opening_golayopening_golayOpeningGolayOpeningGolayopening_golay (算子)

名称

opening_golayopening_golayOpeningGolayOpeningGolayopening_golay — 使用 Golay 字母表中的元素打开一个区域。

警告

opening_golayopening_golayOpeningGolayOpeningGolayOpeningGolayopening_golay 已过时，仅出于向后兼容性考虑而保留。

签名

描述

opening_golayopening_golayOpeningGolayOpeningGolayOpeningGolayopening_golay is defined as a Minkowski subtraction followed by a Minkowski addition. First the Minkowski subtraction of the input region (RegionRegionRegionRegionregionregion) with the structuring element from the Golay alphabet defined by GolayElementGolayElementGolayElementGolayElementgolayElementgolay_element and RotationRotationRotationRotationrotationrotation is computed. Then the Minkowski addition of the result and the structuring element rotated by 180 degrees is performed.

The following structuring elements are available:

'l', 'm', 'd', 'c', 'e', 'i', 'f', 'f2', 'h', 'k'.

The rotation number RotationRotationRotationRotationrotationrotation determines which rotation of the element should be used, and whether the foreground (even) or background version (odd) of the selected element should be used. The Golay elements, together with all possible rotations, are described with the operator golay_elementsgolay_elementsGolayElementsGolayElementsGolayElementsgolay_elements。

opening_golayopening_golayOpeningGolayOpeningGolayOpeningGolayopening_golay serves to eliminate regions smaller than the structuring element, and to smooth regions' boundaries.

注意

Not all values of RotationRotationRotationRotationrotationrotation are valid for any Golay element. For some of the values of RotationRotationRotationRotationrotationrotation, the resulting regions are identical to the input regions.

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

复杂度

Let F be the area of an input region. Then the runtime complexity for one region is:

结果

opening_golayopening_golayOpeningGolayOpeningGolayOpeningGolayopening_golay 在所有参数正确时返回 2 ( H_MSG_TRUE )。当输入区域为空或不存在时，其行为可通过以下方式设置：

• 无区域： set_system('no_object_result',<RegionResult>)set_system("no_object_result",<RegionResult>)SetSystem("no_object_result",<RegionResult>)SetSystem("no_object_result",<RegionResult>)SetSystem("no_object_result",<RegionResult>)set_system("no_object_result",<RegionResult>)

• 空区域： set_system('empty_region_result',<RegionResult>)set_system("empty_region_result",<RegionResult>)SetSystem("empty_region_result",<RegionResult>)SetSystem("empty_region_result",<RegionResult>)SetSystem("empty_region_result",<RegionResult>)set_system("empty_region_result",<RegionResult>)

否则，将抛出异常。

可能的前趋

thresholdthresholdThresholdThresholdThresholdthreshold, regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowingregiongrowing, connectionconnectionConnectionConnectionConnectionconnection, union1union1Union1Union1Union1union1, watershedswatershedsWatershedsWatershedsWatershedswatersheds, class_ndim_normclass_ndim_normClassNdimNormClassNdimNormClassNdimNormclass_ndim_norm

可能的后继

reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain, select_shapeselect_shapeSelectShapeSelectShapeSelectShapeselect_shape, area_centerarea_centerAreaCenterAreaCenterAreaCenterarea_center, connectionconnectionConnectionConnectionConnectionconnection

替代

opening_segopening_segOpeningSegOpeningSegOpeningSegopening_seg, openingopeningOpeningOpeningOpeningopening

另见

erosion_golayerosion_golayErosionGolayErosionGolayErosionGolayerosion_golay, dilation_golaydilation_golayDilationGolayDilationGolayDilationGolaydilation_golay, closing_golayclosing_golayClosingGolayClosingGolayClosingGolayclosing_golay, hit_or_miss_golayhit_or_miss_golayHitOrMissGolayHitOrMissGolayHitOrMissGolayhit_or_miss_golay, thinning_golaythinning_golayThinningGolayThinningGolayThinningGolaythinning_golay, thickening_golaythickening_golayThickeningGolayThickeningGolayThickeningGolaythickening_golay, golay_elementsgolay_elementsGolayElementsGolayElementsGolayElementsgolay_elements

模块

基础

---