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Image processing device and method

An image processing device and document image technology, applied in the field of image processing, can solve the problems affecting the accuracy of background detection, and achieve the effect of accurate foreground area and accurate background area.

Active Publication Date: 2017-01-04
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existence of background penetration seriously affects the accuracy of background detection

Method used

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  • Image processing device and method
  • Image processing device and method
  • Image processing device and method

Examples

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Embodiment Construction

[0022] Examples of the present disclosure will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the disclosure, application or uses.

[0023] Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known structures, and well-known technologies are not described in detail.

[0024] The present disclosure proposes a documen...

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Abstract

The disclosure relates to an image processing device and method. The device comprises a classification unit used for respectively classifying pixels of a first side document and a second side document of a double-sided document to obtain a first candidate background pixel set and a second candidate background pixel set, a determination unit used for determining a specific position of the double-sided document, a calculation unit used for calculating a first intensity threshold and a gradient threshold based on the intensity value and the gradient value of a pixel at the specific position of the first candidate background pixel set, a background obtainment unit used for classifying pixels in the first candidate background pixel set according to the first intensity threshold and the gradient threshold to obtain a uniform background pixel set as a background area of the first side document, and a foreground obtainment unit used for removing the background area in the first side document to obtain a foreground area of the first side document. Pixels at the specific position of the first side document and the second side document belong to the first candidate background pixel set and the second candidate background pixel set respectively.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to an image processing device and method for document image segmentation. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] The purpose of document image segmentation in layout analysis is to extract text regions such as text, images, tables, and halftones. This technique is widely used in document organization, retrieval and understanding. Since the subsequent document image understanding, including page classification, is based on document segmentation results, the performance of document segmentation is very critical. [0004] Traditional methods compute specific features such as font information, connected domains, and textures from text images. However, many scanned documents are complex, containing text, images of natural scenes, tables and even half...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T2207/30176
Inventor 曹琼刘汝杰
Owner FUJITSU LTD
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