A Robust Gradient-Based Algorithm to Correct Bias Fields of Brain MR Images
文献类型：期刊论文
| 作者 | Ling, Qiang1; Li, Zhaohui1; Huang, Qinghua2; Liu, Xuelong3 |
| 刊名 | ieee transactions on autonomous mental development
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 7期号:3页码:256-264 |
| 关键词 | Bias field correction gradient magnetic resonance (MR) imaging polynomial fitting |
| 英文摘要 | we developed a novel algorithm to estimate bias fields from brain magnetic resonance (mr) images using a gradient-based method. the bias field is modeled as a multiplicative and slowly varying surface. we fit the bias field by a low-order polynomial. the polynomial's parameters are directly obtained by minimizing the sum of square errors between the gradients of mr images (both in the x-direction and y-direction) and the partial derivatives of the desired polynomial in the log domain. compared to the existing retrospective algorithms, our algorithm combines the estimation of the gradient of the bias field and the reintegration of the obtained gradient polynomial together so that it is more robust against noise and can achieve better performance, which are demonstrated through experiments with both real and simulated brain mr images. |
| WOS标题词 | science & technology ; technology ; life sciences & biomedicine |
| 类目[WOS] | computer science, artificial intelligence ; robotics ; neurosciences |
| 研究领域[WOS] | computer science ; robotics ; neurosciences & neurology |
| 关键词[WOS] | intensity nonuniformity ; automatic correction ; segmentation ; inhomogeneity ; model |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000364875000011 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/27550]  |
| 专题 | 西安光学精密机械研究所_光学影像学习与分析中心 |
| 作者单位 | 1.Univ Sci & Technol China, Dept Automat, Hefei 230027, Anhui, Peoples R China 2.S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Ctr OPT IMagery Anal & Learning OPTIMAL, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ling, Qiang,Li, Zhaohui,Huang, Qinghua,et al. A Robust Gradient-Based Algorithm to Correct Bias Fields of Brain MR Images[J]. ieee transactions on autonomous mental development,2015,7(3):256-264. |
| APA | Ling, Qiang,Li, Zhaohui,Huang, Qinghua,&Liu, Xuelong.(2015).A Robust Gradient-Based Algorithm to Correct Bias Fields of Brain MR Images.ieee transactions on autonomous mental development,7(3),256-264. |
| MLA | Ling, Qiang,et al."A Robust Gradient-Based Algorithm to Correct Bias Fields of Brain MR Images".ieee transactions on autonomous mental development 7.3(2015):256-264. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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