CN105677279B - Desktop area sharing method, system and corresponding shared end and viewing end - Google Patents
Desktop area sharing method, system and corresponding shared end and viewing end Download PDFInfo
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- CN105677279B CN105677279B CN201610012545.3A CN201610012545A CN105677279B CN 105677279 B CN105677279 B CN 105677279B CN 201610012545 A CN201610012545 A CN 201610012545A CN 105677279 B CN105677279 B CN 105677279B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Abstract
A kind of desktop area sharing method of offer of the embodiment of the present invention, system and corresponding shared end and viewing end.The desktop area shared system includes shared end and viewing end, and the shared end is communicated to connect with the viewing end, and the shared end includes image capture module, region of variation computing module, image block module, splits' positions module and data transmission blocks；The viewing end includes data reception module, piecemeal decompression module, background cache module and renders display module.Desktop area sharing method and system provided in an embodiment of the present invention, which reduce bad Network status, influences picture quality, reduces the data of transmission, enhances the real-time of Image Sharing.
Description
Technical field
The present invention relates to technical field of data processing, in particular to a kind of desktop area sharing method, system and phase
The shared end and viewing end answered.
Background technology
Currently, on computer desktop or desktop some application window (desktop dynamic display area) shared display work(
Can, it is mainly used for multi-party mutual assistance or video conference field.It is used for example, the computer desktop of oneself is shared to another party by a side user
Family control solves the problems, such as some；Or in multipart video-meeting, certain document sharing is shown to other users and begged for by a side user
By the window that entire Desktop Share can be shared to the document to other users or only is watched to other users.
If traditional scheme will ensure good picture quality and real-time, although some data compression algorithms can be used,
But very large data volume is still will produce, this can bring huge pressure to network transmission, in complicated network environment
Under can not only occupy sizable network bandwidth, once there is the situations such as packet loss, delay, share desktop picture quality and reality in data
Shi Xinghui has a greatly reduced quality, especially under mobile network environment, bandwidth resources pretty valuable this become fatal disadvantage.
Invention content
In view of this, the embodiment of the present invention is designed to provide a kind of desktop area sharing method, system and corresponding
Shared end and viewing end, to improve the above problem.
The invention is realized in this way：
A kind of desktop area sharing method provided in an embodiment of the present invention carries out table applied between shared end and viewing end
Face district-share, including compression sending method reconciliation crimp receiving method, and the compression sending method includes：
Image acquisition step acquires entire desktop or the image in specified region, and acquisition every time obtains a reference frame；
Region of variation calculates step, and most freshly harvested image and any reference frame are compared, and obtains image change
Change region；
The image of entire desktop, the image in specified region or most freshly harvested image segmentation are more by image block step
A fritter, and it is divided into multiple regions；
Splits' positions step, the characteristics of according to each region in the multiple region, by the multiple region using not
Same compression method is compressed；
Compressed image data is sent to the viewing end by data sending step；
The decompression method of reseptance includes：
Data reception step receives multiple compressed image datas that shared end is sent；
Piecemeal depressurization steps decompress multiple compressed image datas using different decompressing methods；
Multiple regions caching after decompression is entire desktop picture or the figure that caching is region of variation by background caching step
Picture；
Displaying step is rendered, the desktop picture of caching is further rendered.
Preferably, it includes being respectively classified into the image of multiple reference frames and acquisition multiple that the region of variation, which calculates step,
Unit, then all units in the multiple reference frame and the image of the acquisition are compared, discrepant described more
A unit forms multiple variation zones, compares the size of the multiple variation zone, area minimum change area is the variation
The region of variation of area calculation step.
Preferably, described image blocking step includes, according to the difference of number of colors be divided into monochromatic areas, double-colored region,
Polychrome region.
Preferably, described image blocking step further includes that the multiple region is lossy compression region and lossless compression area
Domain.
Preferably, the splits' positions step includes that the size and Fill Color of the monochromatic areas using area replace
Pixel data reaches image data and is compressed, and the double-colored region is compressed using binaryzation, and a picture is indicated with a bit
When the color of element, the polychrome region is less than or is equal to 256 kinds, compressed using palette, the color in the polychrome region is big
When 256 kinds, compressed using JPEG (Joint Photographic Experts Group, joint photographic experts group).
Preferably, the splits' positions step includes that the lossy compression region uses JPEG compression, the lossless compression
It is compressed using ZIP in region.
Preferably, the data sending step includes in a desktop area shared period, sending entire table for the first time
The image data in face, other numbers sent send the data of the region of variation.
The shared end of one kind, with a viewing end communication connection, the shared end includes：
Image capture module, the image for acquiring entire desktop or specified region, every time acquisition obtain a reference frame；
Region of variation computing module obtains figure for comparing most freshly harvested image and any reference frame
As region of variation；
Image block module is used for the image of entire desktop, the image in specified region or most freshly harvested image segmentation
For multiple fritters, and it is divided into multiple regions；
The characteristics of for according to each region in the multiple region, the multiple region is adopted for splits' positions module
It is compressed with different compression methods；
Data transmission blocks, for compressed image data to be sent to the viewing end.
A kind of viewing end, with a shared end communication connection, the viewing end includes：
Data reception module, the multiple compressed image datas sent for receiving shared end；
Piecemeal decompression module, for decompressing multiple compressed image datas using different decompressing methods；
Background cache module is region of variation for caching the multiple regions after decompression for entire desktop picture or caching
Image；
Display module is rendered, for further rendering the desktop picture of caching.
A kind of desktop area shared system, including shared end and viewing end, the shared end and viewing end communication link
It connects, the shared end includes：
Image capture module, the image for acquiring entire desktop or specified region, every time acquisition obtain a reference frame；
Region of variation computing module obtains figure for comparing most freshly harvested image and any reference frame
As region of variation；
Image block module is used for the image of entire desktop, the image in specified region or most freshly harvested image segmentation
For multiple fritters, and it is divided into multiple regions；
The characteristics of for according to each region in the multiple region, the multiple region is adopted for splits' positions module
It is compressed with different compression methods；
Data transmission blocks, for compressed image data to be sent to the viewing end；
The viewing end includes：
Data reception module, the multiple compressed image datas sent for receiving shared end；
Piecemeal decompression module, for decompressing multiple compressed image datas using different decompressing methods；
Background cache module is region of variation for caching the multiple regions after decompression for entire desktop picture or caching
Image；
Display module is rendered, for further rendering the desktop picture of caching.
Compared with prior art, desktop area sharing method of the invention and system transmit for the first time entire desktop area or
The image of specified region (such as an application program) obtains region of variation after image and the reference frame comparison of subsequent acquisition, passes
The image data size of defeated region of variation is less than the image data size in entire desktop area or specified region, can reduce biography
Defeated data volume improves efficiency of transmission.
Moreover, the entire desktop area of first time transmission or specified region and region of variation are subjected to piecemeal, and
It is compressed by different compress modes for different piecemeals, not only can guarantee the quality of shared image, moreover it is possible to reduced and pass
Defeated size of data, occupy network bandwidth it is small, occur when network is bad packet loss, delay, shake the case where reduce, even if
At viewing end when cannot be decoded due to loss of data, some piecemeal can be asked to shared end by network control channel
Or reference frame, end is shared when receiving loss of data message, the region for watching end request can be sent again.
Desktop area sharing method and system provided in an embodiment of the present invention reduce bad Network status to picture quality
It influences, reduces the data of transmission, enhance the real-time of Image Sharing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the applied environment figure of desktop area shared system provided in an embodiment of the present invention；
Fig. 2 is the block diagram of desktop area shared system provided in an embodiment of the present invention；
Fig. 3 is the flow chart of desktop area sharing method provided in an embodiment of the present invention.
Main element symbol description：
Shared end 10；Watch end 20；Desktop area shared system 30；Image capture module 101；Region of variation computing module
102；Image block module 103；Splits' positions module 104；Data transmission blocks 105；Data reception module 201；Piecemeal decompresses
Module 202；Background cache module 203；Render display module 204.
Specific implementation mode
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Range, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
The every other embodiment obtained under the premise of going out creative work, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
As shown in Figure 1, being the applied environment figure of desktop area shared system provided in an embodiment of the present invention.The present invention is implemented
Example provides a kind of desktop area shared system, and this document shared system includes shared end 10 and viewing end 20, also, shares end 10
It is connected by network communication with viewing end 20, shared end 10 and viewing end 20 may each be PC (personal
Computer, PC), tablet computer, smart mobile phone, personal digital assistant (personal digital assistant, PDA)
Deng.
Shared end 10 and viewing end 20 have respectively further comprised processor and memory.Wherein, memory can be, but unlimited
In, random access memory (Random Access Memory, RAM), read-only memory (Read Only Memory, ROM),
Programmable read only memory (Programmable Read-Only Memory, PROM), erasable read-only memory
(Erasable Programmable Read-Only Memory, EPROM), electricallyerasable ROM (EEROM) (Electric
Erasable Programmable Read-Only Memory, EEPROM) etc..
Processor may be a kind of IC chip, the processing capacity with signal.Above-mentioned processor can be logical
With processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network
Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), application-specific integrated circuit (ASIC), ready-made programmable
Gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.It can be with
Realize or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor can be micro- place
It can also be any conventional processor etc. to manage device or the processor.
Memory can be used for storing software program and module, as the desktop area sharing method in the embodiment of the present invention with
And the corresponding program instruction/module of desktop area shared system, processor are stored in the software program in memory by operation
And module, to perform various functions application and data processing, the shared side of such as desktop area provided in an embodiment of the present invention
Method.
As shown in Fig. 2, being the block diagram of the shared file system of the embodiment of the present invention.Desktop area shared system 30
Including shared end 10 and viewing end 20, the shared end 10 is communicated to connect with the viewing end 20, and the shared end 10 includes：
Image capture module 101, the image for acquiring entire desktop or specified region, every time acquisition obtain a reference
Frame；
Region of variation computing module 102 is obtained for comparing most freshly harvested image and any reference frame
Image change region；
Image block module 103, for dividing the image of entire desktop, the image in specified region or most freshly harvested image
Multiple fritters are segmented into, and are divided into multiple regions；
Splits' positions module 104, the characteristics of for according to each region in the multiple region, by the multiple region
It is compressed using different compression methods；
Data transmission blocks 105, for compressed image data to be sent to the viewing end 20；
The viewing end 20 includes：
Data reception module 201, the multiple compressed image datas sent for receiving shared end 10；
Piecemeal decompression module 202, for decompressing multiple compressed image datas using different decompressing methods；
Background cache module 203 is variation for caching the multiple regions after decompression for entire desktop picture or caching
The image in region；
Display module 204 is rendered, for further rendering the desktop picture of caching.
Referring to Fig. 3, being the desktop provided in an embodiment of the present invention applied to desktop area shared system 30 shown in Fig. 2
The flow chart of district-share method.Detailed process shown in Fig. 3 will be described in detail below.
The embodiment of the present invention provides a kind of desktop area sharing method, including compression sending method reconciliation crimping receiving method,
The compression sending method includes：
Step S101 acquires entire desktop or the image in specified region, and acquisition every time obtains a reference frame；
It is acquired according to the demand at viewing end 20, such as watches end 20 and need to watch the image of entire desktop, then acquire whole
The image of a desktop area；If the image in specific region is only seen at viewing end 20, the image for specifying region is acquired, such as watch
20, end needs to watch the interface of an application program, then only acquires the interface image of the application program.
Most freshly harvested image and any reference frame are compared, obtain image change region by step S102；
During shared end 10 is to viewing 20 Desktop Share of end, for sharing entire desktop area image, due to
Acquire for the first time the image of entire desktop without reference to image, i.e. region of variation is the image of entire desktop；Subsequent acquisition mistake
Cheng Zhong, such as the image of second of acquisition are changed relative to the image of first time acquisition, then are compared by the operation of processor
The variation of the image of second of acquisition and the image of acquisition for the first time, and obtain corresponding region of variation；
Similarly, the image that third time acquires is relative to the image of first time acquisition and second of image acquired by change
Change, then the image of the image of third time acquisition and the image of first time acquisition, second of acquisition compares respectively, obtains two differences
Region of variation compare the sizes of the two different region of variation, choose the small region of variation of area and carry out step below
Suddenly.And the reference frame of selection (is chosen into the variation of the image of acquisition and the image of second of acquisition for the first time relative to third
The image of secondary acquisition is smaller) parameter as reference is sent to viewing end 20.
The image of third time acquisition and the image of acquisition for the first time, second acquisition specific compare of image can be with
Be the image of the image of first time acquisition, the image of second acquisition and third time acquisition is divided into multiple junior units, such as
The junior unit of 32*32 once compares a junior unit (32*32=1024 pixel), then again the image of third time acquisition
A region of variation is formed with the discrepant junior unit of image of first time acquisition, the image of third time acquisition is acquired with second
Image form another region of variation, the area for calculating this two region of variation can be respectively the area of all junior unit blocks
It adds up, compares the size of the two different region of variation, choose the small region of variation of area and shared.
The image of entire desktop, the image in specified region or most freshly harvested image segmentation are multiple small by step S103
Block, and it is divided into multiple regions；
Monochromatic areas, double-colored region, polychrome region can be divided into according to the difference of number of colors, it can also be according to viewing end
20 resolution requirements are divided into lossy compression region and lossless compression region.
Step S104, the characteristics of according to each region in the multiple region, by the multiple region using different
Compression method is compressed；
According to number of colors come subregion, entire desktop area or region of variation can be divided into several fritter, often
The pixel of a fritter is 256*128, and one piece is also divided into the region of the boundary deficiency piecemeal size in region.
Then the quantity of color in piecemeal is calculated, if only a kind of color illustrates it is that direct use of solid monochromatic areas should
The color and area size in region indicate this region, reach image data and are compressed；
Both colors are indicated with 0 and the 1 of a bit, if color there are two types of if that this region has
256*128=32768 pixel then only needs to indicate this with both color values and 32768/8=4096 byte
A region reaches image data and is compressed；
If number of colours is less than or is equal to 256 kinds, compressed using palette, 1 byte representation of each pixel；
If number of colours relatively mostly uses JPEG compression.
Wherein, it is just applicable in when the color of palette compression image is less than or equal to 256 kinds, toning version compression energy reduces data
Amount, for example, being respectively 200 pixels there are one length and width, the cromogram that color is 16 kinds, each pixel is indicated with R, G, B, because
There are 256 ranks for each component, is (bit) with 8, i.e. a byte representation, so each pixel needs 3 bytes,
And whole image 200*200*3 needs about 120k bytes, therefore image data amount can be reduced.
According to the resolution requirements at viewing end 20 come subregion, such as some teaching or screen meeting need the resolution ratio of image
Ask less high, and as remote operation of medicine etc. needs higher resolution ratio；ZIP is used for the high region of image quality requirements
Equal lossless compressions and region that image quality requires slightly lower requirement of real-time high uses JPEG compression.
Compressed image data is sent to the viewing end 20 by step S105；
Data transmission not only may be implemented, data transmission speed, adjustment sample rate can also be adjusted according to network state simultaneously
And feedback network state, it is of course also possible to which multiple compressed images are transmitted.
Decompression method of reseptance is the inverse process for compressing sending method.
The decompression method of reseptance includes：
Step S106 receives multiple compressed image datas that shared end 10 is sent；
The procotol used in transmission according to step S105 is received, if the multiple compressed images sent are logical
It is retransmited after crossing packing, then needs to unpack after receiving.
Step S107 decompresses multiple compressed image datas using different decompressing methods；
If for example, include monochromatic areas, double-colored region and to polychrome region after multiple compressed image datas decompression,
It then corresponds to respectively to monochromatic areas, double-colored region in step S104 and corresponding mode is carried out to the compression method in polychrome region
Decompression；If multiple compressed image datas are compressed by ZIP compressions and JPEG compression, corresponding to pass through ZIP
Decompression and jpeg decompression.
Multiple regions caching after decompression is entire desktop picture or the image that caching is region of variation by step S108；
During watching end 20 and receiving the Desktop Share for sharing end 10, for sharing entire desktop, connect for the first time
What is received is the image of entire desktop area, and it is entire desktop area iconic model to cache.What is received after this is all altogether
The image for the region of variation that end 10 is sent is enjoyed, viewing end 20 can receive the reference frame of this region of variation, compare reference frame simultaneously
The desktop picture model that newest reception is established with region of variation, can so reduce the transmission quantity of image data.
Step S109 further renders the desktop picture of caching.
The iconic model that step S108 is established further is rendered, such as GDI (Graphics Device can be passed through
Interface it) is rendered with the tools such as OpenGL (Open Graphics Library), obtains shared end 10 and need to send
Image complete, clearly image, in viewing 20 user of end viewing.
GDI is meant that graphical device interface, its main task is responsible for the friendship of the information between system and mapping program
It changes, handles the images outputting of all Windows programs.
OpenGL is to define a graphic package across programming language, the profession of cross-platform programming interface specification to connect
Mouthful.It is one powerful, calls convenient underlying graphics library for 3-D view (two-dimensional also can).
Shared end 10 can will transmit image block and be compressed by different compress modes, and only transmit region of variation
Image data, occupy network bandwidth it is small, under conditions of current network congestion, it is ensured that the stability and efficiency of transmission.
It is small and serious in packet loss, delay, shake to occupy network bandwidth for the image for watching the 20 reception region of variation in end
Network environment under, the influence area that generates every time is reduced, and watches end 20 when cannot be decoded due to loss of data,
Some piecemeal or reference frame can be asked to shared end by network control channel, share end when receiving loss of data message
The region that end 20 is asked can will be watched to send again.
Desktop area sharing method and system provided in an embodiment of the present invention reduce bad Network status to picture quality
It influences, reduces the data of transmission, enhance the real-time of Image Sharing.
In several embodiments provided herein, it should be understood that disclosed device and method can also pass through
Other modes are realized.The apparatus embodiments described above are merely exemplary, for example, the flow chart in attached drawing and block diagram
Show the device of multiple embodiments according to the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.In this regard, each box in flowchart or block diagram can represent the one of a module, section or code
Part, a part for the module, section or code, which includes that one or more is for implementing the specified logical function, to be held
Row instruction.It should also be noted that at some as in the realization method replaced, the function of being marked in box can also be to be different from
The sequence marked in attached drawing occurs.For example, two continuous boxes can essentially be basically executed in parallel, they are sometimes
It can execute in the opposite order, this is depended on the functions involved.It is also noted that every in block diagram and or flow chart
The combination of box in a box and block diagram and or flow chart can use function or the dedicated base of action as defined in executing
It realizes, or can be realized using a combination of dedicated hardware and computer instructions in the system of hardware.
In addition, each function module in each embodiment of the present invention can integrate to form an independent portion
Point, can also be modules individualism, can also two or more modules be integrated to form an independent part.
It, can be with if the function is realized and when sold or used as an independent product in the form of software function module
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.It needs
Illustrate, herein, relational terms such as first and second and the like be used merely to by an entity or operation with
Another entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this realities
The relationship or sequence on border.Moreover, the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes
Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, article or equipment in there is also other identical elements.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and is explained.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. a kind of desktop area sharing method, progress desktop area is shared between being applied to shared end and watching end, and feature exists
In, including sending method reconciliation crimping receiving method is compressed, the compression sending method includes：
Image acquisition step acquires entire desktop or the image in specified region, and acquisition every time obtains a reference frame；
Region of variation calculates step, and the image of multiple reference frames and acquisition is respectively classified into multiple units, then by the multiple ginseng
All units examined in frame and the image of the acquisition are compared, and discrepant the multiple unit is formed multiple variations
Area compares the size of the multiple variation zone, obtains area minimum change area；
The image of entire desktop or area minimum change differentiation are segmented into multiple fritters, and are divided into more by image block step
A region；
Splits' positions step, the characteristics of according to each region in the multiple region, by the multiple region using different
Compression method is compressed；
Compressed image data is sent to the viewing end by data sending step；
The decompression method of reseptance includes：
Data reception step receives multiple compressed image datas that shared end is sent；
Piecemeal depressurization steps decompress multiple compressed image datas using different decompressing methods；
Background caching step, by the multiple regions caching after decompression be entire desktop picture or caching is the area minimum change
Area；
Displaying step is rendered, the desktop picture of caching is further rendered.
2. desktop area sharing method according to claim 1, which is characterized in that described image blocking step includes root
It is divided into monochromatic areas, double-colored region, polychrome region according to the difference of number of colors.
3. desktop area sharing method according to claim 1, which is characterized in that described image blocking step further includes,
The multiple region is lossy compression region and lossless compression region.
4. desktop area sharing method according to claim 2, which is characterized in that the splits' positions step includes institute
It states the size of monochromatic areas using area and Fill Color reaches image data instead of pixel data and compressed, the double-colored area
Domain is compressed using binaryzation, indicates that a pixel, the color in the polychrome region are less than or are equal to 256 kinds with a bit
When, it is compressed using palette, when the color in the polychrome region is more than 256 kinds, using JPEG (Joint Photographic
Experts Group, joint photographic experts group) compression.
5. desktop area sharing method according to claim 3, which is characterized in that the splits' positions step includes institute
Stating lossy compression region uses JPEG compression, the lossless compression region to be compressed using ZIP.
6. desktop area sharing method according to claim 1, which is characterized in that the data sending step includes one
In a desktop area shared period, the image data of entire desktop is sent for the first time, other numbers sent send the change
Change the data in region.
7. the shared end of one kind, with a viewing end communication connection, which is characterized in that the shared end includes：
Image capture module, the image for acquiring entire desktop or specified region, every time acquisition obtain a reference frame；
Region of variation computing module, for the image of multiple reference frames and acquisition to be respectively classified into multiple units, then will be described more
All units in a reference frame and the image of the acquisition are compared, and discrepant the multiple unit is formed multiple changes
Change area, compares the size of the multiple variation zone, obtain area minimum change area；
Image block module for the image of entire desktop or area minimum change differentiation to be segmented into multiple fritters, and is divided
For multiple regions；
Splits' positions module, the characteristics of for according to each region in the multiple region, by the multiple region using not
Same compression method is compressed；
Data transmission blocks, for compressed image data to be sent to the viewing end.
8. a kind of viewing end, with a shared end communication connection, which is characterized in that the viewing end includes：
Data reception module, the multiple compressed image datas sent for receiving shared end, the multiple compressed figure
The image of entire desktop or area minimum change are distinguished by the shared end as data and are segmented into multiple fritters, and is divided into multiple areas
Behind domain, the characteristics of according to each region in the multiple region, the multiple region is carried out using different compression methods
Compression obtains；
Piecemeal decompression module, for decompressing multiple compressed image datas using different decompressing methods；
Background cache module is that the area is minimum for caching the multiple regions after decompression for entire desktop picture or caching
Variation zone；
Display module is rendered, for further rendering the desktop picture of caching.
9. a kind of desktop area shared system, which is characterized in that including shared end and viewing end, the shared end and the viewing
End communication connection, the shared end includes：
Image capture module, the image for acquiring entire desktop or specified region, every time acquisition obtain a reference frame；
Region of variation computing module, for the image of multiple reference frames and acquisition to be respectively classified into multiple units, then will be described more
All units in a reference frame and the image of the acquisition are compared, and discrepant the multiple unit is formed multiple changes
Change area, compares the size of the multiple variation zone, obtain area minimum change area；
Image block module for the image of entire desktop or area minimum change differentiation to be segmented into multiple fritters, and is divided
For multiple regions；
Splits' positions module, the characteristics of for according to each region in the multiple region, by the multiple region using not
Same compression method is compressed；
Data transmission blocks, for compressed image data to be sent to the viewing end；
The viewing end includes：
Data reception module, the multiple compressed image datas sent for receiving shared end；
Piecemeal decompression module, for decompressing multiple compressed image datas using different decompressing methods；
Background cache module is that the area is minimum for caching the multiple regions after decompression for entire desktop picture or caching
Variation zone；
Display module is rendered, for further rendering the desktop picture of caching.
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| CN107623657A (en) * | 2016-07-13 | 2018-01-23 | 南京中兴新软件有限责任公司 | media data transmission method, device and terminal |
| CN107145340B (en) * | 2017-03-22 | 2020-10-27 | 深信服科技股份有限公司 | Virtual desktop image transmission method and device |
| CN109150945B (en) * | 2017-06-28 | 2021-07-02 | 深圳联友科技有限公司 | Method and system for sharing picture in real time |
| CN107450876A (en) * | 2017-08-11 | 2017-12-08 | 河南羲和网络科技股份有限公司 | A kind of same screen information synchronization method |
| CN107613370B (en) * | 2017-10-27 | 2020-08-14 | 烟台北方星空自控科技有限公司 | Method for realizing local area network screen sharing by adopting screen capture image |
| CN108021347A (en) * | 2017-12-29 | 2018-05-11 | 航天科工智慧产业发展有限公司 | A kind of method of Android terminal Screen sharing |
| CN108259808B (en) * | 2018-01-31 | 2021-01-08 | 维沃移动通信有限公司 | Video frame compression method and mobile terminal |
| CN108334412A (en) * | 2018-02-11 | 2018-07-27 | 沈阳东软医疗系统有限公司 | A kind of method and apparatus of display image |
| CN108419029A (en) * | 2018-05-07 | 2018-08-17 | 威创集团股份有限公司 | A kind of spelling wall image transfer method and device |
| CN111405071A (en) * | 2020-06-02 | 2020-07-10 | 广东睿江云计算股份有限公司 | Cloud desktop based picture transmission method and system |
| CN111708505B (en) * | 2020-07-21 | 2021-01-01 | 全时云商务服务股份有限公司 | Desktop sharing method and device and electronic equipment |
| CN112565670B (en) * | 2021-02-22 | 2021-05-11 | 全时云商务服务股份有限公司 | Method for rapidly and smoothly drawing multi-layer video of cloud conference |
| CN112565671A (en) * | 2021-02-25 | 2021-03-26 | 全时云商务服务股份有限公司 | Conference information capturing method and device in desktop sharing and readable storage medium |
| CN113885980B (en) * | 2021-09-24 | 2023-10-24 | 北京航天新立科技有限公司 | Desktop sharing method and system based on local area network |
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| US8891939B2 (en) * | 2009-12-22 | 2014-11-18 | Citrix Systems, Inc. | Systems and methods for video-aware screen capture and compression |
| CN101977322A (en) * | 2010-11-10 | 2011-02-16 | 上海交通大学 | Screen coding system based on universal video coding standard |
| CN102523367B (en) * | 2011-12-29 | 2016-06-15 | 全时云商务服务股份有限公司 | Real time imaging based on many palettes compresses and method of reducing |
| CN102821278B (en) * | 2012-07-27 | 2015-03-11 | 深信服网络科技（深圳）有限公司 | Remote desktop image transmission method and remote desktop image transmission system |
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