Contrast enhancement of radiographs using shift invariant wavelet transform |
| |
Authors: | Yang Yan Zhang Dong |
| |
Institution: | (1) College of Electronics Information, Wuhan University, 430072 Wuhan, China |
| |
Abstract: | A novel approach using shift invariant wavelet transform is presented for the contrast enhancement of radiographs. By exploiting
cross-scale correlation among wavelet coefficients, edge information of radiographic images is extracted and protected, while
noise is smoothed out in the wavelet domain. Radiographs are then reconstructed from the transform coefficients modified at
multi-scales by nonlinear enhancement operator. The method can achieve effectively contrast enhancement and edge-preserved
denoising simultaneously, yet it is capable of giving visually distinct images and offering considerable benefits in medical
diagnosis.
Biography: YANG, Yan (1964-), female, lecturer. Research direction, image processing, wavelet analysis and its application. |
| |
Keywords: | shift invariant wavelet transform nonlinear enhancement edge detection denoising |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|