Method and device for verifying results of optical character recognition
A technology of optical character recognition and recognition results, which is applied in the field of verification of optical character recognition results, can solve the problems of single template, reliability discount, poor adaptability to character changes, etc., and achieve the effect of improving accuracy
Inactive Publication Date: 2019-05-21
NETPOSA TECH
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Problems solved by technology
The simplicity, directness and effectiveness of template matching are obvious, but because the accuracy of character verification is higher than that of simple character recognition, and the general template matching method has poor adaptability to character changes due to too single template, The matching accuracy is low, and its reliability is greatly reduced when doing character verification
[0005] However, the templates used in the character verification process in traditional technologies are relatively simple, and it is difficult to guarantee the use requirements
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0051] In the related art, there is already a method...
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The invention provides a verification method and device for optical character recognition results, and relates to the field of character recognition. This method adopts the method of setting different weights for the reference points on the template map, which obtains the recognition result map and the template map first, wherein the array on the template map has multiple reference points; after that, according to The target reference point and the weight of the target reference point calculate the matching value of the recognition result graph; the target reference point is a reference point corresponding to the position of the figure in the recognition result graph on the template graph; finally, judge Whether the matching value exceeds a preset threshold; if so, it is determined that the recognition result map is a correct result. Since the corresponding weight is set for each reference point, it is no longer just to judge whether the graphics in the recognition result graph appear in the map, but to calculate the matching value of the recognition result graph in a more accurate way, and then according to The matching value is judged, which improves the accuracy of the judgment.
Description
technical field [0001] The invention relates to the field of character recognition, in particular to a verification method and device for optical character recognition results. Background technique [0002] OCR (Optical Character Recognition, Optical Character Recognition) means that an electronic device (such as a scanner or a digital camera) checks characters printed on paper, determines its shape by detecting dark and bright patterns, and then uses character recognition to translate the shape into a computer The process of text; that is, for printed characters, the text in the paper document is converted into a black and white dot matrix image file by optical means, and the text in the image is converted into a text format by recognition software for further processing by word processing software Editing technology. How to debug or use auxiliary information to improve the accuracy of recognition is the most important topic of OCR, and the term ICR (Intelligent Character ...
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IPC IPC(8): G06K9/03G06K9/62
CPCG06V10/993G06F18/22G06F18/217
Inventor 陈家辉李衡峰
Owner NETPOSA TECH