Archives and Documentation Center
Digital Archives

Browsing by Author "Mıhçak, Mehmet Kıvanç."

Browsing by Author "Mıhçak, Mehmet Kıvanç."

Sort by: Order: Results:

  • A learning framework for robust hashing of face images 
    Şenel, Kamil. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Robust image hashing has been actively researched over the last decade with varied applications in image content authentication and identification under distortions. In the existing literature on robust image hashing, hash ...
  • A steady state analysis of competitive prediction using LMMN combination 
    Soysal, Betül. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this thesis, the adaptive linear prediction of autoregressive signals under additive Gaussian noise model is investigated in a competitive algorithm framework. In this framework, there is a comparison class of predictors ...
  • Broadband power-line noise modeling and compensation 
    Güzel, Tayyar. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Broadband power-line communication (BPLC) has become more popular in the Smart Grid context as it allows broadband access, media sharing, automated meter reading etc. However, it still remains as a challenging task to ...
  • Communication theoretic analysis of digital fingerprinting under linear averaging Gaussian attack 
    Dalkılıç, Özgür. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, performance of correlation detector is investigated from a communication theoretic perspective for additive fingerprinting under Gaussian averaging attack. First, digital fingerprinting problem is modeled ...
  • Design and construction of a secure ID-card system using robust image hashing 
    Öztemel, Mehmet. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    We present a very simple, cryptographically secure, inexpensive and contactless biometric identity veri cation system. The system we propose is a printout of individual's biometric feature (pictorial data) such as face, ...
  • Detecting denial of service attacks in network traffic with maximum entropy and hypothesis testing techniques 
    Çakırtaş, Didem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    With the growth of computer networking and increased dependency of our every day life on the computer based systems, assuring reliable operation of computer systems has become very important. In order to render computer ...
  • Detecting intrusions in network traffic using maximum entropy technique 
    Tuna, Ömer Faruk. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    As interconnections among computer systems grow rapidly, network security is becoming a major challenge. Computer networks have to be protected against denial-ofservice (DoS) attacks, unauthorized disclosure of information ...
  • Detection with partial information for the Gaussian setup in the potential presence of a jammer 
    Özyeşil, Onur. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    We introduce the problem of communication with partial information, where there is an asymmetry between the transmitter and the receiver codebooks. We study this setup in a binary detection theoretic context for the additive ...
  • Generalized improved spread spectrum watermarking robust against translation attacks 
    Gerek, Neslihan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this work, we consider the ISS (improved spread spectrum) watermarking framework, and propose a generalized version of it, termed "generalized improved spread spectrum" (GISS), where we achieve both host-interference ...
  • Information theoretic cryptanalysis and reliable communications under codebook mismatch 
    Altuğ, Yücel. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this thesis, usage of typicality in two diffrent concepts is investigated. In the first concept, a new approach on cryptanalysis is proposed where the goal is to explore the fundamental limits of a specific class of ...
  • Optimum quantization for detection with side information 
    Ayerden, Nafiz Polat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this work, we considered the problem of binary detection with side information. The receiver, observes the transmitted data which is corrupted by Gaussian noise, and tries to make a decision between two hypotheses where ...
  • Pure tone audiometer design 
    Arpat, Yusuf. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2009., 2009.)
    Audiometry ia a technique which is used to measure where the hearing deficit stems from in aural way and whwt the degree of severity of deficit is. This thesis work basically focused on a prototype of pure tone audiometer ...
  • Robust speech hashing 
    Şahin, Ekin Olcan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, a robust speech hashing algorithm is proposed and performance of this speech hashing algorithm is compared with several robust audio hashing algorithms. We use phone based frequency-time domain analysis for ...
  • Super-resolution spectral estimation methods for buried and through-the-wall object detection 
    Özdemir, Erman. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Seeing the targets behind and inside visually opaque obstacles such as walls using microwave signals is considered as a powerful tool for a variety of applications in both military and commercial paradigms. The ultimate ...
  • True random number generation via sampling from band-limited Gaussian processes 
    Gov, Necmettin Caner. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    A true random number generator topology based on regular sampling of an "irregular" process is considered, which is obtained via thresholding a continuoustime Gaussian (normal) process, of which spectrum is assumed to be ...
  • Watermarking algorithm based on modified non-negative matrix factorization 
    Kayacan, Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Non-negative matrix factorization has become a significant area of research within the last 10 years. After the research paper ”Learning the parts of objects by non-negative matrix factorization” by Daniel D. Lee & H. ...
  • Wheeze detection in respiratory sounds via statistical signal modeling 
    Aydöre, Sergül. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The aim of this study is detection of wheeze and non-wheeze epochs within respiratory sound signals acquired from patients with asthma and COPD. Since a wheeze signal, having a sinusoidal waveform, has a different behavior ...

Search Digital Archive

Browse

My Account