alexa Abstract | Deformable registration of 4D-CT lung image using landmark tracking.

Biomedical Research
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)


Landmark based image registration algorithms have been applied to medical image analysis widely. While estimation of the correspondence between landmarks among images are the most important and difficult problem. In this paper, novel landmarks based image registration method combining local tracking and global adjustment of landmarks in 4D-CT lung images is proposed. In order to accurately establish the corresponding landmarks in images at different phases of 4D-CT, we introduce spatial information to structure tensor and use structure tensor to track landmarks in images at different phases. The prior knowledge of respiratory motion is utilized to limit the search area of corresponding landmarks. Further, a cost function measuring similarity of images, bending energy of transformations and spatio-temporal smoothness of trajectories of landmarks along respiratory phases is given. We update the tracked results of landmarks by minimizing a cost function. After the optimization, the correspondence between landmarks is improved and the trajectories of landmarks are enforced to be more smooth, thus, more accurate registration results can be achieved. Experimental results of public lung dataset demonstrate the effectiveness of the proposed method.

To read the full article Peer-reviewed Article PDF image | Peer-reviewed Full Article image

Author(s): JunhaWu Bingfeng Hu Xuan Yang


Image registration, Structure tensor, Object tracking, Landmark correspondence, #

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version