CN102724431A - Method and system for synthesis of multipicture high-definition images - Google Patents
Method and system for synthesis of multipicture high-definition images Download PDFInfo
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- CN102724431A CN102724431A CN2012102026416A CN201210202641A CN102724431A CN 102724431 A CN102724431 A CN 102724431A CN 2012102026416 A CN2012102026416 A CN 2012102026416A CN 201210202641 A CN201210202641 A CN 201210202641A CN 102724431 A CN102724431 A CN 102724431A
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Abstract
The invention discloses a method for synthesis of multipicture high-definition images. The method includes the steps: a serial concatenated multistage signal processing unit is used for transmitting image data streams received by a signal processing unit at each stage and digital signals transmitted by a preceding signal processing unit to a subsequent signal processing unit in a superposition manner until completion of receiving of the image data streams; and an image processing unit finally obtains multistage digital signals and converts the multistage digital signals into image signals to output. The invention further discloses a corresponding system for synthesis of the multipicture high-definition images. The method and the system in the embodiment has the advantages that the structure is simple, optional multichannel image signals can be synthesized, and the transmitted signals are free from attenuation so that the multipicture high-definition images can be outputted.
Description
Technical field
The present invention relates to technical field of image processing, relate in particular to a kind of many pictures high-definition image synthetic method and system.
Background technology
At present, the picture synthesizer can be exported by synthetic after treatment one road image of image data stream dissimilar multichannel or form, just can on the display device that connects, show multi-picture.
Existing many pictures synthesizer adopts DSP signal processor or FPGA signal processor to handle more on the market; The transmission plan one of prior art: as shown in Figure 1, Fig. 1 is the structural representation of DSP signal processor processes image data stream in the prior art, utilizes DSP signal processor processes four road CVBS signals; Processing mode is simple relatively; But can not support high-definition signal, image definition is low, can't satisfy present electronic product and constantly pursue the demand that high definition shows; The transmission plan two of prior art: utilize the mode of FPGA signal processor processes signal, as shown in Figure 2, Fig. 2 is the structural representation of FPGA signal processor processes image data stream in the prior art; Support the image data stream output DVI video format image of DVI video format and VGA video format, though resolution is high, this kind Processing Structure complex design; Autgmentability is poor, and the number of pictures of cutting apart is limited, can't accomplish any expansion; More can't change the picture position arbitrarily; In case hardware typing, the input signal format that can support and quantity be just typing also, generally can only import four the tunnel.
Summary of the invention
Main purpose of the present invention provides a kind of many pictures high-definition image synthetic method and system, aim to provide simple in structure, can synthesize any multiway images signal, transmission signals zero-decrement many pictures high-definition image synthetic method and system.
The invention provides a kind of many pictures high-definition image synthetic method, said method comprising the steps of:
The multilevel signal processing unit of serially concatenated transmits next digital signal superposed transmission to next stage with image data stream and the upper level signal processing unit that each grade signal processing unit receives, and finishes until receiving image data stream;
Graphics processing unit receives the multistage digital signal that finally obtains, and is translated into picture signal and output.
Preferably, the step of digital signal superposed transmission to the next stage that image data stream that the multilevel signal processing unit of said serially concatenated receives each grade signal processing unit and the transmission of upper level signal processing unit come also comprises:
Judge whether the image data stream that receives is digital signal:
If then itself and upper level signal processing unit are transmitted next digital signal superposed transmission to next stage;
Otherwise, be translated into digital signal earlier, transmit next digital signal superposed transmission to next stage with the upper level signal processing unit again.
Preferably, between per two adjacent signal processing units of said multilevel signal processing unit, a LVDS Low Voltage Differential Signal transport module and a Transistor-Transistor Logic level signal conversion module are set all.
Preferably, said image data stream and digital signal are one-channel signal.
Preferably, said graphics processing unit receives the multistage digital signal that finally obtains, and is translated into the step of picture signal and output, specifically comprise,
According to preset window definition pattern, adopt chroma key technology to handle the picture signal stacked system.
The present invention also provides a kind of many pictures high-definition image synthesis system, and said system comprises:
The multilevel signal processing unit of serially concatenated,
Signal processing unit is used for image data stream that receives and upper level signal processing unit are transmitted next digital signal superposed transmission to next stage, finishes until receiving image data stream;
Graphics processing unit is used to receive the multistage digital signal that finally obtains, and is translated into picture signal and output.
Preferably, said signal processing unit is used to also judge whether the image data stream that receives is digital signal:
If then itself and upper level signal processing unit are transmitted next digital signal superposed transmission to next stage;
Otherwise, be translated into digital signal earlier, transmit next digital signal superposed transmission to next stage with the upper level signal processing unit again.
Preferably, be equipped with a LVDS Low Voltage Differential Signal transport module and a Transistor-Transistor Logic level signal conversion module between per two adjacent signal processing units of said multilevel signal processing unit.
Preferably, said image data stream and digital signal are one-channel signal.
Preferably, said graphics processing unit also comprises:
The chroma key processing unit is used for the window definition mode command that sends according to system, adopts chroma key technology to handle the picture signal stacked system.
Next digital signal superposed transmission is transmitted to next stage through serially concatenated multilevel signal processing unit with image data stream and the upper level signal processing unit that each grade signal processing unit receives in many pictures high-definition image synthetic method of the present invention and system; Receive the multistage digital signal that finally obtains by graphics processing unit, be translated into picture signal and output.Therefore, it is not only simple in structure, can synthesize any multiway images signal, and transmission signals is undamped, thereby realizes many pictures of output high-definition image.
Description of drawings
Fig. 1 is the structural representation of DSP signal processor processes image data stream in the prior art;
Fig. 2 is the structural representation that FPGA signal processor processes image data stream in the technology is arranged;
Fig. 3 is the flow chart of a kind of many pictures high-definition image of the present invention synthetic method one embodiment;
Fig. 4 is a flow chart of judging the image data stream kind among a kind of many pictures high-definition image of the present invention synthetic method one embodiment;
Fig. 5 is the workflow sketch map of a kind of many pictures high-definition image of the present invention synthetic method;
Fig. 6 is the structural representation of a kind of many pictures high-definition image of the present invention synthesis system one embodiment;
Fig. 7 is the structural representation of graphics processing unit among Fig. 6;
Fig. 8 is the first arrangement mode sketch map of three window schemes in the predefined pattern;
Fig. 9 is the second arrangement mode sketch map of three window schemes in the predefined pattern;
Figure 10 is the 3rd an arrangement mode sketch map of three window schemes in the predefined pattern;
Figure 11 is the 4th an arrangement mode sketch map of three window schemes in the predefined pattern;
Figure 12 is the 5th an arrangement mode sketch map of three window schemes in the predefined pattern.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
Further specify technical scheme of the present invention below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is the flow chart of a kind of many pictures high-definition image of the present invention synthetic method one embodiment; Fig. 4 is a flow chart of judging the image data stream kind among a kind of many pictures high-definition image of the present invention synthetic method one embodiment; Fig. 5 is the workflow sketch map of a kind of many pictures high-definition image of the present invention synthetic method.The invention provides a kind of many pictures high-definition image synthetic method, said method comprising the steps of:
Step S10, image data stream and next digital signal superposed transmission to the next stage of upper level signal processing unit transmission that the multilevel signal processing unit 10 of serially concatenated receives each grade signal processing unit:
Carry out step S11; Judge whether the image data stream that receives is digital signal; If the image data stream that receives is an analog signal, then carry out step S12, be translated into digital signal; Carrying out step S13 then, transmitting next digital signal superposed transmission to next stage with the upper level signal processing unit; If the image data stream that receives is a digital signal, then directly carry out step S13, transmit next digital signal superposed transmission to next stage with the upper level signal processing unit; Handle the image data stream of receptions at different levels according to this, finish until receiving image data stream;
Step S20, graphics processing unit 20 receives the multistage digital signal that finally obtains, and is translated into picture signal and output.
Adopt concatenation technology serial multilevel signal processing unit, said image data stream and digital signal are one-channel signal, and each grade signal processing unit is only handled two paths of signals.Each signal processing unit can insert one tunnel new image data stream, comprises the video format of various digital signals such as DVI, VGA, YPbPr, CVBS or analog signal.Through step S10; Make the two paths of signals that in signal processing unit, superposes be digital signal; At per two adjacent signal processing units 11 of said multilevel signal processing unit 10, a LVDS Low Voltage Differential Signal transport module 41 and a Transistor-Transistor Logic level signal conversion module 42 all are set between 12; Two ways of digital signals after LVDS Low Voltage Differential Signal transport module 41 will superpose is converted into the LVDS Low Voltage Differential Signal; Adopt extremely low voltage swing high speed differential transmission data, can realize high transfer rate, low-power consumption, low error rate and low crosstalking, satisfy the requirement of high-performance data transmission; Make transmission signals undamped, guaranteed the transmission quality of high-definition image data; In the time will reaching the next stage signal processing unit; Transistor-Transistor Logic level signal conversion module 42 converts the LVDS Low Voltage Differential Signal transmission of into Transistor-Transistor Logic level signal; Can guarantee that signal is transferred to far distance, help realizing the serially concatenated expansion of signal processing unit.
For example; If image data stream 31 is an analog signal; Then signal processing unit 11 is translated into digital signal and transmits with the digital signal stack continuation that the upper level transmission comes; Processing through LVDS Low Voltage Differential Signal transport module 41 and Transistor-Transistor Logic level signal conversion module 42 transfers to signal processing unit 12, and the image data stream 32 that signal processing unit 12 will newly receive is converted into digital signal and continues to transfer to next LVDS Low Voltage Differential Signal transport module 41, the amount of images that can import as required with the next digital signal stack of Transistor-Transistor Logic level signal conversion module 42 transmission; Constantly expansion inserts new signal processing unit.
Step S20 specifically comprises, according to preset window definition pattern, adopts chroma key (Chroma Key) technical finesse picture signal stacked system.Generally; In the time of on a big picture is added to a little picture, big picture just can cover whole little picture, after employing chroma key (Chroma Key) technology; Just can the content of little picture be shown, thereby can exchange between many pictures of realizing superposeing.
Particularly, said window definition pattern comprises:
Predefined pattern and self-defined pattern,
Predefined pattern: adopt chroma key (Chroma Key) technical finesse picture signal stacked system according to preset image window arrangement mode; The window that defines many pictures is in advance put mode; Set the coordinate of each window, the just corresponding window arrangement mode of corresponding selection when the picture of needs output some sees also Fig. 8-Figure 12; The sketch map of five kinds of arrangement modes of three window schemes, Fig. 8 are the first arrangement mode sketch mapes of three window schemes in the predefined pattern; Fig. 9 is the second arrangement mode sketch map of three window schemes in the predefined pattern; Figure 10 is the 3rd an arrangement mode sketch map of three window schemes in the predefined pattern; Figure 11 is the 4th an arrangement mode sketch map of three window schemes in the predefined pattern; Figure 12 is the 5th an arrangement mode sketch map of three window schemes in the predefined pattern.
Self-defined pattern: user adjustable mode just; The coordinate that the user can freely be provided with each image window comes the moving window position and changes window size, adopts chroma key (Chroma Key) technical finesse picture signal stacked system according to the image window arrangement mode instruction of user's input.
Just can realize the output of many pictures high-definition image and to the setting of each picture arrangement mode based on above method.
Please consult Fig. 6 and Fig. 7 in the lump, Fig. 6 is the structural representation of a kind of many pictures high-definition image of the present invention synthesis system one embodiment; Fig. 7 is the structural representation of graphics processing unit among Fig. 6.The present invention also provides a kind of many pictures high-definition image synthesis system, and said system comprises:
The multilevel signal processing unit 10 of serially concatenated,
Signal processing unit is used for image data stream that receives and next digital signal superposed transmission to the next stage of upper level signal processing unit transmission:
If the image data stream that receives is an analog signal, then be translated into digital signal and transmit next digital signal superposed transmission to next stage with the upper level signal processing unit again, handle the image data stream of receptions at different levels according to this, finish until receiving image data stream;
Per two adjacent signal processing units 11 of said multilevel signal processing unit 10, be equipped with a LVDS Low Voltage Differential Signal transport module 41 and a Transistor-Transistor Logic level signal conversion module 42 between 12.Said image data stream and digital signal are one-channel signal.
Said graphics processing unit 20 also comprises:
Chroma key processing unit 21 is used for the window definition mode command that sends according to system, adopts chroma key (Chroma Key) technical finesse picture signal stacked system.
Particularly, said window definition pattern comprises:
Predefined pattern and self-defined pattern,
Predefined pattern: handle the picture signal stacked system according to preset image window arrangement mode;
Self-defined pattern: according to the image window arrangement mode instruction process picture signal stacked system of user's input.
, repeat no more please with reference to Fig. 3-Fig. 5 and noted earlier about the method for the synthetic many pictures high-definition image of many pictures high-definition image synthesis system here.
Next digital signal superposed transmission is transmitted to next stage through the multilevel signal processing unit of serially concatenated with image data stream and the upper level signal processing unit that each grade signal processing unit receives in many pictures high-definition image synthetic method of the embodiment of the invention and system; Receive the multistage digital signal that finally obtains by graphics processing unit, be translated into picture signal and output.Therefore, it is not only simple in structure, can synthesize any multiway images signal, and transmission signals is undamped, thereby realizes many pictures of output high-definition image.In addition, utilize chroma key (Chroma Key) treatment technology to realize that the image frame of stack exchanges and freely adjusts.
The above is merely the preferred embodiments of the present invention; Be not so limit its claim; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the synthetic method of picture high-definition image more than a kind is characterized in that, said method comprising the steps of:
The multilevel signal processing unit of serially concatenated transmits next digital signal superposed transmission to next stage with image data stream and the upper level signal processing unit that each grade signal processing unit receives, and finishes until receiving image data stream;
Graphics processing unit receives the multistage digital signal that finally obtains, and is translated into picture signal and output.
2. many pictures high-definition image synthetic method according to claim 1; It is characterized in that; The step of digital signal superposed transmission to the next stage that image data stream that the multilevel signal processing unit of said serially concatenated receives each grade signal processing unit and the transmission of upper level signal processing unit come also comprises:
Judge whether the image data stream that receives is digital signal:
If then itself and upper level signal processing unit are transmitted next digital signal superposed transmission to next stage;
Otherwise, be translated into digital signal earlier, transmit next digital signal superposed transmission to next stage with the upper level signal processing unit again.
3. many pictures high-definition image synthetic method according to claim 1; It is characterized in that, between per two adjacent signal processing units of said multilevel signal processing unit, a LVDS Low Voltage Differential Signal transport module and a Transistor-Transistor Logic level signal conversion module are set all.
4. many pictures high-definition image synthetic method according to claim 1 is characterized in that said image data stream and digital signal are one-channel signal.
5. many pictures high-definition image synthetic method according to claim 1 is characterized in that, said graphics processing unit receives the multistage digital signal that finally obtains, and is translated into the step of picture signal and output, specifically comprise,
According to preset window definition pattern, adopt chroma key technology to handle the picture signal stacked system.
6. the synthesis system of picture high-definition image more than a kind is characterized in that said system comprises:
The multilevel signal processing unit of serially concatenated,
Signal processing unit is used for image data stream that receives and upper level signal processing unit are transmitted next digital signal superposed transmission to next stage, finishes until receiving image data stream;
Graphics processing unit is used to receive the multistage digital signal that finally obtains, and is translated into picture signal and output.
7. many pictures high-definition image synthesis system according to claim 6 is characterized in that, said signal processing unit is used to also judge whether the image data stream that receives is digital signal:
If then itself and upper level signal processing unit are transmitted next digital signal superposed transmission to next stage;
Otherwise, be translated into digital signal earlier, transmit next digital signal superposed transmission to next stage with the upper level signal processing unit again.
8. many pictures high-definition image synthesis system according to claim 6; It is characterized in that, be equipped with a LVDS Low Voltage Differential Signal transport module and a Transistor-Transistor Logic level signal conversion module between per two adjacent signal processing units of said multilevel signal processing unit.
9. many pictures high-definition image synthesis system according to claim 6 is characterized in that said image data stream and digital signal are one-channel signal.
10. many pictures high-definition image synthesis system according to claim 6 is characterized in that said graphics processing unit also comprises:
The chroma key processing unit is used for the window definition mode command that sends according to system, adopts chroma key technology to handle the picture signal stacked system.
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Application publication date: 20121010 |