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Method and device for detecting blank pages and blurred pages of electronic files

A detection method and blur detection technology are applied in the detection field of blank pages and blurred pages, which can solve the problems that blank areas are easily regarded as blurred images, and the false detection rate of image content distribution is high.

Active Publication Date: 2021-07-06
BEIJING THUNISOFT INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, in order to solve the problem of high false detection rate caused by uneven distribution of image content in the prior art, and the problem that blank areas in blur detection are easily regarded as blurred images, the present invention provides a blank page and blurred image of an electronic file. Page detection method and device

Method used

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  • Method and device for detecting blank pages and blurred pages of electronic files
  • Method and device for detecting blank pages and blurred pages of electronic files
  • Method and device for detecting blank pages and blurred pages of electronic files

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Embodiment 1

[0057]The invention uses the sliding window as the cornerstone of the method to solve the problem of non-concentrated distribution of image information. By detecting the edge of the image, the edge features of the image are extracted as the conditions for judging whether it is a blank page or a blurred page. Edge detection is a basic tool in image processing, computer vision, and machine vision. It is usually used for feature extraction and feature detection. It aims to detect edges or discontinuous areas with obvious changes in a digital image.

[0058] A method for detecting blank pages and blurred pages of an electronic file of the present invention includes a training step and a detection step before detection.

[0059] image 3 It is a schematic diagram of blank pages and normal pages of the present invention, the first three are blank pages, and the last two pages are normal pages. The blank pages do not contain useful information, and the third page is because the pap...

Embodiment 2

[0089] The present invention also provides a detection device for blank pages and blurred pages of electronic files, including:

[0090] Preprocessing module: cutting the electronic file image to be detected into at least one window, performing filtering and edge feature extraction preprocessing on the image of each window;

[0091] Blank page detection module: perform blank page matching on the image of each window, and output blank or non-blank matching results;

[0092] Fuzzy page detection module: perform blank page matching on the image of each preprocessed window, mark clear windows with blank matching results, perform fuzzy page detection on windows with non-blank matching results, and output clear, fuzzy or severely fuzzy test results.

[0093] Further, the fuzzy page detection module includes a blank page matching module, a fuzzy page pre-detection module, a voting module and a decision-making module;

[0094] Blank page matching module: perform blank page matching ...

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Abstract

The invention provides a method and device for detecting blank pages and fuzzy pages of an electronic file. Before detection, the device is trained for blank area detection to form a blank area detection model. Blank pages are matched based on the blank area detection model. The fuzzy page detection of the present invention relies on blank area detection, and treats the blank area as a clear image. The invention solves the problem of high false detection rate caused by uneven distribution of image content in the prior art, and solves the problem that blank areas are easily regarded as blurred images in fuzzy detection.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for detecting blank pages and blurred pages of electronic files. Background technique [0002] Since most of the paper files are digitized by scanners and high-speed cameras, it is inevitable that blank and blurred file images will be generated due to equipment performance and irregular operating procedures. The process of digitizing dossiers is as follows: figure 1 shown. [0003] A dossier consists of many different documents, many of which are printed on both sides. When scanning in batches, documents with odd pages will often scan out a blank page. Although many printers can filter blank pages at present, due to the complexity and diversity of images in dossier documents, they will still be scanned. Lots of blank images. There are also a lot of dossier materials that are digitized by high-speed cameras, often resulting in blurred dossier image...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/13
CPCG06T7/0002G06T2207/20024G06T2207/20081G06T2207/30168G06T7/13
Inventor 贺敏赵岳宁柯琳张春玮刘明王建超
Owner BEIJING THUNISOFT INFORMATION TECH
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