read_ocr_class_cnnT_read_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn (算子)

名称

read_ocr_class_cnnT_read_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn — 从文件中读取基于 CNN 的 OCR 分类器。

签名

read_ocr_class_cnn( : : FileName : OCRHandle)

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.

执行信息

多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
未采用并行化处理。

此算子返回一个句柄。请注意，即使该句柄被用作特定算子的输入参数，这些算子仍可能改变此句柄类型的实例状态。

参数

FileNameFileNameFileNameFileNamefileNamefile_name (输入控制) filename.read → (string)

File name.

默认值： 'Universal_Rej.occ' "Universal_Rej.occ" "Universal_Rej.occ" "Universal_Rej.occ" "Universal_Rej.occ" "Universal_Rej.occ"

建议值： '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 (输出控制) ocr_cnn → (handle)

Handle of the OCR classifier.

结果

如果参数有效，算子 read_ocr_class_cnnread_ocr_class_cnnReadOcrClassCnnReadOcrClassCnnReadOcrClassCnnread_ocr_class_cnn 返回值 2 ( H_MSG_TRUE )。如有必要，则抛出异常。

可能的后继

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

另见

get_params_ocr_class_cnnget_params_ocr_class_cnnGetParamsOcrClassCnnGetParamsOcrClassCnnGetParamsOcrClassCnnget_params_ocr_class_cnn

模块

光学字符识别/光学字符验证

算子