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Business license information extraction method based on morphological gradient multi-scale fusion

A multi-scale fusion technology based on morphology, applied in the field of image processing, can solve the problems of image processing information extraction method accuracy, hardware cost and calculation cost, etc., to achieve good zoom effect, eliminate isolated points, and smooth filtering performance Effect

Active Publication Date: 2019-07-02
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, and propose a business license information extraction method based on morphological gradient multi-scale fusion, which solves the accuracy, hardware cost, and calculation cost of the existing image processing information extraction method Incompatible technical issues

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  • Business license information extraction method based on morphological gradient multi-scale fusion
  • Business license information extraction method based on morphological gradient multi-scale fusion
  • Business license information extraction method based on morphological gradient multi-scale fusion

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Embodiment Construction

[0055] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0056] Such as figure 1 As shown, in one embodiment of the present invention, a business license information extraction method based on multi-scale fusion of morphological gradients includes the following steps:

[0057] S1. In order to take into account the scaling effect and the consumption of hardware resources, use the bilinear interpolation scaling method to perform multi-scale transformation scaling on the original im...

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Abstract

The invention discloses a business license information extraction method based on morphological gradient multi-scale fusion. The business license information extraction method comprises the followingsteps: sequentially carrying out scaling processing of multi-scale transformation, denoising of a bilateral filtering algorithm and graying processing on a business license original image to obtain agrayscale image; performing black cap operation on the gray-scale image and negation according to pixels to obtain a black cap image; subtracting the gray-scale image from the black-cap image according to pixels to obtain an edge enhancement image; performing open operation on the edge enhancement graph to obtain an open operation graph; detecting the open operation diagram by using a maximum extreme value stabilization algorithm to obtain a candidate region diagram; detecting and de-duplicating the candidate area map to obtain text area maps with different scales; and comparing the text areagraphs under different scales, and keeping the text area detected under each scale, thereby extracting the image text information. The method solves the technical problem that the accuracy, the hardware cost and the calculation cost of the existing image processing information in the aspect of extracting the business license information cannot be considered at the same time, and greatly improves the administrative efficiency.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for extracting business license information based on multi-scale fusion of morphological gradients. Background technique [0002] As the visual basis of human perception of the world, images are an important means for human beings to obtain information, express information and transmit information. Image processing technology is a technology that uses mathematical algorithms to analyze and process images to achieve the desired results. It generally includes image compression, enhancement, restoration, description and recognition. Among them, image recognition technology is an important scientific research field. Its development will greatly save labor costs. Can improve administrative efficiency. [0003] Existing text detection technologies are mainly divided into two categories, one is traditional text inspection technology based on sliding windows or connec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/30G06T7/11G06T7/62
CPCG06T5/30G06T7/62G06T7/11G06T2207/20028G06T2207/20192G06T2207/30176G06T5/70
Inventor 黄进林家杰王登宇朱明仓李剑波王敏刘怡
Owner SOUTHWEST JIAOTONG UNIV
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