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Method for eliminating highlighter marks in digital text image

A text image and highlighter technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as the presence of highlighter marks

Active Publication Date: 2013-12-11
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if you directly use a color scanner or a color camera to take pictures, or use a grayscale image scanner to scan text marked with a color highlighter, the traces of the highlighter will still exist

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The present invention is a method for eliminating the highlight pen mark in a digital text image. The specific steps of eliminating the highlight pen mark in a document with a highlight pen mark are as follows:

[0012] Step 1. Use a color scanner or camera to digitize the document marked with a highlight pen to obtain a digitized color image file;

[0013] Step 2. Open the digitized color image file with Matlab software, you can see the three-dimensional matrix f(i,j,k) of RGB color space, where i is the row of the matrix, j is the column of the matrix, and k is the layer of the matrix. Represents the k-th component of the color, where k=1, 2, 3, respectively stores the color component values ​​of the red R, green G, and blue B bands. For example, f(1, 2, 3) represents the first line of the digital color image The value of the third band (blue component) of the second column of pixels;

[0014] Step 3. For each pixel in the digital color image, select the largest component v...

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PUM

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Abstract

The invention relates to a method for eliminating highlighter marks in a digital text image. The method comprises the steps of carrying out comparative analysis on RGB color model three-primary color constituents of the image of a black-and-white character electronic document and common highlighter marks, selecting a maximum component value of three color component values of a pixel and outputting the maximum component value as the gray value of the pixel, converting a gray text image file with the highlighter marks into a text image file with the highlighter marks eliminated, and finally obtaining a black-and-white text image file with the highlighter marks eliminated. Therefore, the highlighter marks in the document are eliminated fast and effectively.

Description

Technical field [0001] The invention relates to a method for eliminating highlighter pen marks in digital text images. Background technique [0002] When reading paper text, people sometimes use a highlighter to paint part of the text to highlight the content of the text that they think is important for later review or reference. The part of the text painted by the highlighter is important information to the painter, but may not be important to other readers. The highlighted part of the text may affect the normal reading of others, or the painter himself may not want to leave it Read the traces. Therefore, it is sometimes necessary to remove the fluorescent highlight marks left on the text and perform document restoration. [0003] Eliminating the highlighter marks on paper text requires a certain chemical and physical process. It is not easy to achieve this document recovery method that can remove the highlighter marks and leave the text covered or highlighted by the highlighter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/40
Inventor 陈锻生吴扬扬
Owner HUAQIAO UNIVERSITY
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