• Title/Summary/Keyword: Barcode

Search Result 346, Processing Time 0.14 seconds

Barcode watermarking for photographs of mobile phone (모바일 폰의 영상 촬영에 대한 바코드 워터마킹)

  • Hwang, Tae-won;Seo, Jung-hee;Park, Hung-bog
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2017.05a
    • /
    • pp.763-764
    • /
    • 2017
  • The use of barcodes in mobile phones has become generalized, and barcodes are widely used in security-sensitive applications, including mobile payment and personal identification. Generally, images photographed by a mobile phone generate geometric distortion due to the shooting angle, resulting in low quality images. Embedding watermark for low quality images makes it difficult to satisfy transparency. To solve such problem, this paper focuses on the technique of embedding barcode images in the image taken by mobile phone and proposes barcode watermarking for protecting mobile-based ownership. The barcode watermark embedded in the image can be used to prove ownership since it is readable by a machine such as illegal copy.

  • PDF

A Lock System Design Using LCD Barcode of Cellular Phone (휴대폰의 액정 바코드를 이용한 Lock시스템 설계)

  • 곽현민;저광일;조해성;채균식;이상태
    • Journal of the Institute of Electronics Engineers of Korea TC
    • /
    • v.41 no.9
    • /
    • pp.1-7
    • /
    • 2004
  • This thesis shows embodiment of lock system design for combination of usefulness, convenient of Barcode and cellular phone. This thesis consists of Lock system design using cellular phone and product introduction, including details from formation of barcode scanner to scanner design. When this research is applied to security system a general idea of physical key disappears and it is Possible that cellular phone becomes the center of security and we can expect that cellular phone use for payment will increase due to mutual direction service. After, we should study its application to various practical field and develop high sensitive equipment.

A Study On Usage Of the dimension barcode and the RFID based on Ubiquitous (유비쿼터스 환경에서 2차원 바코드 및 RFID 응용에 관한 연구)

  • 김병찬;정성훈;임재홍
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
    • /
    • 2004.04a
    • /
    • pp.49-54
    • /
    • 2004
  • Ubiquitous computing support to use various informations through any machine which can connect the computer in any where and any time. Recently barcode and RFID which is improved business model to store large scale information and certify security in on- and off-line internet technology is applied the credit curd and payment service and so on However this technology has serious problem that RFID In this paper, we investigate method used example of 2D barcode and RFID and compare and analysis characteristics of recent technology to solve former problem in Ubiquitous environment.

  • PDF

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
    • /
    • v.15B no.4
    • /
    • pp.259-268
    • /
    • 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.

Identification of Marker Nucleotides for the Molecular Authentication of Arisaematis Rhizoma Based on the DNA Barcode Sequences (천남성(天南星) 유전자 감별을 위한 DNA 바코드 분석 및 Marker Nucleotide 발굴)

  • Kim, Wook Jin;Lee, Young Mi;Ji, Yunui;Kang, Young Min;Choi, Goya;Kim, Ho Kyoung;Moon, Byeong Cheol
    • The Korea Journal of Herbology
    • /
    • v.29 no.6
    • /
    • pp.35-43
    • /
    • 2014
  • Objectives : Official Arisaematis Rhizoma is described only three species, Arisaema amurnse, Arisaema erubescens, and Arisaema heterophyllum, in national Pharmacopoeia. However, other Arisaema species, Arisaema ringens, Arisaema takesimense and Arisaema serratum, also have been distributed as an inauthentic Arisaematis Rhizoma in the herbal market. To develop a reliable molecular authentication method for Arisaematis Rhizoma in species level, we analyzed DNA barcode regions using six Arisaema species. Methods : Thirty-eight samples of six Arisaema plants species (A. amurense, A. amurense f. serratum, A. heterophyllum, A. takesimense, and A. serratum) were collected from different habitate and nucleotide sequences of DNA barcode regions (rDNA-ITS, matK, and rbcL gene) were analyzed after PCR amplification. The species-specific sequences and phylogenetic relations were estimated using entire sequences of three DNA barcodes based on the analysis of ClastalW and UPGMA, respectively. Results : The comparative analysis of DNA barcode sequences were revealed inter-species specific nucleotides to distinguish the medicinal plant of Arisaema Rhizoma in species levels excluding between A. amurense and its subspecies (A. amurense f. serratum) and A. takesimense and A. serratum, respectively. However, we obtained sequence differences enough to discriminate authentic and inauthentic Arisaematis Rhizoma. Therefore, we suggest that these SNP type molecular genetic markers were an reliable method avaliable to identify official herbal medicines. Conclusions : These marker nucleotides could be useful to identify the official herbal medicines by providing definitive information that can identify original medicinal plant and distinguish from inauthentic adulterants and substitutes.

DNA Barcoding Korean Birds

  • Yoo, Hye Sook;Eah, Jae-Yong;Kim, Jong Soo;Kim, Young-Jun;Min, Mi-Sook;Paek, Woon Kee;Lee, Hang;Kim, Chang-Bae
    • Molecules and Cells
    • /
    • v.22 no.3
    • /
    • pp.323-327
    • /
    • 2006
  • DNA barcoding, an inventory of DNA sequences from a standardized genomic region, provides a bio-barcode for identifying and discovering species. Several recent studies suggest that the sequence diversity in a 648 bp region of the mitochondrial gene for cytochrome c oxidase I (COI) might serve as a DNA barcode for identifying animal species such as North American birds, insects and fishes. The present study tested the effectiveness of a COI barcode in discriminating Korean bird species. We determined the 5' terminus of the COI barcode for 92 species of Korean birds and found that species identification was unambiguous; the genetic differences between closely related species were, on average, 25 times higher than the differences within species. We identified only one misidentified species out of 239 specimens in a genetic resource bank, so confirming the accuracy of species identification in the banking system. We also identified two potential composite species, calling for further investigation using more samples. The finding of large COI sequence differences between species confirms the effectiveness of COI barcodes for identifying Korean bird species. To bring greater reliability to the identification of species, increased intra- and interspecies sampling, as well as supplementation of the mitochondrial barcodes with nuclear ones, is needed.

Barcode Region of Interest Extraction Method Using a Local Pixel Directions in a Multiple Barcode Region Image (다중 바코드 영역을 가지는 영상에서 지역적 픽셀 방향성을 이용한 바코드 관심 영역 추출 방법)

  • Cho, Hosang;Kang, Bongsoon
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.19 no.9
    • /
    • pp.2121-2128
    • /
    • 2015
  • In this paper presents a method of extracting reliable and regions of interest (ROI) in barcode for the purpose of factory automation. backgrounds are separated based on directional components and the characteristics of detected patterns. post-processing is performed on candidate images with analysis of problems caused by blur, rotation and areas of high similarity. In addition, the resizing factor is used to achieve faster calculations through image resizing. The input images contained multiple product or barcode for application to diverse automation environments; a high extraction success rate is accomplished despite the maximum shooting distance of 80 cm. Simulations involving images with various shooting distances gave an ROI detection rate of 100% and a post-processing success rate of 99.3%.

Mobile Robot Exploration in Indoor Environment Using Topological Structure with Invisible Barcodes

  • Huh, Jin-Wook;Chung, Woong-Sik;Nam, Sang-Yep;Chung, Wan-Kyun
    • ETRI Journal
    • /
    • v.29 no.2
    • /
    • pp.189-200
    • /
    • 2007
  • This paper addresses the localization and navigation problem in the movement of service robots by using invisible two dimensional barcodes on the floor. Compared with other methods using natural or artificial landmarks, the proposed localization method has great advantages in cost and appearance since the location of the robot is perfectly known using the barcode information after mapping is finished. We also propose a navigation algorithm which uses a topological structure. For the topological information, we define nodes and edges which are suitable for indoor navigation, especially for large area having multiple rooms, many walls, and many static obstacles. The proposed algorithm also has the advantage that errors which occur in each node are mutually independent and can be compensated exactly after some navigation using barcodes. Simulation and experimental results were performed to verify the algorithm in the barcode environment, showing excellent performance results. After mapping, it is also possible to solve the kidnapped robot problem and to generate paths using topological information.

  • PDF

Barcode Systems for Library Applications (도서관(圖書館) 업무(業務)에 대한 바코드 시스템의 응용(應用))

  • Choi, Suk-Doo
    • Journal of Information Management
    • /
    • v.19 no.1
    • /
    • pp.30-49
    • /
    • 1988
  • To design and implement a barcode system in the process of library automation, a thorough understanding of the elements of a barcode system is essential. This paper is to provide the basic features of barcoding along with discussions of the selection criteria of the symbology, media, printer, operator, scanner, decorder and a methodology of library's approach.

  • PDF

Barcode Pattern Image Watermark Using Triplet (트리플릿을 이용한 바코드 패턴 이미지 워터마크)

  • Park, Byung-Su;Chu, Hyung-Suk;An, Chong-Koo
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.57 no.12
    • /
    • pp.2330-2335
    • /
    • 2008
  • In this paper, we proposed a robust watermark scheme for image based on the discrete wavelet transform. In the first, we use the triplet method for embedding and extraction of watermark. Triplet method uses relationship among the discrete wavelet coefficients at the same position in the three detail subband of image. In the second, we use barcode Pattern Image for watermark scheme. By using barcode Pattern Images, a user is able to make many kinds of own watermark. In the third, the proposed method for image watermark provides the invisiblility which the other user can not discriminate watermark from watermarked image. The advantage of the proposed method is visibility when we extracted watermark from the image. The corresponding experimental results show that the proposed method has performance of a robustness from the noise attack.