Migrating 2D barcode technology to web

WELCOME : 

WELCOME K.P.MANEESHA S7-IT- COET Roll No.46

Contents : 

Introduction 2D Barcodes Current Scenario In-Browsers Technology Requirements of Online Environment Online Framework Data Matrix Barcodes Fast Detection & Decoding Analysis of Readers Benefits of using in-browser Decoder Conclusion References Contents

Introduction : 

Introduction Online environmental approach has not been tackled Detection process in browsers is a big challenge Solution : Quick detection using limited resources Image Processing  Efficient detection A fast algorithm  Speedy detection

2D Barcodes…?? : 

2D barcode  Graphical image that store data in 2 dimensions 2D barcodes have an edge over 1D barcodes High density Quick decoding Omni-directional Error correction But readers are more expensive 2D Barcodes…?? What are 2D Barcodes…

Slide 5: 

Types of 2D Barcodes 2D Barcodes…?? (cont…) Matrix barcodes Stacked barcodes PDF 417 Data Matrix Code 49 QR

Current Scenario : 

Decoding barcodes… Current Scenario Barcode Decoders

Slide 7: 

Applications Current Scenario (cont…)

In-Browser Technology : 

In-Browser Technology Special applications Not user friendly Point & Click Click & Point Why in-browser ? Approaches

Requirements : 

Requirements Quick decoding & High accuracy Process 25 fps for 640 X 480 image Targets Development Environment Development Platform  Adobe Flash Language  ActionScript Challenges Running applications in browser is slower Limited access to system resources

Online Framework : 

Online Framework

Data Matrix Barcodes : 

Data Matrix Barcodes Quiet Zone Finder Pattern Synchronization Pattern Data Area Accuracy High density Error Correction Structure Features

Fast Detection & Decoding : 

Pre-process Source Image Select region & trace contour Fast Detection & Decoding

Slide 13: 

Check for FINDER PATTERN Approximate the 4th corner Apply ARC-CIRCLE FITTING Fast Detection & Decoding (cont…)

Fast Detection & Decoding (cont…) : 

Refit regions(if required) Find SYNCHRONIZATION PATTERN Approximate synchronization midpoints Decode binary regions Fast Detection & Decoding (cont…) What makes it fast…? Processes fewer number of pixels Integer operations are used All pixels are not labeled. Simultaneous detection of corner & contour pixels

Analysis of Readers : 

Analysis of Readers Image Size vs. Frame Rate

Analysis of Readers (cont…) : 

Analysis of Readers (cont…) Distance vs. Stream size vs. Code Size

Benefits Of Online Reader : 

Benefits Of Online Reader Single reader for all platform No special application More user-friendly Easy marketing of products Increase user awareness

Conclusion : 

Conclusion The migration has been done using Adobe Flash & ActionScript and deployed in web browsers @ www.ufodesign.ro At present there are no other 2D real-time readers available for Data Matrix code. Creating more user-awareness implies development of more & more interesting online 2D barcode applications.

Slide 19: 

O.Parvu, A.G.Balan, “A Method for Fast Detection and Decoding of Specific 2d Barcodes”, Proceedings of the 17th Telecommunications forum TELFOR 2009, November 24-26,2009, pp. 1137 – 1140. Ovidiu Pârvu, Andrei G. Bălan and Ionel Jian,”Migrating 2D Barcode Technology to the Online in-browser Environment”, International Joint Conference on Computational Cybernetics and Technical Informatics (ICCC-CONTI ) 2010, May 27-29 ,2010,pp. 271 - 276 . en.wikipedia.org www.google.com www.intermec.com ieeexplore.ieee.org References

Questions...?? : 

Questions...?? Thank you