CN105681791A - Self-adaptive remote desktop transmission method and system - Google Patents
Self-adaptive remote desktop transmission method and system Download PDFInfo
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- CN105681791A CN105681791A CN201610031112.2A CN201610031112A CN105681791A CN 105681791 A CN105681791 A CN 105681791A CN 201610031112 A CN201610031112 A CN 201610031112A CN 105681791 A CN105681791 A CN 105681791A
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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 self-adaptive remote desktop transmission method and system, wherein the method comprises the following steps that: a coding end acquires an original image of a computer desktop and creates one duplicate to respectively perform static image processing and dynamic image coding; the static image processing comprises the following specific steps of: blocking an input image, detecting changed blocks, marking a frame as a dynamic image if the number of the changed blocks is greater than a threshold value, otherwise, recording the coordinates of the changed blocks and image data, and marking the frame as a static frame; and the dynamic image coding comprises the following specific steps of: performing video coding of the input image; selecting a corresponding code stream according to the marked frame type and transmitting to a decoding end through a network after encapsulating; and correspondingly processing by the decoding end according to the input code stream type, and displaying the finally decoded video frame. According to the invention, each frame of image is detected; coding algorithms are selected self-adaptively; and the effects of reducing the transmission code stream and ensuring the good picture quality and the response sensitivity are integrated.
Description
Technical field
The present invention relates to long-range desktop transmission technique field, it is specifically related to a kind of self-adapted remote desktop transmission method and system.
Background technology
Computer desktop media data comprises the display data that the multimedia display data such as traditional image, video also comprise the texts such as Application Program Interface, graphical content compound. Fluency and real-time should be focused under video environment, and the quality of image and the sensitivity of operation should be focused under text environments. And video tastes effect is not fine by long-range desktop agreement conventional at present, being only applicable to static text and general figures occasion, one is compression under being adopted compression algorithm and being not suitable for video situation, and two is that manometric efficiency is not high causes data volume very big. As adopted video compress algorithm completely, then under static text operational circumstances, cause image quality decrease by greatly increasing compression with the treatment time decoded simultaneously.
Summary of the invention
The main purpose of the present invention is to provide a kind of self-adapted remote desktop transmission method, it is intended to code stream less under compatible dynamic video, and can have good picture quality and response sensitivity in the relative quiescent situations such as text editor, mouse operation.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of self-adapted remote desktop transmission method is provided, comprises the following steps:
Step S01, coding side collecting computer desktop original image and copy one part and carry out static image procossing and moving picture encoding respectively; Static image procossing is specially and input picture is carried out piecemeal and detects out change block, if change number of blocks exceedes threshold value, marking this frame is dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames; Moving picture encoding is specially and input picture is carried out video coding; According to mark the corresponding code stream of frame type selecting and be transmitted through the network to decoding end after package;
Step S02, decoding end carry out respective handling according to input code flow type, if static encoding code stream, then changing content cover according to change block position the former frame display data of preservation;If dynamic encoding code stream, then carry out video decode and override the former frame display data of preservation, and show finally decoding frame of video out.
In method of the present invention, described step S01 specifically comprises the following steps:
Collecting computer desktop original image copies one part and carries out static image procossing and moving picture encoding respectively after carrying out color space conversion;
Input picture is specifically carried out piecemeal according to piecemeal rule by static image procossing, each piecemeal is carried out pointwise pixel ratio and relatively detects out change block, if change number of blocks exceedes threshold value, marking this frame is dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames, preserve the reference that this frame changes block detection as next frame simultaneously;
Input picture is specifically carried out video coding by moving picture encoding, and video coding standard used is MJPEG;
The dynamic encoding code stream of frame type selecting or static encoding code stream according to mark carry out package and reach decoding end by network.
In method of the present invention, described step S02 specifically comprises the following steps:
By network reception encoding stream, and judge a yard stream type;
If static encoding code stream, then parse the former frame display image corresponding position that change block view data is covered preservation by the information such as change block position;
If dynamically encoding code stream, then carry out video decode, the video coding standard of employing is MJPEG, and overrides the former frame display image of preservation;
Send decoding image frame out into image display display, and the image frame shown by buffer memory.
In method of the present invention, each frame input picture is all carried out sound state differentiation by described coding side, and described coding side moving picture encoding carries out parallel with static image procossing simultaneously.
In method of the present invention, the transmission of the network of coding side takes out coded data by the time sequence of frame of video, and to avoid because the dynamic and static treatment time inconsistent causes the random sequence of frame, concrete steps comprise:
The frame of video that the moving picture encoding of coding side obtains with static image procossing has identical time stamp, and static image procossing safeguards the queue of<time stabs, frame type>data pair in addition;
Coding side, when network transmits, obtains<time stab, frame type>data pair successively from queue, orderly from moving picture encoding result buffer or static processing result image buffer zone code stream after acquisition processing.
Present invention also offers a kind of self-adapted remote desktop image transmission system, comprising:
Coding side, for collecting computer desktop original image and copy one part and carry out static image procossing and moving picture encoding respectively; Static image procossing is specially and input picture is carried out piecemeal and detects out change block, if change number of blocks exceedes threshold value, marking this frame is dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames; Moving picture encoding is specially and input picture is carried out video coding; According to mark the corresponding code stream of frame type selecting and reach decoding end by network transmission module after package;
Decoding end, for carrying out respective handling according to input code flow type, if static encoding code stream, then covers the former frame display data of preservation according to change block position by changing content; If dynamic encoding code stream, then carry out video decode and override the former frame display data of preservation, and show finally decoding frame of video out.
In system of the present invention, described coding side specifically comprises:
Image capture module, exports desktop picture for collecting computer, carries out color space conversion, copies one part of view data simultaneously, sends into described static image procossing module and moving picture encoding resume module respectively;
Static image procossing module, for desktop picture data are carried out piecemeal, detects out change block, marks this frame type according to change number of blocks, simultaneously record change block position and view data, preserves the reference that this frame changes block detection as next frame;
Moving picture encoding module, for input desktop picture is carried out video coding, the standard of employing is MJPEG;
Network transmission module, obtains coded data network from static processing result image buffer zone or moving picture encoding result data buffer successively by video frame time order and transfers to decoding end.
In system of the present invention, described static image procossing module also for recording<time stabs, frame type>data pair of every two field picture, is pressed video frame time order for network transmission module and is read dynamic or static encoding stream.
In system of the present invention, described decoding end specifically comprises:
Network transmission module, for receiving the code stream that compression end sends, and sends into the static image procossing module of described decoding end according to code stream type or moving image decoding module processes, recording of video frame encoding stream correspondence<time stabs, frame type>data pair simultaneously;
Moving image decoding module, for input code flow is carried out video decode, the video coding standard of employing is MJPEG;
Static image decoder module, for resolving change block positional information, and covers the previous frame image corresponding position of preservation by view data;
Image display, for reading<time stabs, frame type>data pair of described decoding end record successively, reads frame of video from dynamic image decoded result buffer zone or static treatment result buffer and shows.
The useful effect that the present invention produces is: every frame computer desktop image of input is all carried out sound state differentiation at coding side by the present invention, it is sent to decoding end decoding according to the change adaptively selected encoding stream of piece size or static encoding stream, decoding end is according to the encoding stream type received, and the corresponding static state of employing or dynamic decoder strategy decode desktop picture data and show. The present invention provide not only good long-distance video playing fluency, maintains excellent sensitivity and picture quality simultaneously, improve Consumer's Experience, obtain better long-range desktop image transmission effect under the quiescent conditions such as text editor, mouse operation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is a kind of self-adapted remote desktop image transmission method one embodiment schematic flow sheet of the present invention;
Fig. 2 is coding side process framework schematic diagram described in a kind of self-adapted remote desktop image transmission method of the present invention;
Fig. 3 is decoding end process framework schematic diagram described in a kind of self-adapted remote desktop image transmission method of the present invention;
Fig. 4 is a kind of self-adapted remote desktop image transmission system embodiment structural representation of the present invention.
Embodiment
In order to make the object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
Reference Fig. 1, Fig. 1 are a kind of self-adapted remote desktop image transmission method one embodiment schematic flow sheets of the present invention, comprise the following steps:
Step S01, coding side collecting computer desktop original image copies one part after carrying out color space conversion and carries out still image coding and moving picture encoding simultaneously, input frame is carried out piecemeal and detects out change block by still image coding, when change number of blocks exceedes threshold value, then to mark this frame be dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames, input frame is carried out video coding by moving picture encoding, finally according to the static encoding code stream of frame type selecting or dynamic video encoding code stream and reach solution pressure side by network transmission module after package.
Step S02, decoding end carries out respective handling according to input code flow type, if changing content is then covered the former frame display data of preservation by static encoding code stream according to information such as change block positions; If dynamically encoding code stream, then carry out corresponding video decoding and override the former frame display data of preservation, final decoding frame of video out can send into image display display.
Reference Fig. 2, Fig. 2 are coding side one embodiment schematic flow sheets described in a kind of self-adapted remote desktop image transmission method of the present invention, comprise the following steps:
Step S11, collecting computer desktop picture data, carry out color space conversion, and copy one part, the acquisition time stamp of marking image frame;
Computer desktop raw image data is rgb format, and follow-up moving picture encoding is yuv format, therefore first carries out color space conversion; This view data is copied one part, one part for step S12, one part for step S13, make two kinds of modes can parallel processing, simultaneously, two parts of view data all retain unified acquisition time stamp, as the mark of frame sequential, can prevent front and back frame taked coded system difference and the inconsistent and frame sequential entanglement that causes consuming time.
Step S12, moving picture encoding, after coding, data put into compression encoding buffer, and maintain the acquisition time stamp of mark; Moving picture encoding adopts MJPEG coding standard, but is not limited to this coding standard;
Step S13, image is carried out piecemeal, contrast former frame, record each change block width, height, origin coordinates;
Image piecemeal not differentiate between images content, adopt uniform rules by Z zag manner image divided sized by the fritter of 16*16, not enough size by actual block size. Adopt the mode of two frame subtract to contrast the former frame same block of present frame and preservation, when certain pixel value in certain block exceedes width, height that threshold value then records this block top left corner pixel point origin coordinates and block, then carry out the comparison of next block.
Step S14, judge change number of blocks whether be less than threshold value, if being not less than, implementation step S15, otherwise implementation step S16;
Step S15, to mark this frame be dynamic image, obtains the acquisition time stamp of mark in described step S11, records this frame correspondence<acquisition time stabs, frame type>data pair, by these data to entering frame information queue.
Step S16, change block information according to record, copy respective image data, to uncompressed encoding buffer, marks this frame for static image, records this frame correspondence<time stamp, frame type>data pair;
Change block information according to record in described step S13, copies each change block position desktop picture data block and changes block information to uncompressed encoding buffer, and maintains the acquisition time stamp of mark; Mark this frame for static image, obtain the acquisition time stamp of mark in described step S11 simultaneously, record this frame correspondence<time stabs, frame type>data pair, by these data to entering frame information queue;
Step S17, preservation present frame change the reference of block detection as next two field picture;
Step S18, acquisition one from frame information queue<time stabs, frame type>data pair, select correct encoding stream to be sent to decoding end;
<the time stamp that described step S15 and described step S16 records is read successively from frame information queue, frame type>data pair, from compression encoding stream or uncompressed encoding stream buffer zone, the rear data of coding are read according to frame type selecting, correct picture coding stream can be selected from selected encoding stream buffer zone according to time stamp simultaneously, and there will not be the random sequence between frame;
Fig. 3 is decoding end one embodiment schematic flow sheet described in a kind of self-adapted remote desktop image transmission method of the present invention, comprises the following steps:
Step S21, received code stream, maintain a frame information queue simultaneously, time stamp and the frame type of record image frame;
Step S22, moving image decoding, after coding, data put into compression encoding buffer, and maintain the time stamp of mark;
Step S23, acquisition one from frame information queue<time stabs, frame type>data pair, determine whether static treatment frame, if not static frames then implementation step S24, otherwise implementation step S25;
Step S24, the corresponding image decoding out of acquisition current time stamp;
Step S25, resolve uncompressed encoded data stream, obtain each change block zero position, width, height, the data cover of change is shown frame to front one;
Step S26, preservation currently show frame, and send into display equipment display;
Reference Fig. 4, Fig. 4 are a kind of self-adapted remote desktop image transmission system embodiment structural representations of the present invention; Coding side 00 collecting computer desktop original image copies one part and carries out static image procossing module 02 and moving picture encoding module 03 respectively after carrying out color space conversion, static image procossing to input frame piecemeal and detects out change block, this frame type is marked according to change number of blocks, record change block position and view data simultaneously, input frame is carried out video coding by moving picture encoding module 03, is reached by network transmission module 04 according to the corresponding code stream of frame type selecting and after package and separates pressure side 05.
Described decoding end judges input encoding stream type, if changing content is then covered the former frame display data of preservation by static encoding stream according to information such as change block positions, if moving picture encoding stream then carries out video decode and override the former frame display data of preservation; Show described decoding out image.
Described coding side 00 specifically comprises:
Image capture module 01, desktop picture is exported by image acquisition units 011 collecting computer, copying one part of view data after color notation conversion space unit 012 carries out color space conversion, the static image procossing module 02 of feeding and moving picture encoding module 03 process respectively;
Static image procossing module 02; desktop picture data are carried out piecemeal by frame change detecting unit 021; detect out change block; mark this frame type according to change number of blocks; change blocks of data packet element 022 records change block position and view data, and preserve the reference of this frame as the fast detection of next frame change; Frame information recording unit 023 records each two field picture correspondence of input<time stabs, frame type>data pair simultaneously;
Moving picture encoding module 03, carries out video coding to input desktop picture, and employing standard is MJPEG;
Network transmission module 04, code stream selection unit 041 to obtaining coded data from static processing result image buffer zone or moving picture encoding result data buffer successively by video frame time order according to the data of described record and sends unit 042 by network and transfers to decoding end 05;
Described decoding end 05 specifically comprises:
Network transmission module 06, the code stream that network reception unit 061 received code end sends, the static image procossing module 07 of described decoding end is sent into or moving image decoding module 08 processes according to code stream type, frame information recording unit 062 recording of video frame encoding stream correspondence<time stabs, frame type>data pair simultaneously;
Static image decoder module 07, resolves change block positional information, and change block view data covers the previous frame image corresponding position of preservation;
Moving image decoding module 08, carries out video decode to input code flow, and employing standard is MJPEG;
Image display 09, decoded data selection unit 091 reads<the time stamp of described decoding end record successively, frame type>data pair, read frame of video from dynamic image decoded result buffer zone or static treatment result buffer, after color space change unit 092 is converted to rgb format, sends into image-display units shows.
To sum up, the every frame computer desktop image of input is all carried out sound state differentiation at coding side by the present invention, simultaneously parallel carry out moving picture encoding and static image procossing, it is sent to decoding end decoding according to the change adaptively selected MJEPG encoding stream of piece size or static encoding stream, and send successively by original video frame time sequence guaranteeing to select suitable encoding stream according to<time stabs, the frame type>data recorded simultaneously; Decoding end is according to receiving encoding stream type, and the corresponding static state of employing or dynamic decoder strategy decode desktop picture data and show. The present invention provide not only good long-distance video playing fluency, maintains excellent sensitivity and picture quality simultaneously, improve Consumer's Experience, obtain better long-range desktop image transmission effect under the quiescent conditions such as text editor, mouse operation.
Should be understood that, for those of ordinary skills, it is possible to improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.
Claims (9)
1. a self-adapted remote desktop transmission method, it is characterised in that, comprise the following steps:
Step S01, coding side collecting computer desktop original image and copy one part and carry out static image procossing and moving picture encoding respectively; Static image procossing is specially and input picture is carried out piecemeal and detects out change block, if change number of blocks exceedes threshold value, marking this frame is dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames; Moving picture encoding is specially and input picture is carried out video coding; According to mark the corresponding code stream of frame type selecting and be transmitted through the network to decoding end after package;
Step S02, decoding end carry out respective handling according to input code flow type, if static encoding code stream, then changing content cover according to change block position the former frame display data of preservation; If dynamic encoding code stream, then carry out video decode and override the former frame display data of preservation, and show finally decoding frame of video out.
2. the method for claim 1, it is characterised in that, described step S01 specifically comprises the following steps:
Collecting computer desktop original image copies one part and carries out static image procossing and moving picture encoding respectively after carrying out color space conversion;
Input picture is specifically carried out piecemeal according to piecemeal rule by static image procossing, each piecemeal is carried out pointwise pixel ratio and relatively detects out change block, if change number of blocks exceedes threshold value, marking this frame is dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames, preserve the reference that this frame changes block detection as next frame simultaneously;
Input picture is specifically carried out video coding by moving picture encoding, and video coding standard used is MJPEG;
The dynamic encoding code stream of frame type selecting or static encoding code stream according to mark carry out package and reach decoding end by network.
3. the method for claim 1, it is characterised in that, described step S02 specifically comprises the following steps:
By network reception encoding stream, and judge a yard stream type;
If static encoding code stream, then parse the former frame display image corresponding position that change block view data is covered preservation by the information such as change block position;
If dynamically encoding code stream, then carry out video decode, the video coding standard of employing is MJPEG, and overrides the former frame display image of preservation;
Send decoding image frame out into image display display, and the image frame shown by buffer memory.
4. method as claimed in claim 2, it is characterised in that, each frame input picture is all carried out sound state differentiation by described coding side, and described coding side moving picture encoding carries out parallel with static image procossing simultaneously.
5. method as claimed in claim 2, it is characterised in that, the network transmission of coding side takes out coded data by the time sequence of frame of video, and to avoid because the dynamic and static treatment time inconsistent causes the random sequence of frame, concrete steps comprise:
The frame of video that the moving picture encoding of coding side obtains with static image procossing has identical time stamp, and static image procossing safeguards the queue of<time stabs, frame type>data pair in addition;
Coding side, when network transmits, obtains<time stab, frame type>data pair successively from queue, orderly from moving picture encoding result buffer or static processing result image buffer zone code stream after acquisition processing.
6. a self-adapted remote desktop image transmission system, it is characterised in that, comprising:
Coding side, for collecting computer desktop original image and copy one part and carry out static image procossing and moving picture encoding respectively; Static image procossing is specially and input picture is carried out piecemeal and detects out change block, if change number of blocks exceedes threshold value, marking this frame is dynamic image, otherwise record change block coordinate and view data and to mark this frame be static frames; Moving picture encoding is specially and input picture is carried out video coding; According to mark the corresponding code stream of frame type selecting and reach decoding end by network transmission module after package;
Decoding end, for carrying out respective handling according to input code flow type, if static encoding code stream, then covers the former frame display data of preservation according to change block position by changing content; If dynamic encoding code stream, then carry out video decode and override the former frame display data of preservation, and show finally decoding frame of video out.
7. system as claimed in claim 6, it is characterised in that, described coding side specifically comprises:
Image capture module, exports desktop picture for collecting computer, carries out color space conversion, copies one part of view data simultaneously, sends into described static image procossing module and moving picture encoding resume module respectively;
Static image procossing module, for desktop picture data are carried out piecemeal, detects out change block, marks this frame type according to change number of blocks, simultaneously record change block position and view data, preserves the reference that this frame changes block detection as next frame;
Moving picture encoding module, for input desktop picture is carried out video coding, the standard of employing is MJPEG;
Network transmission module, obtains coded data network from static processing result image buffer zone or moving picture encoding result data buffer successively by video frame time order and transfers to decoding end.
8. system as claimed in claim 7, it is characterised in that, described static image procossing module also for recording<time stabs, frame type>data pair of every two field picture, is pressed video frame time order for network transmission module and is read dynamic or static encoding stream.
9. system as claimed in claim 6, it is characterised in that, described decoding end specifically comprises:
Network transmission module, for receiving the code stream that compression end sends, and sends into the static image procossing module of described decoding end according to code stream type or moving image decoding module processes, recording of video frame encoding stream correspondence<time stabs, frame type>data pair simultaneously;
Moving image decoding module, for input code flow is carried out video decode, the video coding standard of employing is MJPEG;
Static image decoder module, for resolving change block positional information, and covers the previous frame image corresponding position of preservation by view data;
Image display, for reading<time stabs, frame type>data pair of described decoding end record successively, reads frame of video from dynamic image decoded result buffer zone or static treatment result buffer and shows.
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| CN107666610A (en) * | 2017-09-25 | 2018-02-06 | 北京小鱼易连科技有限公司 | Desktop video content analysis method |
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| CN112887717A (en) * | 2021-01-22 | 2021-06-01 | 北京锐马视讯科技有限公司 | Intelligent terminal video coding optimization method and device, equipment and storage medium |
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