|
| << vorige |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 10 van 10 gevonden artikelen
| Titel: |
Unconstrained Optimization Method to Design Two Channel Quadrature Mirror Filter Banks for Image Coding |
| Auteur: |
Anamika Jain, Aditya Goel |
| Verschenen in: |
International journal of image processing |
| Paginering: | Jaargang 5 (2011) nr. 1 pagina's 46-57 |
| Jaar: |
2011 |
| Inhoud: |
This paper proposes an efficient method for the design of two-channel, quadrature mirror filter (QMF) bank for subband image coding. The choice of filter bank is important as it affects image quality as well as system design complexity. The design problem is formulated as weighted sum of reconstruction error in time domain and passband and stop-band energy of the low-pass analysis filter of the filter bank .The objective function is minimized directly, using nonlinear unconstrained method. Experimental results of the method on images show that the performance of the proposed method is better than that of the already existing methods. The impact of some filter characteristics, such as stopband attenuation, stopband edge, and filter length on the performance of the reconstructed images is also investigated. |
| Uitgever: |
Computer Science Journals (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 10 gevonden artikelen
| << vorige |