CN109743641A - The method and system of monitor video superposition watermark - Google Patents
The method and system of monitor video superposition watermark Download PDFInfo
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- CN109743641A CN109743641A CN201910061210.4A CN201910061210A CN109743641A CN 109743641 A CN109743641 A CN 109743641A CN 201910061210 A CN201910061210 A CN 201910061210A CN 109743641 A CN109743641 A CN 109743641A
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Abstract
The present invention provides a kind of method and system of monitor video superposition watermark, method includes the following steps: S1, media server obtains watermark configuration information, and watermark configuration information is converted to structured data；S2, media server receive the PS video flowing that video source device is sent, and search PES head, watermark data are inserted into after PES, and give the PS video stream for inserting watermark data to decoding client；S3, decoding client receive the PS video flowing that media server is sent, and search PES head, extract the watermark data after PES, and parse watermark configuration information from watermark data；S4, decoding client are superimposed watermark after decoding video on video pictures.The present invention is compiled without a large amount of upgrading front-end cameras without complete solution is carried out to video entirely, can be achieved with being superimposed the video that video monitoring system exports customized watermark, easy to operate, safe and efficient, concealed anti-fake and do not influence video quality and code rate.
Description
Technical field
The present invention relates to field of video monitoring more particularly to a kind of method and system of monitor video superposition watermark.
Background technique
Video monitoring has attracted much attention in safety-security area, and technology development is maked rapid progress, and various regions project construction is like a raging fire.Especially
It is under the background of GB/T28181 publication, different geographical does not have to industry and carries out the big networking of video as required, realize resource-sharing,
User group's range and quantity constantly expand therewith, and video leakage event takes place frequently, and video information safety problems demand solves.
Video watermark is as a kind of information source tracing technology, although it cannot prevent video leakage and malicious dissemination event immediately
Generation, but may determine that whether video data is protected, monitor by the propagation of protection video data, discern the false from the genuine, solve
Leakage dispute simultaneously provides evidence for judicial department, therefore plays extremely important effect to video information safety.
Using traditional watermark adding technique, simplest method is that front-end camera directly adds watermark and encodes hair
Stream, but can not be bound in this way with user behavior, watermark content is not flexible, and needs a large amount of upgrading front-end cameras, therefore not
Has operability.
And the watermarking in coded video flowing, it is necessary to compressed video data be decoded as original video format, folded
Then watermarking picture recompiles to be pushed out and to some fixed area in video, therefore to realize that live video stream adds
Watermark just needs to use Video Transcoding Technology.It is complete that existing Video Transcoding Technology mostly uses FFmpeg and x264 to carry out video
The disadvantages of Xie Quan is compiled, and there are the gop structures of source stream video and code rate to be changed, video quality loss, computationally intensive transcoding, can not
Meet actual demand.
Summary of the invention
The purpose of the present invention is to provide a kind of method and system of monitor video superposition watermark, it is intended to existing for solving
The problem of watermark adding method is troublesome in poeration, watermark content is not flexible and video quality loss.
The present invention is implemented as follows:
On the one hand, the present invention provides a kind of method of monitor video superposition watermark, comprising the following steps:
S1, media server obtains watermark configuration information, and watermark configuration information is converted to structured data；
S2, media server receive the PS video flowing that video source device is sent, and search PES head, are inserted into water after PES
Printing evidence, and give the PS video stream for inserting watermark data to decoding client；
S3, decoding client receive the PS video flowing that media server is sent, and search PES head, extract after PES
Watermark data, and watermark configuration information is parsed from watermark data；
S4, decoding client are superimposed watermark after decoding video on video pictures.
Further, the step S1 is specifically included: watermark configuration information is arranged by NM client and is stored in water
It prints in configuration server, media server timing obtains watermark configuration information and converted from watermark configuration server.
Further, in the step S2, when being inserted into watermark data after PES, by PES_extension_flag
Whether mark position in the step S3, before extracting watermark data, judges PES_extension_flag flag bit at 1
It is 1, after being judged as 1, then extracts out the operation of watermark data.
Further, watermark is superimposed in the step S4 on video pictures to specifically include:
S4.1, newly-built transparent background window are simultaneously hidden, and the size and location coordinate and video playback window of window keep one
It causes；
Watermark is attached in transparent background window by S4.2 by the watermark configuration information parsed；
S4.3, video pictures show above-mentioned transparent background window while broadcasting.
Further, the above method further include:
S4.4, video pictures stop hiding above-mentioned transparent background window when playing.
On the other hand, the present invention also provides a kind of systems of monitor video superposition watermark, including video source device, media clothes
Business device and decoding client；
The media server includes:
Watermark configuration information obtains module, is converted to structure for obtaining watermark configuration information, and by watermark configuration information
Volume data；
Watermark data is inserted into module, and the PS video flowing sent for receiving video source device searches PES head, in PES head
After be inserted into watermark data, and give the PS video stream for inserting watermark data to decoding client；
The decoding client includes:
Watermark configuration information extraction module, the PS video flowing sent for receiving media server search PES head, extract
Watermark data after PES out, and watermark configuration information is parsed from watermark data；
Watermark superposition module, for being superimposed watermark on video pictures after decoding video.
It further, further include NM client and watermark configuration server；
The NM client is for being arranged watermark configuration information and being transmitted to watermark configuration server；
The watermark configuration server is for storing watermark configuration information.
Further, the watermark data insertion module is also used to when being inserted into watermark data after PES, by PES_
The mark position extension_flag is at 1；
The watermark configuration information extraction module is also used to before extracting watermark data, judges PES_extension_
Whether flag flag bit is 1, after being judged as 1, then extracts out the operation of watermark data.
Further, the watermark superposition module is specifically used for:
Newly-built transparent background window is simultaneously hidden, and size and location coordinate and the video playback window of window are consistent；
Watermark is attached in transparent background window by the watermark configuration information parsed；
Video pictures show above-mentioned transparent background window while broadcasting.
Further, the watermark superposition module is also used to:
Video pictures stop hiding above-mentioned transparent background window when playing.
Compared with prior art, the invention has the following advantages:
The method and system of this monitor video superposition watermark provided by the invention, upgrade front-end cameras without a large amount of,
It is compiled entirely without complete solution is carried out to video, can be achieved with being superimposed customized watermark to the video that video monitoring system exports,
It is easy to operate, safe and efficient, concealed anti-fake and do not influence video quality and code rate.
Detailed description of the invention
Fig. 1 is the flow chart for the method that a kind of monitor video provided in an embodiment of the present invention is superimposed watermark；
Fig. 2 is the structural block diagram for the system that a kind of monitor video provided in an embodiment of the present invention is superimposed watermark.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of method of monitor video superposition watermark, comprising the following steps:
S1, media server obtains watermark configuration information, and watermark configuration information is converted to structured data.
In the present embodiment, the watermark configuration information is that formats, the watermark configuration informations such as XML or JSON include watermark text
Or image data, and the relative position coordinates in video pictures.Preferably, the step S1 is specifically included: being passed through
NM client setting watermark configuration information is simultaneously stored in watermark configuration server, and media server passes through Web Service
Interface timing obtains watermark configuration information and is converted from watermark configuration server.Due to can be by NM client to watermark
Configuration information is configured, and therefore, watermark content is flexible, the watermark information of the settable customization of user, and applicability is wide.
S2, media server receive the PS video flowing that video source device is sent, and search PES head, are inserted into water after PES
Printing evidence, and give the PS video stream for inserting watermark data to decoding client.
In the present embodiment, media server is responsible for the PS video flowing that reception video source device is sent and is transmitted to decoding client
End, media server and decoding client belong to a part of video monitoring platform, and video source device can be to be directly accessed
The national standard video camera of the video monitoring platform, or mutual by national standard (GB/T28181-2016) with the video monitoring platform
Junior's monitor supervision platform of connection.It can also include a signal server, video source device, media server and decoding client
Between using signal server as medium, mutually controlled by SIP signaling.Media server is during forwarding video flowing
Watermark data is added in video streaming, is specially inserted into watermark data after the PES head of PS video flowing, it is preferable that in PES head
When being inserted into watermark data later, also by the mark position PES_extension_flag at 1, to be marked, facilitate decoding visitor
Family end parses watermark configuration information.
S3, decoding client receive the PS video flowing that media server is sent, and search PES head, extract after PES
Watermark data, and watermark configuration information is parsed from watermark data.
In the present embodiment, the decoding that decoding client is mainly responsible for video plays and shows in video pictures watermark effect
Fruit extracts watermark data and parses watermark text or picture number from the watermark data of structural body when receiving PS video flowing
According to, and the watermarks configuration information such as relative position coordinates in video pictures.Based on above-mentioned steps S3, decodes client and mentioning
Before taking watermark data, also judges whether PES_extension_flag flag bit is 1, after being judged as 1, then extract water outlet
The operation of printing evidence, prevents maloperation, reduces the probability of error.
S4, decoding client are superimposed watermark after decoding video on video pictures.
In the present embodiment, decoding client plays after decoding original video, is existed according to the watermark configuration information parsed
Video pictures designated position is superimposed watermark text or picture, specifically includes:
S4.1, newly-built transparent background window are simultaneously hidden, and the size and location coordinate and video playback window of window keep one
It causes；
Watermark is attached in transparent background window by S4.2 by the watermark configuration information parsed；
S4.3, video pictures show above-mentioned transparent background window while broadcasting.
It may be implemented during video playing by watermark superposition into video pictures, realize anti-fake by the above method
With mark etc. functions.
Preferably, the above method further include:
S4.4, video pictures stop hiding above-mentioned transparent background window when playing.
To hide watermark information when video pictures stop playing to observe video pictures, watermark letter is placed
The interference to video pictures is ceased, observation is facilitated.
The method of this monitor video superposition watermark provided in an embodiment of the present invention, upgrades front-end cameras without a large amount of,
It is compiled entirely without complete solution is carried out to video, can be achieved with being superimposed customized watermark to the video that video monitoring system exports,
It is easy to operate, safe and efficient, concealed anti-fake and do not influence video quality and code rate.
Based on the same inventive concept, the embodiment of the present invention also provides a kind of system of monitor video superposition watermark, due to this
The principle that system solves technical problem is similar with above method embodiment, therefore the implementation of the system is referred to the reality of the above method
It applies, overlaps will not be repeated.
As shown in Fig. 2, for a kind of system that monitor video is superimposed watermark provided in an embodiment of the present invention, for realizing above-mentioned
The method of embodiment, the system include video source device 1, media server 2 and decoding client 3；
The media server 2 includes:
Watermark configuration information obtains module 21, is converted to knot for obtaining watermark configuration information, and by watermark configuration information
Structure volume data；
Watermark data is inserted into module 22, and the PS video flowing sent for receiving video source device searches PES head, in PES head
It is inserted into watermark data later, and gives the PS video stream for inserting watermark data to decoding client；
The decoding client 3 includes:
Watermark configuration information extraction module 31, the PS video flowing sent for receiving media server are searched PES head, are mentioned
The watermark data after PES is taken out, and parses watermark configuration information from watermark data；
Watermark superposition module 32, for being superimposed watermark on video pictures after decoding video.
In one embodiment, which further includes NM client 5 and watermark configuration server 4；
The NM client 5 is for being arranged watermark configuration information and being transmitted to watermark configuration server 4；
The watermark configuration server 4 is for storing watermark configuration information.
In one embodiment, the watermark data insertion module 22 is also used to when being inserted into watermark data after PES,
By the mark position PES_extension_flag at 1；
The watermark configuration information extraction module 31 is also used to before extracting watermark data, judges PES_extension_
Whether flag flag bit is 1, after being judged as 1, then extracts out the operation of watermark data.
In one embodiment, the watermark superposition module 32 is specifically used for:
Newly-built transparent background window is simultaneously hidden, and size and location coordinate and the video playback window of window are consistent；
Watermark is attached in transparent background window by the watermark configuration information parsed；
Video pictures show above-mentioned transparent background window while broadcasting.
In one embodiment, the watermark superposition module 32 is also used to:
Video pictures stop hiding above-mentioned transparent background window when playing.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of embodiment is can to lead to
Program is crossed to instruct relevant hardware and complete, which can be stored in a computer readable storage medium, storage medium
It may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access
Memory), disk or CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method of monitor video superposition watermark, which comprises the following steps:
S1, media server obtains watermark configuration information, and watermark configuration information is converted to structured data；
S2, media server receive the PS video flowing that video source device is sent, and search PES head, and watermark number is inserted into after PES
According to, and give the PS video stream for inserting watermark data to decoding client；
S3, decoding client receive the PS video flowing that media server is sent, and search PES head, extract the watermark after PES
Data, and watermark configuration information is parsed from watermark data；
S4, decoding client are superimposed watermark after decoding video on video pictures.
2. the method for monitor video superposition watermark as described in claim 1, which is characterized in that the step S1 is specifically included:
Watermark configuration information is set by NM client and is stored in watermark configuration server, media server timing is matched from watermark
It sets and obtains watermark configuration information in server and convert.
3. the method for monitor video superposition watermark as described in claim 1, it is characterised in that: in the step S2, in PES head
When being inserted into watermark data later, by the mark position PES_extension_flag at 1, in the step S3, watermark number is being extracted
According to before, judging whether PES_extension_flag flag bit is 1, after being judged as 1, then the behaviour of watermark data is extracted out
Make.
4. the method for monitor video superposition watermark as described in claim 1, which is characterized in that drawn in the step S4 in video
Watermark is superimposed on face to specifically include:
S4.1, newly-built transparent background window are simultaneously hidden, and size and location coordinate and the video playback window of window are consistent；
Watermark is attached in transparent background window by S4.2 by the watermark configuration information parsed；
S4.3, video pictures show above-mentioned transparent background window while broadcasting.
5. the method for monitor video superposition watermark as claimed in claim 4, which is characterized in that the above method further include:
S4.4, video pictures stop hiding above-mentioned transparent background window when playing.
6. a kind of system of monitor video superposition watermark, it is characterised in that: including video source device, media server and decoding
Client；
The media server includes:
Watermark configuration information obtains module, is converted to structural body number for obtaining watermark configuration information, and by watermark configuration information
According to；
Watermark data is inserted into module, and the PS video flowing sent for receiving video source device searches PES head, inserts after PES
Enter watermark data, and gives the PS video stream for inserting watermark data to decoding client；
The decoding client includes:
Watermark configuration information extraction module, the PS video flowing sent for receiving media server search PES head, extract PES
Watermark data after head, and watermark configuration information is parsed from watermark data；
Watermark superposition module, for being superimposed watermark on video pictures after decoding video.
7. the system of monitor video as claimed in claim 6 superposition watermark, it is characterised in that: further include NM client and
Watermark configuration server；
The NM client is for being arranged watermark configuration information and being transmitted to watermark configuration server；
The watermark configuration server is for storing watermark configuration information.
8. the system of monitor video superposition watermark as claimed in claim 6, it is characterised in that:
The watermark data insertion module is also used to when being inserted into watermark data after PES, by PES_extension_flag
Mark position is at 1；
The watermark configuration information extraction module is also used to before extracting watermark data, judges that PES_extension_flag is marked
Whether will position is 1, after being judged as 1, then extracts out the operation of watermark data.
9. the system of monitor video superposition watermark as claimed in claim 6, which is characterized in that the watermark superposition module is specific
For:
Newly-built transparent background window is simultaneously hidden, and size and location coordinate and the video playback window of window are consistent；
Watermark is attached in transparent background window by the watermark configuration information parsed；
Video pictures show above-mentioned transparent background window while broadcasting.
10. the system of monitor video superposition watermark as claimed in claim 9, which is characterized in that the watermark superposition module is also
For:
Video pictures stop hiding above-mentioned transparent background window when playing.
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