Comparative analysis of image denoising methods based on wavelet transform and threshold functions

L Lin, L Feng - International Journal of Engineering, 2017 - ije.ir
There are many unavoidable noise interferences in image acquisition and transmission. To
make it better for subsequent processing, the noise in the image should be removed in …

[PDF][PDF] A sub-band adaptive visushrink in wavelet domain for image denoising

M Laavanya, V Vijayaraghavan - International Journal of Recent …, 2019 - researchgate.net
A novel sub-band adaptive Visushrink approach in wavelet domain for image denoising, is
proposed. In the transformed noisy image, the variance of wavelet coefficients will not be …

Duck egg sexing by eccentricity determination using image processing

G Mappatao - Journal of Telecommunication, Electronic and …, 2018 - jtec.utem.edu.my
Manual duck egg sexing is practiced in the Philippines for a long time now. The method
used was established on the proposition that the male duck eggs are elongated while the …

[PDF][PDF] Image enhancement using an adaptive un-sharp masking method considering the gradient variation

Z Mortezaie, H Hassanpour… - International Journal of …, 2017 - researchgate.net
Technical limitations in image capturing usually impose defect, such as contrast
degradation. There are different approaches to improve the contrast of an image. Among the …

Nonthreshold Method of the Discrete Wavelet Filtering of Images

D Onufriienko, Y Taranenko - Cybernetics and Systems Analysis, 2022 - Springer
Modern DWT filtering methods and algorithms for removing the high-level Gaussian noise
from images are considered. It is stated that Gaussian noise can occur during aerial …

An adaptive hierarchical method based on wavelet and adaptive filtering for mri denoising

V Hajihashemi, K Borna - International Journal of Engineering, 2016 - ije.ir
MRI is one of the most powerful techniques to study the internal structure of the body. MRI
image quality is affected by various noises. Noises in MRI are usually thermal and mainly …

Dnipro, Ukraine

D Onufriienko, Y Taranenko - kibernetika.org
Modern methods and algorithms for DWT image filtering from high-level Gaussian noise are
considered. It is indicated that these noises can occur during aerial photography under air …

БЕЗПОРОГОВИЙ МЕТОД ДИСКРЕТНОЇ ВЕЙВЛЕТ-ФІЛЬТРАЦІЇ ЗОБРАЖЕНЬ.

ДМ Онуфрієнко… - Cybernetics & Systems …, 2022 - search.ebscohost.com
Розглянуто сучасні методи й алгоритми DWТrфільтраці¿ зображень від Гаусоr вих
шумів високого рівня. Зазначено, що ці шуми можуть виникати під час аерофоr …

Sampling Rate Conversion in the Discrete Linear Canonical Transform Domain

Z Zhuo, N Zhong - International Journal of Engineering, 2016 - ije.ir
Sampling rate conversion (SRC) is one of important issues in modern sampling theory. It can
be realized by up-sampling, filtering, and down-sampling operations, which need large …

[PDF][PDF] Quasi Noise Removal using Frequency Dependent Notch Filter

M Tech, J GGITS - 2016 - ijairjournal.in
Generally, the nature of noise is random and can be removed using both static and adaptive
filters. Quasi-periodic noise may leave some effect on images. This artefact is often caused …