kunikezwe ukusebenza okuzinzile. Ngokungafani namakhamera e-infrared (IR) akhiqiza izithombe ezimnyama nezimhlophe noma adinga izibani ezengeziwe ze-IR, amakhamera amaningi e-USB angaphezulu angakwazi ukuthatha izithombe zemibala egcwele ekukhanyeni okuphansi—ngenxa yobuchwepheshe obuthuthukisiwe bezinzwa nama-algorithms okucubungula izithombe. Lokhu kuyinto eshintsha imidlalo ezinhlelweni lapho umbala ubalulekile, njengokukhomba izingubo zomuntu, ukubona imibala yemikhiqizo endaweni yokugcina impahla emnyama, noma ukugcina ukubukeka kwemvelo phakathi nezingxoxo zevidiyo zasebusuku kakhulu.
Enye yezici ezichazayo zamakhamera e-USB ezikhanyayo kancane ukuhambisana kwazo. Zilandela i-UVC (USB Video Class) standard, okusho ukuthi zisebenza kahle ne-Windows, macOS, Linux, Android, kanye nezinsiza ze-iOS ngaphandle kwesidingo samadrayivu akhethekile—bese uzifaka nje kwi-USB port, zikulungele ukusetshenziswa.
Ziphinde zitholakale ngezinga lezimo ezahlukene, kusukela kumamojuli amancane angahlanganiswa kumadroni, amarobhothi, noma ama-AGV (Automated Guided Vehicles) kuye kumakhamera e-webi azimele enzelwe ukuxoxisana ngevidiyo nokuphepha kwasekhaya. Ezinye zize zibe nomklamo wokuhlukana komzimba, nebhodi yenzwa ehlukile kanye nebhodi eyinhloko, okuvumela inzwa encane ukuthi ifakwe ezindaweni ezincane kanti ibhodi eyinhloko ibekwe endaweni elula ukufinyelela ukuze kukhishwe ukushisa nokulungiswa.
Isebenza kanjani ikhamera ye-USB ekhanyisa kancane? (Inqubo yezinyathelo ezine)
Umlingo wamakhamera we-USB angakwazi ukuthatha izithombe ekukhanyeni okuphansi utholakala ekubeni kwawo okwazi ukuthatha nokucubungula amanani amancane kakhulu okukhanya ngempumelelo—ngaphezu kokwenza kahle kwamanye amakhamera ajwayelekile. Ake sihlaziye indlela asebenza ngayo isinyathelo ngesinyathelo, ukuze ukwazi ukuqonda kahle ukuthi ashintsha kanjani ubumnyama bube ukucaca. Sizogcina ubuchwepheshe obunzima bungene kancane, kodwa futhi sizongena ngokwanele ukuze sikukhombise ukuthi yini eyenza la makhamera abe akhethekile ngempela.
Isinyathelo 1: Ukuthathwa Kokukhanya – Ilensi kanye ne-Aperture
Yonke ikhamera iqala ngokuqhakaza, futhi amakhamera e-USB anokuqhakaza okuphansi awahluka. Ingxenye yokuqala eyenza umehluko iwukhaladi—ikakhulukazi, ukuvulwa kwayo. Ukuvulwa kukhaladi kuyivula ekhaladini evumela ukukhanya ukuthi kungene ekhamerani, futhi kukalwa ngenombolo ye-f (isb., f/1.2, f/2.0). Njengoba inombolo ye-f iphansi, ukuvulwa kukhaladi kuba kubanzi, futhi ukukhanya okuningi kungatholwa.
Amakhamera e-USB ajwayelekile ngokuvamile anokuvulwa okuncane (cishe f/2.8 kuya ku-f/4.0), okunciphisa inani lokukhanya elingena esensori. Nokho, amakhamera e-USB anokuqhakaza okuphansi asebenzisa amakhaladi anokuvulwa okubanzi (ngokuvamile f/1.0 kuya ku-f/1.8) ukuze kukhuliswe ukutholwa kokukhanya.
Ilensi enezinga le-f/1.2 ivumela ukukhanya okungu-4x kakhulu kune lensi enezinga le-f/2.4—kwanele ukuguqula isithombe esinokukhanya okuncane, esimnyama sibe sobala ezimeni ezimnyama. Amakhamera e-USB anokukhanya okuphansi nawo asebenzisa ama-lensi e-M12 aphezulu anokuphazamiseka okuphansi (okungaphansi kuka-1%), eqinisekisa ukuthi ukukhanya okuqoshwe kubukhali futhi kuyiqiniso empilweni, noma ngabe kumasango amakhulu.
Isinyathelo 2: Ukuguqulwa Kokukhanya – I-Sensor (Inhliziyo Yokusebenza Kokukhanya Okuphansi)
Uma ukukhanya kudlula kwi-lensi, kufika ku-sensor yesithombe sekhamera—ingxenye eguqula ukukhanya ibe izimpawu zikagesi. Lapha amakhamera e-USB anokukhanya okuphansi akhanya kakhulu (ukuhlekisa okukhuluma). Amakhamera e-USB ajwayelekile asebenzisa ama-sensor e-CMOS ajwayelekile angathathi hlangothi kakhulu ekukhanyeni. Amakhamera e-USB anokukhanya okuphansi, ngokuphambene, asebenzisa ama-sensor e-CMOS anokuthinteka okuphezulu—avame ukubizwa ngokuthi ama-sensor e-“starlight”—aklanyelwe ikakhulukazi ukuthola noma yiziphi izitho ezincane kakhulu.
Izici ezimbili ezibalulekile ezenza lezi zinzwa zigqame: usayizi we-pixel nokusebenza kwe-quantum. Usayizi we-pixel ubukhulu be-pixel ngayinye ebona ukukhanya enzwa (elinganiswa ngama-micrometers, μm). Amaphikseli amakhulu angabamba ukukhanya okuningi kunamancane—cabanga ngawo njengezimbiza ezinkulu ezibamba imvula eningi. Amakhamera amaningi we-USB angabona ekukhanyeni okuphansi asebenzisa izinzwa ezinobukhulu be-pixel obungu-2.9 μm noma obukhulu, uma kuqhathaniswa no-1.4-2.0 μm kumakhamera e-webcam ajwayelekile.
Ukusebenza kwe-Quantum, ngaleso sikhathi, kuyiphesenti lamaphothoni okukhanya anenzwa inzwa ibe izimpawu zikagesi. Izinzwa ezisezingeni eliphezulu zezinkanyezi (njenge-STARVIS™ IMX291 noma i-IMX323 kaSony) zinomsebenzi we-quantum ongama-70% noma ngaphezulu, okusho ukuthi azichithi ukukhanya okuningi—okubalulekile lapho ukukhanya kunqala.
Amanye amakhamera we-USB aphansi okukhanya nawo asebenzisa izinza ezikhanyiswe ngemuva (BSI), eziguqula isakhiwo senzwa ukubeka ungqimba oluzwela ukukhanya eduze nendlela. Lokhu kunciphisa ukulahleka kokukhanya futhi kuthuthukisa ukuzwela, ikakhulukazi ekukhanyeni okuphansi. Umphumela? Inzwa ingathatha ukukhanya okuningi ngomsindo omncane, ngisho nasebumnyameni obuseduze.
Isinyathelo 3: Ukunciphisa Umsindo – Ukuguqula Okusanhlamvu Kube Ukucaca
Noma ngabe kukhona i-aperture ebanzi kanye ne-sensor enokuzwela okuphezulu, izimo zokukhanya okuphansi zisazokwethula umsindo othile—amachashaza amancane, angahleliwe enza izithombe zibukeke njengezihlabayo. Amakhamera ajwayelekile akwenza kabi lokhu, avame ukubangela izithombe ezibuthuntu noma ezicashelwe lapho i-ISO ikhuphuka. Amakhamera e-USB akhanyayo axazulula lokhu ngobuchwepheshe obuthuthukisiwe bokunciphisa umsindo, kokubili ku-hardware naku-software.
Ukunciphisa umsindo kwe-hardware kuqala nge-sensor uqobo, eyenzelwe ukunciphisa i-"dark current"—umsindo kagesi owenziwa yi-sensor noma ngabe akukho ukukhanya okukhona. Ukunciphisa umsindo kwe-software, phakathi naleso sikhathi, kusebenzisa ama-algorithms ahlakaniphile (njengokunciphisa umsindo we-3D) ukuhlaziya isithombe futhi kuhlukanise phakathi kwemininingwane yangempela nomsindo.
Lezi zibalo zisebenza ngokufanisa izithombe eziningi zevidiyo, zibona imininingwane ehambisanayo (njengobuso bomuntu) futhi zisuse umsindo ongahleliwe (izindawo ezinezigqoko). Ngokungafani nokunciphisa umsindo okunamandla (okwenza isithombe sonke sibe nesithunzi), amakhamera e-USB angaphansi kokukhanya asebenzisa ukunciphisa umsindo okuguquguqukayo—ugcina ubukhali ngenkathi ususa umsindo. Yingakho ungathola izithombe ezicacile, ezinemininingwane ngisho nasezindaweni ezimnyama kakhulu ngaphandle kokubukeka okufana “nepulasitiki” okuvela ekucubunguleni ngokweqile.
Isinyathelo 4: Ukudluliswa Kwemininingwane – Isivinini Nokusebenza Kahle kwe-USB
Lapho inzwa isithwebula ukukhanya futhi ikhamera icubungula isithombe (inciphisa umsindo, ilungisa imibala), isinyathelo sokugcina ukudlulisela idatha yesithombe kudivayisi yakho nge-USB connection. Kulapho ingxenye ye-“USB” yekhamera ye-USB engaphansi kokukhanya iba yinhloko—ikakhulukazi ezinhlelweni zevidiyo.
Izikhamera eziningi ze-USB ezisebenza kahle ekukhanyeni okuphansi zisebenzisa uxhumano lwe-USB 2.0 noma i-USB 3.0. I-USB 3.0 inikeza isivinini sokudlulisa esingafika ku-5 Gbps, esanele ukudlulisa ividiyo ye-high-definition (1080p noma 4K) ngesikhathi sangempela ngaphandle kokubambezeleka.
Lokhu kubalulekile ezinhlelweni ezifana ne-video conferencing, i-live streaming, noma ukuqapha ezokuphepha ngesikhathi sangempela, lapho ukubambezeleka kungenza ikhamera ingasebenzi. Ngaphezu kwalokho, izikhamera ze-USB ezisebenza kahle ekukhanyeni okuphansi zisekela izindlela eziningi zokufaka amakhodi evidiyo (H.265, H.264, MJPEG, YUY2) ukulinganisa ikhwalithi kanye ne-bandwidth.
I-H.265, ngokwesibonelo, ihlehlisa ividiyo kahle, yehlisa izidingo ze-bandwidth nokugcina, ngenkathi igcina ikhwalithi ephezulu—ilungele ukuqapha okukude. I-MJPEG, ngakolunye uhlangothi, iqinisekisa ukuthi ifremu ngayinye izimele futhi i-high-definition, ilungele izinhlelo zokusebenza ze-computer vision ezifana nokubona ubuso noma ukuthola ukunyakaza.
Umehluko Obalulekile Phakathi Kwezikhamera Ze-USB Ezisebenza Kahle Ekukhanyeni Okuphansi Nezivamile Ze-USB
Ukubona kahle amakhamera e-USB angasebenza ekukhanyeni okuphansi, kuyasiza ukuwaqhathanisa ngqo namakhamera e-USB ajwayelekile esiwasebenzisa nsuku zonke. Nansi incazelo esheshayo yezinto ezihlukile ezibalulekile:
• Ukuzwela ekukhanyeni: Amakhamera e-USB ajwayelekile ayahlupheka uma kukhanya kungaphansi kuka-10 lux; amakhamera e-USB angasebenza ekukhanyeni okuphansi asebenza kahle kusuka ku-0.0001 lux kuya ku-10 lux (futhi ngezinye izikhathi angaphansi). Amanye angakwazi ngisho nokuthatha izithombe ezinemibala egcwele ku-0.001 lux—ezimweni ezifana nokukhanya kwenyanga.
• Ikhwalithi ye-Sensor: Amakhamera ajwayelekile asebenzisa izinzwa ezincane, ezingazweli kakhulu; amakhamera angasebenza ekukhanyeni okuphansi asebenzisa izinzwa ezinkulu, ezizwela kakhulu ze-starlight CMOS (isibonelo, i-Sony IMX291, IMX323) ezine-quantum efficiency ephezulu.
• Ilensi: Amakhamera ajwayelekile anama-aperture amancane (f/2.8+); amakhamera angasebenza ekukhanyeni okuphansi anama-aperture abanzi (f/1.0-f/1.8) ukuze athole ukukhanya okuningi.
• Ukunciphisa Umsindo: Amakhamera ajwayelekile asebenzisa ukunciphisa umsindo okuyisisekelo (okuvame ukubangela ukuba izithombe zibe yimfihlakalo); amakhamera angasebenza ekukhanyeni okuphansi asebenzisa ukunciphisa umsindo okuthuthukile kwe-3D nama-algorithm azivumelanisayo ukuze agcine imininingwane ngenkathi eqeda ukungcola.
• Ukusebenza Kombala: Amakhamera ajwayelekile ashintshela kumnyama-nemhlophe noma anciphise imibala ekukhanyeni okuphansi; amakhamera okukhanya okuphansi agcina ukuthwebula imibala egcwele, ngenxa yezinzwa ezithuthukisiwe nobuchwepheshe bokucubungula.
Izicelo Zangempela Zamakhamera E-USB Okukhanya Okuphansi
Amakhamera e-USB okukhanya okuphansi akuwona nje "into enhle ukuba nayo"—abalulekile ezinhlobonhlobo zezicelo lapho ukukhanya kungafaneleki. Nansi eminye yemisebenzi ejwayelekile, eminingi yayo ongase ungayicabangi:
1. Izingqungquthela Zevidiyo kanye Nomsebenzi Okude
Abantu abaningi kunanini ngaphambili basebenza ekhaya, futhi akuwo wonke amahhovisi asekhaya anokukhanya okuphelele. I-webcam ye-USB yokukhanya okuphansi iqinisekisa ukuthi ubukeka njengochwepheshe phakathi nezingcingo zasebusuku, imihlangano yasekuseni kakhulu, noma izingcingo ezivela egumbini lokuhlala elikhanyiswe kancane. Akusekho ukudubula okugqamile, okungathandeki—ividiyo ecacile, ebukeka njengemvelo nje esiza ukuthi uxhumane kangcono nozakwenu.
2. Ukuphepha Ekhaya kanye Nebhizinisi Elincane
Amakhamera okuphepha endabuko avame ukudinga izibani ze-IR ukuze abone ebusuku, okuholela kumavidiyo amnyama namhlophe. Amakhamera e-USB anokukhanya okuphansi abamba amavidiyo anemibala egcwele ebusuku, okwenza kube lula ukubona abangeneleli, abashayeli bezimpahla, noma izilwane ezifuywayo. Usayizi wawo omncane futhi ubenza kube lula ukufakwa ezindaweni ezincane, njengezinsimbi zomnyango, amafasitela, noma amagaraji.
3. Umbono Wezimboni Nezemishini
Izimboni, izindawo zokugcina izimpahla, kanye nezindawo zokukhiqiza ngokuvamile ziba nokukhanya okubuthakathaka (ukonga amandla noma ngenxa yohlobo lomsebenzi). Amakhamera e-USB akhanyisa kancane asetshenziselwa ukulawula ikhwalithi (ukuhlola imikhiqizo ezindaweni ezimnyama), ukuzulazula kwe-AGV (kusiza amarobhothi ukuthi ahambe ngokuphepha ekukhanyeni okubuthakathaka), kanye nokuqapha imishini (ukugcina iso ezintweni ezisekhoneni elimnyama).
Umklamo wabo omncane, ohlangene wenza kube lula ukuwuhlanganisa nezinhlelo ezikhona, futhi ukuhambisana kwabo ne-UVC kuqinisekisa ukuthi zisebenza nezinhlelo zezimboni.
4. Ukuthwebula Izithombe Kwama-Drone Nerobhothi
Ama-drone asetshenziselwa ukuqapha ebusuku, ukuthwebula izithombe zezilwane zasendle, noma imishini yokufuna nokusindisa adinga amakhamera angasebenza ekukhanyeni okubuthakathaka. Amamojuli ekhamera e-USB akhanyisa kancane alula futhi ayancipha, okwenza alungele ama-drone namarobhothi.
Angakwazi ukuthwebula izithombe ezicacile noma ngisho ebusuku noma ebumnyameni obuseduze, asize abaqhubi bama-drone ukuthi bazulazule futhi baqoqe idatha lapho amakhamera ajwayelekile angasehluleka khona.
5. Izicelo Zezokwelapha Nezobuchwepheshe
Ezindaweni zezokwelapha, amakhamera e-USB anokukhanya okuphansi asetshenziselwa ama-endoscope (lapho ukukhanya kukhawulelwe ngaphakathi emzimbeni) nokuthwebula izithombe ezincane kakhulu (lapho ukukhanya okukhanyayo kungalimaza izampula). Ocwaningweni lwesayensi, asetshenziselwa ukuthwebula imisebenzi yezilwane zasendle ebusuku noma ukuqapha izimo zemvelo ezindaweni ezinokukhanya okuphansi.
Ungakhetha Kanjani Ikhamera Ye-USB Enokukhanya Okuphansi Elungile
Uma usulungele ukuthuthukisa uye ekhamereni ye-USB enokukhanya okuphansi, kunezici ezimbalwa ezibalulekile okufanele uzicabangele ukuze uqiniseke ukuthi uthola efanelekayo ezidingweni zakho. Nansi ongayibheka:
• Ukukhanya Okuncane Kakhulu: Bheka ikhamera enokukhanya okuncane kakhulu okungu-0.01 lux noma ngaphansi (uma inombolo incane, iyasebenza kangcono ekukhanyeni okuphansi). Amamodeli aphezulu afika ku-0.0001 lux.
• Uhlobo Lwezwa: Khetha ikhamera enenzwa ye-CMOS ye-starlight (isibonelo, i-Sony STARVIS™) ukuze uthole ukuzwela okungcono kakhulu ekukhanyeni okuphansi. Hlola usayizi wephikseli (2.9 μm noma ngaphezulu kulungile) kanye nokusebenza kwe-quantum.
• I-Aperture: Khetha ikhamera ene-aperture ebanzi (f/1.2 noma ngaphansi) ukuze wandise ukuthathwa kokukhanya.
• Isinqumo kanye ne-Frame Rate: Ququzela izidingo zakho—i-4MP (2688x1520@30fps) ilungele ukusetshenziswa kwansuku zonke, kanti i-8MP (4K, 3840×2160@25fps) ingcono ezinhlelweni zokusebenza zobuchwepheshe njengokuphepha noma ukuhlolwa kwezimboni.
• Ukuhambisana: Qinisekisa ukuthi ikhamera iyahambisana ne-UVC ukuze isetshenziswe kalula ne-device yakho (Windows, macOS, Linux, njll.).
• Izici Ezengeziwe: Bheka izici ezifana nokunciphisa umsindo kwe-3D, izinketho eziningi zokuhlela ividiyo, kanye nomklamo ophathekayo noma ohlukanisiwe uma udinga ukuhlanganisa ekhaladini elincane.
Imicabango Yokugcina: Kungani Amakhamera e-USB Ezikhanyayo Kancane Engashintsha Umjikelezo Wokusebenza
Amakhamera e-USB ezikhanyayo kancane awanalo nje uthuthukiso oluvela kumakhamera ajwayelekile—ngokuyinhloko, ayisixazululo senkinga evamile: indlela yokuthola izithombe ezicacile, ezisebenzisekayo nevidiyo lapho ukukhanya kuncane. Ngokuhlanganisa ama-lenses anendawo evulekile, ama-sensors anokuthinteka okuphezulu, ukunciphisa umsindo okuqhubekayo, kanye nokuthokozisa kwe-USB, avule amathuba amasha emsebenzini ophakathi, ukuphepha, ukuzenzakalela kwezimboni, nokuningi.
Noma ungumsebenzi okude ukhathele izingcingo zevidiyo ezibonakala kabi, umnikazi webhizinisi elincane ofuna ukuvikela isitolo sakho ebusuku, noma unjiniyela ohlobanisa amakhamera nemishini yezimboni, ikhamera ye-USB ekhanyisa kancane inikeza ukusebenza kanye nokulula okudingayo. Futhi njengoba ubuchwepheshe buqhubeka nokuthuthuka, lawa makhamera ayakhuphuka kuphela—enikeza isinqumo esiphakeme, ukuzwela okungcono ekukhanyeni okuphansi, nezinye izici ngamanani angabizi. Ngakho-ke ngesikhathi esilandelayo uzithola ulwa nesithombe se-USB esibonakala kabi, esimnyama ekukhanyeni okuphansi, khumbula: kunesinye isixazululo esingcono. Amakhamera we-USB akhanyisa kancane akakuvumeli nje ukuthi ubone ebumnyameni—akuvumela ukuthi ubone ngokucacile, ukuze ungaphuthelwa isikhathi, noma ngabe ukukhanya kuminyene kangakanani.
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