Title :
Use of M-band wavelet transform for multidirectional and multiscale edge detection
Author :
Aydin, Turgut ; Yemez, Y. ; Sankur, Bülent ; Anarim, Emin ; Alkin, Oktay
Author_Institution :
Dept. of Electr. & Electron. Eng., Bogazici Univ., Istanbul, Turkey
Abstract :
The problem of directional and multiscale edge detection is considered. Orthogonal and linear-phase M-band wavelet transform is used to decompose the image into channels which correspond to different directions and resolution levels. “Meaningful” combinations of the synthesis filter outputs at the selected channels yield edge maps with desired properties. In addition, with the application of energy operators at the analysis stage, it is possible to obtain a reduction in unwanted zero-crossings. Final edge maps of images are obtained through simple combinations of directional edge maps
Keywords :
edge detection; filtering theory; image resolution; wavelet transforms; channels; directional edge maps; energy operators; image analysis; image resolution; linear-phase M-band wavelet transform; multidirectional edge detection; multiscale edge detection; orthogonal M-band wavelet transform; synthesis filter outputs; zero-crossings reduction; Band pass filters; Discrete wavelet transforms; Energy resolution; Hydrogen; Image edge detection; Information filtering; Low pass filters; Signal resolution; Smoothing methods; Wavelet transforms;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389522
