A form arbitrary region character recognition and information input method

A character recognition and arbitrary area technology, applied in the direction of character and pattern recognition, electrical digital data processing, data processing input/output process, etc., can solve the problem of inability to recognize form information, limit the flexibility of form information entry system, and fail to achieve Universal identification and other issues to achieve the effect of flexible functions, good performance, and economical benefits

Pending Publication Date: 2019-06-14
SHANGHAI UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

These methods have several obvious disadvantages. (1) The scanning object needs to be manually aligned, for example: the scanning gun needs to be close to and aligned with the barcode or QR code to be detected; (2) the size of the form designed by each company is different, and the same Different companies may have different form designs for different goods, and the traditional single information scanning and input system cannot achieve universal recognition; (3) The existing scanning system also has certain requirements for the posture of the scanned object, and cannot recognize arbitrary placed form information
The above-mentioned shortcomings greatly limit the flexibility of the existing form information entry system

Method used

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  • A form arbitrary region character recognition and information input method
  • A form arbitrary region character recognition and information input method
  • A form arbitrary region character recognition and information input method

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Experimental program
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Embodiment 1

[0031] The embodiment is a method for quickly positioning and identifying any position information of an information carrier (such as a paper form with a fixed format) placed manually or on a transmission device with different postures, which can realize clear imaging within a certain depth of field Fast identification of information carriers with a set format. For the convenience of description, the information carrier with a fixed format is instantiated as a form in this article.

[0032] The simplified structural diagram of the system implemented in this method is as follows: figure 1 and figure 2 As shown, the difference lies in the difference of the loading platform, figure 1 The loading platform of the scene is a static platform, and the form is placed manually, and the applicable scene is a small indoor or commercial environment; figure 2 The loading platform of the scene is a conveyor belt, and the applicable scene is a large factory environment. The hardware par...

Embodiment approach

[0035] (1) Manually adjust the position of the template form so that it is in the middle of the camera's field of view and ensure that the form is in a horizontal state.

[0036] (2) Click and drag the box with the left mouse button to select the complete form in the template form, that is Figure 5 Rectangular form area Rect 1 , to obtain related parameters: pixel coordinates of point A and point B, center point coordinate Center1.

[0037] (3) Use the above-mentioned method of mouse dragging and frame selection again to select the information area to be identified (region of interest) Rect 2 ,Right now Figure 5 In the shaded part, obtain relevant parameters: pixel coordinates of point C and point D, center point coordinate Center2.

[0038] (4) Through the obtained rectangular area Rect 1 and Rect 2 Feature parameters, calculate the region of interest Rect 2Relative to the form area Rect 1 location relationship. Main idea: Calculate the Rect according to the horizon...

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Abstract

The invention belongs to the field of image detection and recognition, and relates to a form arbitrary region character recognition and information input method. The lens of the image acquisition camera is aligned with the form; the illumination light source illuminates the form; the form is arranged on the transmission belt or the object placing table, and the acquisition camera is connected withthe computer, so that the template form images are acquired, a template characteristic parameter library of the form area in the interest area is constructed offline, the form images are acquired online, the to-be-identified image is screened, the form area extraction and pose standardization are carried out, and the form interest area extraction and character input are carried out. Compared witha traditional information recognition and input method, the method is more flexible in the aspect of functions, more economical in the aspect of benefits and good in performance in practical scene application.

Description

technical field [0001] The invention belongs to the field of image detection and recognition, and mainly relates to a character recognition and information input method in any area in a form. Background technique [0002] Today's world has entered the era of information explosion, and all kinds of information are stored electronically in personal computers or servers. However, if the entry of these electronic information only relies on manual input, it is difficult to meet the requirements for work efficiency. For example: China's logistics industry is developing rapidly nowadays, and hundreds of millions of goods and logistics information need to be entered and updated every day, and most of this information is usually presented in the form of a cargo form, and the information on the cargo form is also complicated. It is obviously not realistic to manually enter key data. Existing traditional information entry systems generally use special scanning equipment to convert th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06F3/023G06F17/24
Inventor 杨傲雷刘佳奇陈灵徐昱琳杨帮华
Owner SHANGHAI UNIV
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