CN206596096U - Dual coding web camera - Google Patents
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- CN206596096U CN206596096U CN201720258885.4U CN201720258885U CN206596096U CN 206596096 U CN206596096 U CN 206596096U CN 201720258885 U CN201720258885 U CN 201720258885U CN 206596096 U CN206596096 U CN 206596096U
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Abstract
The utility model belongs to web camera technical field, the utility model provides a kind of dual coding web camera, and dual coding web camera includes image acquisition device, analog-digital converter, string and number generator, H.264/SVAC encoder, first network transport module and the second network transmission module；Analog-digital converter carries out video data to export yuv format video data signal after analog-to-digital conversion；Go here and there and yuv format video data is carried out output serial video data signal and parallel video data-signal after serioparallel exchange by number generator；H.264/SVAC encoder obtains H.264 video flowing and SVAC video flowings after being encoded to serial video data signal and parallel video data-signal, and H.264 video flowing and SVAC video flowings will be transmitted respectively by first network transport module and the second network transmission module, realize while exporting H.264 video flowing and SVAC video flowings.
Description
Technical field
The utility model belongs to web camera technical field, more particularly to dual coding web camera.
Background technology
With the progressively construction of smart city, security protection web camera act as more and more important effect, mesh wherein
Before, web camera carries out encoding and decoding, all SVAC standards that do not meet to employing SVAC standards in the transmission of graph image again
Equipment can not all access smart city system.And in the network such as other public security and traffic, at present then using traditional
H.264 standard carries out encoding and decoding, therefore, and exist causes according to difference in the prior art as a result of different encoding and decoding standards
The problem of image information that standard is obtained can not realize real-time Transmission and be shared.
Utility model content
The utility model provides dual coding web camera, solves to exist as a result of different volume solutions in the prior art
Code standard causes the problem of image information obtained according to various criterion can not realize real-time Transmission and be shared.
The utility model first aspect provides a kind of dual coding web camera, and the dual coding web camera includes figure
As collector, analog-digital converter, string and number generator, H.264/SVAC encoder, first network transport module and second
Network transmission module, the signal output part of described image collector connects the signal input part of the analog-digital converter, the mould
The signal output part connection string and the signal input part of number generator of number converter, the of the string and number generator
One signal output part and secondary signal output end connect H.264/SVAC first signal input part of encoder and the respectively
Binary signal input, the first signal output part and secondary signal output end of the H.264/SVAC encoder connect described respectively
The signal input part of the signal input part of first network transport module and the second network transmission module；
Described image collector obtains video data；
The analog-digital converter carries out the video data to export yuv format video data signal after analog-to-digital conversion；
Simultaneously number generator will export serial video data to the string after yuv format video data progress serioparallel exchange
Signal and parallel video data-signal；
H.264/SVAC the encoder is carried out to the serial video data signal and the parallel video data-signal
H.264 video flowing and SVAC video flowings are obtained after coding, and the H.264 video flowing and the SVAC video flowings are passed through respectively
The first network transport module and second NE are transmitted.
With reference in a first aspect, as the first embodiment of first aspect, described image collector is camera.
With reference in a first aspect, as second of embodiment of first aspect, simultaneously number generator is included at a high speed the string
Phaselocked loop, than bit pad and serializer；
It is described to carry out the parallel of processing generation lower-order digit with frequency doubling clock to the parallel data signal of input than bit pad
Data-signal；
The serializer receives the parallel data signal exported than bit pad, and is produced according to the high-speed phase-locked loop
Raw delay clock signal produces serial data signal.
With reference in a first aspect, as the third embodiment of first aspect,
H.264 the encoder to the parallel data signal by being predicted, converting and quantization and and entropy code
Etc. exporting H.264 video flowing after resume module；
The SVAC encoders by the serial data signal is predicted, converted with quantify and and entropy code at
SVAC video flowings are exported after reason.
With reference in a first aspect, as the 4th kind of embodiment of first aspect, the dual coding web camera also includes
Controller and head；
The controller controls the head motion to obtain new video data according to video data.
The utility model provides a kind of dual coding web camera, by setting H.264/SVAC encoder, realizes and regards
Frequency data acquisition module carries out SVAC codings and H.264 encoded, while exporting H.264 video flowing and SVAC video flowings, realizes
Obtain two kinds of video flowings.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are of the present utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structural representation for dual coding web camera that a kind of embodiment of the utility model is provided；
Fig. 2 is a kind of structural representation for dual coding web camera that another embodiment of the utility model is provided；
Fig. 3 is a kind of flow chart of the coding method for dual coding web camera that the utility model embodiment is provided.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is to explain this reality
With new, it is not used to limit the utility model.In order to illustrate the technical solution of the utility model, below by specific embodiment
To illustrate.
The utility model embodiment one provides a kind of dual coding web camera 10, as shown in figure 1, dual coding network shooting
Machine 10 includes image acquisition device 101, analog-digital converter 102, string and number generator 103, H.264/SVAC encoder 104, the
One network transmission module 105 and the second network transmission module 106, the signal output part connection modulus of image acquisition device 101 turn
The signal input part of parallel operation 102, the signal input of the signal output part connection string and number generator 103 of analog-digital converter 102
End, goes here and there and the first signal output part and secondary signal output end of number generator 103 connect H.264/SVAC encoder respectively
The first signal output part and second of 104 the first signal input part and secondary signal input, H.264/SVAC encoder 104
Signal output part connects the signal input part of first network transport module 105 and the letter of the second network transmission module 106 respectively
Number input；
Image acquisition device 101 obtains video data；
Analog-digital converter 102 carries out video data to export yuv format video data signal after analog-to-digital conversion；
Go here and there and number generator 103 carries out yuv format video data to export serial video data signal after serioparallel exchange
With parallel video data-signal；
H.264/SVAC obtained after encoder 104 is encoded to serial video data signal and parallel video data-signal
H.264 video flowing and SVAC video flowings, and H.264 video flowing and SVAC video flowings will pass through first network transport module respectively
105 and second NE be transmitted.
In the utility model embodiment, dual coding web camera 10 can be the various shootings such as ball machine or gunlock
Machine, image acquisition device 101 can be camera, for shooting video data.
In the utility model embodiment, analog-digital converter 102 can use data conversion and 3A units, for by video
Data conversion is into 24 yuv format video data signals, and yuv format can be YUV422 forms or YUV444 forms.
In the utility model embodiment, go here and there and number generator 103 is used to receive parallel video data, and will regard parallel
Frequency is converted into serial video data, and export parallel video data and serial according to low level is converted into after line delay of going forward side by side processing
Video data.
Specifically, as a kind of embodiment of string and number generator 103, going here and there and number generator 103 being included at a high speed
Phaselocked loop, than bit pad and serializer；
The parallel data that processing produces lower-order digit is carried out with frequency doubling clock to the parallel data signal of input than bit pad
Signal；
Serializer receives the parallel data signal exported than bit pad, and the delay clock produced according to high-speed phase-locked loop
Signal produces serial data signal.
High-speed phase-locked loop includes control signal generator, voltage controlled oscillator and driver, and control signal generator receives two
Individual different clocks input signal Clk_in, Clk_c, the clock signal of voltage controlled oscillator output feed back to control after amplifying through driver
Signal processed occurs 1 as a clock input signal Clk_c, and clock input signal Clk_in is relative external timing signal, control
Signal generator processed obtains the current controling signal of correlation, voltage controlled oscillator is according to electric current control according to different clocks input signal
Signal processed produces the clock of N number of same frequency out of phase, wherein the phase difference of two neighboring clock is 360/N, n-th clock with
The phase difference of first clock is also 360/N, and driver increases driving force to the output clock signal of voltage controlled oscillator.
Control signal generator includes 1/2 frequency divider, 1/N frequency dividers, phase demodulation/frequency device, charge pump, low pass filter and electricity
Voltage-current converter, 1/2 frequency divider and 1/N output signal of frequency divider are sent to phase demodulation/frequency device, when 1/2 frequency divider receives outside
Clock signal Clk_in；1/N frequency dividers receive the clock signal Clk_c of pressure driver feedback；Phase demodulation/frequency device, charge pump and voltage
Current converter is sequentially connected, and low pass filter is connected between charge pump and voltage current adapter, and phase demodulation/frequency device produces phase
Position/frequency difference signal PU, PD, charge pump to low pass filter fill according to phase/frequency the difference signal PU, PD received/
Electric discharge lotus, produces voltage control signal, and the voltage control signal VFILT of input is converted to electric current control by the current converter of voltage one
Signal I_CTL1, I_CTL2 processed.
Voltage controlled oscillator includes frequency controller, and the ring being connected in turn by 5 delay unit input/output terminals
Shape oscillator, in the present embodiment, each delay unit in ring oscillator have one group of differential clocks input, while exporting warp
The differential clock signal of delay is crossed to next corresponding delay unit.
Current controling signal I_CTL1, I_CTL2 produced by frequency controller receiving voltage current converter, frequency control
The output signal of device processed exports adjacent clock as the control signal of each delay unit in ring oscillator by 5 delay units
Phase difference is passed after strengthening driving force through driver for 720 5 phase clock signals Clkl, Clk2, Clk3, Clk4, ClkS
Transport to serializer, serializer includes 5 fetch bit logic circuits a, b, c, d, e and combinator circuit, fetch bit logic circuit a, b,
C, d, e make corresponding fetch bit to each bit in parallel data signal, and export corresponding data-signal to combinator circuit,
Combinator circuit is received after the output signal of all fetch bit logic circuits, exports serial data signal.
In embodiments of the present invention, H.264 standard and SVAC standard agreements H.264/SVAC are stored in encoder 104,
H.264/SVAC encoder 104 is respectively according to H.264 standard and SVAC standards to serial video data signal and parallel video number
It is believed that exporting H.264 video flowing and SVAC video flowings after number being encoded.
Specifically, H.264 encoder to the parallel data signal by being predicted, converting and quantization and and entropy volume
H.264 video flowing is exported after the resume modules such as code；
SVAC encoders by the serial data signal is predicted, converted with quantify and and entropy code processing after
Export SVAC video flowings.
Specifically, H.264 encoder can use model H3481 high definition encoder, SVAC encoders can be used
SVAC HD video encoders VS-DVS8901H-S.
Wherein, for H.264 encoder, H.264 encoder includes input module, image prediction module, prediction residual life
Into module, conversion module, entropy code module, inverse quantization and inverse transform block, image reconstruction module, classics DCT domain JND modules,
JND thresholdings modular converter, the adaptive adjusting module of prediction residual and output module, wherein：Input module respectively with image prediction
Module, prediction residual generation module are connected transmission image to be encoded with classical DCT domain JND modules, image prediction module with advance
Survey Residual Generation module to be connected the predicted value of transmission image to be encoded, the transmission that with conversion module is connected of prediction residual generation module is treated
The prediction residual of coded image, conversion module be connected with the adaptive adjusting module of prediction residual transmission H.264 convert after prediction
Residual transform coefficient, inverse quantization and inverse transform block be connected with image reconstruction module transmission rebuild after prediction residual, image weight
Modeling block is connected the image transmitted after reconstruction, classical DCT domain JND modules and JND thresholding modular converter phases with image prediction module
The vision for even transmitting classical DCT domain perceives distortion thresholding, JND thresholdings modular converter and the adaptive adjusting module phase of prediction residual
Even the vision of transmission H.264 transform domain perceives distortion thresholding, the adaptive adjusting module of prediction residual respectively with entropy code module
It is connected with inverse quantization with inverse transform block and is transferred through the prediction residual coefficient of adjustment, entropy code module is connected biography with output module
Code stream information after defeated entropy code.
Image prediction module, including：Infra-frame prediction submodule, estimation submodule and inter prediction submodule, wherein：
Infra-frame prediction submodule is connected with prediction residual generation module transmits the intra prediction value of image to be encoded, estimation submodule
Be connected transmission motion vector information with inter prediction submodule, and inter prediction submodule is connected transmission with prediction residual generation module
The inter prediction value of image to be encoded, estimation submodule is connected with input module transmits image to be encoded, infra-frame prediction
Submodule, estimation submodule and inter prediction submodule be connected respectively with image reconstruction module transmission rebuild after image.
Classical DCT domain JND modules include：Frequency characteristic submodule, light characteristic submodule, texture features submodule, when
Domain characteristic submodule and JND calculating sub modules, wherein：Frequency characteristic submodule, light characteristic submodule, texture features submodule
Be connected transmission image to be encoded with input module respectively with time domain specification submodule, and frequency characteristic submodule calculates son with JND
Module, which is connected, transmits the frequency sensitivity information of image, and light characteristic submodule is connected with JND calculating sub modules transmits image
Luminosity sensitivity information, texture features submodule is connected with JND calculating sub modules transmits the texture sensitive information of image, time domain
Characteristic submodule is connected with JND calculating sub modules transmits the time domain sensitive information of image, JND calculating sub modules and JND thresholdings
Modular converter, which is connected, transmits the discernable distortion thresholding of vision of classical DCT domain.
Prediction residual generation module produces the prediction residual of image to be encoded according to the predicted value of image to be encoded.
H.264, conversion module is converted to prediction residual.
Entropy code module carries out entropy code according to H.264 standard to the conversion coefficient after quantization.
Inverse quantization carries out inverse quantization and inverse transformation with inverse transform block to coefficient after the quantization of prediction residual, reconstructs prediction
Residual error.
Image reconstruction module reconstructs the image of coding according to the prediction residual after reconstruction.
The vision of classical DCT domain is perceived distortion thresholding and is transformed into H.264 transform domain by JND thresholdings modular converter.
Wherein, for SVAC encoders, SVAC encoders include input module, image prediction module, prediction residual generation
Module, conversion module, entropy code module, inverse quantization and inverse transform block, image reconstruction module, classics DCT domain JND modules, JND
The adaptive adjusting module of thresholding modular converter, prediction residual and output module, wherein：Input module respectively with image prediction mould
Block, prediction residual generation module are connected with classical DCT domain JND modules transmits image to be encoded, image prediction module and prediction
Residual Generation module, which is connected, transmits the predicted value of image to be encoded, and prediction residual generation module is connected to transmit with conversion module to be waited to compile
The prediction residual of code image, conversion module is connected with the adaptive adjusting module of prediction residual transmits the prediction residual after SVAC is converted
Conversion coefficient, inverse quantization and inverse transform block be connected with image reconstruction module transmission rebuild after prediction residual, image reconstruction mould
Block be connected with image prediction module transmission rebuild after image, classical DCT domain JND modules are connected biography with JND thresholding modular converters
The vision of defeated classical DCT domain perceives distortion thresholding, and JND thresholdings modular converter is connected biography with the adaptive adjusting module of prediction residual
The visions of defeated SVAC transform domains perceives distortion thresholding, the adaptive adjusting module of prediction residual respectively with entropy code module and inverse
Change is connected with inverse transform block is transferred through the prediction residual coefficient of adjustment, and entropy code module is connected with output module transmits entropy volume
Code stream information after code.
Image prediction module, including：Infra-frame prediction submodule, estimation submodule and inter prediction submodule, wherein：
Infra-frame prediction submodule is connected with prediction residual generation module transmits the intra prediction value of image to be encoded, estimation submodule
Be connected transmission motion vector information with inter prediction submodule, and inter prediction submodule is connected transmission with prediction residual generation module
The inter prediction value of image to be encoded, estimation submodule is connected with input module transmits image to be encoded, infra-frame prediction
Submodule, estimation submodule and inter prediction submodule be connected respectively with image reconstruction module transmission rebuild after image.
Classical DCT domain JND modules include：Frequency characteristic submodule, light characteristic submodule, texture features submodule, when
Domain characteristic submodule and JND calculating sub modules, wherein：Frequency characteristic submodule, light characteristic submodule, texture features submodule
Be connected transmission image to be encoded with input module respectively with time domain specification submodule, and frequency characteristic submodule calculates son with JND
Module, which is connected, transmits the frequency sensitivity information of image, and light characteristic submodule is connected with JND calculating sub modules transmits image
Luminosity sensitivity information, texture features submodule is connected with JND calculating sub modules transmits the texture sensitive information of image, time domain
Characteristic submodule is connected with JND calculating sub modules transmits the time domain sensitive information of image, JND calculating sub modules and JND thresholdings
Modular converter, which is connected, transmits the discernable distortion thresholding of vision of classical DCT domain.
Prediction residual generation module produces the prediction residual of image to be encoded according to the predicted value of image to be encoded.
Conversion module carries out SVAC conversion to prediction residual.
Entropy code module carries out entropy code according to SVAC standards to the conversion coefficient after quantization.
Inverse quantization carries out inverse quantization and inverse transformation with inverse transform block to coefficient after the quantization of prediction residual, reconstructs prediction
Residual error.
Image reconstruction module reconstructs the image of coding according to the prediction residual after reconstruction.
The vision of classical DCT domain is perceived distortion thresholding and is transformed into SVAC transform domains by JND thresholdings modular converter.
In the utility model embodiment, the network transmission module 106 of first network transport module 105 and second can be
The wireless transport modules such as 4G or WIFI.
Further, as shown in Fig. 2 dual coding web camera 10 also includes buffer 107；
Buffer 107 carries out exporting again after data buffering duplication to string and data generation to yuv format video data signal
Device 103.
By setting buffer 107, the mismatch sent between equipment and receiving device has been relaxed, has been improved between equipment
Concurrency.
Further, dual coding web camera 10 also includes controller 108 and head 109；
Controller 108 controls head 109 to move to obtain new video data according to video data.
Specifically, when controller 108 detects the information for not having to include needs collection in video data, controlling head 109
Rotate to reacquire video data, or, when controller 108 detects video data including two vehicles, control first is taken the photograph
As head and second camera difference one vehicle of each collection, to obtain the video information of each vehicle.
The utility model embodiment realizes the progress of video data acquiring module by setting H.264/SVAC encoder
SVAC is encoded and H.264 encoded, and exports H.264 video flowing and SVAC video flowings simultaneously, realizes two kinds of video flowings of acquisition.
The utility model provides a kind of coding method of dual coding web camera, as shown in figure 3, dual coding network shooting
Machine includes image acquisition device, analog-digital converter, string and number generator and H.264/SVAC encoder；
Coding method includes：
Step S101. image acquisition devices obtain video data.
Step S102. analog-digital converters carry out video data to export yuv format video data signal after analog-to-digital conversion.
Simultaneously yuv format video data is carried out exporting serial video number after serioparallel exchange step S103. strings by number generator
It is believed that number and parallel video data-signal.
Step S104.H.264/SVAC encoders are encoded to serial video data signal and parallel video data-signal
After obtain H.264 video flowing and SVAC video flowings, and H.264 video flowing and SVAC video flowings will be transmitted respectively by first network
Module and the second NE are transmitted.
Specifically, simultaneously number generator includes high-speed phase-locked loop, than bit pad and serializer to string；
Go here and there and number generator is by output serial video data signal after yuv format video data progress serioparallel exchange and simultaneously
Row video data signal, including：
The parallel data that processing produces lower-order digit is carried out with frequency doubling clock to the parallel data signal of input than bit pad
Signal；
Serializer receives the parallel data signal exported than bit pad, and the delay clock produced according to high-speed phase-locked loop
Signal produces serial data signal.
H.264/SVAC exported after encoder is encoded to serial video data signal and parallel video data-signal
H.264 video flowing and SVAC video flowings, including：
H.264/SVAC obtained after encoder is encoded to serial video data signal and parallel video data-signal
H.264 video flowing and SVAC video flowings, and will H.264 video flowing and SVAC video flowings respectively by first network transport module and
Second NE is transmitted；
Specifically, H.264 encoder to parallel data signal by being predicted, converting and quantify and and entropy code etc.
H.264 video flowing is exported after resume module；
SVAC encoders by serial data signal is predicted, converted with quantify and and entropy code processing after export
SVAC video flowings.
Dual coding web camera also includes buffer；
Coding method also includes：
Buffer carries out exporting again after data buffering duplication to string and number generator to yuv format video data signal.
Further, dual coding web camera also includes controller and head；
Controller controls head motion to obtain new video data according to video data.
Elements/steps in the utility model embodiment terminal can be combined, divided and deleted according to actual needs.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, make some equivalent substitutes or obvious modification without departing from the concept of the premise utility, and performance or
Purposes is identical, should all be considered as belonging to the scope of patent protection that the utility model is determined by the claims submitted.
Claims (5)
1. a kind of dual coding web camera, it is characterised in that the dual coding web camera includes image acquisition device, modulus
Converter, string and number generator, H.264/SVAC encoder, first network transport module and the second network transmission module,
The signal output part of described image collector connects the signal input part of the analog-digital converter, the signal of the analog-digital converter
The signal input part of the output end connection string and number generator, the first signal output part of the string and number generator and
Secondary signal output end connects the first signal input part and secondary signal input of the H.264/SVAC encoder, institute respectively
The first signal output part and secondary signal output end for stating H.264/SVAC encoder connect the first network transmission mould respectively
The signal input part of the signal input part of block and the second network transmission module；
Described image collector obtains video data；
The analog-digital converter carries out the video data to export yuv format video data signal after analog-to-digital conversion；
Simultaneously the yuv format video data is carried out exporting serial video data signal after serioparallel exchange the string by number generator
With parallel video data-signal；
H.264/SVAC the encoder is encoded to the serial video data signal and the parallel video data-signal
After obtain H.264 video flowing and SVAC video flowings, and will described in H.264 video flowing and the SVAC video flowings respectively by described
First network transport module and second NE are transmitted.
2. dual coding web camera as claimed in claim 1, it is characterised in that described image collector is camera.
3. dual coding web camera as claimed in claim 1, it is characterised in that simultaneously number generator is included at a high speed the string
Phaselocked loop, than bit pad and serializer；
It is described to carry out the parallel data that processing produces lower-order digit with frequency doubling clock to the parallel data signal of input than bit pad
Signal；
The serializer receives the parallel data signal exported than bit pad, and according to high-speed phase-locked loop generation
Delay clock signal produces serial data signal.
4. dual coding web camera as claimed in claim 1, it is characterised in that the H.264/SVAC encoder includes
H.264 encoder and SVAC encoders；
H.264 the encoder by the parallel data signal is predicted, converted with quantify and entropy code processing after
Export H.264 video flowing；
The SVAC encoders by the serial data signal is predicted, converted with quantify and and entropy code processing after
Export SVAC video flowings.
5. dual coding web camera as claimed in claim 1, it is characterised in that the dual coding web camera also includes
Controller and head；
The controller controls the head motion to obtain new video data according to video data.
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