View Item 
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Computer Science and Engineering (SCSE)
      • SCSE Student Reports (FYP/IA/PA/PI)
      • View Item
      •   Home
      • 1. Schools
      • College of Engineering
      • School of Computer Science and Engineering (SCSE)
      • SCSE Student Reports (FYP/IA/PA/PI)
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      Subject Lookup

      Browse

      All of DR-NTUCommunities & CollectionsTitlesAuthorsBy DateSubjectsThis CollectionTitlesAuthorsBy DateSubjects

      My Account

      Login

      Statistics

      Most Popular ItemsStatistics by Country/RegionMost Popular Authors

      About DR-NTU

      Feasibility study and implementation of paper “fingerprint” anti-counterfeiting system using flatbed scanner

      Thumbnail
      LI ZIXUAN_SCE15-0391.pdf (8.411Mb)
      Author
      Li, Zixuan
      Date of Issue
      2016
      School
      School of Computer Engineering
      Abstract
      Counterfeiting is a tough issue with serious negative impact to the society, that people are always trying to resolve over the years. Presently, most anti-counterfeiting techniques have its own limitations. The idea of using paper’s natural unique three-dimensional surface texture for authentication shows a new perspective. Among the different researches done on this topic, Clarkson et al. (2009) proposed a novel idea of using the commodity scanner to scan the paper at four orientations and processing the scanned images to obtain the normal information for each surface point, so as to use it for feature vector computation. This Final Year Project is mainly inspired by the idea and framework proposed by Clarkson et al. in 2009 with proper modifications and improvements. A feasibility study on this topic was done to see whether the unique paper texture information can be captured with even cheaper devices and used to distinguish different papers, as cost and workability are two important factors affecting whether the system can be popularized. With the result showing its feasibility, the actual general-purpose paper “fingerprint” anti-counterfeiting system prototype was developed with the goals of economic, accurate, robust, secure and widely applicable. Several improvements have been made. Firstly, the system can accept images scanned using extremely cheap flatbed scanner with any scan resolution larger than 75dpi and smaller than 1200dpi and saved in different formats. Secondly, it does not require any modification or marking on the original paper for alignment. At the same time, many important findings that need special attention during actual implementation are pointed out: The existence of different error sources were discovered, which are to be carefully handled during implementation; The need to align the validation images with the image I0˚r (I0˚r refers to the I0˚ image used during registration) is highlighted, and the solution on how to align them without the need of storing I0˚r is suggested; The potential issues that users might not know which side of the paper should be scanned for validation and which image should be labeled as I0˚v (I0˚v refers to the I0˚ image used during validation) are carefully considered. The paper “fingerprint” anti-counterfeiting system prototype was developed with the goals in mind, and it is proven that the goals are met successfully after doing the robustness test. In addition, some of the possible applications of the system are explored, which again shows its value. Nevertheless, there are still space for further improvements. Possible future works are listed in this report showing the system’s potential to reach a higher level.
      Subject
      DRNTU::Engineering::Computer science and engineering::Computing methodologies::Image processing and computer vision
      Type
      Final Year Project (FYP)
      Rights
      Nanyang Technological University
      Collections
      • SCSE Student Reports (FYP/IA/PA/PI)

      Show full item record


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       

      DCSIMG