Research on Improved Algorithm of DR Image Enhancement Based on Gauss-Laplacian Pyramid.
10.3969/j.issn.1671-7104.2019.01.003
- VernacularTitle:基于高斯-拉普拉斯金字塔的DR图像增强改进算法研究
- Author:
Wei ZHU
1
;
Jian LIU
1
;
Mingyue ZHU
2
;
Qin SHAO
1
;
Yu YAN
1
Author Information
1. Affiliated Hospital Nanjing University of TCM(Jiangsu Province Hospital of TCM), Nanjing, 210029.
2. Biomedical Engineering Department, Nanjing Medical University, Nanjing, 210029.
- Publication Type:Journal Article
- Keywords:
Gauss-Laplacian pyramid;
digital radiography;
exponential enhancement;
histogram equalization
- MeSH:
Algorithms;
Humans;
Image Enhancement;
Radiographic Image Enhancement
- From:
Chinese Journal of Medical Instrumentation
2019;43(1):10-13
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:In order to obtain more decision information from Digital Radiography(DR) images, an improved image enhancement algorithm is proposed based on the algorithm of Gauss-Laplacian pyramid.
METHODS:The original algorithm is improved on the basis of the human visual characteristics and better enhancements, the low frequency components of the image is histogram equalized to make the image gray scale more balanced, and the high frequency component is enhanced by a hierarchical exponential enhancement to make the details of the image clearer.
RESULTS:The improved algorithm improves the contrast of DR images in chest, pelvic and spine, and makes the image more layered and obtains good image enhancement effect.
CONCLUSIONS:The results show that the improved algorithm is superior to the traditional algorithm in terms of image enhancement.
