Title :
A method of medical image enhancement using wavelet analysis
Author :
Tsai, Du-Yih ; Lee, Yongbum ; Sekiya, Masaru ; Sakaguchi, So ; YAMADA, Isao
Author_Institution :
Dept. of Radiol. Technol., Niigata Univ., Japan
Abstract :
The paper presents a wavelet-based method for medical image enhancement. A transfer function is derived for transferring wavelet coefficients at various multiresolution levels with different weighting values. Applications of the method to digital radiographic images of chest X-rays are shown. Moreover, in order to validate the effectiveness of the proposed method, we compare the results obtained using the wavelet analysis method to that using the conventional fast Fourier transform (FFT) method. The results show that the proposed method is superior to the FFT method in terms of image enhancement.
Keywords :
fast Fourier transforms; image enhancement; medical image processing; transfer functions; wavelet transforms; FFT; chest X-rays; digital radiographic images; fast Fourier transform; medical image enhancement; transfer function; wavelet analysis; wavelet coefficients; Biomedical imaging; Fast Fourier transforms; Image analysis; Image enhancement; Radiographic image enhancement; Radiography; Transfer functions; Wavelet analysis; Wavelet coefficients; X-rays;
Conference_Titel :
Signal Processing, 2002 6th International Conference on
Print_ISBN :
0-7803-7488-6
DOI :
10.1109/ICOSP.2002.1181158
