Research Article
Nonrigid Registration of Lung CT Images Based on Tissue Features
Algorithm 1
Structural invariance removing method.
| Require: Suppose , are preselected point set. Every point in has a | | corresponding matched point in . The number of , is . | | Ensure: Final set of matched feature pairs. | | (1) Let Q be a set of point pairs; , be sets of points. | | (2) ; | | (3) for to | | (4) do number of points in which have nearest distance to Point | | (5) number of points in which have nearest distance to the point | | which corresponding to Point | | (6) the number of matched pairs between and | | (7) if then | | (8) Point and its corresponding point | | (9) end if | | (10) end for | | (11) Return |
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