rank_regionrank_regionRankRegionRankRegionrank_region (算子)
名称
rank_regionrank_regionRankRegionRankRegionrank_region — 区域秩算子。
签名
描述
rank_regionrank_regionRankRegionRankRegionRankRegionrank_region calculates the binary rank operator. A filter
mask of size HeightHeightHeightHeightheightheight x WidthWidthWidthWidthwidthwidth) is used. In the
process, for each point in the region the number of points of
RegionRegionRegionRegionregionregion lying within the filter mask are counted. If this
number is greater or equal to NumberNumberNumberNumbernumbernumber, the current point
is added to the output region. If
is chosen, the median operator is obtained.
注意
For HeightHeightHeightHeightheightheight and WidthWidthWidthWidthwidthwidth only odd values > 3 are
valid. If invalid parameters are chosen they are converted
automatically (without raising an exception) to the next larger odd
values.
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）。
- 在元组级别上自动并行化。
参数
RegionRegionRegionRegionregionregion (输入对象) region(-array) → objectHRegionHObjectHRegionHobject
Region(s) to be transformed.
RegionCountRegionCountRegionCountRegionCountregionCountregion_count (输出对象) region(-array) → objectHRegionHObjectHRegionHobject *
Resulting region(s).
WidthWidthWidthWidthwidthwidth (输入控制) extent.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Width of the filter mask.
默认值：
15
建议值：
3, 5, 7, 9, 11, 13, 15, 17, 19, 21
值范围：
3
≤
Width
Width
Width
Width
width
width
≤
511 (lin)
最小增量：
2
建议增量：
2
限制：
Width >= 3 && odd(Width)
HeightHeightHeightHeightheightheight (输入控制) extent.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Height of the filter mask.
默认值：
15
建议值：
3, 5, 7, 9, 11, 13, 15, 17, 19, 21
值范围：
3
≤
Height
Height
Height
Height
height
height
≤
511 (lin)
最小增量：
2
建议增量：
2
限制：
Height >= 3 && odd(Height)
NumberNumberNumberNumbernumbernumber (输入控制) integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Minimum number of points lying within the filter mask.
默认值：
70
建议值：
5, 10, 20, 40, 60, 80, 90, 120, 150, 200
值范围：
1
≤
Number
Number
Number
Number
number
number
≤
1000 (lin)
最小增量：
1
建议增量：
10
限制：
Number > 0
示例（HDevelop）
read_image(Image,'monkey')
mean_image(Image,Mean,5,5)
dyn_threshold(Image,Mean,Points,25,'light')
rank_region(Points,Textur,15,15,30)
gen_circle(Mask,10,10,3)
opening(Textur,Mask,Seg)
示例（C）
read_image(&Image,"monkey");
mean_image(Image,&Mean,5,5);
dyn_threshold(Image,Mean,&Points,25,"light");
rank_region(Points,Textur,15,15,30);
gen_circle(&Mask,10,10,3);
opening(Textur,Mask,&Seg);
示例（HDevelop）
read_image(Image,'monkey')
mean_image(Image,Mean,5,5)
dyn_threshold(Image,Mean,Points,25,'light')
rank_region(Points,Textur,15,15,30)
gen_circle(Mask,10,10,3)
opening(Textur,Mask,Seg)
示例（HDevelop）
read_image(Image,'monkey')
mean_image(Image,Mean,5,5)
dyn_threshold(Image,Mean,Points,25,'light')
rank_region(Points,Textur,15,15,30)
gen_circle(Mask,10,10,3)
opening(Textur,Mask,Seg)
示例（HDevelop）
read_image(Image,'monkey')
mean_image(Image,Mean,5,5)
dyn_threshold(Image,Mean,Points,25,'light')
rank_region(Points,Textur,15,15,30)
gen_circle(Mask,10,10,3)
opening(Textur,Mask,Seg)
复杂度
Let F be the area of the input region. Then the runtime
complexity is O(F * 8).
结果
rank_regionrank_regionRankRegionRankRegionRankRegionrank_region 在所有参数正确时返回 2 ( H_MSG_TRUE )。当输入为空（未指定区域）时则可设置行为通过 set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>) 以及输入区域为空时可设置行为通过 set_system('empty_region_result',<Result>)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)set_system("empty_region_result",<Result>)。如有必要，则抛出异常。
可能的前趋
thresholdthresholdThresholdThresholdThresholdthreshold,
connectionconnectionConnectionConnectionConnectionconnection,
regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowingregiongrowing,
pouringpouringPouringPouringPouringpouring,
class_ndim_normclass_ndim_normClassNdimNormClassNdimNormClassNdimNormclass_ndim_norm
可能的后继
select_shapeselect_shapeSelectShapeSelectShapeSelectShapeselect_shape,
disp_regiondisp_regionDispRegionDispRegionDispRegiondisp_region
替代
closing_rectangle1closing_rectangle1ClosingRectangle1ClosingRectangle1ClosingRectangle1closing_rectangle1,
expand_regionexpand_regionExpandRegionExpandRegionExpandRegionexpand_region
另见
rank_imagerank_imageRankImageRankImageRankImagerank_image,
mean_imagemean_imageMeanImageMeanImageMeanImagemean_image
模块
基础