| 基于加权直方图的数字减影图像矫正算法 |
| |
| 引用本文： | 储颖,糜华,纪震. 基于加权直方图的数字减影图像矫正算法[J]. 电子学报, 2008, 36(7): 1344-1348 |
| |
| 作者姓名： | 储颖 糜华 纪震 |
| |
| 作者单位： | 深圳大学德州仪器DSPs实验室,广东深圳,518060 |
| |
| 基金项目： | 国家自然科学基金，国家自然科学基金委员会与英国皇家学会合作项目，深圳市重点实验室产研项目，深圳大学校科研和教改项目 |
| |
| 摘 要： | 数字减影图像矫正是DSA血管三维重建的重要预处理过程.运用分阶段矫正思想,本文首次提出基于加权直方图的数字减影图像矫正算法,对传统运动矫正和灰度矫正算法均进行有效改进.改进措施包括根据减影图像边缘信息选取控制点、构造基于减影加权直方图能量的相似性测度、生成血管排除模板和利用减影加权直方图寻找灰度偏移量.实验结果表明,改进算法能改善减影图像质量,增强血管辨识度,更有效消除运动噪声和灰度噪声,矫正效果明显.
|
| 关 键 词： | 加权直方图 数字减影血管造影术 图像矫正 运动矫正 灰度矫正 |
| 收稿时间： | 2007-09-10 |
Image Registration Based on Weighted Histogram for Digital Subtraction Angiography |
| |
| CHU Ying,MI Hua,JI Zhen. Image Registration Based on Weighted Histogram for Digital Subtraction Angiography[J]. Acta Electronica Sinica, 2008, 36(7): 1344-1348 |
| |
| Authors: | CHU Ying MI Hua JI Zhen |
| |
| Affiliation: | CHU Ying,MI Hua,JI Zhen(Texas Instruments DSPs Lab,Shenzhen University,Shenzhen,Guangdong 518060,China) |
| |
| Abstract: | Image registration for digital subtraction angiography(DSA) is an important preprocess for 3D reconstruction of blood vessels based on DSA image sequence.A new image registration algorithm based on weighted histogram for DSA image is firstly proposed in this paper.The registration method is divided into two phases,i.e.motion correction and gray-level registration,according to the two different types of noise.A series of methods are introduced to improve the performances of traditional DSA registration algor... |
| |
| Keywords: | weighted histogram digital subtraction angiography image registration motion correction gray-level registration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子学报》浏览原始摘要信息 |
|
点击此处可从《电子学报》下载免费的PDF全文 |
|
