2D bar kodi( 2-dimensional bar code ) imalemba chidziwitso cha zizindikiro za deta pogwiritsa ntchito zithunzi zakuda ndi zoyera zomwe zimagawidwa mu ndege ( njira ziwiri) malinga ndi malamulo ena mu geometry yoperekedwa. Pakuphatikiza ma code, malingaliro a '0' ndi '1' bit streams, omwe amapanga maziko amkati a makompyuta, amagwiritsidwa ntchito mwanzeru. Maonekedwe angapo a geometric ogwirizana ndi binary amagwiritsidwa ntchito kuyimira manambala a mawuwo, ndipo zambiri zimasinthidwa zokha ndikuwerenga kokha kwa chipangizo cholowetsa zithunzi kapena chida chojambulira zithunzi. Ili ndi mawonekedwe odziwika aukadaulo wa barcode: code iliyonse ili ndi mawonekedwe ake enieni. Chikhalidwe chilichonse chimakhala ndi m'lifupi mwake. Ili ndi ntchito yotsimikizira. Nthawi yomweyo, ilinso ndi ntchito yodziwikiratu mizere yosiyanasiyana yazidziwitso ndikukonza zosintha zakusintha kwazithunzi.
Khodi ya 2D ndi mtundu wapamwamba kwambiri wa barcode kuposa 1d code. Khodi ya 1d imatha kufotokozera zambiri mbali imodzi (nthawi zambiri yopingasa), pomwe khodi ya 2d imatha kusunga zambiri mbali zonse zopingasa komanso zopingasa. Khodi ya 1d imatha kupangidwa ndi manambala ndi zilembo, pomwe 2d code imatha kusunga zidziwitso monga zilembo zaku China, manambala ndi zithunzi, kotero gawo la 2d code ndilambiri.
Malinga ndi mfundo ya 2d code, awiri-dimensional code akhoza kugawidwa m'magulu awiri: matrix 2d code ndi stacked / mzere 2d code.
Khodi ya Matrix 2d Matrix 2d code, yomwe imadziwikanso kuti chessboard 2d code, imasungidwa mumalo amakona anayi ndi magawo osiyanasiyana a ma pixel akuda ndi oyera pamatrix. Pamalo ofananirako a matrix, binary '1' imayimiridwa ndi mawonekedwe a mfundo (makona akulu, zozungulira kapena mawonekedwe ena), ndipo binary '0' siyiyimiridwa ndi mawonekedwe a mfundo. Kuloledwa ndi kuphatikiza kwa mfundo kumatsimikizira tanthauzo la matrix 2d barcode. Matrix 2d bar code ndi mtundu watsopano wodziwikiratu chizindikiro chodziwikiratu komanso makina opangira ma code potengera ukadaulo wokonza zithunzi zamakompyuta komanso mfundo zophatikizira zolembera. Ma barcode a matrix 2d oyimira ndi QR Code, Data Matrix, MaxiCode, Han Xin Code, Grid Matrix, etc.
QR kodi
QR Code ndi Quick Response Code matrix code, yomwe imadziwikanso kuti Denso QR Code. Ndi matrix 2d bar code yokhazikitsidwa ndi mabungwe apadziko lonse lapansi, yomwe idapangidwa koyamba ndi Denso, Japan, mu Seputembara 1994. Mulingo wadziko la China udautcha kuti fast response matrix code. Kuphatikiza pa mawonekedwe a 1d bar code, ilinso ndi zabwino zambiri zazidziwitso zambiri, kudalirika kwakukulu, kugwira ntchito kwapang'onopang'ono, kukonza bwino kwa zidziwitso zosiyanasiyana zamalemba, kuthandizira 360 ° kuwerenga motsatana, kuwongolera zolakwika, komanso chinsinsi champhamvu. ndi zotsutsana ndi chinyengo. Thandizani zilembo za ASCII ndi zilembo zazikulu za ASCII.
Micro QR ndi njira yatsopano yolembera ya 2d yoperekedwa mu ISO : 2006 chikalata, chofanana ndi QR. Komabe, poyerekeza ndi code ya QR 2d, Micro QR ili ndi izi: chizindikiro chimodzi chokha ndicho chofunikira, ndipo voliyumu yake ndi yaying'ono.
Data Matrix
Data Matrix, yomwe poyamba inatchedwa Data code, inapangidwa ndi International Data Matrix (ID Matrix) mu 1989. Data Matrix ikhoza kugawidwa mu ECC000-140 ndi ECC200, ECC200 imagwiritsidwa ntchito kwambiri. Data Matrix imathandizira zilembo za ASCII ndi zilembo zazikulu za ASCII. nthawi zambiri amagwiritsidwa ntchito pozindikiritsa nambala yazinthu zazing'ono.
Grid Matrix
Grid Matrix, yomwe imatchedwa GM code, ndi lalikulu 2d code. Chojambulachi chimapangidwa ndi ma macro macro modules, ndipo gawo lililonse lalikulu limapangidwa ndi ma 6 × 6 masikweya mayunitsi.
Khodi yojambulidwa / yokhala ndi 2d
Khodi ya bar ya 2d stacking / mizere-parallel imatchedwanso stacking 2d bar code kapena layer-parallel 2d bar code. Mfundo yake yolembera imachokera pa 1d bar code, yomwe imayikidwa m'mizere iwiri kapena kuposerapo ngati pakufunika. Imatengera makhalidwe ena a 1d bar code pamapangidwe a coding, mfundo yotsimikizira komanso kuwerenga. Zida zowerengera zimagwirizana ndi kusindikiza kwa bar code ndi ukadaulo wa 1d bar code. Komabe, chifukwa cha kuchuluka kwa mizere, ndikofunikira kudziwa mizere, ndipo decoding algorithm siyifanana ndendende ndi pulogalamuyo. Mtundu woyimira mzere wa bar 2d : PDF417 (yomwe imagwiritsidwa ntchito kwambiri), Micro PDF417, Code 16K, CODABLOCK F, Code 49, ndi zina.
Chithunzi cha 417 PDF
PDF417 ndiyomwe imagwiritsidwa ntchito kwambiri pa 2d code. Khodi ya bar ndi mtundu wa kachulukidwe kapamwamba ka bar, m'malo omwewo kuposa ma 2d wamba omwe amatha kudziwa zambiri. Amagwiritsidwa ntchito kwambiri mu matikiti a lottery, matikiti a ndege, ma ID owerengera.
Kuyang'ana mtengo wotchipa ndibarcode scanner yapamwamba kwambiriza bizinesi yanu?
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Nthawi yotumiza: Nov-22-2022