Method for removing background color of illustrated document

A technology that combines pictures and texts and documents. It is applied in the field of image processing technology and machine vision. It can solve problems such as blurring and distortion of picture content, and achieve the effect of removing interference, preserving colors and effects, and facilitating reading.

Active Publication Date: 2014-12-10
SHENZHEN ELOAM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing pictures or videos with rich pictures and texts will perform threshold processing on the overall picture or video frame when performing background color removal processing. However, due to the uncertainty of the content of the picture image area, the content of the picture may be treated as ordinary text or background processing. The content of the original picture is seriously distorted, even blurred

Method used

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  • Method for removing background color of illustrated document
  • Method for removing background color of illustrated document
  • Method for removing background color of illustrated document

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the embodiments and with reference to the accompanying drawings.

[0031] For a method of removing the background color in a document with pictures and texts in this embodiment, please refer to figure 1 , including the following steps:

[0032] A. Obtain a frame of video or a static image;

[0033] refer to figure 1 , for shooting or scanning to obtain a still picture with rich pictures and text.

[0034] B. Define a grayscale image of the same size, and copy a color component of the original image to the grayscale image;

[0035] refer to figure 2 , the data to obtain the static image is I(M,N), and the grayscale image G(M,N) is defined; if I(M,N) is a grayscale image, I(M,N) is directly copied to the same size Grayscale image G(M,N); if I(M,N) is an RGB color image, extract the G component of the I(M,N) image and copy it to G(M,N); figure 2 The middle is the RGB color image, ex...

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Abstract

The invention discloses a method for removing a background color of an illustrated document. The method comprises the steps of A, obtaining a frame of image of a video or a static image, B, defining gray level images of the same size, and copying one color component of an original image to the gray level images, C, calculating the threshold of the gray level images, D, calculating a threshold correction coefficient, E, defining same-size tag spaces corresponding to the gray level images, and marking the tag spaces according to the threshold and the threshold correction coefficient, F, identifying image regions in the gray level images and correcting the tag spaces, and G, performing remaining or blanking processing on the original image in the step A according to the tags of the tag spaces. The method for removing the background color of the illustrated document has the advantage of effectively removing interference background while keeping the image area clear.

Description

technical field [0001] The present invention relates to the field of image processing technology and machine vision, and in particular to a process for processing pictures or videos containing documents (bills, certificates, business cards). Image information, while effectively removing the disturbing background (background color). Background technique [0002] With the rapid development of computer technology and the country's emphasis on energy conservation and environmental protection, paperless has become the trend of social development. Paperless office not only replaces traditional printing and copying, but also conducts various business and transaction processing through video and photo taking. Paperless office inevitably involves the processing of documents. Office workers urgently need a fast, accurate and stable method to retain the required text and picture information in the original picture, retain the original color and effect, and effectively remove the distu...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T11/60
Inventor 耿紫穆
Owner SHENZHEN ELOAM TECH CO LTD
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