Quaternionic Wavelets for Image Coding

Raphaël Soulard (1) , Philippe Carré (1)

1 SIC

The Quaternionic Wavelet Transform is a recent improvement of standard wavelets that has promising theoretical properties. This new transform has proved its superiority over standard wavelets in texture analysis, so we propose here to apply it in a wavelet based image coding process. The main point is the interpretation and coding of the QWT phase, which is not dealt with in the literature. At equal bitrates, our algorithm performs better visual quality than standard wavelet based method.

Mots clés: Wavelet transforms; 2D Phase; Quaternionic Wavelet Transform; Image coding; Quantization

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]; Traitement des images [eess.IV]; Vision par ordinateur et reconnaissance de formes [cs.CV]

Raphaël Soulard, Philippe Carré. Quaternionic Wavelets for Image Coding. 18th European Signal Processing Conference (EUSIPCO-2010), Aug 2010, Aalborg, Denmark. pp.125--129. ⟨hal-00514423⟩