CN107046606B - Picture transmitter device, image real-time display system and image real-time display method - Google Patents
Picture transmitter device, image real-time display system and image real-time display method Download PDFInfo
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- CN107046606B CN107046606B CN201610084354.8A CN201610084354A CN107046606B CN 107046606 B CN107046606 B CN 107046606B CN 201610084354 A CN201610084354 A CN 201610084354A CN 107046606 B CN107046606 B CN 107046606B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00095—Systems or arrangements for the transmission of the picture signal
- H04N1/00103—Systems or arrangements for the transmission of the picture signal specially adapted for radio transmission, e.g. via satellites
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3188—Scale or resolution adjustment
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Abstract
The present invention provides a kind of picture transmitter device, image real-time display system and image real-time display methods.Picture transmitter device provided by the invention, for communicating to connect with receiving and displaying device to send image to receiving and displaying device, it is characterized in that, it include: image file storage unit, display parameters storage unit, compression parameters storage unit, obtain configuration part, acquire generating unit, sending side communication unit, calculation part and sending side control unit, image to be sent is sent to receiving and displaying device by sending side communication unit, and the current cache amount that receiving and displaying device is sent is received, calculation part is based on predetermined computation formula and largest buffered amount and current cache meter calculates current reference parameter, configuration part is obtained to be based on the corresponding reference parameter range of current reference parameter acquisition and obtain corresponding compression ratio, corresponding compression ratio is set as current compression rate, generating unit is acquired according to the current compression rate being set to the original that next convey in real time Beginning image is acquired processing.
Description
Technical field
Image real-time display system and use the present invention relates to a kind of picture transmitter device, comprising the picture transmitter device
In the image real-time display method of the system.
Background technique
Projector has been widely used in the daily work life of people, especially as a kind of large screen projection equipment
It is the large-scale place more in crowds such as meeting room, classrooms, user can be allowed to set the offices such as PC by projector
The image or video content real-time display of standby middle display come out, and can watch convenient for all people.
Generally, projector is directly connected with PC and real-time display image by connecting line, that is to say, that one
Projector is currently only capable of displaying image or video content in the PC of a user of connection, and a user is currently also only
A projector can be used.
Based on the above issues, same projector or user's energy can be used simultaneously in order to meet multiple users
Enough while more projectors are used, occurs a kind of Wireless projector in the prior art, it has wireless communication module, when wireless
When projector and the PC of user are connected to same wireless network, it will be able to the image that real-time reception PC is sent
And it is shown.
However, above-mentioned Wireless projector needs after before use, user is mounted with relevant operation software in PC
Display pattern (speed-priority or image quality are preferential) is manually set in advance, this brings very big puzzlement to layman, it is not known that should
How to set.In addition, image or video information in PC are only capable of according to fixation after user sets display pattern
Compression ratio carry out in real time acquisition send, when network signal is bad, it is easy to occur frame losing, damage, even send fail
Situation causes projector that can not show present image；When network signal is preferable, and it is unable to fully cause to provide using network
Source waste.
Summary of the invention
The present invention be to solve the above-mentioned problems and carry out, and it is an object of the present invention to provide one kind can adjust in real time compression ratio from
And guarantee the image real-time display system of image superior quality transmission.
The present invention to achieve the goals above, is used with flowering structure:
<structure 1>
The present invention provides a kind of picture transmitter devices, for communicating to connect with receiving and displaying device to fill to reception display
Set transmission original image characterized by comprising image file storage unit, display parameters storage unit, compression parameters storage unit,
Obtain configuration part, acquisition generating unit, sending side communication unit, calculation part, sending side control unit, wherein image file storage unit is used
In image file of the storage containing plural frame original image, display parameters storage unit is shown for being stored on receiving and displaying device
The corresponding largest buffered amount of image and initial compression rate, compression parameters storage unit is for storing corresponding compression ratio and right with this
The relevant reference parameter range of compression ratio is answered, configuration part is obtained and is used to obtain largest buffered amount and work from display parameters storage unit
For the initial compression rate of current compression rate, acquires generating unit and processing is acquired to original image and is generated based on current compression rate
Image to be sent, sending side communication unit are used to for image to be sent being sent to receiving and displaying device, and at least receiving
The current cache amount that display device is sent, calculation part are based on predetermined computation formula and largest buffered amount and current cache meter
Current reference parameter is calculated, configuration part is obtained based on current reference parameter and obtains corresponding reference from compression parameters storage unit
Parameter area further obtains corresponding compression ratio, and corresponding compression ratio is set as current compression rate, the control of sending side control unit
It acquires generating unit and processing is acquired to the original image that next convey in real time according to the current compression rate being set.
<structure 2>
Further, the present invention also provides a kind of image real-time display systems characterized by comprising for sending out in real time
The image of image is sent to send end；And the image that end is sent is sent for network real-time reception image by wireless communication
And the reception shown shows end, wherein it includes at least one picture transmitter device that image, which sends end, and image sends dress
The picture transmitter device being set in<structure 1>, receive display end include at least one and by wireless communication network with
Each picture transmitter device communicates the receiving and displaying device of connection, and each receiving and displaying device at least sends current cache amount
To picture transmitter device.
<structure 3>
Further, the present invention also provides a kind of image real-time display methods, it is characterised in that: obtains and is receiving display
The end corresponding largest buffered amount of display image to be shown and the initial compression rate as current compression rate are based on current compression
Rate is acquired processing to original image and generates image to be sent, image to be sent is sent to receiving and displaying device, and obtain
The current cache amount for taking receiving and displaying device to send, based on predetermined computation formula and largest buffered amount and current cache meter
Current reference parameter is calculated, corresponding reference parameter range is obtained based on current reference parameter, further obtains corresponding compression
Rate, and corresponding compression ratio is set as current compression rate, control acquisition generating unit is according under the current compression rate docking being set
The original image for convey in real time is acquired processing.
The action and effect of invention
Related picture transmitter device, image real-time display system and image real-time display method according to the present invention,
Because buffer memory acquisition unit can obtain current cache amount corresponding with cache image, receiving side communication unit energy from buffer unit
Enough that current cache amount is sent to corresponding picture transmitter device according to sending side identifier, sending side communication unit shows reception
The current cache amount that device is sent is received, and calculation part can be based on predetermined computation formula and largest buffered amount and current
Buffer memory calculates current reference parameter, and obtaining configuration part can be obtained from compression parameters storage unit based on current reference parameter
Corresponding reference parameter range is further able to obtain corresponding compression ratio, and corresponding compression ratio is set as current compression rate,
So image real-time display system of the invention can adjust current compression rate in real time according to Network status, to realize automatic
Real-time Transmission high quality graphic.
Detailed description of the invention
Fig. 1 is the block diagram of image real-time display system in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of image real-time display system in the embodiment of the present invention；
Fig. 3 is the block diagram of picture transmitter device in the embodiment of the present invention；
Fig. 4 is the block diagram of receiving and displaying device in the embodiment of the present invention；
Fig. 5 a is XGA projector display parameters storage table in the embodiment of the present invention, and Fig. 5 b is in the embodiment of the present invention
WXGA projector display parameters storage table, Fig. 5 c are FullHD projector display parameters storage tables in the embodiment of the present invention；
Fig. 6 is the schematic diagram of display pattern setting screen in the embodiment of the present invention；
Fig. 7 is the schematic diagram that compression parameters correspond to table in the embodiment of the present invention；
Fig. 8 is the action flow chart of image real-time display system in the embodiment of the present invention；And
Fig. 9 is the comparison chart of transmission the image frame loss rate and the prior art of image real-time display system of the invention.
Specific embodiment
Hereinafter, being elaborated to image real-time display system of the present invention with structural map referring to attached drawing.
As in the first implementation form, the present invention provides a kind of picture transmitter device, it is used for and receiving and displaying device
Communication connection is to send original image to the receiving and displaying device characterized by comprising image file storage unit, display
Parameter storage unit, compression parameters storage unit obtain configuration part, acquisition generating unit, sending side communication unit, calculation part, sending side control
Portion processed, wherein described image file storage part is used to store the image file containing plural frame original image, the display parameters
Storage unit is described for being stored on the receiving and displaying device the corresponding largest buffered amount of image and the initial compression rate of showing
Compression parameters storage unit is for storing corresponding compression ratio and reference parameter range relevant to the corresponding compression ratio, the acquisition
Configuration part is used to obtain the largest buffered amount from the display parameters storage unit and as the described initial of current compression rate
Compression ratio, the acquisition generating unit are based on the current compression rate and are acquired processing to the original image and generate to be sent
Image, the sending side communication unit are used to for the image to be sent being sent to the receiving and displaying device, and at least connecing
Receive the current cache amount that the receiving and displaying device is sent, the calculation part be based on predetermined computation formula and it is described most
Big buffer memory and the current cache meter calculate current reference parameter, and the acquisition configuration part is based on the current reference parameter
The corresponding reference parameter range is obtained from the compression parameters storage unit, further obtains corresponding compression ratio, and will
The corresponding compression ratio is set as the current compression rate, and the sending side control unit controls the acquisition generating unit according to being set
The fixed current compression rate carries out the acquisition process to the original image that next convey in real time.
It in the first implementation form, can also have the feature that, further includes: judging part, wherein the sending side
Communication unit also receives the timestamp that the receiving and displaying device is sent, and the judging part is based on the timestamp being currently received
Whether the buffer memory being currently received with the preceding timestamp judgement once received is effective, when the judgment is yes, the meter
Calculation portion is based on predetermined computation formula and the largest buffered amount and the current cache meter calculates the current reference parameter.
It in the first implementation form, can also have the following features: wherein, display parameters storage unit is also stored with picture
Matter coefficient and resolution rate coefficient, predetermined computation formula are as follows: current reference parameter=current cache amount * image quality coefficient * resolution ratio
Coefficient/largest buffered amount.
In the first implementation form, there can also be such feature, further includes: picture storage unit, for storing at least
One display pattern setting screen；And input display unit, for showing the display pattern setting screen, wherein described aobvious
Show that parameter storage unit is also used to store largest buffered amount corresponding at least one described display pattern and initial compression rate,
The acquisition configuration part obtains the corresponding maximum based on the display pattern of setting from the display parameters storage unit
Buffer memory.
As in second of implementation form, the present invention also provides a kind of image real-time display systems, have the feature that,
It include: to send end for sending the image of image in real time；And
It for network real-time reception described image by wireless communication sends the image that sends of end and is shown
Receive display end, wherein it includes at least one picture transmitter device that described image, which sends end, and described image sending device is
The picture transmitter device of the first implementation form, the reception show that end includes at least one and network by wireless communication
The receiving and displaying device of connection is communicated with each described image sending device, each receiving and displaying device at least will be described
Current cache amount is sent to described image sending device.
In second of implementation form, there can also be such feature: where it includes multiple institutes that described image, which sends end,
Picture transmitter device is stated, each described image sending device is respectively provided with its sending side identifier, and the reception shows end packet
Containing multiple receiving and displaying devices, and each receiving and displaying device is respectively provided with receiving side identifier, each described to connect
It receives display device and its described receiving side identifier is sent to picture transmitter device.
In second of implementation form, there can also be such feature: where the receiving and displaying device includes: receive
Side communication unit, buffer unit, display unit and buffer memory acquisition unit, the receiving side communication unit send dress for receiving described image
The image to be sent and the sending side identifier sent is set, the buffer unit is to the image to be sent received
Corresponding storage is carried out with the sending side identifier, to obtain cache image, the display unit is to the caching received
Image is successively shown that the buffer memory acquisition unit obtains corresponding with the cache image current from the buffer unit
Buffer memory, the receiving side communication unit are based on the sending side identifier and the current cache amount are sent to described image transmission
Device.
In second of implementation form, there can also be such feature: where described image sending device is the first reality
The picture transmitter device of form is applied, the receiving and displaying device also includes timestamp configuration part, and the timestamp configuration part will work as
The preceding time is set as timestamp, and the timestamp is sent to described by the receiving side communication unit together with the current cache amount
Picture transmitter device.
In addition, the present invention also provides a kind of image real-time display method, feature exists as the third implementation form
In: obtain largest buffered amount corresponding with receiving display end display image to be shown and as the initial of current compression rate
Compression ratio is acquired processing to original image based on the current compression rate and generates image to be sent, will be described to be sent
Image is sent to receiving and displaying device, and obtains the current cache amount that the receiving and displaying device is sent, based on predetermined
Calculation formula and the largest buffered amount and the current cache meter calculate current reference parameter, are based on the current reference
Parameter obtains the corresponding reference parameter range, further obtains corresponding compression ratio, and the corresponding compression ratio is set
For the current compression rate, control acquisition generating unit is according to the current compression rate being set to next conveying in real time
The original image carries out the acquisition process.
In the third implementation form, can also there is such feature, further includes: setting display mode, obtain with it is described
The display pattern largest buffered amount accordingly receives the image to be sent that described image sending device is sent and described
Sending side identifier carries out corresponding storage to the image to be sent and the sending side identifier that are received, thus
To cache image, the cache image received is successively shown, obtains from the receiving and displaying device and delays with described
The corresponding current cache amount of image is deposited, the current cache amount is sent to by the figure based on the sending side identifier
As sending device.
In the third implementation form, there can also be such feature, further includes: current time is set as timestamp,
Based on the sending side identifier current cache amount and the timestamp are sent to described image sending device simultaneously, connect
The current cache amount and the timestamp that the receiving and displaying device is sent are received, based on the timestamp being currently received
Whether the buffer memory being currently received with the preceding timestamp judgement once received is effective, when the judgment is yes, using meter
Calculation portion is based on predetermined computation formula and the largest buffered amount and the current cache meter calculates current reference parameter.
<embodiment>
Fig. 1 is the block diagram of image real-time display system in the embodiment of the present invention；Fig. 2 is image in the embodiment of the present invention
The schematic diagram of real-time display system.
As illustrated in fig. 1 and 2, in the present embodiment, image real-time display system 100 is used for real-time display image, it includes
Image sends end 200 and receives display end 300.
Image sends end 200 for sending image in real time, it includes four picture transmitter devices 10.Image sends end
200 by wireless communication network 400 with receive display end 300 connect.
In the present embodiment, four 10 structures of picture transmitter device are identical, herein only to a picture transmitter device 10 into
Row illustrates.Picture transmitter device 10 can be the Image Acquisition sending device that is used as by computer, PC etc., allow operator into
Row relevant operation, it has unique sending side identifier.In addition, picture transmitter device 10 by communication network 400 with
Receiving and displaying device 20 communicates connection, in this way, image can be sent to and be connect by picture transmitter device 10 and communication network 400
Display device 20 is received to be shown.
Fig. 3 is the block diagram of picture transmitter device in the embodiment of the present invention.
As shown in figure 3, picture transmitter device 10 is deposited comprising image file storage unit 11, display parameters storage unit 12, picture
Storage portion 13, input display unit 15, obtains configuration part 16, acquisition generating unit 17, sending side communication unit at compression parameters storage unit 14
18, judging part 19, calculation part 110, not shown temporary storage part and the sending side control unit 111 in the above-mentioned each portion of control in figure.
Receiving display end 300,400 real-time reception image of network sends the image that end 100 is sent by wireless communication
And shown, it includes three receiving and displaying devices 20.
In the present embodiment, three 20 structures of receiving and displaying device are identical, herein only to a receiving and displaying device 20 into
Row illustrates.Receiving and displaying device 20 can be the image receiving and displaying device being used as by projector, computer, TV etc., it has one
A unique receiving side identifier.Here, receiving and displaying device 20 can be thrown for XGA projector, WXGA projector and FullHD
Any one in shadow machine.
Fig. 4 is the block diagram of receiving and displaying device in the embodiment of the present invention.
As shown in figure 4, receiving and displaying device 20 is obtained comprising receiving side communication unit 21, buffer unit 22, display unit 23, buffer memory
Take the receiving side control unit 26 in portion 24, timestamp configuration part 25 and the above-mentioned each portion of control.
Image file storage unit 11 is for storing not shown Streaming Media to be sent in figure.The Streaming Media to be sent is existing
Some video files, it is made of the original image containing plural frame.
Display parameters storage unit 12 is used to store XGA projector display parameters storage table, WXGA projector display parameters are deposited
Store up table and FullHD projector display parameters storage table.
Fig. 5 a is XGA projector display parameters storage table in the embodiment of the present invention.
As shown in Figure 5 a, XGA projector display parameters storage table 40 includes the first display area 41.XGA projector shows
It can know that stored display pattern includes full screen presentation, 4in1 is projected and full frame animation in parameter storage table 40, and
It can know parameter corresponding with each display pattern.For example, in receiving and displaying device 20 (XGA projector) " full screen presentation "
In display pattern, corresponding largest buffered amount is " 21M ", and initial compression rate is " 4:1 ", and differentiating rate coefficient is " 1.00 ", image quality
Coefficient is " 0.95 " in fine pattern.
Fig. 5 b is WXGA projector display parameters storage table in the embodiment of the present invention.
It can be seen from figure 5b that WXGA projector display parameters storage table 50 includes the first display area 51.WXGA is thrown
It can know that stored display pattern includes full screen presentation, 4in1 projection and full frame dynamic in shadow machine display parameters storage table 50
It draws, and can know parameter corresponding with each display pattern.For example, in receiving and displaying device 20 (WXGA projector)
In " full screen presentation " display pattern, corresponding largest buffered amount is " 27M ", and initial compression rate is " 4:1 ", differentiates rate coefficient and is
" 0.98 ", image quality coefficient are " 0.95 " in fine pattern.
Fig. 5 c is FullHD projector display parameters storage table in the embodiment of the present invention.
As can be seen that FullHD projector display parameters storage table 60 includes the first display area 61 from Fig. 5 c.
Can know in FullHD projector display parameters storage table 60 stored display pattern include full screen presentation, 4in1 projection with
And full frame animation, and can know parameter corresponding with each display pattern.For example, FullHD projector display parameters store
In receiving and displaying device 20 (FullHD projector) in " full screen presentation " display pattern, corresponding largest buffered amount is table 60
" 54M ", initial compression rate are " 4:1 ", and differentiating rate coefficient is " 0.98 ", and image quality coefficient is " 0.95 " in fine pattern.
Picture storage unit 13 is for storing display pattern setting screen.
Fig. 6 is the schematic diagram of display pattern setting screen in the embodiment of the present invention.
As shown in fig. 6, display pattern setting screen 70 includes: being used for for allowing operator to set display pattern
Select the selection region 71 of setting display mode, the selection region 72 for setting corresponding receiving and displaying device and for opening
Begin the projection key 73 projected.
For example, operator can set First equipment as projection with setting display mode for " full screen presentation " in Fig. 6
Equipment, then pressing projection key 73 can be completed the setting of display pattern.
Compression parameters storage unit 14 corresponds to table for storing compression parameters.
Fig. 7 is the schematic diagram that compression parameters correspond to table in the embodiment of the present invention.
As shown in fig. 7, it includes the first display area 81 that the compression parameters, which correspond to table 80,.Compression parameters correspond to table 80 and are stored with
Corresponding compression ratio and reference parameter range relevant to the corresponding compression ratio.It can be seen from figure 7 that working as the value of reference parameter
It falls into the range of " 0.81~1.00 ", corresponding compression ratio is " 4:1 "；When the value of reference parameter falls into the model of " 0.51~0.80 "
In enclosing, corresponding compression ratio is " 8:1 "；In the range of the value of reference parameter falls into " 0.00~0.50 ", corresponding compression ratio is
“16:1”。
Input display unit 15 is for showing display pattern setting screen 70, so that operator be allowed to set display mould
Formula.
It obtains configuration part 16 and obtains maximum accordingly delay from display parameters storage unit 12 according to the display pattern being set
Storage and initial compression rate, and initial compression rate is set as current compression rate.For example, the XGA projector in Fig. 5 a shows ginseng
In number storage table 40, display pattern is set to " full screen presentation ", and corresponding largest buffered amount is " 21M ", and initial compression rate is
“4:1”。
Acquisition generating unit 17 is used to be acquired processing simultaneously according to the original image that current compression rate treats playing stream media
Image to be sent is generated, which is temporarily stored in temporary storage part.
Sending side communication unit 18 will acquire the image to be sent and sending side that generating unit 17 generates according to receiving side identifier
Identifier is sent to receiving and displaying device 20 by communication network 400.
Receiving side communication unit 21 receives the image and hair to be sent that picture transmitter device 10 is sent by communication network 400
Send side identifier.
Buffer unit 22 is to being received image to be sent that side communication unit 21 receives and sending side identifier carries out correspondence and deposits
Storage, to obtain cache image corresponding with the image to be sent.In the present embodiment, after display pattern is set, image
Reception device 20 will distribute corresponding buffer area automatically, and the capacity of the buffer area is the largest buffered amount of buffer unit.
The cache image that display unit 23 stores buffered portion 22 is successively shown, to realize to picture transmitter device
Streaming Media real-time perfoming in 10 is shown.
Buffer memory acquisition unit 24 obtains current cache amount corresponding with cache image from buffer unit 22.
Current time is set as timestamp by timestamp configuration part 25.
The current cache amount and time that receiving side communication unit 21 is obtained buffer memory acquisition unit 24 based on sending side identifier
The timestamp that stamp configuration part 25 is set is sent to picture transmitter device 10 by communication network 400.
The current cache amount and time that sending side communication unit 18 sends receiving and displaying device 20 by communication network 400
Stamp is received.Current cache amount and timestamp are stored temporarily in buffer unit.
Judging part 19 is worked as based on the timestamp that sending side communication unit 18 is currently received with the preceding timestamp judgement once received
Before the buffer memory that receives it is whether effective.Specifically, when the timestamp being currently received is earlier than the preceding timestamp once received, judging part
The current cache amount data invalid that 19 judgements are currently received；When the timestamp that the timestamp being currently received once receives before being later than,
Judging part 19 judges that the current cache amount data being currently received are effective.The effective current cache amount data storage is temporarily stored
In temporary storage part.
Calculation part 110 is according to predetermined computation formula and the received largest buffered amount of sending side communication unit 18 and current cache
Meter calculates current reference parameter.Predetermined computation formula in the present embodiment is that " current reference parameter=Current buffer amount * is drawn
Matter coefficient * differentiates rate coefficient/maximum cushioning amount ", compare for convenience, the reference parameter being calculated only retains two significant figures
Word.For example, current receiving and displaying device 20 is " XGA projector ", current display mode is " full frame animation ", corresponding maximum slow
Storage is " 42M ", and current cache amount is " 30M ", and differentiating rate coefficient is " 1.00 ", and image quality coefficient is " 0.95 ", is calculated
Reference parameter is " 0.68 ", and corresponding mode is " standard " at this time.Specifically, in the present embodiment, and as current compression
The corresponding current resolution of initial compression rate (4:1) of rate is " fine (4:1) ", and corresponding image quality coefficient is 0.95.It is adopting
After collection processing, the correspondence compression ratio based on reference parameter range is " standard (8:1) ", in the calculating of further sampling processing
Cheng Zhong then uses the corresponding image quality coefficient 0.975 of mode standard, and differentiates rate coefficient and sampled, calculated.If (adopted
After collection processing, the correspondence compression ratio based on reference parameter range is " basic (16:1) ", in the calculating of further sampling processing
In the process, then the corresponding image quality coefficient 1.00 of basic schema is used, and differentiates rate coefficient and is sampled, calculated.)
The current reference parameter that configuration part 16 is calculated according to calculation part 110 is obtained to obtain from compression parameters storage unit 14
Corresponding reference parameter range is taken, further obtains corresponding compression ratio, and the correspondence compression ratio is set as current compression rate.
For example, the current reference parameter being calculated when calculation part 110 is " 0.68 ", corresponding reference parameter range be " 0.51~
0.80 ", corresponding compression ratio is " 8:1 ".
Acquisition generating unit 17 adopts the original image that next convey in real time according to the current compression rate being set
Collection processing.
Sending side control unit 111 includes for controlling image file storage part 11, picture storage unit 13, display parameters storage
Portion 12, compression parameters storage unit 14, input display unit 15, obtain configuration part 16, acquisition generating unit 17, sending side communication unit 18,
The computer program that judging part 19 and calculation part 110 are run.
Receiving side control unit 26 includes to obtain for controlling and receiving side communication unit 21, buffer unit 22, display unit 23, buffer memory
The computer program that portion 24 and timestamp configuration part 25 are run.
Fig. 8 is the action flow chart of image real-time display system in the embodiment of the present invention.
As shown in figure 8, in the present embodiment, the motion flow of image real-time display system 100 comprises the following steps:
Step S1 inputs display unit 15 and shows to display pattern setting screen 70, operator's setting display mode, so
After enter step S2.
Step S2 obtains configuration part 16 and is obtained from display parameters storage unit 12 according to the display pattern being set accordingly
Largest buffered amount and initial compression rate, and initial compression rate is set as current compression rate, subsequently into step S3.
Step S3, acquisition generating unit 17 adopt the original image in image file storage unit 11 based on current compression rate
Collection handles and generates image to be sent, subsequently into step S4.
Step S4, sending side communication unit 18 are based on receiving side identifier for image to be sent and sending side identifier by leading to
Communication network 400 is sent to receiving and displaying device 20, subsequently into step S5.
Step S5, receiving side communication unit 21 by communication network 400 receive the image that sends of picture transmitter device 10 and
Sending side identifier, subsequently into step S6.
Step S6, buffer unit 22 is to being received image to be sent that side communication unit 21 receives and sending side identifier carries out
Corresponding storage, so that cache image is obtained, subsequently into step S7.
Step S7, the cache image that display unit 23 stores buffered portion 22 is successively shown, subsequently into step S8.
Step S8, buffer memory acquisition unit 24 obtain current cache amount corresponding with cache image from buffer unit 22, so
After enter step S9.
Current time is set as timestamp by step S9, timestamp configuration part 25, subsequently into step S10.
Step S10, the current cache that receiving side communication unit 21 is obtained buffer memory acquisition unit 24 based on sending side identifier
The timestamp that amount and timestamp configuration part 25 are set is sent to picture transmitter device 10 by communication network 400, subsequently into step
Rapid S11.
Step S11, sending side communication unit 18 receive current cache amount and timestamp by communication network 400, subsequently into
Step S12.
Step S12, the timestamp and the preceding time once received that judging part 19 is currently received based on sending side communication unit 18
Whether the buffer memory that stamp judgement is currently received is effective, when the judgment is yes, enters step S13, when the judgment is no, enters step
S15。
Step S13, calculation part 110 are received based on predetermined computation formula and largest buffered amount and sending side communication unit 18
Current cache meter calculates current reference parameter, subsequently into step S14.
Step S14 obtains configuration part 16 based on current reference parameter and obtains corresponding ginseng from compression parameters storage unit
Parameter area is examined, corresponding compression ratio is further obtained, and corresponding compression ratio is set as current compression rate, subsequently into step
S14。
Step S15, judges whether current Streaming Media finishes, and when the judgment is no, enters step S3, when being judged as YES
When, into end state.
In the prior art, the transmission performance of image display system is generally measured using frame loss rate, frame loss rate is lower, then passes
Defeated performance is better.Here, the calculation formula of frame loss rate are as follows: " frame loss rate=(acquired frame number-broadcasting frame number)/acquired frame number *
100% ".
Fig. 9 is the comparison chart of transmission the image frame loss rate and the prior art of image real-time display system of the invention.
As shown in figure 9, being counted in the case where display pattern is full screen presentation, in XGA projector, the prior art is adopted
Frame loss rate with fixed image quality transmission is 4%, and the frame loss rate of the image real-time display system of the present embodiment is 2.8%；In WXGA
In projector, the prior art uses the frame loss rate of fixed image quality transmission, and the image real-time display system of the present embodiment is lost for 7%
Frame per second is 3%；In FullHD projector, the prior art uses the frame loss rate of fixed image quality transmission for 10.9%, the present embodiment
Image real-time display system frame loss rate be 3.3%.It can be seen that the transmission performance of the image real-time display system of the present embodiment is equal
Better than the prior art using the effect of fixed image quality transmission.
The action and effect of embodiment
The image real-time display system according to involved in the present embodiment, because buffer memory acquisition unit can be obtained from buffer unit
Current cache amount corresponding with cache image is taken, receiving side communication unit can send out current cache amount according to sending side identifier
It sending to corresponding picture transmitter device, sending side communication unit receives the current cache amount that receiving and displaying device is sent,
Calculation part can calculate current reference parameter based on predetermined computation formula and largest buffered amount and current cache meter, and acquisition is set
Corresponding reference parameter range can be obtained based on current reference parameter from compression parameters storage unit by determining portion, be further able to
Corresponding compression ratio is obtained, and corresponding compression ratio is set as current compression rate, so, the image real-time display system of the present embodiment
Current compression rate can be adjusted in real time according to Network status, to realize automatic real-time Transmission high quality graphic.
Above embodiment is preferred case of the invention, the protection scope being not intended to limit the invention.
In the present embodiment, the display parameters storage unit of image real-time display system is stored with XGA projector display parameters
Storage table, WXGA projector display parameters storage table and FullHD projector display parameters storage table.As figure of the invention
As real-time display system, display parameters storage unit can store single display parameters storage table as needed, as long as being able to achieve this
Invent the effect of automatic real-time Transmission high quality graphic.
In addition, in the present embodiment, buffer memory acquisition unit first obtains from buffer unit corresponding with cache image current
Current time is set as timestamp again by buffer memory, timestamp configuration part, but sequence can exchange in the present invention, as long as can be real
The effect of the existing automatic real-time Transmission high quality graphic of the present invention.
In addition, in the present embodiment, it includes four picture transmitter devices that image, which sends end, receiving display end includes three
A receiving and displaying device, and in image real-time display system of the invention, image send end can also for comprising one or
More than one picture transmitter device, receive display end can also for comprising one or more receiving and displaying devices, at this point,
Also it is able to achieve the effect of real-time Transmission high quality graphic of the present invention.
Claims (11)
1. a kind of picture transmitter device, original to send to the receiving and displaying device for communicating to connect with receiving and displaying device
Image is to allow the receiving and displaying device to be shown characterized by comprising
Image file storage unit, compression parameters storage unit, obtains configuration part, acquisition generating unit, sending side at display parameters storage unit
Communication unit, calculation part, sending side control unit, wherein described image file storage part is for storing containing plural frame original image
Image file,
The display parameters storage unit, which is used to store, shows mould at least one shown on the receiving and displaying device
Formula is corresponding and for the largest buffered amount and initial compression cached from the received image of described image sending device
Rate,
The compression parameters storage unit for storing corresponding compression ratio and reference parameter range relevant to the corresponding compression ratio,
The acquisition configuration part from the display parameters storage unit for obtaining the largest buffered amount and as current compression
The initial compression rate of rate,
The acquisition generating unit is based on the current compression rate and is acquired processing to the original image and generates figure to be sent
Picture,
The sending side communication unit is used to for the image to be sent being sent to the receiving and displaying device, and at least receiving
The current cache amount that the receiving and displaying device is sent,
The calculation part is based on predetermined computation formula and the largest buffered amount and the current cache meter calculates current ginseng
Parameter is examined,
The acquisition configuration part is obtained from the compression parameters storage unit corresponding described based on the current reference parameter
Reference parameter range further obtains corresponding compression ratio, and the corresponding compression ratio is set as the current compression rate,
The sending side control unit controls the acquisition generating unit according to the current compression rate being set to next real
When the original image that conveys carry out the acquisition process.
2. picture transmitter device according to claim 1, which is characterized in that further include:
Judging part,
Wherein, the sending side communication unit also receives the timestamp that the receiving and displaying device is sent,
The judging part is currently received based on the timestamp and the preceding timestamp judgement once received being currently received
Whether the buffer memory is effective, and when the judgment is yes, the calculation part is based on predetermined computation formula and the largest buffered amount
The current reference parameter is calculated with the current cache meter.
3. picture transmitter device according to claim 2, it is characterised in that:
Wherein, the display parameters storage unit is also stored with image quality coefficient and differentiates rate coefficient,
The predetermined computation formula are as follows: current reference parameter=current cache amount * image quality coefficient * differentiates rate coefficient/largest buffered
Amount.
4. picture transmitter device according to claim 2 or 3, which is characterized in that further include:
Picture storage unit, for storing at least one display pattern setting screen；And
Display unit is inputted, for showing the display pattern setting screen, wherein
The display parameters storage unit is also used to store largest buffered amount corresponding with the display pattern and initial compression
Rate,
The acquisition configuration part is obtained from the display parameters storage unit corresponding described based on the display pattern of setting
Largest buffered amount.
5. a kind of image real-time display system characterized by comprising
Image for sending image in real time sends end；And
The image that end is sent and the reception shown are sent for network real-time reception described image by wireless communication
Show end,
Wherein, it includes at least one picture transmitter device that described image, which sends end, and described image sending device is claim 1
To the picture transmitter device described in any one of claim 4,
The reception shows that end includes at least one and network and each described image sending device phase by wireless communication
The current cache amount is at least sent to described image by the receiving and displaying device of communication connection, each receiving and displaying device
Sending device.
6. image real-time display system according to claim 5, it is characterised in that:
It includes multiple described image sending devices that described image, which sends end, and each described image sending device is respectively provided with its hair
Side identifier is sent,
The reception shows that end includes multiple receiving and displaying devices, and each receiving and displaying device is respectively provided with and connects
Side identifier is received, its described receiving side identifier is sent to picture transmitter device by each receiving and displaying device.
7. image real-time display system according to claim 6, it is characterised in that:
Wherein, the receiving and displaying device includes: receiving side communication unit, buffer unit, display unit and buffer memory acquisition unit,
The receiving side communication unit is for receiving the image to be sent and the transmission that described image sending device is sent
Side identifier,
The buffer unit carries out corresponding storage to the image to be sent and the sending side identifier that receive, to obtain
Cache image,
The display unit successively shows the cache image received,
The buffer memory acquisition unit obtains current cache amount corresponding with the cache image from the buffer unit,
The receiving side communication unit is based on the sending side identifier and the current cache amount is sent to described image transmission dress
It sets.
8. image real-time display system according to claim 7, it is characterised in that:
Wherein, described image sending device is the described in any item picture transmitter devices of claim 2~4,
The receiving and displaying device also includes timestamp configuration part,
Current time is set as timestamp by the timestamp configuration part,
The timestamp is sent to described image sending device together with the current cache amount by the receiving side communication unit.
9. a kind of image real-time display method, it is characterised in that:
It obtains corresponding at least one display pattern performed image display in reception display end and is used for received figure
Initial compression rate as the largest buffered amount cached and as current compression rate,
Processing is acquired to original image based on the current compression rate and generates image to be sent,
The image to be sent is sent to receiving and displaying device, and obtains the current cache that the receiving and displaying device is sent
Amount,
Current reference parameter is calculated based on predetermined computation formula and the largest buffered amount and the current cache meter,
Corresponding reference parameter range is obtained based on the current reference parameter, further obtains corresponding compression ratio, and by institute
It states corresponding compression ratio and is set as the current compression rate,
Control acquisition generating unit is according to the current compression rate being set to the original image that next convey in real time
Carry out the acquisition process.
10. image real-time display method according to claim 9, which is characterized in that further include:
Setting display mode,
The largest buffered amount corresponding with the display pattern is obtained,
The image to be sent and sending side identifier that picture transmitter device is sent are received,
Corresponding storage is carried out to the image to be sent and the sending side identifier that are received, to obtain caching figure
Picture,
The cache image received is successively shown,
The current cache amount corresponding with the cache image is obtained from the receiving and displaying device,
The current cache amount is sent to described image sending device based on the sending side identifier.
11. image real-time display method according to claim 10, which is characterized in that further include:
Current time is set as timestamp,
Based on the sending side identifier current cache amount and the timestamp are sent to described image simultaneously and send dress
It sets,
The current cache amount and the timestamp that the receiving and displaying device is sent are received,
The buffer memory being currently received is judged based on the timestamp and the preceding timestamp once received being currently received
Whether effectively,
When the judgment is yes, predetermined computation formula and the largest buffered amount and the current cache amount are based on using calculation part
Calculate current reference parameter.
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| CN107734300A (en) * | 2017-10-19 | 2018-02-23 | 歌尔科技有限公司 | Image transfer method and equipment |
| CN110781150A (en) * | 2019-10-10 | 2020-02-11 | 北京无限光场科技有限公司 | Data transmission method and device and electronic equipment |
| CN112882672B (en) * | 2021-02-26 | 2024-01-23 | 京东方科技集团股份有限公司 | Near-eye display control method and device and near-eye display equipment |
| CN115696059A (en) * | 2021-07-28 | 2023-02-03 | Oppo广东移动通信有限公司 | Image processing method, image processing device, storage medium and electronic equipment |
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