select_objselect_objSelectObjSelectObjselect_obj (Operator)

Name

select_objselect_objSelectObjSelectObjselect_obj — Select objects from an object tuple.

Signature

Description

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 Object.

Execution Information

• Supports objects on compute devices.
• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

Example (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);
}

Complexity

Runtime complexity: O(|ObjectsObjectsObjectsObjectsobjectsobjects|)

Result

select_objselect_objSelectObjSelectObjSelectObjselect_obj returns 2 (H_MSG_TRUE) if all objects are contained in the HALCON database and all parameters are correct. If the input is empty the behavior can be set via 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>). If necessary, an exception is raised.

Possible Predecessors

count_objcount_objCountObjCountObjCountObjcount_obj

Alternatives

copy_objcopy_objCopyObjCopyObjCopyObjcopy_obj

See also

count_objcount_objCountObjCountObjCountObjcount_obj, concat_objconcat_objConcatObjConcatObjConcatObjconcat_obj, obj_to_integerobj_to_integerObjToIntegerObjToIntegerObjToIntegerobj_to_integer

Module

Foundation