smooth_contours_xldsmooth_contours_xldSmoothContoursXldSmoothContoursXldsmooth_contours_xld (算子)
名称
smooth_contours_xldsmooth_contours_xldSmoothContoursXldSmoothContoursXldsmooth_contours_xld — 平滑 XLD 轮廓。
签名
描述
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.
执行信息
- 多线程类型：可重入（与非独占算子并行运行）。
- 多线程作用域：全局（可从任何线程调用）。
- 未采用并行化处理。
参数
ContoursContoursContoursContourscontourscontours (输入对象) xld_cont-array → objectHXLDContHObjectHXLDContHobject
Contour to be smoothed.
SmoothedContoursSmoothedContoursSmoothedContoursSmoothedContourssmoothedContourssmoothed_contours (输出对象) xld_cont-array → objectHXLDContHObjectHXLDContHobject *
Smoothed contour.
NumRegrPointsNumRegrPointsNumRegrPointsNumRegrPointsnumRegrPointsnum_regr_points (输入控制) integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Number of points used to calculate the regression
line.
默认值：
5
建议值：
3, 5, 7, 9
限制：
NumRegrPoints >= 3 && odd(NumRegrPoints)
可能的前趋
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
可能的后继
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
另见
get_contour_xldget_contour_xldGetContourXldGetContourXldGetContourXldget_contour_xld
模块
基础