CN107240060A - Security against fire based on dynamic digital watermark checks picture method for anti-counterfeit and system - Google Patents
Security against fire based on dynamic digital watermark checks picture method for anti-counterfeit and system Download PDFInfo
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- CN107240060A CN107240060A CN201710388887.XA CN201710388887A CN107240060A CN 107240060 A CN107240060 A CN 107240060A CN 201710388887 A CN201710388887 A CN 201710388887A CN 107240060 A CN107240060 A CN 107240060A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
Abstract
Picture method for anti-counterfeit is checked the present invention relates to a kind of security against fire based on dynamic digital watermark, according to different embedded devices, different users, different use times, different application targets, it is dynamic to add digital watermarking in security against fire checks picture, image is uploaded onto the server behind end, manager extracts watermark information, the authenticity of authentication image from image.Also a kind of security against fire based on dynamic digital watermark of the present invention checks picture Antiforge system.Advantages of the present invention is embodied in：By the technology, evidence will be preserved and played a key effect in fire investigation work, and can prevent from distorting evidence influence thermal transfer conclusion.Using the technology, it can prevent work from performing imitation behavior in fire-fighting inspection work.
Description
Technical field
Field is checked the present invention relates to security against fire, and in particular to the security against fire based on dynamic digital watermark checks picture
Method for anti-counterfeit and system.
Background technology
The fire prevention monitoring work of the security against fire inspection and supervision unit of present society unit, majority is hand-written note
A few thing result is recorded, the course of work is not recorded；There are some units to be equipped with digital camera as scene for staff
Situation equipments of recording.These methods are difficult to ensure that work completes quality and efficiency, and manager also is difficult to find to ask present in it
The problems such as topic, particularly generation inspection, missing inspection, false picture.
The content of the invention
The purpose of the present invention is that there is provided a kind of security against fire based on dynamic digital watermark for deficiency of the prior art
Check picture method for anti-counterfeit and system, it is ensured that the completion quality and efficiency of Fire Escape.
To achieve the above object, the invention discloses following technical scheme：
Security against fire based on dynamic digital watermark checks picture method for anti-counterfeit, according to different embedded devices, difference
User, different use times, different application targets, dynamically add digital water in security against fire checks picture
Print, image is uploaded onto the server behind end, and manager extracts watermark information, the authenticity of authentication image from image.
Further, following steps are specifically included：
S1 digital watermark embeddings：
S101 defines watermark information：During including handheld sequence number, user's job number, photograph taking date, photograph taking
Between, perform task number；
S102 synthetic water impressions：In built-in system software, watermark information is pressed into handheld sequence number, Yong Hugong
Number, the photograph taking date, the photograph taking time, perform task number order, line up the five-element from the top down, generate picture, need every time
Dynamic generation when wanting, watermark recovery is different every time, as dynamic watermark；
S103 watermark encoders are embedded in：
S1031 image color spaces are changed：Shot by handheld device 24 real color images are temporarily stored into FLASH,
Original image and watermarking images are converted to YIQ color spaces by system first；
The wavelet transformation of S1032 images：Y-component to original image YIQ planes carries out three-level wavelet decomposition；
Watermarking images are carried out resolution decomposition by S1033；
S1034 embedding strategies：Wavelet coefficient after initial carrier image X is decomposed sorts after taking absolute value, according to insertion
The size of information content determines embedded threshold value k, and only absolute value is more than k wavelet coefficient embedding information, then judges each coefficient
Whether it is more than k, watermark is embedded in if k is more than, and record its position；
S1035 recovers RGB image：Wavelet coefficient after adjustment is carried out to small echo inversion respectively and obtains new luminance component
Y ', then Y ' is combined with original I, Q component and RGB color is converted to, obtain containing watermarking images；
S2 digital watermarkings are extracted：
S201 watermarks decoding is extracted：By original image and the conversion that RGB to YIQ is carried out containing watermarking images, then by Y-component
Three-level wavelet decomposition, the embedded location recorded during according to embedded watermark, extracts watermark information, and according to three extraction of values, step-by-step is put down
Opposite sequence when face is decomposed recovers data, the negative sign preserved during according to embedded watermark and position, negative to being added before corresponding coefficient
Number, then DWT inverse transformations are carried out, recover watermark；
S202 decomposition water impressions：It is five figures according to certain pixel size level cutting by obtained watermarking images, point
Wei not handheld sequence number, user's job number, photograph taking date, photograph taking time, execution task number figure；
S203 parses watermark information：Using OCR technique, the digital information in five figures, the authenticity of authentication image are recognized.
Further, the information format of the watermark information is：
Handheld device sequence number：32 hexadecimal numbers, the above zero padding less than 32；
User's job number：6 decimal numbers, are above zero padding less than 6；
The photograph taking date：8 decimal numbers, its middle age four, the moon two, the moon above zero padding less than two；Day two,
Day above zero padding less than two；
The photograph taking time：8 decimal numbers, wherein, Shi Liangwei, when less than two above zero padding；It is divided to two, point deficiency
Two above zero paddings；Second two, second above zero padding less than two；
Perform task number：32 hexadecimal numbers, the above zero padding less than 32.
Further, in the step S1034, the algorithm of watermark insertion is as follows：
The discrete cosine transform (DCT) of image is first calculated, then by the preceding k systems of watermark superposition amplitude maximum into DCT domain
(not including DC component) on number, the usually low frequency component of image.If the preceding k largest component of DCT coefficient is expressed as D=
{di, i=1 ..., k, watermark are the random sequence of real numbers W={ w of Gaussian distributedi, i=1 ..., k, then watermark it is embedding
Entering algorithm is
{di}={ di}(1+α{wi),
Wherein constant α is scale factor, and then the intensity of control watermark addition do inverse transformation with new coefficient and obtain watermark
Image.
Further, in the step S203, during authentication image authenticity, manager extracts the numeral of addition from image
Watermark, is compared with database information, confirms the authenticity of image.
Security against fire based on dynamic digital watermark checks picture Antiforge system, including digital watermark embedding module and numeral
Watermark extracting module：
The digital watermark embedding module includes
Watermark information definition module：For obtaining handheld sequence number, user's job number, photograph taking date, photo bat
Take the photograph the time, perform task number；
Watermark figure synthesis module：In built-in system software, watermark information is pressed into handheld sequence number, Yong Hugong
Number, the photograph taking date, the photograph taking time, perform task number order, line up the five-element from the top down, generate picture, need every time
Dynamic generation when wanting, watermark recovery is different every time, as dynamic watermark；
Watermark encoder is embedded in module：Including image color space transform subblock：It is true by 24 shot by handheld device
Color image is temporarily stored into FLASH, and original image and watermarking images are converted to YIQ color spaces by system first；Image wavelet
Transformation submodule：Y-component to original image YIQ planes carries out three-level wavelet decomposition；Resolution decomposition module：By watermarking images
Carry out resolution decomposition；Embedded module：Wavelet coefficient after initial carrier image X is decomposed sorts after taking absolute value, according to embedding
The size for entering information content determines embedded threshold value k, and only absolute value is more than k wavelet coefficient embedding information, then judges each system
Whether number is more than k, watermark is embedded in if k is more than, and record its position；Recover RGB image module：By the wavelet coefficient after adjustment
Small echo inversion is carried out respectively and obtains new luminance component Y ', then Y ' is combined with original I, Q component and RGB color sky is converted to
Between, obtain containing watermarking images；
The digital watermarking extraction module includes
Watermark decodes extraction module：By original image and the conversion that RGB to YIQ is carried out containing watermarking images, then by Y-component
Three-level wavelet decomposition, the embedded location recorded during according to embedded watermark, extracts watermark information, and according to three extraction of values, step-by-step is put down
Opposite sequence when face is decomposed recovers data, the negative sign preserved during according to embedded watermark and position, negative to being added before corresponding coefficient
Number, then DWT inverse transformations are carried out, recover watermark；
Watermark figure decomposing module：It is five figures according to certain pixel size level cutting by obtained watermarking images, point
Wei not handheld sequence number, user's job number, photograph taking date, photograph taking time, execution task number figure；
Watermark information parsing module：Using OCR technique, the digital information in five figures, the authenticity of authentication image are recognized.
A kind of security against fire based on dynamic digital watermark disclosed by the invention checks picture method for anti-counterfeit and system, has
Following beneficial effect：
1. by the technology, evidence will be preserved and played a key effect in fire investigation work, and can prevent from distorting
Evidence influences thermal transfer conclusion.
2. utilizing the technology, it can prevent work from performing imitation behavior in fire-fighting inspection work.
Brief description of the drawings
Fig. 1 is System Working Principle figure,
Fig. 2 is watermark bitmap-format schematic diagram.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
The core of the present invention is to provide a kind of security against fire based on dynamic digital watermark and checks picture method for anti-counterfeit and be
System, it is ensured that the completion quality and efficiency of Fire Escape.
Refer to Fig. 1.
Security against fire based on dynamic digital watermark checks picture method for anti-counterfeit, according to different embedded devices, difference
User, different use times, different application targets, dynamically add digital water in security against fire checks picture
Print, image is uploaded onto the server behind end, and manager extracts watermark information, the authenticity of authentication image from image.
In an embodiment of the present invention, following steps are specifically included：
S1 digital watermark embeddings：
S101 defines watermark information：During including handheld sequence number, user's job number, photograph taking date, photograph taking
Between, perform task number；
S102 synthetic water impressions：In built-in system software, watermark information is pressed into handheld sequence number, Yong Hugong
Number, the photograph taking date, the photograph taking time, perform task number order, line up the five-element from the top down, generate a 180*180
The picture of pixel, dynamic generation when needing every time, watermark recovery is different every time, as dynamic watermark；
S103 watermark encoders are embedded in：
S1031 image color spaces are changed：By 24 real color images 800 × 600 shot by handheld device, it is temporarily stored into
In FLASH, original image and watermarking images are converted to YIQ color spaces by system first；
The wavelet transformation of S1032 images：Y-component to original image YIQ planes carries out three-level wavelet decomposition；
Watermarking images are carried out resolution decomposition by S1033；
S1034 embedding strategies：Wavelet coefficient after initial carrier image X is decomposed sorts after taking absolute value, according to insertion
The size of information content determines embedded threshold value k, and only absolute value is more than k wavelet coefficient embedding information, then judges each coefficient
Whether it is more than k, watermark is embedded in if k is more than, and record its position；
S1035 recovers RGB image：Wavelet coefficient after adjustment is carried out to small echo inversion respectively and obtains new luminance component
Y ', then Y ' is combined with original I, Q component and RGB color is converted to, obtain containing watermarking images；
S2 digital watermarkings are extracted：
S201 watermarks decoding is extracted：By original image and the conversion that RGB to YIQ is carried out containing watermarking images, then by Y-component
Three-level wavelet decomposition, the embedded location recorded during according to embedded watermark, extracts watermark information, and according to three extraction of values, step-by-step is put down
Opposite sequence when face is decomposed recovers data, the negative sign preserved during according to embedded watermark and position, negative to being added before corresponding coefficient
Number, then DWT inverse transformations are carried out, recover watermark；
S202 decomposition water impressions：It is five figures according to 16*180 pixel size level cutting by obtained watermarking images,
Respectively handheld sequence number, user's job number, the photograph taking date, the photograph taking time, perform task number figure；
S203 parses watermark information：Using OCR technique, the digital information in five figures, the authenticity of authentication image are recognized.
In an embodiment of the present invention, the information format of the watermark information is：
Handheld device sequence number：32 hexadecimal numbers, the above zero padding less than 32；
User's job number：6 decimal numbers, are above zero padding less than 6；
The photograph taking date：8 decimal numbers, its middle age four, the moon two, the moon above zero padding less than two；Day two,
Day above zero padding less than two；
The photograph taking time：8 decimal numbers, wherein, Shi Liangwei, when less than two above zero padding；It is divided to two, point deficiency
Two above zero paddings；Second two, second above zero padding less than two；
Perform task number：32 hexadecimal numbers, the above zero padding less than 32.
In an embodiment of the present invention, in the step S1034, the algorithm of watermark insertion is as follows：
The discrete cosine transform (DCT) of image is first calculated, then by the preceding k systems of watermark superposition amplitude maximum into DCT domain
(not including DC component) on number, the usually low frequency component of image.If the preceding k largest component of DCT coefficient is expressed as D=
{di, i=1 ..., k, watermark are the random sequence of real numbers W={ w of Gaussian distributedi, i=1 ..., k, then watermark it is embedding
Entering algorithm is
{di}={ di}(1+α{wi),
Wherein constant α is scale factor, and then the intensity of control watermark addition do inverse transformation with new coefficient and obtain watermark
Image.
In an embodiment of the present invention, in the step S203, during authentication image authenticity, manager is from image
The digital watermarking added is extracted, is compared with database information, the authenticity of image is confirmed.
Security against fire inspection picture Antiforge system disclosed by the invention based on dynamic digital watermark, including digital watermarking are embedding
Enter module and digital watermark extracting module：
The digital watermark embedding module includes
Watermark information definition module：For obtaining handheld sequence number, user's job number, photograph taking date, photo bat
Take the photograph the time, perform task number；
Watermark figure synthesis module：In built-in system software, watermark information is pressed into handheld sequence number, Yong Hugong
Number, the photograph taking date, the photograph taking time, perform task number order, line up the five-element from the top down, generate picture, need every time
Dynamic generation when wanting, watermark recovery is different every time, as dynamic watermark；
Watermark encoder is embedded in module：Including image color space transform subblock：It is true by 24 shot by handheld device
Color image is temporarily stored into FLASH, and original image and watermarking images are converted to YIQ color spaces by system first；Image wavelet
Transformation submodule：Y-component to original image YIQ planes carries out three-level wavelet decomposition；Resolution decomposition module：By watermarking images
Carry out resolution decomposition；Embedded module：Wavelet coefficient after initial carrier image X is decomposed sorts after taking absolute value, according to embedding
The size for entering information content determines embedded threshold value k, and only absolute value is more than k wavelet coefficient embedding information, then judges each system
Whether number is more than k, watermark is embedded in if k is more than, and record its position；Recover RGB image module：By the wavelet coefficient after adjustment
Small echo inversion is carried out respectively and obtains new luminance component Y ', then Y ' is combined with original I, Q component and RGB color sky is converted to
Between, obtain containing watermarking images；
The digital watermarking extraction module includes
Watermark decodes extraction module：By original image and the conversion that RGB to YIQ is carried out containing watermarking images, then by Y-component
Three-level wavelet decomposition, the embedded location recorded during according to embedded watermark, extracts watermark information, and according to three extraction of values, step-by-step is put down
Opposite sequence when face is decomposed recovers data, the negative sign preserved during according to embedded watermark and position, negative to being added before corresponding coefficient
Number, then DWT inverse transformations are carried out, recover watermark；
Watermark figure decomposing module：It is five figures according to certain pixel size level cutting by obtained watermarking images, point
Wei not handheld sequence number, user's job number, photograph taking date, photograph taking time, execution task number figure；
Watermark information parsing module：Using OCR technique, the digital information in five figures, the authenticity of authentication image are recognized.
The present invention is to be used in security against fire inspection and fire prevention monitoring system FTP-01 type Intelligent fire-fighting terminals.Pass through
Add the watermark information of change into image, distinguish Same Scene not in the same time, distinct device, different users are captured schemes
Piece.It is related to security against fire inspection and captured picture during fire prevention monitoring, prevents from artificially distorting.
Described above is only the preferred embodiment of the present invention, rather than its limitations；Although it should be pointed out that with reference to above-mentioned each
The present invention is described in detail embodiment, it will be understood by those within the art that, it still can be to above-mentioned each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part or all technical characteristic；And this
A little modifications and replacement, do not make the essence of corresponding technical scheme depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. security against fire based on dynamic digital watermark checks picture method for anti-counterfeit, it is characterised in that according to different embedded
Equipment, different users, different use times, different application targets, dynamically add in security against fire checks picture
Enter digital watermarking, image is uploaded onto the server behind end, manager extracts watermark information, the authenticity of authentication image from image.
2. the security against fire according to claim 1 based on dynamic digital watermark checks picture method for anti-counterfeit, its feature exists
In specifically including following steps：
S1 digital watermark embeddings：
S101 defines watermark information：Including handheld sequence number, user's job number, the photograph taking date, the photograph taking time, hold
Row task number；
S102 synthetic water impressions：In built-in system software, watermark information is pressed into handheld sequence number, user's job number, shone
Piece shooting date, photograph taking time, execution task number order, line up the five-element, generate picture, moved when needing every time from the top down
State is generated, and watermark recovery is different every time, as dynamic watermark；
S103 watermark encoders are embedded in：
S1031 image color spaces are changed：Shot by handheld device 24 real color images are temporarily stored into FLASH, system
Original image and watermarking images are converted into YIQ color spaces first；
The wavelet transformation of S1032 images：Y-component to original image YIQ planes carries out three-level wavelet decomposition；
Watermarking images are carried out resolution decomposition by S1033；
S1034 embedding strategies：Wavelet coefficient after initial carrier image X is decomposed sorts after taking absolute value, according to embedding information
The size of amount determines embedded threshold value k, and only absolute value is more than k wavelet coefficient embedding information, whether then judges each coefficient
More than k, watermark is embedded in if k is more than, and record its position；
S1035 recovers RGB image：Wavelet coefficient after adjustment is carried out to small echo inversion respectively and obtains new luminance component Y ', then
Y ' is combined with original I, Q component and RGB color is converted to, obtains containing watermarking images；
S2 digital watermarkings are extracted：
S201 watermarks decoding is extracted：By original image and the conversion that RGB to YIQ is carried out containing watermarking images, then by Y-component three-level
Wavelet decomposition, the embedded location recorded during according to embedded watermark, extracts watermark information, according to three extraction of values, by bit plane point
Opposite sequence during solution recovers data, the negative sign preserved during according to embedded watermark and position, to adding negative sign before corresponding coefficient, then
DWT inverse transformations are carried out, watermark is recovered；
S202 decomposition water impressions：By obtained watermarking images, it is five figures according to certain pixel size level cutting, is respectively
Handheld sequence number, user's job number, photograph taking date, photograph taking time, execution task number figure；
S203 parses watermark information：Using OCR technique, the digital information in five figures, the authenticity of authentication image are recognized.
3. the security against fire according to claim 1 based on dynamic digital watermark checks picture method for anti-counterfeit, its feature exists
In the information format of the watermark information is：
Handheld device sequence number：32 hexadecimal numbers, the above zero padding less than 32；
User's job number：6 decimal numbers, are above zero padding less than 6；
The photograph taking date：8 decimal numbers, its middle age four, the moon two, the moon above zero padding less than two；Day two, day is not
The above zero padding of two, foot；
The photograph taking time：8 decimal numbers, wherein, Shi Liangwei, when less than two above zero padding；It is divided to two, is divided to less than two
Above zero padding；Second two, second above zero padding less than two；
Perform task number：32 hexadecimal numbers, the above zero padding less than 32.
4. the security against fire according to claim 2 based on dynamic digital watermark checks picture method for anti-counterfeit, its feature exists
In in the step S1034, the algorithm of watermark insertion is as follows：
The discrete cosine transform of image is first calculated, then on the preceding k-factor of amplitude maximum, is into DCT domain by watermark superposition
The low frequency component of image；If the preceding k largest component of DCT coefficient is expressed as D={ di, i=1 ..., k, watermark are to obey Gauss
The random sequence of real numbers W={ w of distributioni, i=1 ..., k, then the embedded mobile GIS of watermark is
{di}={ di} (1+α{wi),
Wherein constant α is scale factor, and then the intensity of control watermark addition do inverse transformation with new coefficient and obtain watermark figure
Picture.
5. the security against fire according to claim 2 based on dynamic digital watermark checks picture method for anti-counterfeit, its feature exists
In in the step S203, during authentication image authenticity, manager extracts the digital watermarking of addition from image, with database
Information compares, and confirms the authenticity of image.
6. the security against fire based on dynamic digital watermark checks picture Antiforge system, it is characterised in that including digital watermark embedding
Module and digital watermark extracting module：
The digital watermark embedding module includes
Watermark information definition module：For obtaining when handheld sequence number, user's job number, photograph taking date, photograph taking
Between, perform task number；
Watermark figure synthesis module：In built-in system software, watermark information is pressed into handheld sequence number, user's job number, shone
Piece shooting date, photograph taking time, execution task number order, line up the five-element, generate picture, moved when needing every time from the top down
State is generated, and watermark recovery is different every time, as dynamic watermark；
Watermark encoder is embedded in module：Including image color space transform subblock：By the 24 euchroic coloured silks shot by handheld device
Image is temporarily stored into FLASH, and original image and watermarking images are converted to YIQ color spaces by system first；Image wavelet transform
Submodule：Y-component to original image YIQ planes carries out three-level wavelet decomposition；Resolution decomposition module：Watermarking images are carried out
Resolution decomposition；Embedded module：Wavelet coefficient after initial carrier image X is decomposed sorts after taking absolute value, according to embedded letter
The size of breath amount determines embedded threshold value k, and only absolute value is more than k wavelet coefficient embedding information, then judges that each coefficient is
It is no to be more than k, watermark is embedded in if k is more than, and record its position；Recover RGB image module：By the wavelet coefficient difference after adjustment
Carry out small echo inversion and obtain new luminance component Y ', then Y ' is combined with original I, Q component and RGB color is converted to,
Obtain containing watermarking images；
The digital watermarking extraction module includes
Watermark decodes extraction module：By original image and the conversion that RGB to YIQ is carried out containing watermarking images, then by Y-component three-level
Wavelet decomposition, the embedded location recorded during according to embedded watermark, extracts watermark information, according to three extraction of values, by bit plane point
Opposite sequence during solution recovers data, the negative sign preserved during according to embedded watermark and position, to adding negative sign before corresponding coefficient, then
DWT inverse transformations are carried out, watermark is recovered；
Watermark figure decomposing module：By obtained watermarking images, it is five figures according to certain pixel size level cutting, is respectively
Handheld sequence number, user's job number, photograph taking date, photograph taking time, execution task number figure；
Watermark information parsing module：Using OCR technique, the digital information in five figures, the authenticity of authentication image are recognized.
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| CN110569627B (en) * | 2019-08-01 | 2021-08-20 | 北京大米科技有限公司 | Image processing method and device and electronic equipment |
| CN112667976A (en) * | 2021-03-18 | 2021-04-16 | 深圳佳兆业科技集团有限公司 | Offline task processing method and device, computer equipment and storage medium |
| WO2024040474A1 (en) * | 2022-08-24 | 2024-02-29 | 京东方科技集团股份有限公司 | Encrypted image watermark processing method and apparatus, and display device |
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