Naslov
EDUCATIONAL SOFTWARE TOOL FOR DIFFERENT WAVELET BASED METHODS: WAVDEC

Autori
Dumić, Emil ; Havaš, Ladislav ; Srpak, Dunja

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
EDULEARN19 Proceedings / Gómez Chova, L ; López Martínez, A ; Candel Torres, I - Palma de Mallorca : International Academy of Technology, Education and Development (IATED), 2019, 3495-3503

ISBN
978-84-09-12031-4

Skup
11th Annual International Conference of Education and New Learning Technologies (EDULEARN19)

Mjesto i datum
Palma de Mallorca, Španjolska, 01.07.2019. - 03.07.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Educational tool, wavelet methods, Wavdec, signal processing, image quality.

Sažetak
In this paper Matlab-based application-GUI "Wavdec" is presented, serving as educational tool for different signal processing courses. Wavdec analyses an image into different wavelet subbands, using three different wavelet decomposition/reconstruction methods: Discrete Wavelet Transform (DWT), Quincunx transform and Steerable Pyramid Wavelet Transform (SPWT). Different levels and wavelet types for each method can be chosen. Also, Gaussian noise with manually defined mean and variance can be added to the original image. Hard thresholding, which either keeps or removes values of coefficients, for each subband can be defined arbitrarily. Thus, Wavdec can be used in different scenarios, for example to demonstrate scalable image compression or noise removal. Finally, Wavdec application automatically calculates image quality between original and reconstructed image using three image quality measures as well as their compression ratio. Finally, the effects of using the described original developed tool on education of electrical engineering students have been disclosed.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA