select_objSelectObjSelectObjselect_objselect_obj🔗

Short description🔗

select_objSelectObjSelectObjselect_objselect_obj — Select objects from an object tuple.

Signature🔗

select_obj( object Objects, out object ObjectSelected, integer Index )

HObject HObject.SelectObj( int index )

HImage HImage.SelectObj( HTuple index )

HImage HImage.SelectObj( int index )

HRegion HRegion.SelectObj( int index )

HXLD HXLD.SelectObj( HTuple index )

HXLD HXLD.SelectObj( int index )

Description🔗

select_objSelectObj copies the iconic objects with the indices given by Indexindexindex (starting with 1) from the iconic input object tuple Objectsobjectsobjects to the output object ObjectSelectedobjectSelectedobject_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_objCountObj.

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

Execution information🔗

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🔗

Objectsobjectsobjects (input_object) object(-array) → objectHObjectHObjectHObjectHobject

Input objects.

ObjectSelectedobjectSelectedobject_selected (output_object) object(-array) → objectHObjectHObjectHObjectHobject *

Selected objects.

Indexindexindex (input_control) integer(-array) → (integer)HTuple (Hlong)HTuple (int / long)MaybeSequence[int]Htuple (Hlong)

Indices of the objects to be selected.

Default: 11
Suggested values: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 50, 100, 200, 500, 1000, 2000, 5000
Restriction: Index >= 1

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: \(O(|\textrm{Objects}|)\)

Result🔗

select_objSelectObj 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>:). If necessary, an exception is raised.

Combinations with other operators🔗

Combinations

Possible predecessors

count_objCountObj

Alternatives

copy_objCopyObj

Module🔗

Foundation