smooth_contours_xldsmooth_contours_xldSmoothContoursXldSmoothContoursXldsmooth_contours_xld (Operator)
Name
smooth_contours_xldsmooth_contours_xldSmoothContoursXldSmoothContoursXldsmooth_contours_xld — Smooth an XLD contour.
Signature
Description
smooth_contours_xldsmooth_contours_xldSmoothContoursXldSmoothContoursXldSmoothContoursXldsmooth_contours_xld smooths the input XLD contours
ContoursContoursContoursContourscontourscontours and returns the smoothed contours in
SmoothedContoursSmoothedContoursSmoothedContoursSmoothedContourssmoothedContourssmoothed_contours. The smoothing is done by projecting
the contours' points onto a local regression line (i.e., a
least-squares approximating line), which is computed from
NumRegrPointsNumRegrPointsNumRegrPointsNumRegrPointsnumRegrPointsnum_regr_points on each side of the current contour point.
This operator should be called, for example, before contours are
scaled.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Parameters
ContoursContoursContoursContourscontourscontours (input_object) xld_cont-array → objectHXLDContHObjectHXLDContHobject
Contour to be smoothed.
SmoothedContoursSmoothedContoursSmoothedContoursSmoothedContourssmoothedContourssmoothed_contours (output_object) xld_cont-array → objectHXLDContHObjectHXLDContHobject *
Smoothed contour.
NumRegrPointsNumRegrPointsNumRegrPointsNumRegrPointsnumRegrPointsnum_regr_points (input_control) integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Number of points used to calculate the regression
line.
Default:
5
Suggested values:
3, 5, 7, 9
Restriction:
NumRegrPoints >= 3 && odd(NumRegrPoints)
Possible Predecessors
gen_contours_skeleton_xldgen_contours_skeleton_xldGenContoursSkeletonXldGenContoursSkeletonXldGenContoursSkeletonXldgen_contours_skeleton_xld,
lines_gausslines_gaussLinesGaussLinesGaussLinesGausslines_gauss,
lines_facetlines_facetLinesFacetLinesFacetLinesFacetlines_facet,
edges_sub_pixedges_sub_pixEdgesSubPixEdgesSubPixEdgesSubPixedges_sub_pix
Possible Successors
affine_trans_contour_xldaffine_trans_contour_xldAffineTransContourXldAffineTransContourXldAffineTransContourXldaffine_trans_contour_xld,
gen_polygons_xldgen_polygons_xldGenPolygonsXldGenPolygonsXldGenPolygonsXldgen_polygons_xld,
local_max_contours_xldlocal_max_contours_xldLocalMaxContoursXldLocalMaxContoursXldLocalMaxContoursXldlocal_max_contours_xld
See also
get_contour_xldget_contour_xldGetContourXldGetContourXldGetContourXldget_contour_xld
Module
Foundation