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A Method for Eliminating Highlighter Marks in Digital Text Images

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

Active Publication Date: 2018-05-25
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 kind of method for eliminating highlighter mark in digital text image, and the concrete steps of eliminating highlighter mark in document with highlighter mark are as follows:

[0012] Step 1. Digitize the document marked with a highlighter with a color scanner or camera to obtain a digitized color image file;

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

[0014] Step 3, for each pixel in the digitized color image, select the maximum component value in the t...

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Abstract

The present invention is a method for eliminating highlighter marks in digital text images. By comparing and analyzing the image of black and white text electronic documents and the three primary color components of the RGB color model of commonly used highlighter mark handwriting, the largest component among the three color component values ​​​​of pixels is selected. The value is output as the grayscale value of the pixel, and the grayscale text image file marked by the highlighter is converted into a text image file that removes the fluorescent mark, and a black and white text image file that removes the fluorescent note is obtained, thereby quickly and effectively eliminating the grayscale text image file in the document Highlighter markers.

Description

technical field [0001] The present invention relates to a method for removing highlighter marks in digital text images. Background technique [0002] When people read paper texts, they sometimes paint part of the text with a highlighter to highlight the content of the text that they think is important, so that they can be reviewed or consulted later. Part of the text painted by the highlighter is important information to the painter, but it 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 keep it Read traces. Therefore, it is sometimes necessary to remove the fluorescent highlight marks left on the text for document restoration. [0003] Removing highlighter marks on paper text requires a certain chemical and physical process. To achieve both removal of highlighter marks and leaving text covered or highlighted by highlighter marks, this document recovery method is not eas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/90
Inventor 陈锻生吴扬扬
Owner HUAQIAO UNIVERSITY
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