Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal MATHunesa: Jurnal Ilmiah Matematika
Nirwana Haidar Hari
Unknown Affiliation
Mathematics

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
PERBANDINGAN LEVEL 1 DAN 2 TRANSFORMASI WAVELET DISKRIT UNTUK DENOISING CITRA Umam, Ahmad Khairul; Nirwana Haidar Hari; Joko Prasetyo; Richa Latifatin Nisa'; Elisa Dwi Aprilia
MATHunesa: Jurnal Ilmiah Matematika Vol. 13 No. 2 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The wavelet transform is an improvement of the Fourier transform. The Fourier transform changes the domain from the signal domain to the frequency domain, while the wavelet transform changes the signal domain to the scale (dilation) and translation domains. Discrete wavelet transformation (DWT) can be used to reduce noise in images. In this study, level 1 and 2 DWT methods for image denoising are compared. Lena and Mandrill grayscale test images of 512×512 pixels were used. The wavelets used are Haar, symlets, biorthogonal, coiflets, and Daubechies wavelets. We compare the PSNR value and computation time for Lena and Mandrill images using DWT level 1 and 2. From the research results, the highest PSNR values are for DWT level 2. As for the fastest computation times, they are for DWT level 1.
Co-Authors Elisa Dwi Aprilia Joko Prasetyo Richa Latifatin Nisa'