select_objselect_objSelectObjSelectObjselect_obj (算子)

名称

select_objselect_objSelectObjSelectObjselect_obj — 从对象元组中选择对象。

签名

select_obj(Objects : ObjectSelected : Index : )

描述

select_objselect_objSelectObjSelectObjSelectObjselect_obj copies the iconic objects with the indices given by IndexIndexIndexIndexindexindex (starting with 1) from the iconic input object tuple ObjectsObjectsObjectsObjectsobjectsobjects to the output object ObjectSelectedObjectSelectedObjectSelectedObjectSelectedobjectSelectedobject_selected. No new storage is allocated for the regions and images. Instead, new objects containing references to the existing objects are created. The number of objects in an object tuple can be queried with the operator count_objcount_objCountObjCountObjCountObjcount_obj。

For a short description of the iconic objects that are available in HALCON see the introduction of chapter 对象。

执行信息

支持计算设备上的对象。
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

ObjectsObjectsObjectsObjectsobjectsobjects (输入对象) object(-array) → object

Input objects.

ObjectSelectedObjectSelectedObjectSelectedObjectSelectedobjectSelectedobject_selected (输出对象) object(-array) → object

Selected objects.

IndexIndexIndexIndexindexindex (输入控制) integer(-array) → (integer)

Indices of the objects to be selected.

默认值： 1

建议值： 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 50, 100, 200, 500, 1000, 2000, 5000

限制： Index >= 1

示例（C）

/* Access to all Regions */

count_obj(Regions,&Num);
for (i=1; i<=Num; i++)
{
  select_obj(Regions,&Single,i);
  T_get_region_polygon(Single,5.0,&Row,&Column);
  T_disp_polygon(WindowHandleTuple,Row,Column);
  destroy_tuple(Row);
  destroy_tuple(Column);
}

复杂度

Runtime complexity: O(|ObjectsObjectsObjectsObjectsobjectsobjects|)

结果

select_objselect_objSelectObjSelectObjSelectObjselect_obj 算子返回 2 ( H_MSG_TRUE ) 表示所有对象均存在于 HALCON 数据库中且所有参数均正确。如果输入为空则可设置行为通过 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>)。如有必要，则抛出异常。

可能的前趋

count_objcount_objCountObjCountObjCountObjcount_obj

替代

copy_objcopy_objCopyObjCopyObjCopyObjcopy_obj

另见

count_objcount_objCountObjCountObjCountObjcount_obj, concat_objconcat_objConcatObjConcatObjConcatObjconcat_obj, obj_to_integerobj_to_integerObjToIntegerObjToIntegerObjToIntegerobj_to_integer

模块

基础

算子