• 제목/요약/키워드: template

검색결과 2,282건 처리시간 0.034초

An Improved Cancelable Fingerprint Template Encryption System Research

  • Wang, Feng;Han, Bo;Niu, Lei;Wang, Ya
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제11권4호
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    • pp.2237-2253
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    • 2017
  • For the existing security problem based on Fuzzy Vault algorithm, we propose a cancelable fingerprint template encryption scheme in this paper. The main idea is to firstly construct an irreversible transformation function, and then apply the function to transform the original template and template information is stored after conversion. Experimental results show it effectively prevents the attack from fingerprint template data and improves security of the system by using minutiae descriptor to encrypt abscissa of the vault. The experiment uses public FVC2004 fingerprint database to test, result shows that although the recognition rate of the proposed algorithm is slightly lower than the original program, but the improved algorithm security and complexity are better, and therefore the proposed algorithm is feasible in general.

Color Edge Detection using Variable Template Operator

  • Baek Young-Hyun;Moon Sung-Ryong
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제6권2호
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    • pp.116-120
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    • 2006
  • This paper discusses an approach for detecting a new edge in color images. The color image is to be represented by a vector field, and the color image edges are detected as differences in the local vector statistics. This method is based on the calculation for the vector angle between two adjacent pixels. Unlike Euclidean distance in RGB space, the vector angle distinguishes the differences in chromaticity, independent of luminance or intensity. The proposed approach can easily accommodate concepts, such as variable template edge detection, as well as the latest developments in vector order statistics for color image processing. In this paper, it is used not a conventional fixed template operator but a variable template operator The variable template is implemented and experimental results for digital color images are included.

가변적 템플릿 메모리를 갖는 디지털 프로그래머블 CNN 구현에 관한 연구 (A study on implementation digital programmable CNN with variable template memory)

  • 윤유권;문성룡
    • 전자공학회논문지C
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    • 제34C권10호
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    • pp.59-66
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    • 1997
  • Neural networks has widely been be used for several practical applications such as speech, image processing, and pattern recognition. Thus, a approach to the voltage-controlled current source in areas of neural networks, the key features of CNN in locally connected only to its netighbors. Because the architecture of the interconnection elements between cells in very simple and space invariant, CNNs are suitable for VLSI implementation. In this paper, processing element of digital programmable CNN with variable template memory was implemented using CMOS circuit. CNN PE circuit was designe dto control gain for obtaining the optimal solutions in the CNN output. Performance of operation for 4*4 CNN circuit applied for fixed template and variable template analyzed with the result of simulation using HSPICE tool. As a result of simulations, the proposed variable template method verified to improve performance of operation in comparison with the fixed template method.

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AN OBJECT TRACKING METHOD USING ADAPTIVE TEMPLATE UPDATE IN IR IMAGE SEQUENCE

  • Heo, Pyeong-Gang;Lee, Hyung-Tae;Suk, Jung-Youp;Jin, Sang-Hun;Park, Hyun-Wook
    • 한국방송∙미디어공학회:학술대회논문집
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    • 한국방송공학회 2009년도 IWAIT
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    • pp.174-177
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    • 2009
  • In object tracking, the template matching methods have been developed and frequently used. It is fast enough, but not robust to an object with the variation of size and shape. In order to overcome the limitation of the template matching method, this paper proposes a template update technique. After finding an object position using the correlation-based adaptive predictive search, the proposed method selects blocks which contain object's boundary. It estimates the motion of boundary using block matching, and then updates template. We applied it to IR image sequences including an approaching object. From the experimental results, the proposed method showed successful performance to track object.

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탬플릿 기반 XML 문서 생성기의 설계 및 구현 (A Design and Implementation of XML Document Generator based on Template)

  • 염세훈;방혜자
    • 디지털산업정보학회논문지
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    • 제8권4호
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    • pp.73-81
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    • 2012
  • Web development and Internet technology development bring many kinds of works to web. This is the main reason why XML, document standard is popular. XML in web can be used to express document template or standard. XML with java can be more powerful and general. For example, XML can be used to transmit data and to print data into the screen using Ajax in JSP(Java Server Page) and to make interfaces in android, which is useful to reduce development cycle. However, XML is not easy to learn for the novice. In this paper, we propose the easy and effective way to reduce the learning curve of XML and to make and use XML documents. For the purpose, we suggest template base XML document generation and we design and implement XML document generator based on Template. XML document generator of template-based provides user interface and layout of XML document. So, users can generate XML document easily and effectively.

템플릿을 이용한 자동차 프리핸드 스케치의 3D 모델로 자동변환 (Template-based Automatic 3D Model Generation from Automotive Freehand Sketch)

  • 천상욱;한순흥
    • 한국CDE학회논문집
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    • 제12권4호
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    • pp.283-297
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    • 2007
  • Seamless data integration in the CAx chain of the CAD/CAPP/CAM/CNC has been achieved to a high degree, but research concerning the transfer of data from conceptual sketches to a CAD system should be carried out further. This paper presents a method for reconstructing a 3D model from a freehand sketch. Sketch-based modeling research can be classified into gestural modeling methods and reconstructional modeling methods. This research involves the reconstructional modeling method. Here, Mitani's seminal work, designed for box-shaped 3D model using a predefined template, is improved by leveraging a relational template and specialized for automotive design. Matching between edge graphs of the relational template and the sketch is formulated and solved as the assignment problem using the feature vectors of the edges. Including the stroke preprocessing method required to generate an edge graph from a sketch, necessary procedures and relevant techniques for implementing the template-based modeling method are described. Examples from a working implementation are given.

Comparison of Visual- and Automatic Coregistration with MR Template based ROI Methods for Measurement of Specific Striatal Binding Ratio (SBR) in I-123 IPT SPECT

  • 주라형;서태석;최보영;이형구;김재승;문대혁
    • 대한자기공명의과학회:학술대회논문집
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    • 대한자기공명의과학회 2002년도 제7차 학술대회 초록집
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    • pp.107-107
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    • 2002
  • 목적: I-123 IPT SPECT에서 striatum에 ROI를 설정하여 Strial Binding Ratio를 측정하기 위해 사용되는 육안적인 방법과 MR Template based Coregistration 방법을 비교 평가하였다. 대상 및 방법: 파킨슨씨병 환자(IPD) 15명(남/녀:8/7, 63.3$\pm$4.8세)과 정상인 8명(남/녀:2/6, 61.4$\pm$16.5세) 에서 I-123 IPT(259MBq)를 주사한 후 2시간에 SPECT 영상을 얻었고 미상핵과 조가비핵의 전, 후부 및 후두엽에 각각 육안적인 방법과 MR Template based Coregistration방법으로 ROI를 설정하였다. MR Template based Coregistration 방법은 MNI TIMR template을 이용하여 SPECT영상을 voxel based intensity matching 방법으로 coregistration한 후midthalamic level에서 striatum의 경계를 따라 설정된 ROI를 이용하였다. 육안적인 방법은 striatal uptake가 가장 높은 level에서 3개의 ROI template를 striatum에 위치하였다. 두 방법으로 SBR과 nnterior/posterior ratio of SBR(APR)를 측정하였고 정상인과 파킨슨씨병 환자에서 두 방법을 비교하였다.

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Using the Writing Template provided by the Science Writing Heuristic (SWH) approach for Quality Arguments

  • Choi, Aeran
    • 한국과학교육학회지
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    • 제32권9호
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    • pp.1470-1488
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    • 2012
  • This study examined changes in the quality of written arguments produced by freshman students in general chemistry laboratory classes using the SWH approach over a semester; difference in the quality of written argument between the original writing template (year I) and the extended writing template (year II); and any difference between Total Argument and Holistic Argument scores. 140 writing samples from 14 students on the year I and 228 samples from 19 students on the year II were collected. Results indicated that despite fluctuations, the students were producing stronger argument by the end of semester compared to the beginning of the semester. Original SWH template group received significantly higher argument scores than extended SWH template group. For the most of year I laboratory investigations, there was no significant difference in the quality of argument between Total Argument and Holistic Argument scores. An implication of this study would be to provide opportunities for students to practice constructing arguments using the original SWH writing template including questions, claims, evidence, and reflection.

힐버트 스캔 거리값을 이용한 물체식별 알고리즘 (Object Classification Method using Hilbert Scanning Distance)

  • 최정환;백영민;최진영
    • 전기학회논문지
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    • 제57권4호
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    • pp.700-705
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    • 2008
  • In this paper, we propose object classification algorithm for real-time surveillance system. We have approached this problem using silhouette-based template matching. The silhouette of the object is extracted, and then it is compared with representative template models. Template models are previously stored in the database. Our algorithm is similar to previous pixel-based template matching scheme like Hausdorff Distance, but we use 1D image array rather than 2D regions inspired by Hilbert Path. Transformation of images could reduce computational burden to compute similarity between the detected image and the template images. Experimental results show robustness and real-time performance in object classification, even in low resolution images.

정맥패턴인식을 위한 고속 원형정합 (Fast Template Matching for the Recognition of Hand Vascular Pattern)

  • 최광욱;최환수;표광수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 학술회의 논문집 정보 및 제어부문 B
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    • pp.532-535
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    • 2003
  • In this paper, we propose a new algorithm that can enhance the speed of template matching of hand vascular pattern person verification or recognition system. Various template matching algorithms have advantages in the matching accuracy, but most of the algorithms suffer from computational burden. To reduce the computational amount, with accuracy maintained, we propose following template matching scenario as follows. firstly, original hand vascular image is re-sampled in order to reduce spatial resolution. Secondly, reconstructed image is projected to vertical and horizontal direction, being converted to two one dimensional (1D) data. Thirdly, converted data is used to estimate spatial discrepancy between stored template image and target image. Finally, matching begins from where the estimated order is highest, and finishes when matching decision function is computed to be over certain threshold. We've applied the proposed algorithm to hand vascular pattern identification application for biometrics, and observed dramatic matching speed enhancement. This paper presents detailed explanation of the proposed algorithm and evaluation results.

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