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An Efficient Image Registration Algorithm Based on Q-Shift Complex Wavelet Transform (Q-Shift CWT)
 
Hala S. Own
National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt
 
 
Abstract :
Shift invariance and directional selectivity are two important transform properties that crucially affected the performance of automatic image registration in the transform domain. Although the non redundant wavelet transform enjoys several desirable properties, it is shift variant and yield distinctions between only three features orientations, horizontal, vertical and diagonal. Using complex wavelet transform, guarantees improve the shift invariance and directional selectivity properties of the transform, thereby enhancing the performance of automatic image registration algorithm that operates in the wavelet transform domain. In this paper we present a robust image registration technique, which employs complex wavelet transform. The experiments show that the automatic image registration algorithm proposed here improves the computational efficiency and yields robust and consistent image registration compared with other types wavelet transform.

Keywords: Image Registration, Multiresolution Entropy, Mutual Information, complex wavelet transform, Control Point Extraction, Q-shift dual tree complex wavelet transform , and Astronomical data.

Biography:

Hala Shawky Own received her B.Sc. with honors in 1988 and M.Sc. degree in 1995, both from Ain Shams Univesrity, Faculty of Science, Pure Mathematics and Computer Science Department, Cairo, Egypt. On 2003, she received her Ph..D. degree in the filed of image processing, from Masnoura university, Faculty of Science, Computer Science Department, Mansoura, Egypt. Currently, she is an assistance researcher at National Research Institute of Astronomy and geophysics (NRIARG), Helwan , Egypt . Her research interests are in the areas of, rough set theory, wavelet theory, medical image analysis, astronomical image analysis.

BibTex:

 @ARTICLE{P1150442002,

AUTHOR = {Hala S. Own},

TITLE = {An Efficient Image Registration Algorithm Based on Q-Shift Complex Wavelet Transform (Q-Shift CWT)},

JOURNAL = {ICGST International Journal on Graphics, Vision and Image Processing},

YEAR = {2005},

MONTH={Jan},

VOLUME = {05},

ISSUE={2},

PAGES={9--15}

}

( Full paper 290 KB)