query_data_code_2d_paramsT_query_data_code_2d_paramsQueryDataCode2dParamsQueryDataCode2dParamsquery_data_code_2d_params (Operator)

Name

query_data_code_2d_paramsT_query_data_code_2d_paramsQueryDataCode2dParamsQueryDataCode2dParamsquery_data_code_2d_params — Get for a given 2D data code model the names of the generic parameters or objects that can be used in the other 2D data code operators.

Signature

Description

The operator query_data_code_2d_paramsquery_data_code_2d_paramsQueryDataCode2dParamsQueryDataCode2dParamsquery_data_code_2d_params returns the names of the generic parameters that are supported by the 2D data code operators set_data_code_2d_paramset_data_code_2d_paramSetDataCode2dParamSetDataCode2dParamset_data_code_2d_param, get_data_code_2d_paramget_data_code_2d_paramGetDataCode2dParamGetDataCode2dParamget_data_code_2d_param, find_data_code_2dfind_data_code_2dFindDataCode2dFindDataCode2dfind_data_code_2d, get_data_code_2d_resultsget_data_code_2d_resultsGetDataCode2dResultsGetDataCode2dResultsget_data_code_2d_results, and get_data_code_2d_objectsget_data_code_2d_objectsGetDataCode2dObjectsGetDataCode2dObjectsget_data_code_2d_objects.

For an explanation of the concept of the 2D data code reader see the introduction of chapter Identification / Data Code.

The parameter QueryNameQueryNameQueryNamequeryNamequery_name is used to select the desired parameter group:

'get_model_params'"get_model_params""get_model_params""get_model_params""get_model_params":

get_data_code_2d_paramget_data_code_2d_paramGetDataCode2dParamGetDataCode2dParamget_data_code_2d_param - Parameters for querying the 2D data code model.

'set_model_params'"set_model_params""set_model_params""set_model_params""set_model_params":

set_data_code_2d_paramset_data_code_2d_paramSetDataCode2dParamSetDataCode2dParamset_data_code_2d_param - Parameters for adjusting the 2D data code model.

'find_params'"find_params""find_params""find_params""find_params":

find_data_code_2dfind_data_code_2dFindDataCode2dFindDataCode2dfind_data_code_2d - Parameters used while searching and reading the 2D data code symbols.

'get_result_params'"get_result_params""get_result_params""get_result_params""get_result_params":

get_data_code_2d_resultsget_data_code_2d_resultsGetDataCode2dResultsGetDataCode2dResultsget_data_code_2d_results - Parameters for querying the alphanumerical results of the symbol search.

'get_result_objects'"get_result_objects""get_result_objects""get_result_objects""get_result_objects":

get_data_code_2d_objectsget_data_code_2d_objectsGetDataCode2dObjectsGetDataCode2dObjectsget_data_code_2d_objects - Parameters for accessing the iconic objects of the symbol search.

'trained'"trained""trained""trained""trained":

set_data_code_2d_paramset_data_code_2d_paramSetDataCode2dParamSetDataCode2dParamset_data_code_2d_param - Parameters whose values were determined by training. The next training will not reset these parameters, but extend the parameter space if necessary.

The returned parameter list depends only on the type of the data code and not on the current state of the model or its results.

Execution Information

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

Parameters

Example (HDevelop)

* This example demonstrates how the names of all available model parameters
* can be queried.  This is used to request first the settings of the
* untrained and then the settings of the trained model.

* Create a model for reading Data matrix ECC 200 codes
create_data_code_2d_model ('Data Matrix ECC 200', [], [], DataCodeHandle)
* Query all the names of the generic parameters that can be passed to the
* operator get_data_code_2d_param to request the model
query_data_code_2d_params (DataCodeHandle, 'get_model_params', GenParamName)
* Request the current settings of the (untrained) model
get_data_code_2d_param(DataCodeHandle, GenParamName, ModelParams)

* Read a training image
read_image (Image, 'datacode/ecc200/ecc200_cpu_007')
* train the model with the symbol in the image
find_data_code_2d (Image, SymbolXLDs, DataCodeHandle, 'train', 'all', \
                   ResultHandles, DecodedDataStrings)
* Request the current settings of the (now trained) model
get_data_code_2d_param(DataCodeHandle, GenParamName, TrainedModelParams)
* Create a tuple that demonstrates the changings
ModelAdaption := GenParamName + ':   ' + ModelParams + '  ->  ' + \
                 TrainedModelParams

* Clear the model
clear_data_code_2d_model (DataCodeHandle)

Result

The operator query_data_code_2d_paramsquery_data_code_2d_paramsQueryDataCode2dParamsQueryDataCode2dParamsquery_data_code_2d_params returns the value 2 ( H_MSG_TRUE) if the given parameters are correct. Otherwise, an exception is raised.

Possible Predecessors

create_data_code_2d_modelcreate_data_code_2d_modelCreateDataCode2dModelCreateDataCode2dModelcreate_data_code_2d_model

Possible Successors

get_data_code_2d_paramget_data_code_2d_paramGetDataCode2dParamGetDataCode2dParamget_data_code_2d_param, get_data_code_2d_resultsget_data_code_2d_resultsGetDataCode2dResultsGetDataCode2dResultsget_data_code_2d_results, get_data_code_2d_objectsget_data_code_2d_objectsGetDataCode2dObjectsGetDataCode2dObjectsget_data_code_2d_objects

Module

Data Code