qr codes..seminar
TRANSCRIPT
8/3/2019 QR Codes..Seminar
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Contents
IntroductionProblem DefinitionEme rg enc eFea tur esH istory of St a nd a rdiz a tion a nd Outlin e Sp ecific a tionC onfiguration(h/w,s/w)Ver sion a nd Modul e Siz e
Sy stem Configur a tionR ee d-Solo m on E rror Corr ection T echniqu eStructur e of QR Cod eApplic a tion sF utur e scop eL im ita tion s
Conclu sion
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Introduction
³
a matrix code or a 2 dimensional bar code
created by Japanese corporation Denso Wave´
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PROBLEM DEFINATION
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Em ergence
A QR Cod e hold s d a ta in both V ertical a nd Horizontal dir ection s.
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Fea tur es
H igh C a pa city E ncoding of D a ta
Sma ll Printout Siz e
Dirt a nd D ama ge R es ista nt
R ea da bl e fro m a ny dir ection in 360°
Structur ed App end Fea tur e
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H igh C a p a city E ncoding of D a ta
A QR Code symbol of this size canencode 300 alphanumericcharacters.
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Sma ll Print Out Siz e
A QR Code encodes the same amount of data inapproximately one-tenth the space of a traditional Bar Code.
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Dirt a nd D ama ge R es ista nt
Da ta ca n b e r es tor ed eve n if th e
sym bol i s pa rti a lly dirty or
dama ged .
M ax im um 30% of cod e word s ca n
be r es tor ed .
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R ea da bl e fro m a ny dir ection in 360°
P osition detection patterns gu a r a nt ee sta bl e high spee dr ea ding, circu mve nting th e nega tive eff ect s of b a ckgroundint erf er enc e.
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S tructured App end Feature
Th ese cod es ca n b e di vid ed into
m ultipl e d a ta a r eas.
Con ve r se ly, infor ma tion stor ed
in m ultipl e Cod e sym bol s ca n
be r econ struct ed as singl e da ta
sym bol s.
On e da ta sym bol c a n b e di vid ed
into up to 16 sym bol s,
a llowing printing in a na rrow
a r ea.
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H istory of QR Cod e St a nd a rdiz a tion
QR Cod e St a nd a rdiz a tion
Octob er,1997
A ppro ve d as A IM Int ern a tion a l (A uto ma tic Id entific a tion M a nuf a ctur er sInt ern a tion a l) sta nd a rd (ISS - QR Cod e)
M a rch, 1998A ppro ve d as JE ID A (Ja pa nese E lectronic Indu stry D eve lop me nt
Ass oci a tion) sta nd a rd ( JE ID A -55)
Ja nu a ry,1999
A ppro ve d as J IS ( Ja p a n ese Indu stri a l St a nd a rd s) sta nd a rd ( J IS X 0510)
J un e , 2000 A ppro ve d as ISO int ern a tion a l sta nd a rd (ISO/I E C18004)
No v, 2004Micro QR Cod e is Appro ve d as J IS ( Ja pa nese Indu stri a l St a nd a rd s)
sta nd a rd ( J IS X 0510)
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Q R Code Outline S p ecifications
Sy m bol size 21 × 21 - 177 × 177 m odul es (size grow s by 4 m odul es /sid e)
Typ e & Am ountof D a ta (Mi xe d u se is po ss ibl e. )
Nu me ric M ax. 7,089 ch a r a ct er s
A lph a nu me ric M ax. 4,296 ch a r a ct er s
8-bit byt es (bin a ry) M ax. 2,953 ch a r a ct er s
E rror corr ection(d a ta r es tor a tion)
Leve l LAppro x. 7% of cod e word s
ca n b e r es tor ed .
Leve l MAppro x. 15% of cod e
word s ca n b e r es tor ed .
Leve l QAppro x. 25% of cod e
word s ca n b e r es tor ed .
Leve l H Appro x. 30% of cod eword s ca n b e r es tor ed .
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Sym bol Ver sion s.. 1 to 40
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Modul e size
Print er Hea d D en sity
Sca nn er Fa ctor s
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QR COD E SYST E M CON F IGUR ATION
QO Cod e
print er
Sca nn er or a
m obil e phon e
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R EE D SO L OMON E RROR CORR E CTION
It work s by o ve r sam pling a polyno m ia l con struct ed fro m th e d a ta.
Th ey a r e u se d in wid e va ri ety of co mme rci a l a pplic a tion s,
m ost pro m in ently in CD s a nd D VDs.
Th er e a r e 4 leve ls of error corr ection th a tdeter m in e th e sym bol ve r sion .
R a ising thi s leve l incr eases th e am ount of da ta QR Cod e size.
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S tructure of a Q R Code
W hit e a nd Bl a ck c ells a r e ca lled
³F inder P attern´ a nd ³T iming
P attern´.
In y ellow color p a rt s, ³ encoded
data´ is stor ed .
In Cy a n color p a rt s, ³F ormat
F ormation´ is stor ed .
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App lications
You point your c ell phon e came r a
a t it, t a k e a sna p shot a nd pr es to!
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App lications Contd..
Proc ess of cr ea ting a se lf cont a in ed still image representation forvid eo a nd pl a yb a ck without a ccess ing a se r ve r.
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App lications Contd..
Groc ery stor es ca n h ave th ese cod es on it s items so th a t
cu sto me r c a n downlo a d a ll kind s of nutrition a l infor ma tion .
In th e a uto m oti ve indu stry .
In libr a ri es.
In Ph a r ma cy.
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Lim itations
Th ese QR Cod es a r e a lw a ys squ a r e a nd th e m ini m um QR Cod e Siz e is
21*21 .
Th e size grow s a t a rbitr a ry 4 m odul es per sid e.
³F ind er P a tt ern´ a r e ve ry indu stry looking a nd t a k e up a lot of spa ce.
To se nd a nd r eceive messa ges , h a nd se ts m u st b e web ena bl ed .
Th ese cod es pro vid e a lot of pri va cy which c a n pro ve to b e a soci a l h a za rd .
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Future S co p e
Ha ndling of obj ect s with ma rk s by a robot
Mo vie QR Cod es
It incorpor a tes m oving i ma ges into th e des ign .
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Conclusions
It i s a 2D B a r Cod e or a M a tri x Cod e.
It c a n b e progr amme d both horizont a lly a nd ve rtic a lly.
QR Cod es ca n b e r ea d fro m a ny dir ection .
Da ta ca n b e r es tor ed eve n if QR cod e is dama ged or torn p a rti a lly.
Th ese cod es a r e ve ry int er a cti ve.
It h as wid e a pplic a tion in m obil e phon es , robotic s, ph a r ma cy, indu stry etc .
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References
[1] . K a tsuki, R .; Ot a , J.; Tam ur a , Y.; Mizut a , T.; Kito, T .; A r a i, T .; Ueyama , T .; Ni shiy ama , T .," Ha ndling of obj ect s with ma rk s by a robot," I ntelligent Robots and Systems, 2003. ( I ROS 2003). P roceedings. 2003 IEEE/ RSJ I nternational Conference on , vol.1, no ., pp . 130-135 vol.1, 27-31 Oct . 2003 " .
[2] . Fa las , K as h a ni, "Two-Di me n sion a l B a r-Cod e Decoding with C ame r a -E quipp ed Mobil e Phon es ," percomw , pp . 597-600, F ifth I EEE Int ern a tion a l Conf er enc e on P er vas ive Co m puting a ndCo mm unic a tion s W ork shop s (P erCo m W' 07), 2007
[3] . Ha r a Akihiro( As uk a ya kkyoku) Ku sunoki Kiyo m i(As uk a ya kkyoku) Kurob e Ta k a hiro(D en so Corp .,J PN) ³A pplic a tion of QR Cod e in M edicin e´, Ja pa n J ourn a l of M edic a l Infor ma tic s, 2000, vol 20 .
[4] . Appli ed A lgebr a , A lgebr a ic A lgorith ms a nd E rror-Corr ecting Cod es: 12th ...By T eo Mor a , Ha rold F. M a tt son .
[5] . Introduction to th e Th eory of E rror-Corr ectingBy Ver a Pl ess.
[6] . Ha ndbook of Co m bin a tori a l D es ign sBy C . J. (Ch a rl es J. ) Colbourn, Je ffr ey H. Dinitz
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