Robust parametrization of brain surface meshes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 18226945.
- Also identified by DOI 10.1016/j.media.2007.11.001.
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Abstract
Complex shapes - such as the surface of the human brain - may be represented and analyzed in frequency space by means of a spherical harmonics transformation. A key step of the processing chain is introducing a suitable parametrization of the triangular mesh representing the brain surface. This problem corresponds to mapping a surface of topological genus zero on a unit sphere. An algorithm is described that produces an optimal combination of an area- and angle-preserving mapping. A multi-resolution scheme provides the robustness required to map the highly detailed and convoluted brain surface. More than 1000 datasets were successfully processed by this mature and robust approach.
Medical subject headings
- Brain