Filtering and contrast enhancement of medical ultrasonic image.
- Author:
Ke CHEN
1
;
Jiangli LIN
;
Deyu LI
;
Tianfu WANG
Author Information
1. Department of Biomedical Engineering of Sichuan University, Chengdu 610065, China.
- Publication Type:Journal Article
- MeSH:
Algorithms;
Anisotropy;
Humans;
Image Enhancement;
Image Processing, Computer-Assisted;
methods;
Signal Processing, Computer-Assisted;
Ultrasonography;
methods
- From:
Journal of Biomedical Engineering
2007;24(2):434-438
- CountryChina
- Language:Chinese
-
Abstract:
Lower contrast and speckle noise are the main reasons which decline the quality of medical ultrasonic images. In this paper, a new method is proposed to filter the speckle noises and enhance the contrast simultaneously. Anisotropic diffusion filtering method was firstly applied to filter images. Then the loss of information, which the contrast function of contrast enhancement model lies on, was obtained. Finally, the contrast can be enhanced by using enhancement model. Experimental results show that the proposed method not only removes the speckle noises effectively, but also enhances the contrast obviously. This method supplies an effective approach for improving the quality of medical ultrasonic images.
