Title :
Image enhancement based on a nonlinear multiscale method using dual-tree complex wavelet transform
Author :
Sattar, Farook ; Gao, Xinting
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
This paper proposes a new nonlinear multiscale reconstruction method for image enhancement using dual-tree complex wavelet transform. The enhanced image is obtained by successively combining each coarser scale image with the corresponding nonlinearly modified interscale (detail) images. This image enhancement method reduces additive noise while preserves the sharpness of the image. Simulation results show the improved performance of our image enhancement method in comparison with that of the existing methods.
Keywords :
image denoising; image enhancement; image reconstruction; trees (mathematics); wavelet transforms; additive noise; coarser scale image; dual-tree complex wavelet transform; image enhancement; image sharpness; modified interscale image; nonlinear multiscale image reconstruction method; Additive noise; Detectors; Discrete wavelet transforms; Image edge detection; Image enhancement; Image reconstruction; Image resolution; Nonlinear filters; Signal resolution; Wavelet transforms;
Conference_Titel :
Communications, Computers and signal Processing, 2003. PACRIM. 2003 IEEE Pacific Rim Conference on
Print_ISBN :
0-7803-7978-0
DOI :
10.1109/PACRIM.2003.1235881
