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Automatic correction method for tilted image

An automatic correction and image technology, applied to instruments, character and pattern recognition, computer components, etc., can solve the problems of not taking into account the useful information of the image, the effect is poor, and the processing method depends on the text area, etc. The effect of strong stickiness and high accuracy

Inactive Publication Date: 2006-04-05
PRIMAX ELECTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for charts, and digital images with less text area, the effect is relatively poor
Therefore, most of the processing methods rely on the text area, without taking into account the useful information of the image

Method used

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  • Automatic correction method for tilted image
  • Automatic correction method for tilted image
  • Automatic correction method for tilted image

Examples

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Embodiment Construction

[0052] In many cases, the original images we obtain are complex images, which may not only contain plain text, but may also include various diagrams and tables, and the content in the text may be vertical or horizontal. At the same time, fonts may also vary. Various noises are unavoidable during the scanning process. The ideal target output of the present invention is an image without any skew.

[0053] The present invention is a kind of tilted image automatic correction method, at first by figure 1 Illustrate the system of the present invention, this figure is the overall flow chart of the method for automatically correcting tilted images proposed by the present invention, described as follows:

[0054] Step 110, first scan the original image to obtain the pixel values ​​of the original image, step 120, then binarize the original image, step 130, fit a reference line in the original image, step 140, according to the reference line Determine the inclination angle of the ima...

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Abstract

The invention relates to a declination image automatic adjusting method which can automatically catch the declination angle of the original image and adjust it. The method comprises the following steps: scanning the original image, acquiring the pixel value of the original image, doing binary to the original image, impacting a baseline in the original image, confirming an angle of the declination according to the baseline, adjusting the image according to the angle of the declination.

Description

technical field [0001] The invention relates to a digital image processing method, in particular to a method for automatically correcting oblique images. Background technique [0002] During the document scanning process, the scanned document often appears tilted, which will bring great inconvenience to the review and processing of the document. Therefore, it is essential to detect and correct the tilt angle of the input image. The tilt correction of the image needs to first detect the tilt angle of the image, and then adjust according to the detected tilt angle to adjust the image to a neat position. [0003] The so-called tilt correction technology refers to automatic correction by detecting the tilt angle of the text, image, etc. input by the scanner. The correct angle of the document image is estimated from the grid lines and the arrangement direction of the text in the document. This technology can be used alone or as a preprocessing for OCR (Optical Character Recogn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/54
Inventor 宋光波
Owner PRIMAX ELECTRONICS LTD
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