Noise cancellation techniques applied to EEG using single or more sweeps

Yenigün, Burak


Noise reduction using 2D Anisotropic Diffusion Filter in inverse electrocardiography
Mazloumi Gavgani, A.; Serinağaoğlu Doğrusöz, Yeşim (2014-01-01)
Noise in biomedical measurements has a negative effect on the accuracy of the solutions obtained. Therefore various filtering methods have been proposed in literature to reduce the effects of noise. In our previous studies we have demonstrated the application of one dimensional Anisotropic Diffusion Filter (ADF) to suppress the effects of measurement and geometric noise in body surface potential measurements (BSPM) with the goal of improving the corresponding solutions of the inverse problem of electrocardi...
Noise Estimation for Hyperspectral Imagery using Spectral Unmixing and Synthesis
DEMİRKESEN, CAN; Leloğlu, Uğur Murat (2014-09-25)
Most hyperspectral image (HSI) processing algorithms assume a signal to noise ratio model in their formulation which makes them dependent on accurate noise estimation. Many techniques have been proposed to estimate the noise. A very comprehensive comparative study on the subject is done by Gao et al. [1]. In a nut-shell, most techniques are based on the idea of calculating standard deviation from assumed-to-be homogenous regions in the image. Some of these algorithms work on a regular grid parameterized wit...
Noise path identification for vibro-acoustically coupled structures
Şerafettinoğlu, A. Hakan; Çalışkan, Mehmet; Department of Mechanical Engineering (2004)
Structures of machinery with practical importance, such as home appliances or transportation vehicles, can be considered as acoustically coupled spaces surrounded by elastic enclosures. When the structures of machinery are excited mechanically by means of prime movers incorporated into these structures through some elastic connections, generation of noise becomes an inevitable by-product. For noise control engineering purposes, a thorough understanding of emission, transmission and radiation of sound from s...
Noise reduction in high dynamic range imaging
Akyüz, Ahmet Oğuz (Elsevier BV, 2007-10-01)
A common method to create high dynamic range (HDR) images is to combine several different exposures of the same scene. In this approach, the use of higher ISO settings will reduce exposure times, and thereby the total capture time. This is advantageous in certain environments where it may help minimize ghosting artifacts. However, exposures taken at high sensitivity settings tend to be noisy, which is further amplified by the HDR creation algorithm. We present a robust and efficient technique to significant...
Noise reduction in time-frequency domain
Kalyoncu, Özden; SÜnver, Zafer; Department of Electrical and Electronics Engineering (2007)
In this thesis work, time-frequency filtering of nonstationary signals in noise using Wigner-Ville Distribution is investigated. Continuous-time, discrete-time and discrete Wigner Ville Distribution definitions, their relations, and properties are given. Time-Frequency Peak Filtering Method is presented. The effects of different parameters on the performance of the method are investigated, and the results are presented. Time-Varying Wiener Filter is presented. Using simulations it is shown that the performa...
Citation Formats
B. Yenigün, “Noise cancellation techniques applied to EEG using single or more sweeps,” Middle East Technical University, 2000.