CN101977305A - Video processing method, device and system - Google Patents
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Abstract
The invention discloses a video processing method, which is used for transmitting multi-channel video content. The method comprises the following steps: acquiring multi-channel video data to be synthesized; judging whether the resolution of the video data of each channel to be synthesized exceeds a resolution threshold; if so, adjusting the resolution to be equal to or lower than the resolution threshold; and merging the multi-channel video data to be synthesized into one-channel video data. The invention also discloses a device and a system for realizing the method.
Description
Technical field
The present invention relates to communication, embedded and image field, particularly relate to method for processing video frequency and device and system.
Background technology
Remote monitoring is the most potential current frequency image monitoring system.The function that remote image monitoring system is realized, the one, the image of Remote Camera is sent to Surveillance center, the 2nd, can send such as rotary head, change control commands such as presetting bit, camera lens become doubly to the video camera of far-end from Surveillance center.The implementation of remote image monitoring system also has two big classes, and the one, come transmitted image and order by the public telecommunication circuit, another kind of is by computer network multinode transmitted image and order.Except that wire transmission, also comprise the wireless remote image delivery system.
For transprovincially, the digital supervision of wide area network such as trans-city, under the restriction of bandwidth,, can only transmit the multichannel low bit-rate video at present if wish to carry out multi-faceted monitoring.If wish the transmission HD video, then at present can only the transmission of one line HD video, also just can only monitor the zone of a camera shooting.Therefore, prior art can't realize the multiplexing of HD video.
Summary of the invention
The embodiment of the invention provides a kind of method for processing video frequency and device and system, is used to realize the transmission of multi-channel video content.
A kind of method for processing video frequency may further comprise the steps:
Obtain multi-path video data to be synthesized;
At each road video data to be synthesized, judge that whether resolution surpasses the resolution threshold value, is equal to or less than described resolution threshold value if then resolution is adjusted into;
The video data that multichannel is to be synthesized is merged into one road video data.
A kind of video process apparatus comprises:
First interface module is used to obtain multi-path video data to be synthesized;
Detection module is used at each road video data to be synthesized, judges that whether resolution surpasses the resolution threshold value, is equal to or less than described resolution threshold value if then resolution is adjusted into;
Synthesis module is used for the video data that multichannel is to be synthesized and merges into one road video data.
A kind of processing system for video comprises:
The video synthesizer, be used to obtain multi-path video data to be synthesized, at each road video data to be synthesized, judge whether resolution surpasses the resolution threshold value, if then resolution is adjusted into and is equal to or less than described resolution threshold value, and the video data that multichannel is to be synthesized is merged into one road video data;
Network processing device is used for road video Data Transmission after merging to network.
The embodiment of the invention by controlling video data to be synthesized resolution and multi-path video data merged into one road video data, realize code stream transmitting multi-path video data with one road video data, be equivalent to reduce the shared code check of multi-path video data, therefore can have transmitted the multi-path high-definition video data.
Description of drawings
Fig. 1 is the main method flow chart of Video processing in the embodiment of the invention;
Fig. 2 is the method flow diagram of Video processing when passing through image connecting method merging video data in the embodiment of the invention;
The method flow diagram of Fig. 3 Video processing when merging video data by the image overlay mode in the embodiment of the invention;
Fig. 4 is the schematic diagram of position relation in the embodiment of the invention;
Fig. 5 is the primary structure figure of video process apparatus in the embodiment of the invention;
Fig. 6 is the detailed structure view of video process apparatus in the embodiment of the invention;
Fig. 7 is the primary structure figure of processing system for video in the embodiment of the invention;
Fig. 8 is the detailed structure view of processing system for video in the embodiment of the invention.
Embodiment
The embodiment of the invention by controlling video data to be synthesized resolution and multi-path video data merged into one road video data, realize code stream transmitting multi-path video data with one road video data, be equivalent to reduce the shared code check of multi-path video data, therefore can have transmitted the multi-path high-definition video data.
Referring to Fig. 1, the main method flow process of Video processing is as follows in the present embodiment:
Step 101: obtain multi-path video data to be synthesized.
Step 102:, judge that whether resolution surpasses the resolution threshold value, is equal to or less than described resolution threshold value if then resolution is adjusted at each road video data to be synthesized.If do not surpass the resolution threshold value, then this video data to be synthesized carry out step 103.
Step 103: the video data that multichannel is to be synthesized is merged into one road video data.
Preferable, video data to be synthesized in the present embodiment is taken the video data that obtains from camera head, and this video Data Transmission is to monitoring side so that monitor.Resolution threshold value and video data to be synthesized etc. all can be controlled by the monitoring side, and concrete synthesis mode is not unique yet, introduces in detail below by two embodiment.
Referring to Fig. 2, the method flow of Video processing is as follows when passing through image connecting method merging video data in the present embodiment:
Step 201: the control signaling that receives the way of the resolution carry the monitoring side and video data to be synthesized.When the resolution of monitoring side and way change, send this control signaling and get final product, all do not carry out when this step does not need each video synthetic.
Step 202: the control signaling that receives the sign that carries video channel.When the sign of video channel changes, send this control signaling and get final product, all do not carry out when this step does not need each video synthetic.In addition, control command in this step and the control command in the step 201 can be same control commands.
More than control command in two steps send by the client of monitoring side, visual actual monitored need be determined.
Step 203: determine the resolution threshold value according to the resolution of monitoring side and the way of video data to be synthesized.
Step 204: the sign by the control signaling video channel of carrying obtains the video data to be synthesized on the video channel of this sign correspondence.For example, the integer that is designated 0-7 of video channel, totally 8 video channels are controlled signaling and have been carried 0,4,5 and 7, then receive the video data on 0,4,5 and 7 video channels, the video data of other video channel of maskable.
Step 205: whether the resolution of judging video data to be synthesized is no more than the resolution threshold value, if surpass the resolution threshold value, then continues step 206, otherwise continues step 207.
Step 206: adjust the resolution of video data to be synthesized, make it be no more than the resolution threshold value.Continue step 207.
Step 207:,, will merge into one road video data through the multichannel video data to be synthesized after the judgement according to the position relation of the sign of default video channel by the image connecting method.The image splicing is meant there is not lap between the image.For example, the position of the sign of video channel is closed and is
Be unit with the frame then, 4 two field pictures are spliced into a two field picture according to this position relation.Described position relation can be determined according to the actual positional relationship of the scene of 4 road video correspondences, so that the monitoring side clearly obtains complete picture.If do not concern to come stitching image according to the position, also can obtain the image of the actual scene of 4 road video correspondences, but on visual effect, can make us feeling under the weather, easily monitoring scene is caused erroneous judgement.
Referring to Fig. 3, the method flow of Video processing is as follows when merging video data by the image overlay mode in the present embodiment:
Step 301: receive the image that carries video data to be synthesized and desire to account for the ratio of monitoring side image size and the control signaling of the resolution of monitoring side.Video data to be synthesized has multichannel, and the size of every road video data in monitoring side image may be different, therefore control the ratio that signaling comprises every road video data correspondence.
Step 302: the control signaling that receives the sign that carries video channel.
Step 303: determine the resolution threshold value by the product that the image of video data to be synthesized is desired to account for the ratio of monitoring side image size and monitor the resolution of side.
Step 304: the sign by the control signaling video channel of carrying obtains the video data to be synthesized on the video channel of this sign correspondence.
Step 305: whether the resolution of judging video data to be synthesized is no more than the resolution threshold value, if surpass the resolution threshold value, then continues step 306, otherwise continues step 307.
Step 306: adjust the resolution of video data to be synthesized, make it be no more than the resolution threshold value.Continue step 307.
Step 307:,, will merge into one road video data through the multichannel video data to be synthesized after the judgement according to the position relation of the sign of default video channel by the image overlay mode.Image overlay is meant and has lap between the image, can adopt to cover or mode such as transparent is handled.For example, the position of the sign of video channel concerns as shown in Figure 4, is unit according to this position relation with the frame then, with the synthetic two field picture of 4 two field pictures.
Understood the synthetic implementation procedure of video by above description, this process mainly realizes that by video process apparatus internal structure and the function to this device is introduced below.
Referring to Fig. 5, video process apparatus comprises in the present embodiment: first interface module 501, detection module 502 and synthesis module 503.
Video process apparatus also comprises: second interface module 504 is used for receiving the control signaling, referring to shown in Figure 6.The sign of first interface module 501 by the control signaling video channel of carrying obtains the video data to be synthesized on the video channel of this sign correspondence.Concrete, second interface module 504 is used for receiving the control signaling, and obtains the resolution threshold value by the control signaling; Perhaps, receive the control signaling, and obtain the resolution of monitoring side and the way of video data to be synthesized, and then obtain the resolution threshold value by the control signaling; Perhaps, receive the control signaling, and desire to account for the ratio of monitoring side image size and the resolution of monitoring side, and then obtain the resolution threshold value by the image of control signaling acquisition video data to be synthesized.
Video process apparatus can also merge synthetic multi-path video data under the control of control signaling once more, further reduces the code check that takies.For example, when merging for the first time, 4 road video datas are merged into one road video data, when merging for the second time, again 4 tunnel synthetic video datas are merged, thereby realize 16 road video datas are merged into one the tunnel.
Video process apparatus can be realized by existing synthesis chip is improved the back, makes the function in the existing synthesis chip support present embodiment.
For the ease of the long-distance transmissions of video data, road video Data Transmission after then wishing to merge is to network.And existing synthesis chip is supported the video data of YUV (light tone degree) form, but therefore the video data that camera head photographs RGB (RGB) form normally needs format conversion.More than two kinds of demands all need device and realize, below the processing system for video that comprises said apparatus is introduced.
Referring to Fig. 7, processing system for video comprises in the present embodiment: video synthesizer 701 and network processing device 702.
Processing system for video also comprises: video interface device 703 and decoding device 704, and referring to shown in Figure 8.
Decoding device 704 is used for the rgb video data are converted to the yuv video data, and the yuv video data are outputed to the video synthesizer.Preferable, decoding device 704 is converted to video data the yuv video data of 4:2:2.
If video synthesizer 701 is supported the rgb video data, perhaps camera head can obtain the yuv video data, then can omit video interface device 703 and decoding device 704.
In order to realize parallel processing, improve the treatment effeciency of video conversion in the present embodiment, can on a video channel video interface device 703 and decoding device 704 be arranged, then video synthesizer 701 is connected with a plurality of decoding devices 704.
Processing system for video also comprises: code device 705 is used for road video data after merging is converted to the video data of network format, and gives network processing device with the video Data Transmission of network format.The video format that relatively is suitable at present Network Transmission is the video format of (a kind of video standard) standard definition H.264, network format in the present embodiment mainly refers to the H.264 video format of standard definition, if there is other video format also to be applicable to Network Transmission, then also belong to network format alleged in the present embodiment.Code device 705 also is used for the control signaling that network processing device 702 sends is transmitted to video synthesizer 701.
The embodiment of the invention by controlling video data to be synthesized resolution and multi-path video data merged into one road video data, realize code stream transmitting multi-path video data with one road video data, be equivalent to reduce the shared code check of multi-path video data, therefore can have transmitted the multi-path high-definition video data.The embodiment of the invention also realizes the Long-distance Control of the process that is combined by the control signaling, and the video data after will merging carries out remote transmission by network.And, can realize the repeatedly merging of video data, the code check that takies in the time of can reducing video transmission significantly by the mode of control resolution.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. a method for processing video frequency is characterized in that, may further comprise the steps:
Obtain multi-path video data to be synthesized;
At each road video data to be synthesized, judge that whether resolution surpasses the resolution threshold value, is equal to or less than described resolution threshold value if then resolution is adjusted into;
The video data that multichannel is to be synthesized is merged into one road video data.
2. the method for claim 1 is characterized in that:
Before the described acquisition multi-path video data to be synthesized, also comprise step: receive the control signaling; And
The step of the video data that described acquisition is to be synthesized comprises: the sign by the control signaling video channel of carrying obtains the video data to be synthesized on the video channel of this sign correspondence.
3. method as claimed in claim 2, it is characterized in that, the step that the video data that multichannel is to be synthesized is merged into one road video data comprises: according to the position relation of the sign of default video channel, the video data that multichannel is to be synthesized is merged into one road video data.
4. as claim 1 or 2 or 3 described methods, it is characterized in that the step that the video data that multichannel is to be synthesized is merged into one road video data comprises:
By the image connecting method, the video data that multichannel is to be synthesized is merged into one road video data; Perhaps
By the image overlay mode, the video data that multichannel is to be synthesized is merged into one road video data.
5. the method for claim 1 is characterized in that, the resolution threshold value is the ratio of the way of the resolution of monitoring side and video data to be synthesized; Perhaps, at one tunnel video data to be synthesized, the resolution threshold value is that the image of video data to be synthesized desires to account for the ratio of monitoring side image size and the product of the resolution of monitoring side.
6. method as claimed in claim 5 is characterized in that, before whether the resolution of judging video data to be synthesized is no more than the resolution threshold value, also comprises step:
Receive the control signaling, and obtain the resolution threshold value by the control signaling; Perhaps,
Receive the control signaling, and obtain the resolution of monitoring side and the way of video data to be synthesized, and then obtain the resolution threshold value by the control signaling; Perhaps,
Receive the control signaling, and desire to account for the ratio of monitoring side image size and the resolution of monitoring side, and then obtain the resolution threshold value by the image of control signaling acquisition video data to be synthesized.
7. a video process apparatus is characterized in that, comprising:
First interface module is used to obtain multi-path video data to be synthesized;
Detection module is used at each road video data to be synthesized, judges that whether resolution surpasses the resolution threshold value, is equal to or less than described resolution threshold value if then resolution is adjusted into;
Synthesis module is used for the video data that multichannel is to be synthesized and merges into one road video data.
8. video process apparatus as claimed in claim 7 is characterized in that, also comprises: second interface module is used for receiving the control signaling;
The sign of first interface module by the control signaling video channel of carrying obtains the video data to be synthesized on the video channel of this sign correspondence.
9. video process apparatus as claimed in claim 8 is characterized in that, synthesis module is according to the position relation of the sign of default video channel, and the video data that multichannel is to be synthesized is merged into one road video data.
10. as claim 7 or 8 or 9 described video process apparatus, it is characterized in that synthesis module is by the image connecting method, the video data that multichannel is to be synthesized is merged into one road video data; Perhaps, by the image overlay mode, the video data that multichannel is to be synthesized is merged into one road video data.
11. video process apparatus as claimed in claim 7 is characterized in that, the resolution threshold value is the ratio of the way of the resolution of monitoring side and video data to be synthesized; Perhaps, at one tunnel video data to be synthesized, the resolution threshold value is that the image of video data to be synthesized desires to account for the ratio of monitoring side image size and the product of the resolution of monitoring side.
12. video process apparatus as claimed in claim 11 is characterized in that, also comprises: second interface module is used for receiving the control signaling, and obtains the resolution threshold value by the control signaling; Perhaps, receive the control signaling, and obtain the resolution of monitoring side and the way of video data to be synthesized, and then obtain the resolution threshold value by the control signaling; Perhaps, receive the control signaling, and desire to account for the ratio of monitoring side image size and the resolution of monitoring side, and then obtain the resolution threshold value by the image of control signaling acquisition video data to be synthesized.
13. a processing system for video is characterized in that, comprising:
The video synthesizer, be used to obtain multi-path video data to be synthesized, at each road video data to be synthesized, judge whether resolution surpasses the resolution threshold value, if then resolution is adjusted into and is equal to or less than described resolution threshold value, and the video data that multichannel is to be synthesized is merged into one road video data;
Network processing device is used for road video Data Transmission after merging to network.
14. processing system for video as claimed in claim 13 is characterized in that, network processing device also is used to receive the control signaling that client sends, and is transmitted to the video synthesizer; The sign of video synthesizer by the control signaling video channel of carrying obtains the video data to be synthesized on the video channel of this sign correspondence.
15. as claim 13 or 14 described processing system for video, it is characterized in that, also comprise:
The video interface device is used for obtaining video data from camera head, and the video data that obtains is converted to the RGB rgb video data of standard TV frequency sweep frequency;
Decoding device is used for the rgb video data are converted to light tone degree yuv video data, and the yuv video data is outputed to the video synthesizer.
16. as claim 13 or 14 described processing system for video, it is characterized in that, also comprise: code device is used for road video data after merging is converted to the video data of network format, and gives network processing device with the video Data Transmission of network format.
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