• Title/Summary/Keyword: 2D 바코드

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A Digital Watermarking Algorithm Using PIM and 2D Barcode (PIM과 2D 바코드를 이용한 워터마킹 알고리즘)

  • Han Su-Young;Kim Hong-Ryul;Lee Kee-Hee
    • Journal of the Korea Society of Computer and Information
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    • v.10 no.5
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    • pp.103-108
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    • 2005
  • In this Paper, we proposed a novel robust watermarking technique using PIM and 2D barcode for the copyright of the digital images. Because human is impervious to the change in the complex area, the embedding watermark to the selected coefficients using PIM enhances invisibility. A 2D barcode image is used for watermark in this research. The 2D barcode contains more information than conventional ID barcode and includes the error correction algorithm. Therefore the watermarking algorithm using 2D barcode enhances the robustness of watermark. From the experimental results , the proposed algorithm shows better invisibility and robustness performance in a general signal Processing such as JPEG and SPIHT lossy compression.

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A Study on Interactive Information Service based on Augmented Reality (증강현실기반 양방향 정보서비스에 관한 연구)

  • Kim, Yong
    • Journal of Information Management
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    • v.41 no.4
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    • pp.41-67
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    • 2010
  • Augmented reality technology was invented for military purposes at the beginning. But the development of wireless and location based technology in 2000s makes AR services reach the age of innovation. Especially, it attracts attention as a media which enriches our perception. There is a potential that it can extend the virtual information in the real world from optical sense to auditory, tactile, and olfactory sense. This study proposed the interactive information service system and method based on AR. To do it, technical background on AR was analyzed and a method to apply the technology was examined. Especially, as a eco service, this study proposed new information service using 2D bar code in a library for user need and convenience in ubiquitous environment. The proposed service system can optimize practical utilization of information resources in virtual and real reality as consolidating analog and digital resources in a library.

A Method to Recover 2D barcodes Contaminated with Dust (2D 바코드의 분진 오염 극복 방법)

  • Ha, Eunjae;Lee, Jaesung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.23 no.3
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    • pp.276-281
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    • 2019
  • Food printers must use food ink cartridges approved by the Ministry of Food and Drug Safety (MFDS). A 2D bar code is used to read whether the ink cartridge is authentic. However, since the dye is diverged by heat pressure and printed, the barcode is contaminated. In this paper, we propose a pre-processing algorithm to solve the problem of barcode contamination by food coloring dust in a latte art printer. The algorithm is based on various morphological operations. We apply this algorithm before reading contaminated barcode images with a general QR code reader. It has been confirmed that, as compared with the existing QR code reader, the contamination rate that can be perceived is increased from 25% to 40% and even at a contamination rate of 45%, the recognition rate reaches 50%.

A Study on Web-based Real-time Watermarking using 2D Barcode (2D 바코드를 이용한 웹기반 실시간 워터마킹에 관한 연구)

  • Lee, Han-Duck;Lee, Seong-Won;Park, Neungsoo
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.518-519
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    • 2010
  • 워터마킹 기술은 디지털 데이터에 대한 소유권을 보호하기 위한 기술로 다양한 방법이 제시되어 왔다. 본 논문에서는 웹상에서 실시간 워터마킹을 통해 디지털 데이터를 열람하고 있는 사용자의 정보를 열람하고 있는 이미지에 기록하여 무단 복제, 불법 배포 등의 일이 발생하였을 경우 출처를 찾아낼 수 있도록 하는 방법을 제시하였다.

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Error Correcting using the Check digit on Barcode, and the present and future of Barcode (바코드에 있어서 체크숫자를 이용한 오류수정과 바코드의 현재와 미래)

  • Kim, Hwa-Joon
    • Journal for History of Mathematics
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    • v.21 no.2
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    • pp.103-118
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    • 2008
  • Barcode technology is becoming an essential tool for every companies, and this makes help us to gain time, analysis of goods, an inventory control, a prevention of burglar and so on. In this paper, we have treated about the history of barcode, its error correcting using the check digit, and the present and future of barcode. We wish roles of mathematician on new barcode system which it bring on an economical efficiency and stability.

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Implementation of information access embedded system using two-dimensional bar code and TTS (2D 바코드와 TTS를 활용한 정보접근 임베디드 시스템 구현)

  • Lee, Jae-Kyun;Kim, Si-Woo;Lee, Chae-Wook;Lee, Dong-In
    • IEMEK Journal of Embedded Systems and Applications
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    • v.1 no.2
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    • pp.31-36
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    • 2006
  • As two dimensional bar code can collect data and information quickly, it is used and recognized as a useful tool for the many industrial application field. But the information capacity of two dimensional bar code is still limited. Recently, the two dimensional AD bar code (analog-digital code) that can increase its application range and overcome capacity limitation is developed. In this paper, we implement an effective system which can transform text information into voice using two dimensional AD bar code and TTS(Text To Speech). It can be transmitted to blind people by capturing the AD bar code on the papers or the books.

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Simplification of Face Image using Cubic Spline Interpolation (Cubic Spline Interpolation을 이용한 얼굴 영상의 단순화)

  • Kim, Jung-Min;Jung, Eun-Kook;Kim, Sun-Shin
    • Journal of the Korean Institute of Intelligent Systems
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    • v.20 no.5
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    • pp.722-727
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    • 2010
  • This paper is presented to study simplification of face image using cubic spline interpolation for a business card with 2D barcode. People often forget business card's owner because business cards don't be included a face picture generally. To solve such problem, many applications have be developed through mobile devices, Internet and so on. But they couldn't caught up with value of existing business card mad by paper. Hence, some methods which can put information on business card using 1D or 2D barcode had suggested. but they couldn't include information like face image or company logo image which have too much data. Therefore, we study the simplification method of face image to encode from a face image to 2D barcode. The simplification method using spline curves defined by feature points which we dotted on face, ears, hair, eyebrows, nose, lips, neck, etc.. on a face area. for experiment, we see real face image and simplified face image made by proposed method after we automatically extract face watch through camera. In experimental results, data of simplified face image was reduced as small as it can be expressed by 2D barcode, and confirmed that it can effectively express features.

A Review on e-pedigree for Strengthening Global Supply Chain Management (글로벌 SCM 강화를 위한 e-pedigree에 대한 고찰)

  • Seo, Dong-Min;Han, Dae-Hee;Choi, Yong-Jung;Jung, Hae-June;Kim, Hyun-Soo
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.361-364
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    • 2010
  • 글로벌 시장환경체제에서 유통구조가 복잡해짐에 따라 제조사에서 유통업체 및 소비자까지 아우르는 전체 공급망에서 제품에 대한 이력추적관리는 투명한 유통구조를 형성시킬 뿐만 아니라 더 나아가 소비자들의 안전에 지대한 영향을 미친다. 세계보건기구(WHO)에 따르면 선진국에서 부정 전문의약품의 유통비중은 전체 의약품의 1% 정도이며 이를 미국에 적용할 경우(2006년 기준), 미국에서 유통된 34억 개 전문의약품 중 3,400만 개의 전문의약품이 가짜일 가능성이 있는 것으로 보고되고 있다. 이로 인해 미국 캘리포니아주에서는 유통망의 투명성과 소비자의 안전을 보고하기 위하여 2D 바코드나 RFID(Radio Frequency IDentification)를 통해 의약품 제조에서 약국까지의 유통과정 계보를 추적할 수 있도록 제약기업에 2015년부터 제품에 시리얼번호를 부착한 이력장치(serialized e-pedigree)를 시행할 예정이다. 따라서 본 연구에서는 국내 외적으로 물류/유통과정에서 제품의 위 변조를 예방하기 위한 e-pedigree에 현황 및 동태를 파악하고 국내 e-pedigree에 대한 방향성을 고찰하는데 그 목적이 있다.

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A 2-Dimensional Barcode Detection Algorithm based on Block Contrast and Projection (블록 명암대비와 프로젝션에 기반한 2차원 바코드 검출 알고리즘)

  • Choi, Young-Kyu
    • The KIPS Transactions:PartB
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    • v.15B no.4
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    • pp.259-268
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    • 2008
  • In an effort to increase the data capacity of one-dimensional symbology, 2D barcodes have been proposed a decade ago. In this paper, we present an effective 2D barcode detection algorithm from gray-level images, especially for the handheld 2D barcode recognition system. To locate the symbol inside the image, a criteria based on the block contrast is adopted, and a gray-scale projection with sub-pixel operation is utilized to segment the symbol precisely from the region of interest(ROI). Finally, the segmented ROI is normalized using the inverse perspective transformation for the following decoding processes. We also introduce the post-processing steps for decoding the QR-code. The proposed method ensures high performances under various lighting/printing conditions and strong perspective deformations. Experiments shows that our method is very robust and efficient in detecting the code area for the various types of 2D barcodes in real time.

Suggestion for Mobile Tourism Information Supply System' Using RTLS and 2D Barcode (RTLS와 2D 바코드를 응용한 모바일 관광정보 제공 시스템의 구현 방안)

  • Yang, Sung-Soo;Huh, Hyang-Jin;Park, Si-Sa;Jo, Tae-Joong
    • The Journal of the Korea Contents Association
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    • v.7 no.9
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    • pp.81-88
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    • 2007
  • Having been speed development of information delivery using the mobile phone, it is generalization. The Mobile has one of the importance for their information searcher as tool. It is widely recognized that tourism information can be defined as useful and reliable reference which significantly influence the traveler' decision-making. This paper presents pioneer and ongoing study of the method for the pinpionting mobile tourism information system with RTLS, 2D Barcode and mobile phone itself. And, this paper relief that benefit and influence of TCO a view on the business administration points.