Title :
On phase statistics of complexwavelet coefficients at edges
Author :
Rakvongthai, Yothin ; Oraintara, Soontorn
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas Arlington, Arlington, TX, USA
Abstract :
We investigate the phase information in the dual-tree complex wavelet transform (DT-ℂWT) framework. The probability density function (pdf) of the phase of a complex wavelet coefficient is derived for the edge-type input. A simple method to estimate the parameters of the pdf is presented. The simulation results confirm that the results are consistent with the actual coefficients for both synthetic input and natural images.
Keywords :
edge detection; probability; wavelet transforms; complex wavelet coefficient; dual-tree complex wavelet transform; edge-type input; phase information; phase statistics; probability density function; Abstracts;
Conference_Titel :
Signal Processing Conference, 2008 16th European
Conference_Location :
Lausanne
