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Image watermark embedding method and extraction method for corrected color blindness image

A technology of image watermarking and extraction method, which is applied in the direction of image watermarking, image data processing, image data processing, etc., can solve the problems of destroying watermark, not considering colorblind image correction, etc., and achieves a good effect of robustness

Inactive Publication Date: 2018-06-29
HUBEI UNIV OF TECH
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Problems solved by technology

[0023] At present, most color image watermarking methods are developed without considering color-blindness image correction. When this watermark is embedded into a color-blindness-corrected image, due to color space problems, some parts or the entire embedded image will be destroyed. watermark

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  • Image watermark embedding method and extraction method for corrected color blindness image
  • Image watermark embedding method and extraction method for corrected color blindness image
  • Image watermark embedding method and extraction method for corrected color blindness image

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Embodiment approach

[0058] During concrete implementation, the present invention can adopt computer process to realize automatically: as figure 1 As shown, it is a partial implementation method of the watermark embedding of the present invention, which includes the following steps:

[0059] 1) Convert the original image from RGB space to LMS space;

[0060] 2) Separate the LMS space of the image into three channels of L, M, and S;

[0061] 3) Calculate the brightness component of the image;

[0062] 4) Multiply the brightness component Lum of the image with the prepared watermark w and the constant s to achieve the purpose of adjusting the watermark intensity;

[0063] 5) adding the watermark with adjusted intensity to the M component of the image to create the watermark component;

[0064] 6) Combining the watermark component with the L and S components of the image to obtain the LMS space image after embedding the watermark;

[0065] 7) Convert the image from the LMS space back to the RGB s...

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Abstract

The invention provides an image watermark embedding method for a corrected color blindness image. The method comprises the steps of firstly, converting an original image to an LMS space from an RGB space; separating the LMS space of the image into L, M and S channels; calculating a brightness component of the image; multiplying the brightness component Lum(i,j) of the image by a watermark w(i,j) and a constant s, and adjusting the strength of the watermark; then adding the watermark subjected to the strength adjustment to the channel with the maximum color component in the original image to create a watermark component; combining the watermark component with original another two color components of the image to obtain an LMS space image embedded with the watermark; and finally, convertingthe image to the RGB space from the LMS space, thereby obtaining an RGB image embedded with the watermark.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, and is a digital image watermark technology specially developed for color-blind image correction, and has good robustness for the most common color-blind image correction technology. Background technique [0002] (1) Digital image watermarking technology [0003] Digital watermarking technology belongs to information hiding technology. Digital watermarking refers to some digital information embedded in protected objects (such as still images, videos, etc.) that can prove its copyright ownership, which can be serial numbers, company logos, etc. Digital watermarking technology is a technology to embed watermark information into digital works by using the redundant data and randomness that are ubiquitous in digital works, so as to protect the copyright or integrity of digital products, so as to solve the problem of copyright protection of digital works. Applications in grayscale im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T1/005G06T2201/0065
Inventor 曾亮詹逸鹏朱飞李庚江鑫邱春辉万畅王粟
Owner HUBEI UNIV OF TECH
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