Qaphela i-RGB Light of the Skin Analyzer

Qaphela ukukhanya kwe-RGB kwe-Isihlaziyi Sesikhumba

I-RGB yakhelwe ngesimiso sokukhanya kombala. Ngokwemibono yabantu abavamile, indlela yayo yokuxuba imibala ifana nezibani ezibomvu, eziluhlaza okotshani, neziluhlaza okwesibhakabhaka. Uma izibani zazo zihlangana, imibala iyaxubana, kodwa ukukhanya kulingana nesamba sokukhanya kwalokhu okubili, lapho kuhlanganiswa kakhulu ukukhanya kuyanda, okungukuthi, ukuxuba okungeziwe.

Ukuze kubekwe ukukhanya okubomvu, okuluhlaza okotshani nokuluhlaza okwesibhakabhaka, indawo ekhanyayo kakhulu yemibala emithathu ephakathi imhlophe, kanti izici zokuxuba okungeziwe: lapho kubekwe ukukhanya okuningi, kulapho kukhanya khona.

Isiteshi ngasinye semibala emithathu, obomvu, oluhlaza okotshani, noluhlaza okwesibhakabhaka, sihlukaniswe amazinga okukhanya angu-256. Ku-0, "ukukhanya" kubuthakathaka kakhulu - kuyacinywa, kanti ku-255, "ukukhanya" kugqame kakhulu. Uma amanani e-grayscale enemibala emithathu afana, kukhiqizwa imibala empunga enamanani ahlukene e-grayscale, okungukuthi, uma i-grayscale enemibala emithathu ingu-0 yonke, kuba yithoni emnyama kakhulu; uma i-grayscale enemibala emithathu ingu-255, kuba yithoni emhlophe egqame kakhulu.

Imibala ye-RGB ibizwa ngokuthi imibala eyengeziwe ngoba udala umhlophe ngokungeza u-R, u-G, no-B ndawonye (okungukuthi, konke ukukhanya kuboniswa emuva emehlweni). Imibala eyengeziwe isetshenziswa ekukhanyeni, kumabonakude nasezikrinini zekhompyutha. Isibonelo, izibonisi zikhiqiza umbala ngokukhipha ukukhanya okuvela kuma-phosphor abomvu, aluhlaza okotshani, naluhlaza okwesibhakabhaka. Iningi elikhulu le-spectrum ebonakalayo lingamelwa njengengxube yokukhanya okubomvu, okuluhlaza okotshani, nokuluhlaza okwesibhakabhaka (RGB) ngokulingana nobukhulu obuhlukahlukene. Uma le mibala ihlangana, kukhiqizwa i-cyan, i-magenta, kanye nephuzi.

Izibani ze-RGB zakhiwa ngemibala emithathu eyinhloko ehlanganisiwe ukwakha isithombe. Ngaphezu kwalokho, kukhona nama-LED aluhlaza okwesibhakabhaka ane-phosphor ephuzi, kanye nama-LED e-ultraviolet ane-phosphor ye-RGB. Ngokuvamile, womabili anezimiso zawo zokuthwebula izithombe.

Zombili i-LED emhlophe kanye ne-RGB LED zinomgomo ofanayo, futhi zombili zinethemba lokufeza umphumela wokukhanya okumhlophe, kodwa enye ivezwa ngqo njengokukhanya okumhlophe, kanti enye yakhiwa ngokuxuba obomvu, oluhlaza okotshani kanye nohlaza okwesibhakabhaka.