• Title/Summary/Keyword: Fingerprint scheme

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Robust Fingerprint Verification By Selective Ridge Matching (선택적 융선 정합에 의한 강건한 지문 인증기법)

  • Park, Young-Tae
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.37 no.5
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    • pp.1-8
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    • 2000
  • Point pattern matching schemes for finger print recognition do not guarantee robust matching performance for fingerprint Images of poor quality We present a finger print recognition scheme, where transformation parameters of matched ridge pairs are estimated by Hough transform and the matching hypothesis is verified by a new measure of the matching degree using selective directional information Proposed method may exhibit extremely low FAR(False accept rate) while maintaining low reject rate even for the Images of poor quality because of the robustness to the variation of minutia points.

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A Robust Video Fingerprinting Algorithm Based on Centroid of Spatio-temporal Gradient Orientations

  • Sun, Ziqiang;Zhu, Yuesheng;Liu, Xiyao;Zhang, Liming
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.7 no.11
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    • pp.2754-2768
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    • 2013
  • Video fingerprints generated from global features are usually vulnerable against general geometric transformations. In this paper, a novel video fingerprinting algorithm is proposed, in which a new spatio-temporal gradient is designed to represent the spatial and temporal information for each frame, and a new partition scheme, based on concentric circle and rings, is developed to resist the attacks efficiently. The centroids of spatio-temporal gradient orientations (CSTGO) within the circle and rings are then calculated to generate a robust fingerprint. Our experiments with different attacks have demonstrated that the proposed approach outperforms the state-of-the-art methods in terms of robustness and discrimination.

Circuit Design for Compesation of a Dry Fingerprint Image Quality on Charge Sharing Scheme (전하분할 방식의 건조 지문이미지 보상회로 설계)

  • Jung, Seung-Min;Yeo, Hyeop-Goo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.795-797
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    • 2013
  • This paper describes a charge sharing capacitive-sensing circuit technique that improves the quality of images captured with fingerprint sensor LSIs. When the finger is dry, the electrical resistance of a finger surface is high. It leads to poor image quality. To capture clear images even when the finger is dry, the modified capacitive detection circuit improves the image quality using an enhancement plate at the finger surface and a voltage control circuit. The test circuit is analyzed on $0.35{\mu}m$ CMOS process.

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Frequency-Temporal Filtering for a Robust Audio Fingerprinting Scheme in Real-Noise Environments

  • Park, Man-Soo;Kim, Hoi-Rin;Yang, Seung-Hyun
    • ETRI Journal
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    • v.28 no.4
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    • pp.509-512
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    • 2006
  • In a real environment, sound recordings are commonly distorted by channel and background noise, and the performance of audio identification is mainly degraded by them. Recently, Philips introduced a robust and efficient audio fingerprinting scheme applying a differential (high-pass filtering) to the frequency-time sequence of the perceptual filter-bank energies. In practice, however, the robustness of the audio fingerprinting scheme is still important in a real environment. In this letter, we introduce alternatives to the frequency-temporal filtering combination for an extension method of Philips' audio fingerprinting scheme to achieve robustness to channel and background noise under the conditions of a real situation. Our experimental results show that the proposed filtering combination improves noise robustness in audio identification.

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A Study of a High Performance Capacitive Sensing Scheme Using a Floating-Gate MOS Transistor

  • Jung, Seung-Min
    • Journal of information and communication convergence engineering
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    • v.10 no.2
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    • pp.194-199
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    • 2012
  • This paper proposes a novel scheme of a gray scale fingerprint image for a high-accuracy capacitive sensor chip. The conventional grayscale image scheme uses a digital-to-analog converter (DAC) of a large-scale layout or charge-pump circuit with high power consumption and complexity by a global clock signal. A modified capacitive detection circuit for the charge sharing scheme is proposed, which uses a down literal circuit (DLC) with a floating-gate metal-oxide semiconductor transistor (FGMOS) based on a neuron model. The detection circuit is designed and simulated in a 3.3 V, 0.35 ${\mu}m$ standard CMOS process. Because the proposed circuit does not need a comparator and peripheral circuits, the pixel layout size can be reduced and the image resolution can be improved.

A Study on Average Range Setting in Adaptive KNN of WiFi Fingerprint Location Estimation Method (WiFi 핑거프린트 위치추정 방식의 적응형 KNN에서 평균 범위 설정에 관한 연구)

  • Oh, Jongtaek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.18 no.1
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    • pp.129-134
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    • 2018
  • Research on the technique for estimating the indoor position has been actively carried out. In particular, the WiFi fingerprint method, which does not require any additional infrastructure, is being partially used because of its high economic efficiency. The KNN method which estimates similar points to the corresponding points by comparing intensity information of the WLAN reception signal measured at various points in advance with intensity information measured at a specific point in the future is simple but has a good performance. However, in the conventional KNN scheme, since the number K of average candidate positions is constant, there is a problem that the position estimation error is not optimized according to a specific point. In this paper, we proposed an algorithm that adaptively changes the K value for each point and applied it to experimental data and evaluated its performance.

Fingerprint-Based 1-out-of-n Access Control Technique for Media Service Protection in IPTV Broadcasting System (IPTV의 미디어 서비스 보호를 위한 지문 인식 기반의 1-out-of-n 접근 통제 기법)

  • Lee, Ji-Seon;Rhee, Hyun-Sook;Kim, Hyo-Dong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.4B
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    • pp.687-694
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    • 2010
  • IPTV(Internet Protocol Television) is an emerging technology in which telecommunication and broadcasting technologies are converged. IPTV service providers usually multicast scrambled contents. And only legitimate subscribers who pass the access control can de-scramble and use the contents. In order to ensure revenues, providers oftentimes employ password-based authentication protocols that ensure secure authentication processes between set-top box and smart card. In this paper, we propose a fingerprint-based 1-out-of-n authentication protocol which provides convenient and more secure authentication process in some organizational environments. The proposed scheme shows that only those who provide legitimate fingerprint information can be authenticated even in a situation that both password and smart card are compromised.

Video Fingerprinting System through Zero-based Code Modulation Technique (제로기반 코드 변조 기법을 통한 비디오 핑거프린팅 시스템)

  • Choi Sun Young;Lee Hae-Yeoun;Kang In Koo;Lee Heung-Kyu
    • The KIPS Transactions:PartB
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    • v.12B no.4 s.100
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    • pp.443-450
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    • 2005
  • Digital fingerprinting is a contents-protection technique, where customer information is inserted into digital contents. Fingerprinted contents undergo various attacks. Especially, attackers can remove easily the inserted fingerprint by collusion attacks, because digital fingerprinting inserts slightly different codes according to the customers. Among collusion attacks, averaging attack is a simple, fast, and efficient attack. In this paper, we propose a video fingerprinting system that is robust to the averaging attack. In order to achieve code efficiency and robustness against the averaging attack, we adopt anti-collusion code (fingerprint code) from GD-PBIBD theory. When the number of users is increased, the size of fingerprint code also grows. Thus, this paper addresses a zero-based code modulation technique to embed and detect this fingerprint code efficiently. We implemented a blind video fingerprinting system based on our proposed technique and performed experiments on various colluding cases. Based on the results, we could detect most of colluders. In the worst case, our scheme could trace at least one colluder successfully.

Enhanced ID-based Authentication Scheme using Smartcards and Fingerprints (스마트카드와 지문을 이용한 강화된 ID기반의 인증 기법)

  • Jeon Il-Soo;Kim Hyun-Sung
    • The KIPS Transactions:PartC
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    • v.12C no.7 s.103
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    • pp.959-964
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    • 2005
  • Recently, Kim et al. proposed ID-based authentication schemes using smartcards and fingerprints. However, Scott showed that they were vulnerable to the passive eavesdropping attack. Thereby, this paper proposes an enhanced ID-based authentication scheme to solve the problems in Kin et al. scheme. Especially, the proposed scheme solves the ID repairability problem commonly shared in the previous ID based Cryptosystems. The proposed ID-based authentication scheme supports the advantages in the previous ID-based authentication scheme and solves the problems in them effectively.

IoT-based Indoor Localization Scheme (IoT 기반의 실내 위치 추정 기법)

  • Kim, Tae-Kook
    • Journal of Internet of Things and Convergence
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    • v.2 no.4
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    • pp.35-39
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    • 2016
  • This paper is about IoT(Internet of Things)-based indoor localization scheme. GPS and WiFi are widely used to estimate the location of things. However, GPS has drawback of poor reception and radio disturbance in doors. To estimate the location in WiFi-based method, the user collects the information by scanning nearby WiFi(s) and transferring the information to WiFi database server. This is a fingerprint method with disadvantage of having an additional DB server. IoT is the internetworking of things, and this is on rapid rise. I propose the IoT-based indoor localization scheme. Under the proposed method, a device internetworking with another device with its own location information like GPS coordinate can estimate its own location through RSSI. With more devices localizing its own, the localization accuracy goes high. The proposed method allows the user to estimate the location without GPS and WiFi DB server.