Filters
Image interpolation using directional image representations
This article deals with image interpolation using two different transform methods. Method is based on the wavelet transform where the matrix of approximation coefficients is replaced by an image of low resolution and thresholding wh...
JA - Elektronika a optoelektronika, elektrotechnika
- 2011 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Using Median Filter for Modify Wavelet Coefficients of Decomposed ECG Signal
the decomposition are wavelet coefficients thresholded. The value of the threshold can be set automatically. It emerged that algorithm for auto-valued threshold based on median filtter give good results in viewpoi...
JA - Elektronika a optoelektronika, elektrotechnika
- 2004 •
- D
Rok uplatnění
D - Stať ve sborníku
Wavelet filtering with median thresholds
The basic ideas behind wavelets transform for denoising of electrocardiograms (ECG) are explained. New median tresholding method is used to established values for soft and hard thresholding of wavelets coefficients......
BO - Biofyzika
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Power Spectral Density Noise Estimation using Wavelet Transform in Spectral Domain
. Then the thresholds used for the wavelet transform coefficients in dependence on the level are calculated. To threshold the wavelet transform coefficients soft thesholding is used variance the proposed method use...
JA - Elektronika a optoelektronika, elektrotechnika
- 2007 •
- D
Rok uplatnění
D - Stať ve sborníku
Adaptive Thresholding of DFT Coefficients based on Probability Distribution of Additive Noise
the thresholding of coefficients of Discrete Fourier transform (DFT). Minimal signalThe proposed method of adaptive thresholding uses probability distribution of additive noise signal, by which the input signal is corrupte...
JA - Elektronika a optoelektronika, elektrotechnika
- 2010 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Test jig for evaluation of radiation induced changes of PMOS transistors temperature coefficients
A prototype of test jig for evaluation of radiation induced changes of PMOS transistors threshold voltage temperature coefficient has been built and initial successful experiments have been completed. While the transistor characteri...
JA - Elektronika a optoelektronika, elektrotechnika
- 2014 •
- Gfunk •
- Link
Rok uplatnění
Gfunk - Funkční vzorek
Výsledek na webu
Discrete Wavelet Transform in Biomedical Noise Reduction
reduction is realized through thresholding the detail coefficients prior to image reconstruction. Our further studies are focused on the shape of the thresholding function into a set of approximation and detail coeffic...
JD - Využití počítačů, robotika a její aplikace
- 2008 •
- D
Rok uplatnění
D - Stať ve sborníku
Denoising of ECG with Wavelet Transform and Median Thresholds
The basic ideas behind wavelets transform for denoising of electrocardiograms (ECG) are explained. New median tresholding method is used to established values for soft and hard thresholding of wavelets coefficients....
FS - Lékařská zařízení, přístroje a vybavení
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Ideal Choice of an Orthogonal Basis from a Library of Bases for Denoising
deviation ? and of Donoho-Johnstone sure threshold ? for the wavelet coefficients. The entropy is defined by the discrete distribution of squared wavelet coefficients. The Donoho threshold belongs to the simplest ...
JB - Senzory, čidla, měření a regulace
- 2003 •
- D
Rok uplatnění
D - Stať ve sborníku
Origin and Suppression of Musical Tonal Noise in Thresholding Methods
In the article, the method for noise reduction via thresholding of discrete Fourier transform coefficients is proposed. The most common sound artifact, a musical tonal noise is presented and a system for identification and suppressi...
JA - Elektronika a optoelektronika, elektrotechnika
- 2010 •
- D
Rok uplatnění
D - Stať ve sborníku
- 1 - 10 out of 23 368