National Dong Hwa University

Displaying 1-8 of 8 results

  • White Papers // Dec 2012

    Combining Speeded-Up Robust Features with Principal Component Analysis in Face Recognition System

    In this paper, a robust face recognition scheme is proposed. Speeded-Up Robust Features algorithm is used for extracting the feature vectors with scale invariance and pose invariance from face images. Then PCA is introduced for projecting the SURF feature vectors to the new feature space as PCA-SURF local descriptors. Finally,...

    Provided By National Dong Hwa University

  • White Papers // Jul 2012

    New Findings on RFID Authentication Schemes Against De-Synchronization Attack

    In order to protect privacy of RFID tag against malicious tag tracing activities, most RFID authentication protocols support forward/backward security properties by updating the same secret values held at both tag end and database end asynchronously during each authentication session. In this paper, the authors first categorize existing authentication protocols...

    Provided By National Dong Hwa University

  • White Papers // May 2012

    MR-Chord: A Scheme for Enhancing Chord Lookup Accuracy and Performance in Mobile P2P Network

    In the recent years, Peer-To-Peer (P2P) sharing network has become very popular in the Internet. However, most P2P protocols are designed for traditional wired networks. When deployed in wireless network environment, many challenges are encountered. For instance, the nodes in an unstable wireless network tend to leave or rejoin the...

    Provided By National Dong Hwa University

  • White Papers // May 2011

    An Error Resilient Technique Using Reversible Data Embedding in H.264/AVC

    An Error Resilient technique using reversible data embedding in H.264/AVC aiming at high quality recovery under high loss rate is proposed. For compressed videos, predictive coding techniques increase the dependency between frames. When error occurs, it may propagate to other frames. In H.264/AVC, in order to achieve higher compression ratio,...

    Provided By National Dong Hwa University

  • White Papers // Apr 2011

    Using Gradient Features from Scale-Invariant Keypoints on Face Recognition

    In this paper, an algorithm which combines Principal Component Analysis (PCA), Scale Invariant Feature Transform (SIFT) and gradient features to face recognition is proposed. The feature vectors invariant to image scaling and rotation are firstly extracted by SIFT with a different local gradient descriptor. And PCA is applied to the...

    Provided By National Dong Hwa University

  • White Papers // Nov 2010

    A Comprehensive Survey of Multicast Routing Protocols for Mobile Ad Hoc Networks

    MANETs are considered to be an important network type in the near future. Nodes in MANETs are often collaborative for a particular task and have limited power. Multicasting can efficiently support data transmissions and thus is very suitable for MANETs. There have been a number of multicast routing protocols which...

    Provided By National Dong Hwa University

  • White Papers // Nov 2010

    Efficient Routing and Centralized Scheduling Algorithms for IEEE 802.16 Mesh Networks

    An IEEE 802.16 wireless system can provide broadband wireless access to subscriber stations and operate in mesh mode. The communication between a subscriber station and a base station can pass through one or more intermediate subscriber stations. The IEEE 802.16 standard provides a centralized scheduling mechanism that supports contention-free and...

    Provided By National Dong Hwa University

  • White Papers // Jul 2009

    An Efficient Two-phase Spam Filtering Method Based on E-mails Categorization

    The e-mail's header session usually contains important attributes such as e-mail title, sender's name, sender's e-mail address, sending date, which are helpful to classification of e-mails. In this paper, the authors apply decision tree data mining technique to header's basic attributes to analyze the association rules of spam e-mails and...

    Provided By National Dong Hwa University

  • White Papers // Dec 2012

    Combining Speeded-Up Robust Features with Principal Component Analysis in Face Recognition System

    In this paper, a robust face recognition scheme is proposed. Speeded-Up Robust Features algorithm is used for extracting the feature vectors with scale invariance and pose invariance from face images. Then PCA is introduced for projecting the SURF feature vectors to the new feature space as PCA-SURF local descriptors. Finally,...

    Provided By National Dong Hwa University

  • White Papers // Jul 2012

    New Findings on RFID Authentication Schemes Against De-Synchronization Attack

    In order to protect privacy of RFID tag against malicious tag tracing activities, most RFID authentication protocols support forward/backward security properties by updating the same secret values held at both tag end and database end asynchronously during each authentication session. In this paper, the authors first categorize existing authentication protocols...

    Provided By National Dong Hwa University

  • White Papers // May 2011

    An Error Resilient Technique Using Reversible Data Embedding in H.264/AVC

    An Error Resilient technique using reversible data embedding in H.264/AVC aiming at high quality recovery under high loss rate is proposed. For compressed videos, predictive coding techniques increase the dependency between frames. When error occurs, it may propagate to other frames. In H.264/AVC, in order to achieve higher compression ratio,...

    Provided By National Dong Hwa University

  • White Papers // Apr 2011

    Using Gradient Features from Scale-Invariant Keypoints on Face Recognition

    In this paper, an algorithm which combines Principal Component Analysis (PCA), Scale Invariant Feature Transform (SIFT) and gradient features to face recognition is proposed. The feature vectors invariant to image scaling and rotation are firstly extracted by SIFT with a different local gradient descriptor. And PCA is applied to the...

    Provided By National Dong Hwa University

  • White Papers // Nov 2010

    A Comprehensive Survey of Multicast Routing Protocols for Mobile Ad Hoc Networks

    MANETs are considered to be an important network type in the near future. Nodes in MANETs are often collaborative for a particular task and have limited power. Multicasting can efficiently support data transmissions and thus is very suitable for MANETs. There have been a number of multicast routing protocols which...

    Provided By National Dong Hwa University

  • White Papers // Nov 2010

    Efficient Routing and Centralized Scheduling Algorithms for IEEE 802.16 Mesh Networks

    An IEEE 802.16 wireless system can provide broadband wireless access to subscriber stations and operate in mesh mode. The communication between a subscriber station and a base station can pass through one or more intermediate subscriber stations. The IEEE 802.16 standard provides a centralized scheduling mechanism that supports contention-free and...

    Provided By National Dong Hwa University

  • White Papers // May 2012

    MR-Chord: A Scheme for Enhancing Chord Lookup Accuracy and Performance in Mobile P2P Network

    In the recent years, Peer-To-Peer (P2P) sharing network has become very popular in the Internet. However, most P2P protocols are designed for traditional wired networks. When deployed in wireless network environment, many challenges are encountered. For instance, the nodes in an unstable wireless network tend to leave or rejoin the...

    Provided By National Dong Hwa University

  • White Papers // Jul 2009

    An Efficient Two-phase Spam Filtering Method Based on E-mails Categorization

    The e-mail's header session usually contains important attributes such as e-mail title, sender's name, sender's e-mail address, sending date, which are helpful to classification of e-mails. In this paper, the authors apply decision tree data mining technique to header's basic attributes to analyze the association rules of spam e-mails and...

    Provided By National Dong Hwa University