select_shape_stdselect_shape_stdSelectShapeStdSelectShapeStdselect_shape_std (算子)

名称

select_shape_stdselect_shape_stdSelectShapeStdSelectShapeStdselect_shape_std — 选择给定形状的区域。

签名

描述

算子 select_shape_stdselect_shape_stdSelectShapeStdSelectShapeStdSelectShapeStdselect_shape_std compares the shape of the given regions with default shapes. If the region has a similar shape it is adopted into the output. Possible values for ShapeShapeShapeShapeshapeshape are:

'max_area'

The largest region is selected.

'rectangle1'

The surrounding rectangle parallel to the coordinate axes is determined via the operator smallest_rectangle1smallest_rectangle1SmallestRectangle1SmallestRectangle1SmallestRectangle1smallest_rectangle1。If the area difference in percent is larger than PercentPercentPercentPercentpercentpercent the region is adopted.

'rectangle2'

The smallest surrounding rectangle with any orientation is determined via the operator smallest_rectangle2smallest_rectangle2SmallestRectangle2SmallestRectangle2SmallestRectangle2smallest_rectangle2。If the area difference in percent is larger than PercentPercentPercentPercentpercentpercent the region is adopted. Note that as a more robust alternative the operator select_shapeselect_shapeSelectShapeSelectShapeSelectShapeselect_shape with FeatureFeatureFeatureFeaturefeaturefeature set to 'rectangularity'"rectangularity""rectangularity""rectangularity""rectangularity""rectangularity" can be used instead.

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

可能的前趋

thresholdthresholdThresholdThresholdThresholdthreshold, regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowingregiongrowing, connectionconnectionConnectionConnectionConnectionconnection, smallest_rectangle1smallest_rectangle1SmallestRectangle1SmallestRectangle1SmallestRectangle1smallest_rectangle1, smallest_rectangle2smallest_rectangle2SmallestRectangle2SmallestRectangle2SmallestRectangle2smallest_rectangle2

替代

intersectionintersectionIntersectionIntersectionIntersectionintersection, complementcomplementComplementComplementComplementcomplement, area_centerarea_centerAreaCenterAreaCenterAreaCenterarea_center, select_shapeselect_shapeSelectShapeSelectShapeSelectShapeselect_shape

另见

smallest_rectangle1smallest_rectangle1SmallestRectangle1SmallestRectangle1SmallestRectangle1smallest_rectangle1, smallest_rectangle2smallest_rectangle2SmallestRectangle2SmallestRectangle2SmallestRectangle2smallest_rectangle2, rectangularityrectangularityRectangularityRectangularityRectangularityrectangularity

模块

基础