read_ocr_class_cnnT_read_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn (算子名称)
名称
read_ocr_class_cnnT_read_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn — Read an CNN-based OCR classifier from a file.
参数签名
def read_ocr_class_cnn(file_name: str) -> HHandle
描述
read_ocr_class_cnnread_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn reads a pretrained OCR classifier based on a
convolutional neural network (CNN).
The CNN-based OCR classifier is read with read_ocr_class_cnnread_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn and
subsequently used for classification with either
do_ocr_single_class_cnndo_ocr_single_class_cnnDoOcrSingleClassCnnDoOcrSingleClassCnnDoOcrSingleClassCnndo_ocr_single_class_cnn, do_ocr_multi_class_cnndo_ocr_multi_class_cnnDoOcrMultiClassCnnDoOcrMultiClassCnnDoOcrMultiClassCnndo_ocr_multi_class_cnn, or
do_ocr_word_cnndo_ocr_word_cnnDoOcrWordCnnDoOcrWordCnnDoOcrWordCnndo_ocr_word_cnn.
HALCON provides a number of pretrained OCR classifiers (see
“Solution Guide I”, chapter 'OCR', section 'Pretrained OCR
Fonts'). These pretrained OCR
classifiers make it possible to read a wide variety of different fonts
without the need to train an OCR classifier. Note that the pretrained OCR
classifiers were trained with symbols that are printed dark on light.
运行信息
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
This operator returns a handle. Note that the state of an instance of this handle type may be changed by specific operators even though the handle is used as an input parameter by those operators.
参数表
FileNameFileNameFileNameFileNamefileNamefile_name (input_control) filename.read → HTuplestrHTupleHtuple (string) (string) (HString) (char*)
File name.
Default:
'Universal_Rej.occ'
"Universal_Rej.occ"
"Universal_Rej.occ"
"Universal_Rej.occ"
"Universal_Rej.occ"
"Universal_Rej.occ"
Suggested values:
'Universal_NoRej.occ'"Universal_NoRej.occ""Universal_NoRej.occ""Universal_NoRej.occ""Universal_NoRej.occ""Universal_NoRej.occ", 'Universal_Rej.occ'"Universal_Rej.occ""Universal_Rej.occ""Universal_Rej.occ""Universal_Rej.occ""Universal_Rej.occ", 'Universal_0-9_NoRej.occ'"Universal_0-9_NoRej.occ""Universal_0-9_NoRej.occ""Universal_0-9_NoRej.occ""Universal_0-9_NoRej.occ""Universal_0-9_NoRej.occ", 'Universal_0-9_Rej.occ'"Universal_0-9_Rej.occ""Universal_0-9_Rej.occ""Universal_0-9_Rej.occ""Universal_0-9_Rej.occ""Universal_0-9_Rej.occ", 'Universal_0-9+_NoRej.occ'"Universal_0-9+_NoRej.occ""Universal_0-9+_NoRej.occ""Universal_0-9+_NoRej.occ""Universal_0-9+_NoRej.occ""Universal_0-9+_NoRej.occ", 'Universal_0-9+_Rej.occ'"Universal_0-9+_Rej.occ""Universal_0-9+_Rej.occ""Universal_0-9+_Rej.occ""Universal_0-9+_Rej.occ""Universal_0-9+_Rej.occ", 'Universal_0-9A-Z_NoRej.occ'"Universal_0-9A-Z_NoRej.occ""Universal_0-9A-Z_NoRej.occ""Universal_0-9A-Z_NoRej.occ""Universal_0-9A-Z_NoRej.occ""Universal_0-9A-Z_NoRej.occ", 'Universal_0-9A-Z_Rej.occ'"Universal_0-9A-Z_Rej.occ""Universal_0-9A-Z_Rej.occ""Universal_0-9A-Z_Rej.occ""Universal_0-9A-Z_Rej.occ""Universal_0-9A-Z_Rej.occ", 'Universal_0-9A-Z+_NoRej.occ'"Universal_0-9A-Z+_NoRej.occ""Universal_0-9A-Z+_NoRej.occ""Universal_0-9A-Z+_NoRej.occ""Universal_0-9A-Z+_NoRej.occ""Universal_0-9A-Z+_NoRej.occ", 'Universal_0-9A-Z+_Rej.occ'"Universal_0-9A-Z+_Rej.occ""Universal_0-9A-Z+_Rej.occ""Universal_0-9A-Z+_Rej.occ""Universal_0-9A-Z+_Rej.occ""Universal_0-9A-Z+_Rej.occ", 'Universal_A-Z+_NoRej.occ'"Universal_A-Z+_NoRej.occ""Universal_A-Z+_NoRej.occ""Universal_A-Z+_NoRej.occ""Universal_A-Z+_NoRej.occ""Universal_A-Z+_NoRej.occ", 'Universal_A-Z+_Rej.occ'"Universal_A-Z+_Rej.occ""Universal_A-Z+_Rej.occ""Universal_A-Z+_Rej.occ""Universal_A-Z+_Rej.occ""Universal_A-Z+_Rej.occ"
File extension:
.occ, .fnt
OCRHandleOCRHandleOCRHandleOCRHandleOCRHandleocrhandle (output_control) ocr_cnn → HOCRCnn, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Handle of the OCR classifier.
结果
If the parameters are valid, the operator read_ocr_class_cnnread_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn
returns the value 2 (
H_MSG_TRUE)
. If necessary, an exception is
raised.
可能的后置算子
do_ocr_single_class_cnndo_ocr_single_class_cnnDoOcrSingleClassCnnDoOcrSingleClassCnnDoOcrSingleClassCnndo_ocr_single_class_cnn,
do_ocr_multi_class_cnndo_ocr_multi_class_cnnDoOcrMultiClassCnnDoOcrMultiClassCnnDoOcrMultiClassCnndo_ocr_multi_class_cnn,
do_ocr_word_cnndo_ocr_word_cnnDoOcrWordCnnDoOcrWordCnnDoOcrWordCnndo_ocr_word_cnn
参考其它
get_params_ocr_class_cnnget_params_ocr_class_cnnGetParamsOcrClassCnnGetParamsOcrClassCnnGetParamsOcrClassCnnget_params_ocr_class_cnn
模块
OCR/OCV