Correction method and device for scanned image

A technology for scanning images and images, applied in the field of image processing, can solve problems such as poor quality of scanned images, and achieve the effects of increasing hardware costs, reducing dependencies, and improving quality

Inactive Publication Date: 2017-05-31
SHENZHEN YIHUA COMP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for correcting scanned images to solve the problem in the prior art that scanning equipment is affected by ambient light and cause poor quality of scanned images

Method used

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  • Correction method and device for scanned image
  • Correction method and device for scanned image
  • Correction method and device for scanned image

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Experimental program
Comparison scheme
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Embodiment 1

[0054] figure 1 It is a flow chart of a method for correcting a scanned image provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where the brightness of a scanned image is corrected by a scanning device to be uneven or unclear. The device can be implemented by means of software and / or hardware, and generally can be integrated into a scanning device.

[0055] The method of Embodiment 1 of the present invention specifically includes:

[0056]S101. Acquire a scanned image to be corrected corresponding to the scanned paper, and a background corrected scanned image corresponding to a background corrected object, wherein the color of the background corrected object matches the paper color of the scanned paper.

[0057] In this embodiment, the scanned image to be corrected corresponding to the scanned paper and the background corrected scanned image corresponding to the background corrected object can be obtained by scanning with a scan...

Embodiment 2

[0062] figure 2 It is a flow chart of a method for correcting a scanned image provided by Embodiment 2 of the present invention. Embodiment 2 of the present invention is optimized on the basis of Embodiment 1, specifically for obtaining the scanned image to be corrected corresponding to the scanned paper, and A background corrected scanned image corresponding to the background corrected object, wherein the color of the background corrected object matches the paper color of the scanned paper for further optimization of the operation, such as figure 2 As shown, the second embodiment of the present invention specifically includes:

[0063] S2011. Select a background correction object according to the paper color of the scanned paper.

[0064] Wherein, the background correction object may be a blank paper with the same paper color as the scanned paper, or may also be a special document scanning table that matches the paper color of the scanned paper.

[0065] S2012. Scan the b...

Embodiment 3

[0075] image 3 It is a flow chart of a scanning image correction method provided by Embodiment 3 of the present invention. Embodiment 3 of the present invention is optimized and improved on the basis of the above-mentioned embodiments. For using the background to correct the scanned image, for the to-be-corrected Scanned images for image correction are further described as image 3 As shown, the method of the third embodiment of the present invention specifically includes:

[0076] S301. Acquire a scanned image to be corrected corresponding to the scanned paper, and a background corrected scanned image corresponding to a background corrected object, wherein the color of the background corrected object matches the paper color of the scanned paper.

[0077] S3021. Obtain a pixel point in the scanned image to be corrected as a currently processed pixel point.

[0078] S3022. Acquire a first RGB pixel value corresponding to the currently processed pixel.

[0079] S3023. Accord...

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Abstract

An embodiment of the invention discloses a correction method and device for a scanned image. The method comprises the steps as follows: acquiring a to-be-corrected scanned image corresponding to scanned paper and a background correction scanned image corresponding to a background correction object, wherein the color of the background correction object is matched with the color of the scanned paper; correcting the to-be-corrected scanned image by using the background correction scanned image. The correction method and device can solve the problem that the scanned image has uneven brightness or has shade due to the fact that target scanning equipment is located in an open environment, the dependence on ambient light during usage of the target scanning equipment is reduced, the correction method and device are applicable to most application scenes of the target scanning equipment, and the quality of the scanned image is effectively improved.

Description

technical field [0001] Embodiments of the present invention relate to image processing technology, and in particular to a method and device for correcting a scanned image. Background technique [0002] High-speed image camera, referred to as high-speed camera, is a paperless office equipment that can scan paper materials or objects at high speed, convert them into a set format file and save it in the computer. Compared with traditional scanners, it has the advantages of fast scanning speed and easy portability. However, high-speed video cameras have an open structure and are greatly affected by ambient light, while external direct light, reflections, and projections are almost uncontrollable in many cases. Ambient light or lighting is projected onto the scanned paper material, causing uneven brightness or even shadows on the paper material, resulting in poor image quality such as shadows and unclearness in the scanned output image. [0003] In the prior art, the processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/40H04N1/409H04N1/60
CPCH04N1/40093H04N1/409H04N1/6008
Inventor 杨雄陈晓轩
Owner SHENZHEN YIHUA COMP
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