Cov nplai grey ntawm cov xim puv xim LED yog hom grey nplai, uas yog pes tsawg qhov ntxoov ntxoo xim tuaj yeem muaj los ntawm lub teeb mus rau qhov tsaus ntuj. Thaum siv cov thev naus laus zis thev naus laus zis, qhov grey nplai ntawm cov xim puv xim LED yog qhov tseem ceeb uas cuam tshuam rau cov xim uas pom. Feem ntau hais lus, qhov siab dua ntawm qib grey, cov xim ntau dua, cov duab zoo dua, thiab qhov yooj yim dua nws yog los qhia cov ntsiab lus nplua nuj.
Tag nrho xim LED zaub
Lub hauv paus ntsiab lus ntawm greyscale imaging ntawm tag nrho-xim LED zaub:
Cov qib grey ntawm cov xim puv xim LED feem ntau yog nyob ntawm tus lej digital thiab analog-rau-digital conversion. Qhov tseeb, cov txheej txheem ua yeeb yaj kiab, lub cim xeeb thiab kev sib kis hauv lub cev txhua tus xav tau kev txhawb nqa digital. Tam sim no cov kev siv tseem ceeb ntawm cov xim puv xim LED yog:
1. Ib qho 8-ntsis ua haujlwm, uas yog, 256 (2 mus rau 8 lub zog) grey nplai. Qhov kev nkag siab yooj yim yog tias muaj 256 qhov ci hloov pauv ntawm cov xim dub rau dawb.
2. A 10-ntsis ua haujlwm, uas yog 1024 (2 mus rau 10 lub zog) grey nplai. Qhov kev nkag siab yooj yim yog tias muaj 1024 brightness hloov ntawm dub mus rau dawb.
3. A 12-ntsis ua qhov system, uas yog, 4096 (2 mus rau 12th hwj chim) grey scale. Qhov yooj yim nkag siab yog tias muaj 4096 brightness hloov ntawm dub mus rau dawb.
4. 14-ntsis ua qhov system, uas yog, 16384 (2 mus rau 14 lub zog) grey scale. Qhov yooj yim nkag siab yog tias muaj 16384 brightness hloov ntawm dub mus rau dawb.
Yuav ua li cas txheeb xyuas qhov ci ci ntawm cov xim puv xim LED
Qhov ci ci kev ntxub ntxaug ntawm cov xim puv xim LED yog hais txog qhov ci ci ntawm cov duab uas tuaj yeem ua rau tib neeg lub qhov muag los ntawm qhov tsaus ntuj mus rau qhov dawb tshaj plaws. Qee qhov kev soj ntsuam yav dhau los muaj cov qib grey siab heev, uas tuaj yeem ncav cuag 256 lossis 1024 qib. Txawm li cas los xij, vim qhov tsis txaus ntseeg ntawm tib neeg lub qhov muag rau qhov ci, cov qib grey no tsis tuaj yeem lees paub tag nrho. Ntawd yog, tej zaum yuav muaj ntau qib uas nyob ib sab ntawm greyscale uas zoo ib yam. Thiab txhua leej txhua tus lub qhov muag txawv txawv. Rau cov zaub puv xim LED, qhov siab dua ntawm tib neeg lub qhov muag pom, qhov zoo dua, vim tias tom qab tag nrho, cov duab tso tawm yog rau tib neeg pom. Qhov siab dua qhov ci ntsa iab uas tib neeg lub qhov muag tuaj yeem paub qhov txawv, qhov ntau dua qhov chaw xim ntawm cov xim LED puv xim, thiab qhov muaj peev xwm nthuav tawm cov xim nplua nuj ntau dua. Tag nrho-xim LED zaub brightness qhia txog qib tuaj yeem kuaj nrog software tshwj xeeb. Feem ntau, tag nrho-xim LED zaub tuaj yeem ncav cuag qib 20 lossis ntau dua, txawm tias nws yog qib zoo.
Tam sim no, lub 4096- theem lossis 16384- theem grey nplai lossis siab dua raug xa mus los ntawm qee qhov kev ua haujlwm puv xim LED zaub tswj cov khoom xa tawm hais txog qhov chaw grey qhov chaw tau txais tom qab hloov pauv tsis muaj kab. Ntawm lawv, 4096 qib siv 8-ntsis rau 12-ntsis qhov chaw nonlinear transformation technology, thiab 16384 theem siv 8-ntsis rau 16-ntsis nonlinear transformation technology. Qhov tsis yog-linear hloov pauv ntawm yim-ntsis qhov yuav ua rau muaj qhov hloov pauv loj dua li qhov yim-ntsis qhov. Feem ntau tsawg kawg yog kaum tus neeg. Zoo li cov nplai grey ntawm cov xim puv xim LED, qhov ntsuas no tsis loj npaum li qhov ua tau. Feem ntau, 12 cov khoom tuaj yeem ua tiav kev hloov pauv txaus.
