Financial document image segmentation and correction method based on mobile terminal

A document image and mobile terminal technology, applied in the field of financial document processing, can solve problems such as poor scanning effect, sensitivity to light interference, and inaccurate scanning of weak edges

Pending Publication Date: 2019-10-15
湖南联信科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] Judging from the test results of the existing software on the market, they generally have some problems, such as sensitivity to light interference, inaccurate scanning of weak edges, and poor scanning effect when the background is complex, so we segmented the financial document image The rapidity and robustness of the correction were studied

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  • Financial document image segmentation and correction method based on mobile terminal
  • Financial document image segmentation and correction method based on mobile terminal
  • Financial document image segmentation and correction method based on mobile terminal

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Embodiment Construction

[0086] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0087] figure 1 It is the process flow of the financial document image segmentation and correction method of the present invention, and the specific implementation process of the present invention is as follows:

[0088] (1) Image preprocessing: Perform median filtering on the original color image, remove noise, and scale the image to a uniform size.

[0089] The median filter operation is to replace the value of the point in the digital image with the median value of each point value in the 3*3 field; the image after the median filter is uniformly scaled to a size of 200*150 by bilinear interpolation.

[0090] (2) Foreground and background segmentation: the part of the document in the image is called the foreground, and the rest is called the background; a Gaussian mixture model is established for the preprocessed image, and then the foregrou...

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Abstract

The invention discloses a financial document image segmentation and correction method based on a mobile terminal. The method comprises the following steps: (1) preprocessing an image; (2) performing foreground and background segmentation on the image; (3) carrying out contour detection on the segmented image; (4) removing redundant contours; (5) carrying out straight line fitting on the document contour to obtain four straight lines, and then solving four intersection points; and (6) correcting the position of the document to obtain a standard rectangle. According to the financial document image segmentation and correction method based on the mobile terminal, the financial document image is accurately segmented under different illumination intensities, and the whole algorithm has the advantages of being simple, high in accuracy, good in robustness and high in positioning speed.

Description

technical field [0001] The invention relates to the technical field of financial document processing, in particular to a mobile terminal-based financial document image segmentation and correction method. Background technique [0002] In recent years, despite the rapid development of electronic payment methods, traditional documents are still one of the most frequently used forms in non-cash transactions. With the continuous introduction of financial innovation, loan business, various collection services and other businesses, the number of documents is also increasing day by day, and banks often need to invest a lot of energy in sorting out, entering, and filing various documents. Manual operations are time-consuming and labor-intensive. The low efficiency cannot meet the increasing needs of financial documents, which seriously restricts the improvement of the bank's office efficiency, and even leads to the decline of the overall competitiveness of the bank. In this case, it...

Claims

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Application Information

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IPC IPC(8): G06T7/12G06T7/194G06T5/00G06T5/20G06T5/30
CPCG06T7/12G06T7/194G06T5/20G06T5/30G06T2207/10024G06T2207/20032G06T2207/30176G06T5/80G06T5/70
Inventor 贺雄张东波朱泽敏汪忠
Owner 湖南联信科技有限公司
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