CN107071222B - A kind of image file encryption and decryption approaches being embedded in spectral information - Google Patents
A kind of image file encryption and decryption approaches being embedded in spectral information Download PDFInfo
- Publication number
- CN107071222B CN107071222B CN201710197455.0A CN201710197455A CN107071222B CN 107071222 B CN107071222 B CN 107071222B CN 201710197455 A CN201710197455 A CN 201710197455A CN 107071222 B CN107071222 B CN 107071222B
- Authority
- CN
- China
- Prior art keywords
- matrix
- image
- gray
- spectral information
- character
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32267—Methods relating to embedding, encoding, decoding, detection or retrieval operations combined with processing of the image
- H04N1/32272—Encryption or ciphering
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Transmission Control (AREA)
- Image Processing (AREA)
Abstract
The invention discloses a kind of image file encryption and decryption approaches for being embedded in spectral information, in the numerical matrix that spectroscopic data information is fused to that image demodulation goes out with a matrix type, using numerical transformation by the carry out gray scale layering of image RGB, it is denoted as R respectively, tri- gray matrixs of G and B, each element of spectra values matrix is stored in the RGB gray matrix of layering by numerical transformation sequence, the spectral information being added in picture in this way can only recall numerical solution by the method that this patent is decrypted, and when non-related people obtains picture, the information of shooting can only be seen from figure, it can't see hiding spectral information.In addition, image information and the curve of spectrum that the present invention obtains do not have to be retained separately and compress, but layering is merged into new type file, space is saved, so that the background process time is short.
Description
[technical field]
The invention belongs to field of image processings, are related to a kind of image file encryption and decryption approaches for being embedded in spectral information.
[background technique]
With the rapid development of network technology, while many acquisition of information, there is also information security technology hidden danger.Figure
As itself having important spatial information and object identification information, and in the picture can be anti-with the insertion of images match spectroscopic data
The performance of the characteristic to light of certain objects is answered, the identification of important objects information is enhanced.And these important informations are once flowed into
In irrelevant personnel's hand, will rapidly come forth disclosure, so administrative staff need to protect the interests of itself, this requires must
Encryption technology must be applied on the image of this insertion spectral information.The original document of existing imaging sensor output is to scheme
Based on information, and computer is input to data mode, this technology main target is intended to spectral information being embedded into image
In file, a kind of image information that novel information content is bigger is obtained, conventional monitoring device obtains and show respective image, right
The cognitive ability of object is limited.A kind of recently acquisition device using spectral information augmented image information, can
To obtain the image information and spectral information of object, so that the cognitive ability to object is improved, however existing analysis processing is soft
Part is difficult to effectively extract these two types of information.
[summary of the invention]
It is an object of the invention to overcome the above-mentioned prior art, a kind of image file for being embedded in spectral information is provided
Encryption and decryption approaches, this method are embedded in and the matched light of image/video stream in acquired image or video flowing
Spectrum information so that Spectrum Data Fusion in image data to the new file generated, wherein believing containing image and spectral mixing
Breath.Using the encryption method of data mixing, the light that when reading new file, only sees original image or video, and be embedded in
Spectrum information will not be shown;When needing to read spectrum, using the decryption method in the technology of the present invention by image and spectral information
Blended data draws out image and the curve of spectrum respectively.
In order to achieve the above objectives, the present invention is achieved by the following scheme:
A kind of image file encryption and decryption approaches being embedded in spectral information, comprising the following steps:
1) encryption method:
The color digital image that size is H × W pixel 1-1) is inputted and read, RGB three primary colours are colored image into
Gray values, be denoted as tri- individual gray matrixs of RGB respectively, while reading the single-point spectral information number of color digital image
According to S.data, the image values matrix A of H × W and 2048 × 2 spectra values matrix B are obtained, wherein [1,65535] H ∈, W ∈
[1,65535];
The RGB three-primary colours numerical matrix in A 1-2) is split into single gray matrix:
Imread (A), R=A (::, 1);G=A (::, 2);B=A (::, 3)
Each gray matrix is still the monochrome image numerical matrix of H × W;Find out the flat of each gray matrix numerical value
, the first row of spectrum data matrix B is divided into three sections, the matrix numerical value in each section is transformed into gray level image pair
In the rgb matrix answered, carries out corresponding with gray value and be not more than gray value;Again by the secondary series of spectrum matrix according to above-mentioned progress
Operation;
Obtain encrypted image;
2) decryption method:
2-1) inputting and reading size is H × (W+2) pixel digital picture, obtains character matrix D, wherein H≤2000;
Character matrix D 2-2) is split into the character matrix F of the character matrix E and 2 × 2000 of H × W;
The character matrix E of H × W 2-3) is generated to the color digital image of H × W pixel by Image Rendering function;
2 × 2000 character matrix F 2-4) is generated into spectral information data S.date by Drawing of Curve function.
A further improvement of the present invention lies in that:
The step 1-2) in, image information matrix A and spectral information matrix B are superimposed by the following method:
The row element value of image information matrix A is input to column vector Pi, the row element value of spectral information matrix B is inputted
To column vector Pj, by column vector PiWith column vector PjIt is assigned to the character matrix C of i × j, wherein i=1,2,3 ..., H, j=1,2,
3 ..., H, and i and j is integer.
The step 2-2) in, character matrix D is split into the character matrix F's of the character matrix E and 2 × 2000 of H × W
The specific method is as follows:
By each element value assignment of H row and the W column of character matrix D to column vector Qi, by column vector QiEach value assignment
Into the character matrix E of H × W;By each element value assignment of the W+1 column of character matrix D and W+2 column to column vector Qj,
By column vector QjEach value assignment into 2 × 2000 character matrix F;Wherein i=1,2,3 ..., H, j=1,2,3 ..., H,
And i and j is integer.
Compared with prior art, the invention has the following advantages:
Good confidentiality of the present invention is mainly reflected in spectroscopic data information and is fused to the number that image demodulation goes out with a matrix type
In value matrix, using numerical transformation by the carry out gray scale layering of image RGB, it is denoted as tri- gray matrixs of R, G and B respectively, by light
Each element of spectrum numerical matrix is stored in the RGB gray matrix of layering by numerical transformation sequence, is added in such picture
Spectral information can only by this patent decrypt method numerical solution is recalled, and when non-related people obtain picture when, only
The information that shooting can be seen from figure, can't see hiding spectral information.In addition, the image information and spectrum that the present invention obtains are bent
Line does not have to be retained separately and compress, but layering is merged into new type file, space is saved, so that the background process time
It is short.
[Detailed description of the invention]
Fig. 1 is the flow chart of encryption method of the present invention;
Fig. 2 is the flow chart of decryption method of the present invention.
[specific embodiment]
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1 and Fig. 2, the present invention is embedded in the image file encryption and decryption approaches of spectral information, which is characterized in that packet
Include following steps:
1) encryption method:
The color digital image that size is H × W pixel 1-1) is inputted and read, RGB three primary colours are colored image into
Gray values, be denoted as tri- individual gray matrixs of RGB respectively, while reading the single-point spectral information number of color digital image
According to S.data, the image values matrix A of H × W and 2048 × 2 spectra values matrix B are obtained, wherein H ∈ [1,65535] W ∈
[1,65535];
The RGB three-primary colours numerical matrix in A 1-2) is split into single gray matrix:
Imread (A), R=A (::, 1);G=A (::, 2);B=A (::, 3);
Every the monochrome image numerical matrix that a gray matrix is still H × W.Find out the flat of each gray matrix numerical value
, the first row of spectrum data matrix B is divided into three sections, the matrix numerical value in each section is transformed into gray level image pair
In the rgb matrix answered, carries out corresponding with gray value and be not more than gray value.Again by the secondary series of spectrum matrix according to above-mentioned progress
Operation.
Obtain encrypted image.
2) decryption method:
2-1) inputting and reading size is H × (W+2) pixel digital picture, obtains character matrix D, wherein H≤2000;
Character matrix D 2-2) is split into the character matrix F of the character matrix E and 2 × 2000 of H × W, specific method is such as
Under:
By each element value assignment of H row and the W column of character matrix D to column vector Qi, by column vector QiEach value assignment
Into the character matrix E of H × W;By each element value assignment of the W+1 column of character matrix D and W+2 column to column vector Qj,
By column vector QjEach value assignment into 2 × 2000 character matrix F;Wherein i=1,2,3 ..., H, j=1,2,3 ..., H,
And i and j is integer.
The character matrix E of H × W 2-3) is generated to the color digital image of H × W pixel by Image Rendering function;
2 × 2000 character matrix F 2-4) is generated into spectral information data S.date by Drawing of Curve function.
Fig. 1, while obtaining image information and matched spectral information, extract the file of picture format and being decoded into number
According to form, spectral information itself can save as data mode, and both the above information is stored with data mode onto computer,
It is rearranged into new file type using data matrix, and is named for the new File of the blended data.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (3)
1. a kind of image file encryption and decryption approaches for being embedded in spectral information, which comprises the following steps:
1) encryption method:
The color digital image that size is H × W pixel 1-1) is inputted and read, color digital image is converted into RGB three primary colours
Gray values, be denoted as tri- individual gray matrixs of RGB respectively, while reading the single-point spectral information number of color digital image
According to S.data, the image values matrix A of H × W and 2048 × 2 spectra values matrix B are obtained, wherein [1,65535] H ∈, W ∈
[1,65535];
The RGB three-primary colours numerical matrix in A 1-2) is split into single gray matrix:
Imread (A), R=A (::, 1);G=A (::, 2);B=A (::, 3)
Each gray matrix is still the monochrome image numerical matrix of H × W;Being averaged for each gray matrix numerical value is found out, it will
The first row of spectrum data matrix B is divided into three sections, and it is corresponding that the matrix numerical value in each section is transformed to gray level image
In rgb matrix, carries out corresponding with gray value and be not more than gray value;The secondary series of spectrum matrix is grasped according to above-mentioned again
Make;
Obtain encrypted image;
2) decryption method:
2-1) inputting and reading size is H × (W+2) pixel gray-scale image, obtains character matrix D, wherein H≤2000;
Character matrix D 2-2) is split into the character matrix F of the character matrix E and 2 × 2000 of H × W;
The character matrix E of H × W 2-3) is generated to the color digital image of H × W pixel by Image Rendering function;
2 × 2000 character matrix F 2-4) is generated into spectral information data S.date by Drawing of Curve function.
2. the image file encryption and decryption approaches of insertion spectral information according to claim 1, which is characterized in that described
Step 1-2) in, image values matrix A and spectra values matrix B are superimposed by the following method:
The row element value of image values matrix A is input to column vector Pi, the row element value of spectra values matrix B is input to column
Vector Pj, by column vector PiWith column vector PjIt is assigned to the character matrix C of i × j, wherein i=1,2,3 ..., H, j=1,2,
3 ..., H, and i and j is integer.
3. the image file encryption and decryption approaches of insertion spectral information according to claim 1, which is characterized in that described
Step 2-2) in, character matrix D is split into the specific method of the character matrix F of the character matrix E and 2 × 2000 of H × W such as
Under:
By each element value assignment of H row and the W column of character matrix D to column vector Qi, by column vector QiEach value assignment to H
In the character matrix E of × W;By each element value assignment of the W+1 column of character matrix D and W+2 column to column vector Qj, will arrange
Vector QjEach value assignment into 2 × 2000 character matrix F;Wherein i=1,2,3 ..., H, j=1,2,3 ..., H, and i
It is integer with j.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710197455.0A CN107071222B (en) | 2017-03-29 | 2017-03-29 | A kind of image file encryption and decryption approaches being embedded in spectral information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710197455.0A CN107071222B (en) | 2017-03-29 | 2017-03-29 | A kind of image file encryption and decryption approaches being embedded in spectral information |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107071222A CN107071222A (en) | 2017-08-18 |
CN107071222B true CN107071222B (en) | 2019-02-01 |
Family
ID=59618299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710197455.0A Active CN107071222B (en) | 2017-03-29 | 2017-03-29 | A kind of image file encryption and decryption approaches being embedded in spectral information |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107071222B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113452688B (en) * | 2021-06-24 | 2022-07-08 | 山东三未信安信息科技有限公司 | Image encryption and decryption method and device based on SM4 and SM2 algorithms |
CN115230359A (en) * | 2022-09-22 | 2022-10-25 | 江苏铨通印数字印刷有限公司 | Intelligent digital printing anti-counterfeiting mark generation and use method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103884427A (en) * | 2014-03-11 | 2014-06-25 | 清华大学 | Hyperspectral and high-spatial-resolution image obtaining method and device |
US20150268017A1 (en) * | 2014-03-24 | 2015-09-24 | Triple D Tracker | Encrypted spectral taggant for a cartridge |
CN106454076B (en) * | 2016-09-26 | 2019-04-12 | 西安交通大学 | A kind of acquisition device using spectral information augmented image information |
-
2017
- 2017-03-29 CN CN201710197455.0A patent/CN107071222B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN107071222A (en) | 2017-08-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Lukac et al. | Color image processing: methods and applications | |
Kabulov et al. | Algorithmic method of security of the Internet of Things based on steganographic coding | |
Fridrich | Steganography in digital media: principles, algorithms, and applications | |
Al-Frajat et al. | Hiding data in video file: An overview | |
US6697498B2 (en) | Method and computer program product for hiding information in an indexed color image | |
US20080089554A1 (en) | Device and method for digitally watermarking an image with data | |
WO2019092463A1 (en) | Video image processing | |
EP1439716A1 (en) | Spectrum and color reproduction system | |
KR101341482B1 (en) | Network photographing apparatus having a partial encryption function | |
CN107071222B (en) | A kind of image file encryption and decryption approaches being embedded in spectral information | |
Alwan et al. | Color image steganography in YCbCr space | |
JP2014519727A (en) | Efficient expression and processing method of color pixel data in digital pathological image | |
COŞKUN et al. | A new digital image steganography algorithm based on visible wavelength | |
KR20190028046A (en) | Historical studies method and system using augmented reality | |
CN107392833A (en) | A kind of adding method and adding set of the picture watermark based on smart machine | |
US7724901B2 (en) | Image processing method | |
CN111325652A (en) | Information embedding method, information extracting method, information embedding device, information extracting device, information embedding equipment and computer readable storage medium | |
KR101603201B1 (en) | Image key certification method and system using color histogram and texture information of image | |
Durdu | A new reversible low-distortion steganography method that hides images into RGB images with low loss | |
JPH01292965A (en) | Data synthesizing method | |
Pinto et al. | Protection of JPEG compressed e-comics by selective encryption | |
Sallow et al. | An Investigation for Steganography using Different Color System | |
Rajput et al. | Cloud based image color transfer and storage in encrypted domain | |
Prabakaran et al. | Dual Wavelet Transform Used in Color Image Steganography Method | |
KR101717079B1 (en) | Image key certification method and system related to redundancy of color histogram information |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |