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22:31 Jul 19, 2001
English to Portuguese translations [PRO] Tech/Engineering
English term or phrase:chamfer matching
For the functional PET data, the external edge contours (scalp) are directly derived (outside of this module) from either the transverse transmission (if available) or emission data by means of thresholding and filtering.
For best results, the transmission data is preferred when available.
The actual matching process utilizes a rigid 3D surface-matching algorithm (Chamfer matching).