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Color image zero-watermark algorithm based on ternary number decimal order polar complex exponential transformation

A color image and original color image technology, applied in the field of image processing, can solve the problems of information redundancy and high computational cost

Inactive Publication Date: 2021-07-06
QILU UNIV OF TECH
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Problems solved by technology

The continuous orthogonal moments of quaternions preserve the relationship between the three channels of color images, but the fourth dimension of quaternions produces information redundancy when processing color images, and the computational cost is high

Method used

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  • Color image zero-watermark algorithm based on ternary number decimal order polar complex exponential transformation
  • Color image zero-watermark algorithm based on ternary number decimal order polar complex exponential transformation
  • Color image zero-watermark algorithm based on ternary number decimal order polar complex exponential transformation

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Embodiment Construction

[0107] In order to clearly illustrate the technical characteristics of the present invention, the appended claims is further illustrated in connection with the accompanying drawings.

[0108] A color image zero-printing algorithm based on three-grade decimal complex index transform, assuming i = = {f (x, y), 0 ≤ x, y ≤ n} is the original color image, L = {L (i, J), 0 ≤ i ≤ P, 0 ≤ j ≤ Q} is the original two-value logo image, a color image zero-proprier algorithm based on three-element decimal complex index transformation, including the following steps,

[0109] a. Calculate the three-dimensional decimal complex index transformation of the original color image;

[0110] b. Transform the triplet decimal complex index to the step A by copying the extension configuration and the magnitude sequence of the original binary LOGO image;

[0111] c. Database sequences obtained in step B is obtained by binary sequence sequence;

[0112] d. Change the binary amplitude amplitude sequence to a b...

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Abstract

The invention relates to a color image zero-watermarking algorithm based on ternary number decimal order polar complex exponential transformation, which comprises the following steps: a, calculating ternary number decimal order polar complex exponential transformation of an original color image; b, constructing an amplitude sequence through copying and expanding; c, carrying out binarization processing on the amplitude sequence to obtain a binarized amplitude sequence; d, changing the binary amplitude sequence into a binary feature image; e, embedding the LOGO image into the binary feature image by using an XOR operation to obtain a zero-watermark image; and f, finally carrying out zero watermark verification. According to the method, a ternary number theory is combined, ternary number decimal order polar complex exponential transformation is constructed, the relationship among three channels of the color image is utilized, information redundancy is avoided, and the expression and calculation efficiency of the color image is improved. And the constructed ternary number decimal order polar complex exponential transformation is applied to the color image reconstruction and zero watermark algorithm, so that the good stability of the ternary number decimal order polar complex exponential transformation is verified.

Description

Technical field [0001] The present invention relates to the field of image processing, and more particularly to a color image zero water printing algorithm, specifically, a color image zero water printing algorithm based on three-element number decimal complex index transformation. Background technique [0002] The concept of the moment appears in the field of statistically and classic mechanics. In 1962, the HU was first proposed by the HU for the first time and introduced the image processing field, and an image torque theory for describing image features was proposed. The image torque as a multi-distortion-free image feature describing the image, is widely applied to various fields of image processing, such as image watermark, face recognition, and image analysis. After the HU is raised, the scholars have proposed Geometric Moments, Complex Moments, and Rotational Moments. However, the basic functions of these torles are non-orthogonal, and there is a non-orthogonal torque, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021
Inventor 王春鹏高红翎夏之秋马宾李健李琦王晓雨
Owner QILU UNIV OF TECH
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