Grayscale yana nufin wani muhimmin ra'ayi da aka yi amfani da shi don wakiltar canjin launi a sarrafa hoto. Matakan launin toka yawanci suna daga 0 zuwa 255, inda 0 ke wakiltar baƙar fata, 255 yana wakiltar fari, kuma lambobin da ke tsakanin suna wakiltar digiri daban-daban na launin toka. Mafi girman darajar launin toka, mafi girman hoton; ƙananan ƙimar launin toka, mafi duhu hoton.
Ana bayyana ƙimar Grayscale azaman intigers masu sauƙi, ba da damar kwamfutoci yin hukunci da sauri da daidaitawa yayin sarrafa hotuna. Wannan wakilcin lambobi yana sauƙaƙa ƙwaƙƙwaran sarrafa hoto kuma yana ba da dama ga ɗimbin wakilcin hoto.
An fi amfani da Grayscale wajen sarrafa hotuna na baƙi da fari, amma kuma yana taka muhimmiyar rawa a cikin hotuna masu launi. Ana ƙididdige darajar sikelin launin toka na hoton launi ta matsakaicin ma'auni na sassa uku masu launi na RGB (ja, kore, da shuɗi). Wannan matsakaicin nauyi yana amfani da ma'aunin nauyi uku na 0.299, 0.587, da 0.114, daidai da launuka uku na ja, kore, da shuɗi. Wannan hanyar auna nauyi ta samo asali ne daga mabambantan hankali na idon ɗan adam zuwa launuka daban-daban, wanda hakan ke sa hoton da ya canza launin toka ya fi dacewa da halayen gani na idon ɗan adam.
Greyscale na LED nuni
Nunin LED shine na'urar nuni da ake amfani da ita sosai wajen talla, nishaɗi, sufuri da sauran fagage. Tasirin nuninsa yana da alaƙa kai tsaye da ƙwarewar mai amfani da tasirin watsa bayanai. A cikin nunin LED, manufar launin toka yana da mahimmanci musamman saboda kai tsaye yana shafar aikin launi da ingancin hoton nunin.
Girman launin toka na nunin LED yana nufin aikin pixel LED guda ɗaya a matakan haske daban-daban. Ma'auni daban-daban na launin toka sun yi daidai da matakan haske daban-daban. Mafi girman matakin launin toka, mafi kyawun launi da cikakkun bayanai waɗanda nuni zai iya nunawa.
Misali, tsarin launin toka na 8-bit zai iya samar da matakan launin toka 256, yayin da tsarin launin toka mai 12-bit zai iya samar da matakan launin toka 4096. Saboda haka, manyan matakan launin toka na iya sanya nunin LED ya nuna santsi da hotuna na halitta.
A cikin nunin LED, aiwatar da sikelin launin toka yawanci ya dogara da fasahar PWM (modulation mai faɗin bugun jini). PWM tana sarrafa hasken LED ta hanyar daidaita rabon lokacin kunnawa da kashewa don cimma matakan launin toka daban-daban. Wannan hanyar ba zata iya sarrafa haske kawai daidai ba, har ma da rage yawan amfani da wutar lantarki yadda ya kamata. Ta hanyar fasahar PWM, nunin LED na iya samun sauye-sauye masu launin toka yayin da suke kiyaye haske mai girma, ta haka ne ke samar da ingantaccen tasirin nunin hoto.
Girman launin toka
Grade launin toka yana nufin adadin matakan launin toka, wato, adadin matakan haske daban-daban waɗanda nunin zai iya nunawa. Mafi girman sikelin launin toka, mafi kyawun aikin launi na nuni da mafi kyawun bayanan hoto. Matsayin matakin launin toka kai tsaye yana rinjayar jikewar launi da bambanci na nuni, don haka yana shafar tasirin nuni gabaɗaya.
8-bit mai launin toka
Tsarin launin toka na 8-bit na iya samar da matakan launin toka 256 (2 zuwa 8th power), wanda shine mafi girman matakin launin toka don nunin LED. Kodayake matakan launin toka 256 na iya saduwa da buƙatun nuni na gabaɗaya, a cikin wasu manyan aikace-aikace, 8-bit launin toka mai yuwuwa ba su da kyau sosai, musamman lokacin nuna hotuna masu ƙarfi (HDR).
10-bit launin toka
Tsarin launin toka na 10-bit na iya samar da matakan launin toka 1024 (2 zuwa 10th power), wanda ya fi laushi kuma yana da canjin launi mai laushi fiye da 8-bit grayscale. Ana amfani da tsarin 10-bit mai launin toka sau da yawa a cikin wasu manyan aikace-aikacen nuni, kamar hoton likitanci, ƙwararrun daukar hoto, da samar da bidiyo.
12-bit launin toka
Tsarin launin toka na 12-bit na iya samar da matakan launin toka na 4096 (2 zuwa 12th power), wanda shine babban matakin launin toka kuma yana iya samar da kyakkyawan aikin hoto. Ana amfani da tsarin 12-bit mai launin toka sau da yawa a cikin wasu aikace-aikacen nuni masu matukar buƙata, kamar sararin samaniya, sa ido na soja da sauran fagage.
A cikin nunin nunin LED, aikin launin toka ba wai kawai ya dogara da tallafin kayan aiki bane, amma kuma yana buƙatar haɗin gwiwar algorithms na software. Ta hanyar algorithms na sarrafa hoto na ci gaba, aikin launin toka za a iya ƙara inganta shi, ta yadda allon nuni zai iya maido da ainihin yanayin a babban matakin launin toka.
Kammalawa
Grayscale muhimmin ra'ayi ne a cikin sarrafa hoto da fasahar nuni, kuma aikace-aikacen sa a cikin allon nunin LED yana da mahimmanci musamman. Ta hanyar ingantaccen iko da bayyana launin toka, allon nunin LED na iya samar da launuka masu kyau da kyawawan hotuna, don haka haɓaka ƙwarewar gani na mai amfani. A aikace-aikace masu amfani, zaɓi na matakan launin toka daban-daban yana buƙatar ƙaddara bisa ga takamaiman buƙatun amfani da yanayin aikace-aikacen don cimma sakamako mafi kyawun nuni.
Aiwatar da launin toka na nunin nunin LED ya dogara ne akan fasahar PWM, wanda ke sarrafa hasken LEDs ta hanyar daidaita rabon lokacin sauyawa na LEDs don cimma matakan launin toka daban-daban. Matsayin launin toka kai tsaye yana rinjayar aikin launi da ingancin hoton allon nuni. Daga 8-bit launin toka zuwa 12-bit launin toka, aikace-aikace na matakan launin toka daban-daban ya dace da bukatun nuni a matakai daban-daban.
Gabaɗaya, ci gaba da ci gaba da ci gaban fasaha na launin toka yana ba da fa'idaaikace-aikace mai yiwuwa don nunin nunin LED. A nan gaba, tare da ci gaba da inganta fasahar sarrafa hoto da ci gaba da inganta aikin hardware, aikin launin toka na nunin nunin LED zai zama mafi ban mamaki, yana kawo masu amfani da kwarewa na gani mai ban mamaki. Sabili da haka, lokacin zaɓar da amfani da allon nunin LED, zurfin fahimta da aikace-aikacen da ya dace na fasahar launin toka zai zama mabuɗin don haɓaka tasirin nuni.
Lokacin aikawa: Satumba-09-2024
