Text line area positioning method, layout analysis method and character recognition method
A positioning method and line area technology, applied in the field of optical character recognition, can solve the problems of low recognition efficiency and long recognition time, and achieve the effect of improving efficiency and shortening the use time of recognition
Pending Publication Date: 2020-10-23
北京中安未来科技有限公司
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[0004] When the existing OCR technology performs character recognition on an image to be recognized with a complex layout, two recognitions are required to obtain all the character information of the image to be recognized with a complex layout, which has the problems of long recognition time and low recognition efficiency
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention. Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention. It should be emphasized that the term "comprising / comprising" when used herein refers to the presence of a feature, element, step or component, but does not exclude the presence or addition of at least one other feature, element, step or component. Here, it should also be noted that, ...
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The invention belongs to the technical field of optical character recognition in digital image recognition, and particularly relates to a text line area positioning method, a layout analysis method based on text line area positioning, a character recognition method and device based on layout analysis and a storage medium. The text line area positioning method comprises the following steps: acquiring a gray level image of a to-be-identified image; obtaining a positioning image according to the grayscale image; and identifying a normal-color text line area and / or an inverse-color text line areain the positioning image. The layout analysis method based on text line area positioning and the character recognition method based on layout analysis both comprise the step that a text line area positioning method is applied to obtain a normal-color text line area and / or an inverse-color text line area. According to the invention, the result image only provided with the normal-color text line area or the inverse-color text line area is obtained through splicing of the text line areas, so that all character information is obtained through one-time recognition, and the character recognition efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of optical character recognition in digital image recognition, and in particular relates to a text line area positioning method, a layout analysis method based on text line area positioning, and a character recognition method, device and storage medium based on layout analysis. Background technique [0002] OCR (Optical Character Recognition, Optical Character Recognition) means that electronic equipment (such as a scanner or digital camera) checks the characters printed on the paper, determines its shape by detecting dark and bright patterns, and then uses the character recognition method, after a large number of calculations processing, the process of translating shapes into computer text; that is, for printed characters, the text in the paper document is converted optically into a black and white dot matrix image file, and the text in the image is converted into text by recognition software Format, techno...
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IPC IPC(8): G06K9/20G06K9/46G06T3/40
CPCG06T3/4038G06V10/22G06V10/56G06V30/10
Inventor 张岩刘丽辉
Owner 北京中安未来科技有限公司