2D code is not only QR Code, to see what you have seen ?

Ikhodi yebha ye-2D( 2-dimensional bar code ) irekhoda ulwazi lophawu lwedatha isebenzisa ihluzo ezimnyama nezimhlophe ezisatshalaliswa endizeni ( inkomba enezinhlangothi ezimbili ) ngokuya ngemithetho ethile kujometri ethile. Ekuhlanganisweni kwekhodi, imiqondo ye-' 0 ' kanye ' 1 ' bit streams, akha isisekelo sokucabanga sangaphakathi sekhompuyutha, asetshenziswa ngobuhlakani. Amajamo amaningana ejiyomethri ahambisana nokunambambili asetshenziselwa ukumela ulwazi lwezinombolo lombhalo, futhi ulwazi lucutshungulwa ngokuzenzakalelayo ukufundwa okuzenzakalelayo kwedivayisi yokufaka isithombe noma idivayisi yokuskena kagesi wesithombe. Inezici ezivamile zobuchwepheshe bekhodi yebha : ikhodi ngayinye inesethi yayo yezinhlamvu ezithile. Uhlamvu ngalunye lunobubanzi obuthile. Inomsebenzi othile wokuqinisekisa. Ngesikhathi esifanayo, iphinde ibe nomsebenzi wokuqashelwa okuzenzakalelayo kwemigqa ehlukene yolwazi kanye nokucubungula amaphuzu okushintsha ukuzungezisa ihluzo.

Ikhodi ye-2D iyifomethi yekhodi yebha ethuthuke kakhulu kunekhodi engu-1d. Ikhodi engu-1d ingaveza ulwazi ohlangothini olulodwa kuphela (ngokuvamile iqonde endaweni evundlile), kuyilapho ikhodi engu-2d ingagcina ulwazi kuzo zombili izikhombisi-ndlela ezivundlile neziqondile. Ikhodi engu-1d ingakhiwa kuphela izinombolo nezinhlamvu, kuyilapho ikhodi engu-2d ingagcina ulwazi olufana nezinhlamvu zesiShayina, izinombolo nezithombe, ngakho inkambu yokusetshenziswa kwekhodi engu-2d ibanzi kakhulu.

Ngokomgomo wekhodi engu-2d, ikhodi enezinhlangothi ezimbili ingahlukaniswa ngezigaba ezimbili: ikhodi ye-matrix engu-2d kanye nekhodi estakiwe / irowu engu-2d.

Ikhodi ye-Matrix 2d Ikhodi ye-Matrix 2d, eyaziwa nangokuthi ikhodi ye-chessboard 2d, ibhalwe ngekhodi endaweni engunxande ngokusatshalaliswa okuhlukene kwamaphikseli amnyama namhlophe ku-matrix. Endaweni ehambisanayo yesici se-matrix, kanambambili ' 1 ' imelelwa ukubonakala kwamaphoyinti ( amaphuzu ayizikwele, amaphoyinti ayindilinga noma ezinye izimo), kanti kanambambili ' 0' akamelwe ukubonakala kwamaphoyinti. Ukuvumela nokuhlanganiswa kwamaphoyinti kunquma incazelo emelwe ibhakhodi ye-matrix engu-2d. Ikhodi yebha ye-Matrix 2d iwuhlobo olusha lokuqashelwa kophawu lwesithombe oluzenzakalelayo kanye nesistimu yekhodi yokucubungula esekelwe kubuchwepheshe bokucubungula izithombe zekhompyutha kanye nomgomo wokufaka amakhodi ohlanganisiwe. Amabhakhodi e-matrix angu-2d amele i-QR Code, i-Data Matrix, i-MaxiCode, i-Han Xin Code, i-Grid Matrix, njll.

Ikhodi ye-QR

Ikhodi ye-QR iyikhodi ye-Quick Response Code ye-matrix, eyaziwa nangokuthi Ikhodi ye-Denso QR. Ikhodi yebha ye-matrix engu-2d efanekiselwa izinhlangano zamazwe ngamazwe, eyasungulwa okokuqala yi-Denso, e-Japan, ngo-September 1994. Izinga lezwe laseShayina layibiza ngokuthi ikhodi ye-matrix yokusabela okusheshayo. Ngaphezu kwezimpawu zekhodi yebha engu-1d, iphinde ibe nezinzuzo zomthamo omkhulu wolwazi, ukwethembeka okuphezulu, ukusebenza kwendawo encane, ukucutshungulwa okusebenzayo kolwazi oluhlukahlukene lombhalo, ukusekela ukufundwa kwekhodi yesiqondiso okungahleliwe okungu-360°, ikhono elithile lokuqondisa amaphutha, nokugcinwa kuyimfihlo okuqinile. kanye nokulwa nokukhwabanisa. Sekela izinhlamvu ze-ASCII nezinhlamvu ezibanzi ze-ASCII.

I-Micro QR iyindlela entsha yokufaka ikhodi engu-2d ehlongozwayo ku-ISO : 2006 idokhumenti, efana ne-QR. Nokho, uma kuqhathaniswa nekhodi ye-QR 2d, i-Micro QR inezici ezilandelayo : kudingeka uphawu olulodwa lokusesha, futhi ivolumu incane.

I-Data Matrix

I-Data Matrix, ekuqaleni ebizwa ngokuthi Ikhodi Yedatha, yasungulwa yi-International Data Matrix (ID Matrix) ngo-1989. I-Data Matrix ingahlukaniswa ibe yi-ECC000-140 kanye ne-ECC200, i-ECC200 isetshenziswa kakhulu. I-Data Matrix isekela izinhlamvu ze-ASCII nezinhlamvu ezibanzi ze-ASCII. ngokuvamile isetshenziselwa ukuhlonza inombolo yomkhiqizo wevolumu encane.

Igridi Matrix

I-Grid Matrix, ebizwa nge-GM code, iyikhodi yesikwele engu-2d. Umdwebo wekhodi wakhiwe amamojula angama-square macro, futhi imojula ngayinye ye-macro yakhiwe amayunithi wesikwele angu-6 × 6.

Kustakiwe / kulayini ikhodi engu-2d

Ikhodi yebha engu-2d yokunqwabelanisa / ehambisana nomugqa ibizwa nangokuthi ukupakisha ibha yekhodi engu-2d noma ikhodi yebha engu-2d ehambisana nongqimba. Umgomo wayo wokubhala ikhodi usekelwe kubha yekhodi engu-1d, enqwabelene emigqeni emibili noma ngaphezulu njengoba kudingeka. Izuza njengefa ezinye izici zekhodi yebha engu-1d ekwakhiweni kwekhodi, isimiso sokuqinisekisa kanye nemodi yokufunda. Imishini yokufunda iyahambisana nokuphrinta ikhodi yebha kanye nobuchwepheshe bekhodi yebha engu-1d. Kodwa-ke, ngenxa yokwanda kwenani lemigqa, kuyadingeka ukunquma imigqa, futhi i-algorithm yokuqopha ayifani ncamashi nesoftware. Umugqa omele uhlobo lwekhodi yebha engu-2d : PDF417 (evame ukusetshenziswa), Micro PDF417, Ikhodi 16K, CODABLOCK F, Ikhodi 49, njll.

Idatha ye-417 PDF

I-PDF417 okwamanje iyikhodi estakiwe esetshenziswa kakhulu engu-2d. Ibha khodi iwuhlobo lwekhodi yebha yokuminyana okuphezulu, endaweni efanayo kunekhodi evamile ye-2d engamukela ulwazi olwengeziwe. Isetshenziswa kakhulu kumathikithi elotho, amathikithi endiza, izigcawu zokufunda ama-ID.

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