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Method and device for processing image

An image and symbol technology, used in image data processing, image data processing, instruments, etc., can solve the problems of low embedding efficiency, lack of universal applicability, and inability to embed hidden information in image data, achieving low cost and no hardware. Dependency, the effect of improving redundancy utilization

Active Publication Date: 2015-03-18
CHINA UNIONPAY
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Problems solved by technology

[0002] The 24-bit BMP image redundant space information hiding algorithm in the prior art does not have universal applicability, because if there is no redundant space in the image that needs to embed hidden information, that is, the number of pixels in each row of the image is an integer multiple of 4, then This method cannot realize the embedding of hidden information in the image data
Therefore, this method cannot use the redundant characteristics of the image content itself to further increase the capacity of embedded information, and the embedding efficiency is low

Method used

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Embodiment Construction

[0012] The specific implementation manners of the present invention will be described in further detail below with reference to the accompanying drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects of the embodiments. It may be apparent, however, to one skilled in the art that one or more aspects of the various embodiments may be practiced with a lesser degree of these specific details. The following description is therefore not to be seen as limiting, but rather the scope of protection is defined by the appended claims.

[0013] figure 1 is a flowchart of a method for embedding information in an image according to an embodiment of the present invention. figure 2 is a schematic diagram of a method for embedding information in an image according to an embodiment of the present invention. Such as figure 1 As shown, the method for embedding informatio...

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Abstract

The invention discloses a method and a device for processing an image. The method comprises the following steps: a, reading an original image, extracting LSB data of the image, and transforming the LSB data into initial LSB data stream in octal notation; b, encoding the initial LSB data stream to obtain encoded LSB data stream including an information embedding area; c, embedding information in the information embedding area; and d, converting the encoded LSB data stream including the information into a binary symbol and embedding the binary symbol into the LSB of the image to obtain the image of the embedded information.

Description

technical field [0001] The present invention relates to image processing, and more particularly to methods and apparatus for embedding information in images and extracting that information. Background technique [0002] The 24-bit BMP image redundant space information hiding algorithm in the prior art does not have universal applicability, because if there is no redundant space in the image that needs to embed hidden information, that is, the number of pixels in each row of the image is an integer multiple of 4, then This method cannot realize embedding hidden information in image data. Therefore, this method cannot use the redundant characteristics of the image content itself to further increase the capacity of embedded information, and the embedding efficiency is low. Contents of the invention [0003] According to an object of the present invention, a method for processing images is disclosed, comprising the following steps: a. read the original image, extract the LSB ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
Inventor 费志军尹亚伟鲁志军
Owner CHINA UNIONPAY
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