Image table character identification method

A text recognition and image technology, applied in the field of image recognition, can solve problems such as difficulties in table text segmentation, and achieve the effects of ensuring order and logical accuracy, high recognition efficiency, and simple judgment methods.

Inactive Publication Date: 2016-03-23
成都数联铭品科技有限公司
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Problems solved by technology

The image form text recognition realized by the method of the present invention realizes text recognition on the basis of overcoming the difficulty of form text

Method used

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  • Image table character identification method
  • Image table character identification method
  • Image table character identification method

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Embodiment

[0059] The implementation process of the image form text recognition method of the present invention is specifically described below by giving examples. In this embodiment, the picture to be recognized after the binarization process is as follows image 3 shown, yes Figure 1 As shown in the image to be recognized, the cell contour of the image table is detected by the findcontours function in the openCV image processing tool. The detected cell contour is as follows Figure 4 shown; will Figure 4 Put the cell contour point sets detected in the corresponding class into the corresponding class, and put these contour point set classes into a large class contours; traverse the elements in the contours, and call the minAreaRect function for each element in the contours, Extract the rotated rectangular area and put it into the RotatedRect class; traverse the elements in the RotatedRect class, extract the four-corner vertex coordinates corresponding to the rotated rectangular...

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Abstract

The invention relates to the field of image identification, in particular to an image table character identification method. The image table character identification method comprises the following steps: firstly, detecting cells in an image table to be identified, integrally segmenting information contents in each cell, and segmenting character information in each cell by a projection method; and on the basis of image table character segmentation, inputting character blocks obtained by segmentation into a trained neural network, and automatically identifying character information in the image table by the neural network. The image table character identification method has the advantages of being clear in calculation logics and high in segmentation and identification efficiency, solves the problem of image table identification difficulty which is difficult in overcoming in an image character identification field, and has a huge application field in the fields of image character identification, information mining and information analysis.

Description

technical field [0001] The invention relates to the field of image recognition, in particular to a text recognition method of an image form. Background technique [0002] Image recognition technology is a very important development direction in the field of intelligent recognition technology. The development of image recognition has gone through three stages: character recognition, digital image processing and recognition, and object recognition; The recognition technology of the image is particularly important, because the image text often contains more important available information than the simple image, and the field of application of the image text recognition technology is also very important. Text recognition generally recognizes text, letters, numbers and symbols, and is widely used from printed text recognition to handwritten text recognition. The mathematical essence of image recognition problem belongs to the mapping problem from pattern space to category space....

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V30/412G06V30/414G06V30/40
Inventor 陈炳章何宏靖刘世林吴雨浓
Owner 成都数联铭品科技有限公司
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