CN105681791B - Self-adapted remote desktop transmission method and system - Google Patents
Self-adapted remote desktop transmission method and system Download PDFInfo
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- CN105681791B CN105681791B CN201610031112.2A CN201610031112A CN105681791B CN 105681791 B CN105681791 B CN 105681791B CN 201610031112 A CN201610031112 A CN 201610031112A CN 105681791 B CN105681791 B CN 105681791B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/136—Incoming video signal characteristics or properties
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/142—Detection of scene cut or scene change
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
- H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
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Abstract
The invention discloses a kind of self-adapted remote desktop transmission method and system, wherein method is the following steps are included: coding side collecting computer desktop original image and replicating and a carrying out still image processing and moving picture encoding respectively；Still image processing is specially to carry out piecemeal to input picture and detect to change block, and it is dynamic image that this frame is marked if being more than threshold value if variation number of blocks, and it is static frames that otherwise record, which changes block coordinate and image data and marks this frame,；Moving picture encoding is specially to carry out Video coding to input picture；Decoding end is transmitted through the network to after selecting corresponding code stream and package according to the frame type of label；Decoding end carries out respective handling according to input code flow type and shows the video frame that final decoding comes out.The present invention detects every frame image, adaptively selected encryption algorithm, has both the effect for reducing transmission code stream and guaranteeing good image quality and response sensitivity.
Description
Technical field
The present invention relates to remote desktop transmission technique fields, and in particular to a kind of self-adapted remote desktop transmission method be
System.
Background technique
Computer desktop media data includes that the multimedia display datas such as traditional image, video also include application program circle
The compound display data of the texts such as face, graphical content.It should focus on fluency and real-time under video environment, and in text environments
It should focus on the quality of image and the sensitivity of operation down.And currently used Remote Desktop Protocol is not very to video tastes effect
It is good, it is only applicable to static text and general figures occasion, first is that used compression algorithm is not appropriate for compressing in the case of video, two
Being that compression efficiency is not high causes data volume very big.It, then will under static text operational circumstances as used video compression algorithm completely
Compression is significantly greatly increased and also results in image quality decrease with the decoded processing time.
Summary of the invention
The main object of the present invention is to provide a kind of self-adapted remote desktop transmission method, it is intended under compatible dynamic video compared with
Small code stream, and can have good image quality and response spirit in relative quiescents such as text editing, mouse actions
Sensitivity.
To achieve the above object, the technical scheme adopted by the invention is that:
A kind of self-adapted remote desktop transmission method is provided, comprising the following steps:
Step S01, coding side collecting computer desktop original image and replicate it is a carry out respectively still image processing and
Moving picture encoding；Still image processing is specially to carry out piecemeal to input picture and detect variation block, if variation number of blocks
It is dynamic image that this frame is then marked more than threshold value, and otherwise record changes block coordinate and image data and marks this frame for static state
Frame；Moving picture encoding is specially to carry out Video coding to input picture；Corresponding code stream is selected according to the frame type of label and is sealed
Decoding end is transmitted through the network to after packet；
Step S02, decoding end carries out respective handling according to input code flow type, if static coding code stream, then according to change
Change block position and the former frame that changing content covers preservation is shown into data；If dynamic coding code stream, then video decoding is carried out
And the former frame for overriding preservation shows data, and shows the video frame that final decoding comes out.
In method of the present invention, the step S01 specifically includes the following steps:
Collecting computer desktop original image replicates a progress still image processing respectively after carrying out color space conversion
And moving picture encoding；
Still image processing carries out piecemeal to input picture with specific reference to piecemeal rule, carries out point-by-point pixel to each piecemeal
Compare and detect variation block, it is dynamic image that this frame is marked if being more than threshold value if variation number of blocks, otherwise record variation block coordinate
And image data and mark this frame be static frames, while save this frame as next frame variation block detect reference；
Moving picture encoding specifically carries out Video coding to input picture, and video encoding standard used is MJPEG；
It selects dynamic coding code stream or static coding code stream to carry out package according to the frame type of label and is reached by network
Decoding end.
In method of the present invention, the step S02 specifically includes the following steps:
Encoding stream is received by network, and judges code stream type；
If static coding code stream, then the information such as variation block position are parsed by block image data is changed and cover preservation
Former frame shows image corresponding position；
If dynamic coding code stream, then video decoding is carried out, the video encoding standard used overrides guarantor for MJPEG
The former frame deposited shows image；
The picture frame feeding image display come will be decoded to show, and cache shown picture frame.
In method of the present invention, the coding side all carries out sound state differentiation, while institute to each frame input picture
State coding side moving picture encoding and the parallel progress of still image processing.
In method of the present invention, the network transmission of coding side takes out coded data by the time sequencing of video frame, with
It avoids because dynamic and static processing Time Inconsistency causes frame out-of-order, specific steps include:
The video frame that moving picture encoding and the still image processing of coding side obtain has identical time stamp, in addition static
Image procossing safeguards one<timestamp, the queue of frame type>data pair；
Coding side is in network transmission, the successively acquisition<timestamp from queue, frame type>data pair, orderly from dynamic
Treated code stream is obtained in image coding result buffer area or still image processing result buffer area.
The present invention also provides a kind of self-adapted remote desktop image transmission systems, comprising:
Coding side for collecting computer desktop original image and replicates a progress still image processing and dynamic respectively
Image coding；Still image processing is specially to carry out piecemeal to input picture and detect variation block, if variation number of blocks is more than
It is dynamic image that threshold value, which then marks this frame, and it is static frames that otherwise record, which changes block coordinate and image data and marks this frame,；It is dynamic
State image coding is specially to carry out Video coding to input picture；Lead to after selecting corresponding code stream and package according to the frame type of label
It crosses network transmission module and reaches decoding end；
Decoding end, for carrying out respective handling according to input code flow type, if static coding code stream, then according to variation block
The former frame that changing content covers preservation is shown data by position；If dynamic coding code stream, then carries out video decoding and cover
The former frame that lid falls preservation shows data, and shows the video frame that final decoding comes out.
In system of the present invention, the coding side is specifically included:
Image capture module exports desktop picture for collecting computer, carries out color space conversion, while replicating portion
Image data is respectively fed to the still image processing module and moving picture encoding resume module；
Still image processing module detects variation block, according to variation block number for carrying out piecemeal to desktop picture data
Amount marks this frame type, while recording variation block position and image data, saves this frame as next frame variation block detection
With reference to；
Moving picture encoding module, for carrying out Video coding, accepted standard MJPEG to input desktop picture；
Network transmission module is successively compiled from still image processing result buffer area or dynamic image by video frame time sequence
Code result data buffer area obtains coded data network transmission to decoding end.
In system of the present invention, the still image processing module be also used to record every frame image < timestamp, frame
Type > data pair reads dynamic or static coding stream by video frame time sequence for network transmission module.
In system of the present invention, the decoding end is specifically included:
Network transmission module, for receiving compression end transmitted stream, and it is quiet according to the code stream type feeding decoding end
State image processing module or moving image decoding module are handled, while recording coding video frames stream correspondence < timestamp, frame class
Type > data pair；
Moving image decoding module, for input code flow carry out video decoding, the video encoding standard used for
MJPEG；
Image data for parsing variation block location information, and is covered the previous of preservation by still image decoder module
Frame image corresponding position；
Image display, for be successively read decoding end record<timestamp, frame type>data pair, from dynamic
Image decoding result buffer or static treatment result buffer are read video frame and are shown.
The beneficial effect comprise that: the present invention is carried out in every frame computer desktop image of the coding side to input
Sound state is distinguished, and is sent to decoding end decoding, decoding end according to the adaptively selected encoding stream of variation block size or static coding stream
According to the coding stream type received, decodes desktop picture data using corresponding either statically or dynamically decoding policy and show.This
Invention provides not only good long-distance video playing fluency, while keeping under the quiescent conditions such as text editing, mouse action
Excellent sensitivity and image quality, the user experience is improved, obtain better remote desktop image transmitting effect.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is a kind of one embodiment flow diagram of self-adapted remote desktop image transmission method of the present invention；
Fig. 2 is that coding side described in a kind of self-adapted remote desktop image transmission method of the present invention handles block schematic illustration；
Fig. 3 is that decoding end described in a kind of self-adapted remote desktop image transmission method of the present invention handles block schematic illustration；
Fig. 4 is a kind of self-adapted remote desktop image transmission system embodiment structural schematic diagram of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Referring to Fig.1, Fig. 1 is a kind of one embodiment flow diagram of self-adapted remote desktop image transmission method of the present invention,
The following steps are included:
Step S01, coding side collecting computer desktop original image replicate after color space conversion it is a simultaneously into
Row still image coding and moving picture encoding, still image coding carry out piecemeal to input frame and detect variation block, work as change
Changing number of blocks is more than that threshold value then marks this frame for dynamic image, and otherwise record changes block coordinate and image data and marks this frame
For static frames, moving picture encoding carries out Video coding to input frame, finally selects static coding code stream according to frame type or moves
Solution pressure side is reached by network transmission module after state Video coding code stream and package.
Step S02, decoding end carries out respective handling according to input code flow type, if static coding code stream then according to variation
The former frame that changing content covers preservation is shown data by the information such as block position；If dynamic coding code stream, then carry out corresponding
Video decodes and overrides the former frame display data of preservation, and it is aobvious that the video frame that final decoding comes out can be sent into image display
Show.
It is one embodiment of coding side described in a kind of self-adapted remote desktop image transmission method of the present invention referring to Fig. 2, Fig. 2
Flow diagram, comprising the following steps:
Step S11, collecting computer desktop picture data carry out color space conversion, and replicate portion, tag image frame
Acquisition time stamp；
Computer desktop raw image data is rgb format, and subsequent moving picture encoding is yuv format, therefore advanced
Row color space conversion；This image data is replicated into portion, portion is used for step S12, and portion is used for step S13, so that two kinds
Mode can with parallel processing, meanwhile, two parts of image datas all retain unified acquisition time stamp, can as the mark of frame sequential
Prevent that the taken coding mode of before and after frames is different and institute it is time-consuming it is inconsistent caused by frame sequential entanglement.
Step S12, moving picture encoding, coded data are put into compressed encoding buffer area, and maintain label acquisition when
Between stab；Moving picture encoding uses MJPEG coding standard, but not limited to this coding standard；
Step S13, piecemeal is carried out to image, compares former frame, record that each variation block is wide, high, origin coordinates；
Image block does not distinguish picture material, divides the image into size 16*16's by zigzag mode using uniform rules
Fritter, insufficient size press actual block size.The former frame same block of present frame and preservation is compared in such a way that two frames subtract each other,
When certain pixel value is more than that threshold value then records width, the height of this block top left corner pixel point origin coordinates and block in certain block, then
Carry out next piece of comparison.
Step S14, judge to change whether number of blocks is less than threshold value, the implementation steps S15 if being not less than, otherwise implementation steps
S16；
Step S15, marking this frame is dynamic image, obtains the acquisition time stamp marked in the step S11, records this frame
Correspondence<acquisition time stamp, frame type>data pair, by this data to entering frame information queue.
Step S16, according to the variation block message of record, respective image data is copied to uncompressed encoding buffer, label
This frame is still image, records this frame correspondence<timestamp, frame type>data pair；
According to the variation block message recorded in the step S13, copy each variation block position desktop picture data block with
And change block message to uncompressed encoding buffer, and maintain the acquisition time stamp of label；Marking this frame is still image, simultaneously
The acquisition time stamp marked in the step S11 is obtained, this frame correspondence<timestamp, frame type>data pair, by this data are recorded
To entering frame information queue；
Step S17, the reference that present frame is detected as next frame image change block is saved；
Step S18, one<timestamp is obtained from frame information queue, frame type>data pair selects correct encoding stream
It is sent to decoding end；
Successively read from frame information queue the step S15 and the step S16 record<timestamp, frame type>
Data pair read coded data, while root from compressed encoding stream or uncompressed coding streambuf according to the selection of frame type
Correct image encoding stream can be selected from selected coding streambuf according to timestamp, without the random ordering between frame；
Fig. 3 is one embodiment process of decoding end signal described in a kind of self-adapted remote desktop image transmission method of the present invention
Figure, comprising the following steps:
Step S21, encoding stream is received, while maintaining a frame information queue, records the timestamp and frame type of picture frame；
Step S22, moving image decoding, coded data are put into compressed encoding buffer area, and maintain the timestamp of label；
Step S23, one<timestamp is obtained from frame information queue, frame type>data pair judges whether it is static place
Frame is managed, if not static frames then implementation steps S24, otherwise implementation steps S25；
Step S24, the corresponding image for decoding out of current time stamp is obtained；
Step S25, uncompressed encoded data stream is parsed, each variation block initial position, width, height are obtained, by the number of variation
According to covering previous display frame；
Step S26, current display frame is saved, and is sent into display equipment and shows；
It is a kind of self-adapted remote desktop image transmission system embodiment structural schematic diagram of the present invention referring to Fig. 4, Fig. 4；It compiles
A still image that carries out respectively of duplication handles mould after code 00 collecting computer desktop original image of end carries out color space conversion
Block 02 and moving picture encoding module 03, still image processing is to input frame piecemeal and detects variation block, according to variation block number
Amount marks this frame type, while recording variation block position and image data, and moving picture encoding module 03 carries out input frame
Video coding reaches solution pressure side 05 by network transmission module 04 according to after the corresponding code stream of frame type selection and package.
The decoding end judges input coding stream type, will then be become according to information such as variation block positions if static coding stream
Change the former frame display data that content covers preservation, video decoding is then carried out if moving picture encoding stream and overrides preservation
Former frame show data；It is decoded described in display and carrys out image.
The coding side 00 specifically includes:
Image capture module 01 exports desktop picture by 011 collecting computer of image acquisition units, becomes through color space
It changes after unit 012 carries out color space conversion and replicates a image data, be respectively fed to still image processing module 02 and move
The processing of state image coding module 03；
Still image processing module 02, frame change detection unit 021 and carry out piecemeal to desktop picture data, detect to change
Block marks this frame type according to variation number of blocks, and variation block number records variation block position and picture number according to packet element 022
According to, and save this frame and change the reference detected fastly as next frame；The record of frame information recording unit 023 inputs each frame figure simultaneously
As correspondence<timestamp, frame type>data pair；
Moving picture encoding module 03 carries out Video coding to input desktop picture, uses standard for MJPEG；
Network transmission module 04, code stream selection unit 041 according to the data of the record to by video frame time sequence according to
It is secondary to obtain coded data from still image processing result buffer area or moving picture encoding result data buffer area and pass through network
Transmission unit 042 is transmitted to decoding end 05；
The decoding end 05 specifically includes:
Network transmission module 06, network receiving unit 061 receive coding side transmitted stream, are sent into institute according to code stream type
It states decoding end still image processing module 07 or moving image decoding module 08 is handled, while frame information recording unit 062
Record coding video frames stream correspondence<timestamp, frame type>data pair；
Still image decoder module 07, parsing variation block location information, before variation block image data is covered preservation
One frame image corresponding position；
Moving image decoding module 08 carries out video decoding to input code flow, uses standard for MJPEG；
Image display 09, decoding data selecting unit 091 be successively read decoding end record < timestamp, frame
Type > data pair reads video frame from moving image decoding result buffer or static treatment result buffer, through color space
Feeding image-display units are shown after change unit 092 is converted to rgb format.
To sum up, the present invention carries out sound state differentiation to every frame computer desktop image is inputted in coding side, while parallel
Carry out moving picture encoding and still image handle, according to the adaptively selected MJEPG encoding stream of variation block size or static compile
Code stream is sent to decoding end decoding, at the same according to record<timestamp, frame type>data are to can ensure that the suitable coding of selection
It flows and is successively sent by original video frame time sequencing；Decoding end is according to coding stream type is received, using corresponding static or dynamic
State decoding policy decodes desktop picture data and shows.The present invention provides not only good long-distance video playing fluency, together
When maintain excellent sensitivity and image quality under the quiescent conditions such as text editing, mouse action, the user experience is improved, obtains
Obtained better remote desktop image transmitting effect.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of self-adapted remote desktop transmission method, which comprises the following steps:
Step S01, it coding side collecting computer desktop original image and replicates and a carries out still image processing and dynamic respectively
Image coding；Still image processing is specially to carry out piecemeal to input picture and detect variation block, if variation number of blocks is more than
It is dynamic image that threshold value, which then marks this frame, and it is static frames that otherwise record, which changes block coordinate and image data and marks this frame,；It is dynamic
State image coding is specially to carry out Video coding to input picture；Lead to after selecting corresponding code stream and package according to the frame type of label
Network transmission is crossed to decoding end；
Step S02, decoding end carries out respective handling according to input code flow type, if static coding code stream, then according to variation block
The former frame that changing content covers preservation is shown data by position；If dynamic coding code stream, then carries out video decoding and cover
The former frame that lid falls preservation shows data, and shows the video frame that final decoding comes out.
2. the method as described in claim 1, which is characterized in that the step S01 specifically includes the following steps:
Collecting computer desktop original image replicates a progress still image processing respectively after carrying out color space conversion and moves
State image coding；
Still image processing carries out piecemeal to input picture with specific reference to piecemeal rule, carries out point-by-point pixel to each piecemeal and compares
Detect variation block, if variation number of blocks be more than threshold value if mark this frame be dynamic image, otherwise record variation block coordinate and
Image data simultaneously marks this frame for static frames, while saving reference of this frame as next frame variation block detection；
Moving picture encoding specifically carries out Video coding to input picture, and video encoding standard used is MJPEG；
It selects dynamic coding code stream or static coding code stream to carry out package according to the frame type of label and decoding is reached by network
End.
3. the method as described in claim 1, which is characterized in that the step S02 specifically includes the following steps:
Encoding stream is received by network, and judges code stream type；
If static coding code stream, then parse variation block location information, and will variation block image data cover preservation before
One frame shows image corresponding position；
If dynamic coding code stream, then video decoding is carried out, the video encoding standard used overrides preservation for MJPEG
Former frame shows image；
The picture frame feeding image display come will be decoded to show, and cache shown picture frame.
4. method according to claim 2, which is characterized in that the coding side all carries out sound state to each frame input picture
It distinguishes, while the coding side moving picture encoding and the parallel progress of still image processing.
5. method according to claim 2, which is characterized in that the network transmission of coding side is taken out by the time sequencing of video frame
Coded data, to avoid because dynamic and static processing Time Inconsistency causes frame out-of-order, specific steps include:
The video frame that moving picture encoding and the still image processing of coding side obtain has identical time stamp, in addition still image
Processing one<timestamp of maintenance, the queue of frame type>data pair；
Coding side is in network transmission, the successively acquisition<timestamp from queue, frame type>data pair, orderly slave dynamic image
Treated code stream is obtained in coding result buffer area or still image processing result buffer area.
6. a kind of self-adapted remote desktop image transmission system characterized by comprising
Coding side for collecting computer desktop original image and replicates a progress still image processing and dynamic image respectively
Coding；Still image processing is specially to carry out piecemeal to input picture and detect variation block, if variation number of blocks is more than threshold value
Then marking this frame is dynamic image, and it is static frames that otherwise record, which changes block coordinate and image data and marks this frame,；Dynamic Graph
As coding is specially to carry out Video coding to input picture；Pass through net after selecting corresponding code stream and package according to the frame type of label
Network transmission module reaches decoding end；
Decoding end, for carrying out respective handling according to input code flow type, if static coding code stream, then according to variation block position
The former frame that changing content covers preservation is shown into data；If dynamic coding code stream, then carries out video decoding and override
The former frame of preservation shows data, and shows the video frame that final decoding comes out.
7. system as claimed in claim 6, which is characterized in that the coding side specifically includes:
Image capture module exports desktop picture for collecting computer, carries out color space conversion, while replicating a image
Data are respectively fed to the still image processing module and moving picture encoding resume module；
Still image processing module detects variation block, according to variation number of blocks mark for carrying out piecemeal to desktop picture data
Remember this frame type, while recording variation block position and image data, saves reference of this frame as next frame variation block detection；
Moving picture encoding module, for carrying out Video coding, accepted standard MJPEG to input desktop picture；
Network transmission module, by video frame time sequence successively from still image processing result buffer area or moving picture encoding knot
Fruit data buffer zone obtains coded data network transmission to decoding end.
8. system as claimed in claim 7, which is characterized in that the still image processing module is also used to record every frame image
<timestamp, frame type>data pair, for network transmission module by video frame time sequence reading dynamic or static coding stream.
9. system as claimed in claim 6, which is characterized in that the decoding end specifically includes:
Network transmission module is sent into the decoding end static map for receiving coding side transmitted stream, and according to code stream type
As decoder module or moving image decoding module are handled, while coding video frames stream correspondence<timestamp is recorded, frame type>
Data pair；
Moving image decoding module, for carrying out video decoding to input code flow, the video encoding standard used is MJPEG；
Still image decoder module changes block location information for parsing, and image data is covered to the former frame figure of preservation
As corresponding position；
Image display, for be successively read decoding end record<timestamp, frame type>data pair, from dynamic image
Decoding result buffer area or static treatment result buffer are read video frame and are shown.
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