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Character recognition device and method

A character recognition and character technology, which is applied in the field of discarding technology and optical character recognition device, can solve the problems of cost-consuming, conceivable and difficult to achieve, and achieve the effect of low misreading rate, low labor cost, and rapid discarding method.

Active Publication Date: 2017-04-12
HITACHI INFORMATION & TELECOMM ENG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, regarding the latter manual test adjustment, if the number of indicators increases, it will be a very cost-intensive method, and it is conceivable that it may be difficult to implement

Method used

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  • Character recognition device and method
  • Character recognition device and method

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Experimental program
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Embodiment 1

[0096] An embodiment of a character recognition apparatus having a discarding method will be described with reference to diagrams. The character recognition device of this embodiment is a device for digitizing an input document by detecting and recognizing characters in an input document image and encoding the characters. The input file includes forms, statements, and the like in addition to normal files.

[0097] figure 2 It is a configuration diagram showing an example of the character recognition device of this embodiment.

[0098]The character recognition device 201 of this embodiment, for example, performs seal recognition and bill recognition, and has an input device 202, a display device 203, an image acquisition device 204, a communication device 205, a computing device (CPU) 206, and an external storage device 207. The external storage device 207 includes a read image database 211 and a discarded image database 212 .

[0099] The input device 202 is a keyboard, a ...

Embodiment 2

[0176] figure 2 It is a configuration diagram showing an example of the character recognition device of this embodiment, which is the same as that of the first embodiment. exist Figure 17 The processing flow of the character recognition device of this embodiment is shown in . Document imaging 101, pre-processing 102, layout analysis 103, character string extraction 104, character cutting 105, character recognition 106, recognition result selection 114, retry judgment 115, and post-recognition processing 116. Example 1 is the same. In addition, the character recognition 106 is also the same as that of the first embodiment.

[0177] In this embodiment, the processing flow of each of 1701 to 1706 of the rejection determination unit is different.

[0178] In Embodiment 1, the rejection value calculation processing and the rejection determination processing are arranged in the order of stronger rejection strength. In the case where there is little difference in the calculati...

Embodiment 3

[0183] figure 2 It is a configuration diagram showing an example of the character recognition device of this embodiment, which is the same as that of the first embodiment. exist Figure 18 The processing flow of the character recognition device of this embodiment is shown in . Document imaging 101, pre-processing 102, layout analysis 103, character string extraction 104, character cutting 105, character recognition 106, recognition result selection 114, retry judgment 115, and post-recognition processing 116. Example 1 is the same. In addition, the character recognition 106 is also the same as that of the first embodiment.

[0184] In this embodiment, the processing 1801 to 1804 for discarding determination in the character recognition 1805 is different. In this embodiment, as shown in processes 1801 to 1803 , a plurality of discard values ​​are calculated in parallel, and discard determination processing is performed in process 1804 based on these values.

[0185] First...

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Abstract

Disclosed are a character recognition device, method and program which are capable of suppressing the decrease amplitude of a right-reading rate, meanwhile reducing the efficient discard of an erroneous reading rate, and reducing the required calculation quantity by discard determination. The discard determinations (109, 113) based on various indicators are combined in series under high independence of discard values, and are combined in parallel under low independence of discard values. Discard indicators of high discard rate and low calculation cost are configured in the early treatment. A character recognition unit (106) recognizes characters, cut out by a character cutting portion (105), in images of the character units. Among a plurality of discard value calculations (107,108,110-112), the discard value calculations (107,108) of higher discard capability are first configured. When the discard determination is to discard based on the calculated discard values by the precedent discard value calculations, the subsequent discard value calculations are omitted, and thus whether to discard a recognition result can be determined.

Description

technical field [0001] The present invention relates to a character recognition device and method, and a character recognition program, and more particularly, to an optical character recognition device, method, and character recognition program having a rejection determination method in which a plurality of rejection values ​​are combined. In addition, this embodiment also relates to the technique of discarding especially in the technique of character recognition. Background technique [0002] The technical field relates to optical character recognition (OCR: Optical Character Recognition; Optical Character Recognition) devices. An OCR device reads a paper document with a scanner or the like, recognizes characters and / or symbols in an image, and converts the document into Unicode (Unicode) or the like for digitization. OCR devices are used in general enterprises, self-governing organizations, financial institutions, medical institutions, educational institutions, etc. chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/20G06K9/00
Inventor 三好利升新庄广永崎健堤庸昂
Owner HITACHI INFORMATION & TELECOMM ENG LTD
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