Word based multiple dictionary scheme for text compression with application to 2D bar code

1997 ◽  
Author(s):  
K.S. Ng ◽  
L.M. Cheng
Keyword(s):  
Text Compression ◽  
Bar Code ◽  
2D Bar Code

Defective 2D Barcode Image Mosaic Method for Rotary Scanning Serial Image

2013 ◽  
Vol 397-400 ◽  
pp. 2248-2256
Author(s):  
Jia Jing Wang ◽  
Shu Sheng Zhang ◽  
Wei Ping He
Keyword(s):  
Measurement Precision ◽  
Image Mosaic ◽  
Feature Points ◽  
Local Entropy ◽  
Bar Code ◽  
Metal Parts ◽  
2D Barcode ◽  
Curvature Deformation ◽  
Splicing Efficiency ◽  
2D Bar Code

A mosaic method of based on rotational scan sequence cylindrical barcode which is suitable for metal parts is put forward, which combined the hardware and the software. Firstly, extract the feature points of each serial image based on scale-interaction of Marr wavelets. Then, get the optimal match of feature points with improved image local entropy. Lastly, complete the natural splice of the defect 2D bar code images through the algorithm of three interpolation and multi-resolution spline. The experimental results show that the algorithm could extract the feature points of consistent relative position and quantity after the processes of rotation, brightness, blur and nose, at the same time, assure the splicing efficiency and measurement precision of image mosaic. The method can also better finish the defect bar code recovery caused by curvature deformation.

The Design of 2D Bar Code Recognition Software on Android

2012 ◽  
Vol 442 ◽  
pp. 453-457 ◽  
Author(s):  
Yan Yi
Keyword(s):  
Mobile Phone ◽  
Recognition System ◽  
Qr Code ◽  
Two Dimensional ◽  
Bar Code ◽  
Low Resource ◽  
Decode Process ◽  
2D Bar Code ◽  
Recognition Software ◽  
Code Format

In order to promote the application of two dimensional barcode on mobile phone, this paper uses the popular Android technology, and researches QR code format and the decode process of the QR code; and then designs 2D bar code recognition system based on the decode library Zxing. After testing, it is proved that the system has good generality and low resource consuming, and the software of itself is only 140 K.

Image Recognition Method Applying in Formation Control of Mobile Robots

2012 ◽  
Vol 190-191 ◽  
pp. 693-698
Author(s):  
Y.C. Lin ◽  
C.H. Chen ◽  
K.L. Su ◽  
J.H. Guo
Keyword(s):  
Pattern Formation ◽  
Mobile Robots ◽  
Image Recognition ◽  
Formation Control ◽  
Recognition System ◽  
Motion Platform ◽  
Bar Code ◽  
Motion Paths ◽  
Pattern Formations ◽  
2D Bar Code

The article develops multi-pattern formation exchange using A* searching algorithm, and programs the shortest motion paths for mobile robots. The system contains an image recognition system, a motion platform, some wireless RF modules and five mobile robots. We use Otsu algorithm to recognize the variety 2D bar code to classify variety pattern, and control five mobile robots to execute formation exchange, and present the movement scenario on the motion platform. We have been developed some pattern formations according to game applications, such as hook pattern formation, T pattern formation, L pattern formation, rectangle pattern formation, sward pattern formation and so on, and develop the user interface of the multi-robot system to program motion paths for variety pattern formation exchange on the supervised computer. The supervised computer programs pattern formation exchange according to the image recognition results, and controls mobile robots moving on the motion platform via wireless RF interface. In the experimental results, mobile robots can receive the pattern formation command from the supervised computer, and change the original pattern formation to the assigned pattern formation on the motion platform, and avoid other mobile robots on real-time.

DPM 2D Bar Code Locating based on Corner Detection and Clustering Analysis

2015 ◽  
Vol 7 (3) ◽  
pp. 1-12
Author(s):  
Lingling Li ◽  
Tao Gao ◽  
Yaoquan Yang
Keyword(s):  
Scale Space ◽  
Corner Detection ◽  
Data Matrix ◽  
Low Contrast ◽  
Bar Code ◽  
Full Life Cycle ◽  
Density Based Clustering ◽  
Tracking Ability ◽  
Code Type ◽  
2D Bar Code

Industrial DPM bar code is achieved by means of laser etching on metal surface; it uses Data Matrix bar code image as the main carrier, which can ensure the full life cycle tracking ability. But due to the ambient light and metal materials, collected industrial DPM images may exist uneven illumination, low contrast and other issues. How to identify this code type quickly and accurately is a problem, and how to locate the bar code area accurately is even more critical and difficult. In this paper, according to the characteristics of frequently appeared cartesian points in DPM bar code area, an adaptive corner detection method based on curvature scale space is used to detect the corners effectively. Then for the corners gathered by clusters, an improved density-based clustering method is proposed to achieve precise positioning results. Experimental results show that the proposed algorithm has certain suppression ability for low contrast, illumination and blur deformation images and is superior to the traditional algorithms on positioning precision and accuracy.

2D bar code recognition marking in metal parts

2013 ◽  
Vol 32 (11) ◽  
pp. 3210-3213 ◽  
Author(s):  
Cui-yan WANG ◽  
Jian-chao ZHANG
Keyword(s):  
Bar Code ◽  
Metal Parts ◽  
2D Bar Code

2D Bar Code Detection, Recognition and Application Research Based on NI VISION

2015 ◽  
Vol 713-715 ◽  
pp. 2173-2176
Author(s):  
Fu Hai Huang
Keyword(s):  
Virtual Instrument ◽  
Product Information ◽  
Recognition Accuracy ◽  
Application Research ◽  
Bar Code ◽  
Usb Camera ◽  
High Recognition Accuracy ◽  
2D Bar Code ◽  
Accuracy Speed ◽  
Very High

In this paper a method of bar code detection and recognition is introduced, and discussed a combination of machine vision technology and virtual instrument, on this account, USB camera is used to capture images and detection and information extraction of the image of bar code, so user can store the function of product information. This method has very high recognition accuracy, speed and better practicality.

scholarly journals Notice Boards for Concessions and Concessionary Approvals on the Maritime Domain

2018 ◽  
Vol 54 (1) ◽  
pp. 129-141
Author(s):  
Goran Vojković ◽  
Ana Zovko
Keyword(s):  
Minimal Cost ◽  
Bar Code ◽  
The Media ◽  
2D Bar Code

The adoption of the new Concessions Act in 2017 provoked significant reactions within the Croatian public. Reactions were basically related not to the procedural, but to the sectoral regulation: Maritime Domain and the Seaports Act. Namely, according to the media, practice has shown that concession holders have often violated their powers by restricting the general use of the maritime domain. Since it is difficult for an average and even legally instructed person to determine the scope of rights a concessionaire or a concessionary approval holder is awarded on the maritime domain, we would propose that notice boards be introduced that would provide a 2D-bar code for more detailed information concerning the concessionaire or the concessionary approval holder. With a minimal cost, this would significantly increase the transparency of activities carried out on the maritime domain.

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