CN110909323A - Remote sensing image stream forwarding tracing method based on XML multi-label watermark - Google Patents
Remote sensing image stream forwarding tracing method based on XML multi-label watermark Download PDFInfo
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Abstract
The invention discloses a remote sensing image streaming tracing method based on XML multi-label watermarks.A, information embedding comprises the following steps of A, determining streaming information to form a plurality of labels; B. generating a plurality of random numbers according to the circulation information; C. determining an embedding position according to the random number; D. detecting whether relevant information is embedded, if so, turning to the step E, otherwise, turning to the step F; E. detecting whether each label is the same as the original record or not, if so, prompting a user that the recorded information is embedded, and ending the information embedding process, otherwise, modifying different labels; F. the tags are inserted into different positions in the document according to the insertion position sequence. The invention can improve the defects of the prior art and achieve the purpose of leaving the trace in a multi-label embedding mode under the condition of ensuring that the original data is not changed.
Description
Technical Field
The invention relates to the technical field of information hiding, in particular to a remote sensing image streaming tracing method based on XML multi-label watermarks.
Background
The remote sensing data transmission has large communication capacity and a plurality of types of transmittable services, information flow is possibly lost, diffused or leaked at each stage, and quality supervision needs to run through the whole processing flow. And a watermark label is added into the remote sensing data through an XML technology, so that a common data tracing method is provided. At present, the information hiding technology based on XML at home and abroad generally comprises the following steps:
(1) the attribute representation method and the naming of the mark in the XML document are changed, the font of the mark is changed, and the arrangement sequence of the elements with the same name and the size among the labels are changed. The method can be easily found out due to the change of the fonts and the intervals, and the concealment is not enough.
(2) Synonym conversion is carried out on the element names in the files, but the disadvantage is that firstly, a synonym library needs to be established; in addition, the XML is sensitive in case and case, which may cause the original analysis program not to be correctly analyzed; finally, if the XML is opened by a text editor, it is easy to find that many tags that are the same are replaced by synonyms, and the concealment is not sufficient.
(3) According to the encoding rule of XML, the single quotation mark and the double quotation mark have the same function when the quotation marks are used, so the single quotation mark is marked as 0, and the double quotation mark is marked as 1. The method has good concealment, but needs to count the number of single and double quotation marks, has large calculation amount and uncertain embedded information amount each time; redundant information is added according to spaces, tab marks, carriage returns and the like among attributes. This method has good concealment, but increases the data volume of the document, and puts a burden on data transmission.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a remote sensing image streaming tracing method based on XML multi-label watermarking, which can solve the defects of the prior art, achieve the purpose of trace retention by a multi-label embedding mode under the condition of ensuring that the original data is not changed, record the streaming process of remote sensing data, facilitate the tracing of supervision personnel, effectively protect the legal rights and interests of data producers, owners and users, and meet the confidentiality requirement of a confidential product for restricting user groups.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
A remote sensing image stream forwarding and tracing method based on XML multi-label watermark, information embedding includes the following steps,
A. determining circulation information to form a plurality of labels;
B. generating a plurality of random numbers according to the circulation information;
C. determining an embedding position according to the random number;
D. detecting whether relevant information is embedded, if so, turning to the step E, otherwise, turning to the step F;
E. detecting whether each label is the same as the original record or not, if so, prompting a user that the recorded information is embedded, and ending the information embedding process, otherwise, modifying different labels;
F. inserting the tags into different positions in the document according to the insertion position sequence;
the information extraction comprises the following steps of,
G. detecting whether circulation process information exists or not;
H. if yes, turning to the step I, otherwise, turning to the step J;
I. determining the position of each label, reading corresponding information and displaying;
J. and making a corresponding prompt to inform a user that the file does not have the circulation record information.
Preferably, in step a, forming the label comprises the steps of,
a1, carrying out Fourier decomposition on the circulation information;
a2, carrying out normal distribution fitting on the decomposed data components according to the signal intensity;
a3, forming a unique first label by using data components in the range of (mu-sigma, mu + sigma), and forming a plurality of second labels by using other data components; mu is the mean value of the fitted signal intensity, and sigma is the standard deviation of the fitted signal intensity;
and A4, encrypting the first label by using each second label to form a plurality of labels to be inserted.
Preferably, the encrypting the first label with the second label in step a4 includes the steps of,
a41, segmenting the first label, wherein the linear correlation degree of the characteristic vector of each segment of the first label and the characteristic vector of the second label is larger than a threshold value;
a42, forming a feature matrix by using the feature vectors of two adjacent sections of first labels, and then performing linear transformation on a second label by using the feature matrix;
a43, inserting the second label which is subjected to linear transformation between the two adjacent sections of the first labels in the step A42;
and A44, generating an encrypted mark point by using the data packet inserted into the position where the first label is adjacent to the second label.
Preferably, in step F, the label insertion comprises the steps of,
f1, performing data camouflage on the label to be inserted to enable the label to have at least one same feature vector with the document data in the disassembled position;
and F2, inserting the label to be inserted processed in the step F1 into the document, and then performing smoothing processing.
Preferably, in step I, reading the information comprises the steps of,
i1, detecting whether circulation process information exists;
i2, if the label exists, determining the position of each label, reading corresponding information and displaying; otherwise, a corresponding prompt is made to inform the user that the file does not have the circulation record information.
Adopt the beneficial effect that above-mentioned technical scheme brought to lie in: the invention can embed the related circulation information into the document; when data leakage occurs and the problem of copyright dispute is involved, the related circulation information can be extracted to determine the copyright. The inserted label used by the invention adopts a self-encryption mode, so that the operation amount is low, the encryption strength is high, the stability is high, and the information extraction at the later stage is convenient. In the process of inserting the label, special data disguising and smoothing processing is carried out on the inserted position, so that data errors caused by label insertion are reduced.
Drawings
Fig. 1 is a flow chart of information embedding in an embodiment of the present invention.
Fig. 2 is a flow chart of information extraction in an embodiment of the present invention.
Detailed Description
Referring to fig. 1-2, in one embodiment of the present invention,
the embedding of the information comprises the following steps,
A. determining circulation information to form a plurality of labels;
B. generating a plurality of random numbers according to the circulation information;
C. determining an embedding position according to the random number;
D. detecting whether relevant information is embedded, if so, turning to the step E, otherwise, turning to the step F;
E. detecting whether each label is the same as the original record or not, if so, prompting a user that the recorded information is embedded, and ending the information embedding process, otherwise, modifying different labels;
F. inserting the tags into different positions in the document according to the insertion position sequence;
the information extraction comprises the following steps of,
G. detecting whether circulation process information exists or not;
H. if yes, turning to the step I, otherwise, turning to the step J;
I. determining the position of each label, reading corresponding information and displaying;
J. and making a corresponding prompt to inform a user that the file does not have the circulation record information.
In step a, forming a label comprises the steps of,
a1, carrying out Fourier decomposition on the circulation information;
a2, carrying out normal distribution fitting on the decomposed data components according to the signal intensity;
a3, forming a unique first label by using data components in the range of (mu-sigma, mu + sigma), and forming a plurality of second labels by using other data components; mu is the mean value of the fitted signal intensity, and sigma is the standard deviation of the fitted signal intensity;
and A4, encrypting the first label by using each second label to form a plurality of labels to be inserted.
In step a4, encrypting the first label with the second label includes the steps of,
a41, segmenting the first label, wherein the linear correlation degree of the characteristic vector of each segment of the first label and the characteristic vector of the second label is larger than a threshold value;
a42, forming a feature matrix by using the feature vectors of two adjacent sections of first labels, and then performing linear transformation on a second label by using the feature matrix;
a43, inserting the second label which is subjected to linear transformation between the two adjacent sections of the first labels in the step A42;
and A44, generating an encrypted mark point by using the data packet inserted into the position where the first label is adjacent to the second label.
In step F, the label insertion comprises the following steps,
f1, performing data camouflage on the label to be inserted to enable the label to have at least one same feature vector with the document data in the disassembled position;
and F2, inserting the label to be inserted processed in the step F1 into the document, and then performing smoothing processing.
In step I, reading the information comprises the steps of,
i1, detecting whether circulation process information exists;
i2, if the label exists, determining the position of each label, reading corresponding information and displaying; otherwise, a corresponding prompt is made to inform the user that the file does not have the circulation record information.
And when the data camouflage is carried out on the label to be inserted, the encryption mark points in the label to be inserted are reserved. By reserving the encrypted mark points, on one hand, the position of the label is convenient to determine when information is read, and in addition, the corresponding key can be included when the encrypted mark points are generated, so that the decryption calculation of the encrypted label is convenient.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A remote sensing image stream forwarding tracing method based on XML multi-label watermarks is characterized in that:
the embedding of the information comprises the following steps,
A. determining circulation information to form a plurality of labels;
B. generating a plurality of random numbers according to the circulation information;
C. determining an embedding position according to the random number;
D. detecting whether relevant information is embedded, if so, turning to the step E, otherwise, turning to the step F;
E. detecting whether each label is the same as the original record or not, if so, prompting a user that the recorded information is embedded, and ending the information embedding process, otherwise, modifying different labels;
F. inserting the tags into different positions in the document according to the insertion position sequence;
the information extraction comprises the following steps of,
G. detecting whether circulation process information exists or not;
H. if yes, turning to the step I, otherwise, turning to the step J;
I. determining the position of each label, reading corresponding information and displaying;
J. and making a corresponding prompt to inform a user that the file does not have the circulation record information.
2. The remote sensing image streaming tracing method based on XML multi-tag watermark according to claim 1, wherein: in step a, forming a label comprises the steps of,
a1, carrying out Fourier decomposition on the circulation information;
a2, carrying out normal distribution fitting on the decomposed data components according to the signal intensity;
a3, forming a unique first label by using data components in the range of (mu-sigma, mu + sigma), and forming a plurality of second labels by using other data components; mu is the mean value of the fitted signal intensity, and sigma is the standard deviation of the fitted signal intensity;
and A4, encrypting the first label by using each second label to form a plurality of labels to be inserted.
3. The remote sensing image streaming tracing method based on XML multi-tag watermark according to claim 2, wherein: in step a4, encrypting the first label with the second label includes the steps of,
a41, segmenting the first label, wherein the linear correlation degree of the characteristic vector of each segment of the first label and the characteristic vector of the second label is larger than a threshold value;
a42, forming a feature matrix by using the feature vectors of two adjacent sections of first labels, and then performing linear transformation on a second label by using the feature matrix;
a43, inserting the second label which is subjected to linear transformation between the two adjacent sections of the first labels in the step A42;
and A44, generating an encrypted mark point by using the data packet inserted into the position where the first label is adjacent to the second label.
4. The remote sensing image streaming tracing method based on XML multi-tag watermark according to claim 3, wherein: in step F, the label insertion comprises the following steps,
f1, performing data camouflage on the label to be inserted to enable the label to have at least one same feature vector with the document data in the disassembled position;
and F2, inserting the label to be inserted processed in the step F1 into the document, and then performing smoothing processing.
5. The remote sensing image streaming tracing method based on XML multi-tag watermark according to claim 1, wherein: in step I, reading the information comprises the steps of,
i1, detecting whether circulation process information exists;
i2, if the label exists, determining the position of each label, reading corresponding information and displaying; otherwise, a corresponding prompt is made to inform the user that the file does not have the circulation record information.
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| CN116645067A (en) * | 2023-07-19 | 2023-08-25 | 江西微博科技有限公司 | Service integration model and service integration method based on transaction knowledge |
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