Multiresolution spline warping for EPI registration | Zendy

Jan Kybic | Zendy; P. Thévenaz | Zendy; Michaël Unser | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

<title>Multiresolution spline warping for EPI registration</title>

Author(s) -

Jan Kybic,

P. Thévenaz,

Michaël Unser

Publication year - 1999

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.366815

Subject(s) - image warping , computer science , artificial intelligence , spline (mechanical) , computer vision , image registration , regularization (linguistics) , multiresolution analysis , wavelet , grid , algorithm , wavelet transform , image (mathematics) , discrete wavelet transform , mathematics , geometry , physics , thermodynamics

Registration of images subject to non-linear warping has numerous practical applications. We present an algorithm based on double multiresolution structure of warp and image spaces. Tuning a so-called scale parameter controls the coarseness of the grid by which the deformation is described and also the amount of implicit regularization. The application of our algorithm deals with undoing unidirectional non-linear geometrical distortion of echo-planar images (EPI)caused by local magnetic field inhomogeneities induced mainly by the subject presence. The unwarping is based on registering the EPI images with corresponding undistorted anatomical MRI images. We present evaluation of our method using a wavelet-based random Sobolev-type deformation generator as well as other experimental examples.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research