Halcon二维码识别

Stack Code: PDF417

Matrix Code: Data Matrix ECC200,QR Code,Micro QR Code,Aztec Code

3种识别模式：standard mode,enhanced mode,maximum recognition mode

create_data_code_2d_model (SymbolType[Index], 'default_parameters', 'standard_recognition', DataCodeHandleStandard)
create_data_code_2d_model (SymbolType[Index], 'default_parameters', 'enhanced_recognition', DataCodeHandleEnhanced)
create_data_code_2d_model (SymbolType[Index], 'default_parameters', 'maximum_recognition', DataCodeHandleMaximum)

　　It is strongly recommended to use the standard mode and additionally adjust the parameters either by applying an automatic training (see next section) or by setting specific parameters manually. But note that if your symbols cannot be decoded in enhanced or maximum mode, apart from a few exceptions, a further adaptation of the model will not work either. In such a case, you should enhance the quality of your images. This can be done either during the image acquisition (pay attention,e.g., to the lighting conditions), which is recommended, or by a preprocessing.

query_data_code_2d_params (DataCodeHandle, 'get_model_params', GenParamName) //获取模型参数
get_data_code_2d_param (DataCodeHandle, GenParamName, ModelBeforeTraining) //获取参数值