CN110213656A - A kind of IPTV content tampering kind identification method and system based on the comparison of picture portion domain - Google Patents
A kind of IPTV content tampering kind identification method and system based on the comparison of picture portion domain Download PDFInfo
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- CN110213656A CN110213656A CN201910521919.8A CN201910521919A CN110213656A CN 110213656 A CN110213656 A CN 110213656A CN 201910521919 A CN201910521919 A CN 201910521919A CN 110213656 A CN110213656 A CN 110213656A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4425—Monitoring of client processing errors or hardware failure
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- Engineering & Computer Science (AREA)
- Databases & Information Systems (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Television Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of IPTV content tampering kind identification methods and system based on the comparison of picture portion domain, belong to IPTV monitoring technical field.IPTV content tampering kind identification method based on the comparison of picture portion domain of the invention, comprising the following steps: S1, make to take out frame processing for the program of integrated broadcasting centre, generate image；S2, the program of IPTV user is made to take out frame processing, generates image；S3, the image of step S1 is divided into region, calculates reference zone characteristic value using mean value hash algorithm subregion；S4, the picture portion domain by step S2 use mean value hash algorithm subregion zoning characteristic value.The IPTV content tampering kind identification method based on the comparison of picture portion domain of the invention is to the program for having been determined as content tampering, it is compared based on picture portion domain, can intelligent recognition its content tampering type, logo is distorted, subtitle is distorted, and has good application value.
Description
Technical field
The present invention relates to IPTV monitoring technical fields, specifically provide it is a kind of based on picture portion domain comparison IPTV content usurp
Change kind identification method and system.
Background technique
Video data itself is made of picture one by one, and tool (such as ffmepg) can be used to extract these pictures
Out, this process is called pumping frame.
The programming source of IPTV operator (hereinafter referred to as: operator) is in integrated Broadcast Control platform.Operator distorts sometimes
Program data, such as modification logo, addition subtitle, addition advertising segment etc., eventually lead to the program that IPTV terminal user sees
It is inconsistent with original program.TV programme logo is normally at top left region, and program credits are located at lower area.Therefore can pass through
It is inconsistent to compare any block region in video, to infer the type of content tampering.There is special related software monitoring is such to usurp to this
Change.
But common inspection software can only find, report and distort problem in violation of rules and regulations, be related to violation type and then need manually to examine
It reads.
Summary of the invention
Technical assignment of the invention is in view of the above problems, to provide a kind of for the section for having been determined as content tampering
Mesh is compared based on picture portion domain, can intelligent recognition its content tampering type, logo is distorted, subtitle is distorted based on image
The IPTV content tampering kind identification method of subregion comparison.
The further technical assignment of the present invention is to provide a kind of IPTV content tampering type based on the comparison of picture portion domain
Identifying system.
To achieve the above object, the present invention provides the following technical scheme that
A kind of IPTV content tampering kind identification method based on the comparison of picture portion domain, method includes the following steps:
S1, the program of integrated broadcasting centre is made to take out frame processing, generates image；
S2, the program of IPTV user is made to take out frame processing, generates image；
S3, the image of step S1 is divided into region, calculates reference zone characteristic value using mean value hash algorithm subregion；
S4, the picture portion domain by step S2 use mean value hash algorithm subregion zoning characteristic value；
The regional characteristic value in reference zone characteristic value and step S4 in S5, comparison step S3 determines that specified region is
No matching is consistent；
If S6, logo region are inconsistent, distort for logo, if caption area is inconsistent, is distorted for subtitle.
The program data of IPTV operator derives from integrated broadcasting centre, and the program data of IPTV operator is sent to IPTV
User therefore can be using the program of integrated broadcasting centre as reference data, by the program of IPTV user with comparing.
Preferably, the IPTV content tampering kind identification method that should be compared based on picture portion domain further includes walking as follows
It is rapid:
S7, the image whole region of step S2 and blank screen characteristic value are compared, if multiple continuous images match, for blank screen
Failure.
Preferably, the IPTV content tampering kind identification method that should be compared based on picture portion domain further includes walking as follows
It is rapid:
S8, by the image adjacent contrast of continuous multiple step S2, if continuous coupling, for still frame failure.
Preferably, integrated broadcasting centre of the programming source of IPTV user in step S1 in the step S2.
Preferably, the image that step S1, step S2 are obtained, carries out compression processing to picture, and carry out gray proces.
Since the image pixel for taking out frame is higher, to reduce calculation amount when image comparison, can first compressed picture, and do image
Gray proces.
A kind of IPTV content tampering identification system based on the comparison of picture portion domain, the system comprise the following modules:
Image generation module: for being used as the program of integrated broadcasting centre to take out frame processing generation image and be used for IPTV
The program at family is made to take out frame processing generation image；
Regional characteristic value computing module: reference zone characteristic value is calculated for subregion and for subregion zoning spy
Value indicative；
Distort type judging module: for being distorted to be determined as logo according to reference zone characteristic value and regional characteristic value
Or subtitle is distorted.
In image generation module, the program of integrated broadcasting centre is made to take out frame processing, generates image；By the section of IPTV user
Mesh is made to take out frame processing, generates image.Since the image pixel for taking out frame is higher, to reduce calculation amount when image comparison, can first press
Contract drawing piece, and do image grayscale processing.
In regional characteristic value computing module, the program of integrated broadcasting centre is made to the image dividing regions for taking out frame processing generation
Domain, subregion calculate reference zone characteristic value；The program of IPTV user is made into the picture portion domain that pumping frame processing generates, subregion
Zoning characteristic value.
Distort in type judging module, compare reference zone characteristic value and regional characteristic value, determine specified region whether
With consistent；If logo region is inconsistent, distort for logo, if caption area is inconsistent, is distorted for subtitle.
Preferably, the IPTV content tampering identification system that should be compared based on picture portion domain further includes with lower die
Block:
Fault type judgment module: the image conditions that obtain for the program according to IPTV user are judged as black screen trouble
Or still frame failure.
IPTV user's program video whole region and blank screen characteristic value are compared, if multiple continuous images match, are black
Shield failure.
By the image adjacent contrast of continuous multiple IPTV user's programs, if continuous coupling, for still frame failure.
It generates image preferably, image generation module is used to make the program of integrated broadcasting centre to take out frame processing and is used for
The program of IPTV user is made after taking out frame processing generation image, compression processing is carried out to picture, and carry out gray proces.
Compared with prior art, the IPTV content tampering kind identification method tool of the invention based on the comparison of picture portion domain
Have following prominent the utility model has the advantages that the IPTV content tampering kind identification method based on the comparison of picture portion domain can be directed to
Have been determined as the program of content tampering, compared based on picture portion domain, can the type of intelligent recognition its content tampering usurped for logo
Change or subtitle is distorted, may recognize that failure is black screen trouble or still frame failure, do not need manual reviews' violation type, have
There is good application value.
Detailed description of the invention
Fig. 1 is the flow chart of the IPTV content tampering kind identification method of the present invention based on the comparison of picture portion domain.
Specific embodiment
Below in conjunction with drawings and examples, to the IPTV content tampering type of the invention based on the comparison of picture portion domain
Recognition methods and system are described in further detail.
Embodiment
As shown in Figure 1, the IPTV content tampering kind identification method of the invention based on the comparison of picture portion domain, specific to wrap
Include following steps:
S1, the program of integrated broadcasting centre is made to take out frame processing, generates image.
S2, the program of IPTV user is made to take out frame processing, generates image.
Integrated broadcasting centre of the programming source of the IPTV user of the step in step S1.
The program data of IPTV operator derives from integrated broadcasting centre, and the program data of IPTV operator is sent to IPTV
User therefore can be using the program of integrated broadcasting centre as reference data, by the program of IPTV user with comparing.
Since the image pixel for taking out frame is higher, to reduce calculation amount when image comparison, can first compressed picture, and do image
Gray proces.
S3, the image of step S1 is divided into region, calculates reference zone characteristic value using mean value hash algorithm subregion.
S4, the picture portion domain by step S2 use mean value hash algorithm subregion zoning characteristic value.
The regional characteristic value in reference zone characteristic value and step S4 in S5, comparison step S3 determines that specified region is
No matching is consistent.
If S6, logo region are inconsistent, distort for logo, if caption area is inconsistent, is distorted for subtitle.
S7, the image whole region of step S2 and blank screen characteristic value are compared, if multiple continuous images match, for blank screen
Failure.
S8, by the image adjacent contrast of continuous multiple step S2, if continuous coupling, for still frame failure.
Specific implementation process is as follows:
1) integrated broadcasting centre, IPTV terminal program are taken out into frame processing, generates image.
2) by compression of images to specified pixel (tentative 128*128), gray proces then are made to image.
3) gray level image of 128*128 is divided into different regions, such as lower area (128*20), central area (50*
50), top left region (30*30), whole region (128*128) etc. calculate characteristic value using mean value hash algorithm.
4) integrated Broadcast Control platform image and IPTV terminal image area characteristics value are compared using Hamming distance, distance is more than threshold
Value (fix tentatively is 4) then thinks that the region is inconsistent.
5) determine content tampering type according to regional correlation situation: upper left, right regions are inconsistent, then it is assumed that logo is different
It causes；Lower part is inconsistent, then it is assumed that is that subtitle is distorted.
A1 mean value hash:
10101010101010010010010101001010101100101010101001010101010100101000
101010101001010101010
A2 mean value hash:
01010011010010101010100101001010101011001010101010101010101010010101
010101010101010010101
A1, A2 Hamming distance are more than threshold value, it is believed that the region A1, A2 is inconsistent, is determined as that logo is inconsistent according to rule.
6) comparison IPTV terminal image whole region and regional characteristic value when blank screen, if multiple continuous images match are black
Shield characteristic value, then it is assumed that black screen trouble.
7) the whole region characteristic value of multiple continuous images of comparison IPTV terminal, if continuous multiple frames Self Matching, then it is assumed that
It is still frame failure.
IPTV content tampering identification system based on the comparison of picture portion domain of the invention, which includes with lower die
Block:
Image generation module: for being used as the program of integrated broadcasting centre to take out frame processing generation image and be used for IPTV
The program at family is made to take out frame processing generation image.
The program of integrated broadcasting centre is made to take out frame processing, generates image；The program of IPTV user is made to take out frame processing, it is raw
At image.Since the image pixel for taking out frame is higher, to reduce calculation amount when image comparison, can first compressed picture, and do image
Gray proces.
Regional characteristic value computing module: reference zone characteristic value is calculated for subregion and for subregion zoning spy
Value indicative.
The image that the program of integrated broadcasting centre makees to take out frame processing generation is divided into region, it is special that subregion calculates reference zone
Value indicative；The program of IPTV user is made into the picture portion domain that pumping frame processing generates, subregion zoning characteristic value.
Distort type judging module: for being distorted to be determined as logo according to reference zone characteristic value and regional characteristic value
Or subtitle is distorted.Reference zone characteristic value and regional characteristic value are compared, determines whether specified region matches unanimously；If logo region
It is inconsistent, then it distorts for logo, if caption area is inconsistent, is distorted for subtitle.
Fault type judgment module: the image conditions that obtain for the program according to IPTV user are judged as black screen trouble
Or still frame failure.IPTV user's program video whole region and blank screen characteristic value are compared, if multiple continuous images match, for
Black screen trouble.
By the image adjacent contrast of continuous multiple IPTV user's programs, if continuous coupling, for still frame failure.
Embodiment described above, the only present invention more preferably specific embodiment, those skilled in the art is at this
The usual variations and alternatives carried out within the scope of inventive technique scheme should be all included within the scope of the present invention.
Claims (8)
1. a kind of IPTV content tampering kind identification method based on the comparison of picture portion domain, it is characterised in that: this method includes
Following steps:
S1, the program of integrated broadcasting centre is made to take out frame processing, generates image；
S2, the program of IPTV user is made to take out frame processing, generates image；
S3, the image of step S1 is divided into region, calculates reference zone characteristic value using mean value hash algorithm subregion；
S4, the picture portion domain by step S2 use mean value hash algorithm subregion zoning characteristic value；
The regional characteristic value in reference zone characteristic value and step S4 in S5, comparison step S3, determine specified region whether
With consistent；
If S6, logo region are inconsistent, distort for logo, if caption area is inconsistent, is distorted for subtitle.
2. the IPTV content tampering kind identification method according to claim 1 based on the comparison of picture portion domain, feature
It is: further includes following steps:
S7, the image whole region of step S2 and blank screen characteristic value are compared, if multiple continuous images match, for blank screen event
Barrier.
3. the IPTV content tampering kind identification method according to claim 2 based on the comparison of picture portion domain, feature
It is: further includes following steps:
S8, by the image adjacent contrast of continuous multiple step S2, if continuous coupling, for still frame failure.
4. the IPTV content tampering kind identification method according to claim 1,2 or 3 based on the comparison of picture portion domain,
It is characterized in that: integrated broadcasting centre of the programming source of IPTV user in step S1 in step S2.
5. the IPTV content tampering kind identification method according to claim 4 based on the comparison of picture portion domain, feature
Be: the step S1, image that step S2 is obtained carries out compression processing to picture, and carries out gray proces.
6. a kind of IPTV content tampering identification system based on the comparison of picture portion domain, it is characterised in that: including with lower die
Block:
Image generation module: it frame processing generation image and is used for IPTV user's for the program of integrated broadcasting centre work to be smoked
Program is made to take out frame processing generation image；
Regional characteristic value computing module: reference zone characteristic value is calculated for subregion and is used for subregion zoning feature
Value；
It distorts type judging module: for according to reference zone characteristic value and regional characteristic value, being distorted or word to be determined as logo
Curtain is distorted.
7. the IPTV content tampering identification system according to claim 6 based on the comparison of picture portion domain, feature
It is: further includes with lower module:
Fault type judgment module: the image conditions obtained for the program according to IPTV user are judged as black screen trouble or quiet
Frame failure.
8. the IPTV content tampering identification system according to claim 6 or 7 based on the comparison of picture portion domain, special
Sign is: image generation module is used to make the program of integrated broadcasting centre to take out frame processing and generates image and be used for IPTV user
Program make to take out after frame processing generates image, compression processing is carried out to picture, and carries out gray proces.
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Application publication date: 20190906 |