|Title||Diffeomorphic Sulcal Shape Analysis for Cortical Surface Registration.|
|Publication Type||Journal Article|
|Year of Publication||2010|
|Authors||Joshi, SH , Cabeen RP , Joshi AA , Woods RP , Narr KL , Toga AW |
|Journal||Proceedings / CVPR, IEEE Computer Society Conference on Computer Vision and Pattern Recognition. IEEE Computer Society Conference on Computer Vision and Pattern Recognition|
|Date Published||2010 Jun 1|
We present an intrinsic framework for constructing sulcal shape atlases on the human cortex. We propose the analysis of sulcal and gyral patterns by representing them by continuous open curves in ℝ(3). The space of such curves, also termed as the shape manifold is equipped with a Riemannian L(2) metric on the tangent space, and shows desirable properties while matching shapes of sulci. On account of the spherical nature of the shape space, geodesics between shapes can be computed analytically. Additionally, we also present an optimization approach that computes geodesics in the quotient space of shapes modulo rigid rotations and reparameterizations. We also integrate the elastic shape model into a surface registration framework for a population of 176 subjects, and show a considerable improvement in the constructed surface atlases.
|Alternate Journal||Proc IEEE Comput Soc Conf Comput Vis Pattern Recognit|