CN1527541A - Real-time transmission method and system monitoring video image - Google Patents
Real-time transmission method and system monitoring video image Download PDFInfo
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- CN1527541A CN1527541A CNA031070914A CN03107091A CN1527541A CN 1527541 A CN1527541 A CN 1527541A CN A031070914 A CNA031070914 A CN A031070914A CN 03107091 A CN03107091 A CN 03107091A CN 1527541 A CN1527541 A CN 1527541A
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Abstract
The real-time transmission method and system monitoring video image is used in network system connecting one controlling end and controlled end. In the controlled end, each received image frame is first defined as several sub-blocks with one reference sub-block being used as the initial point, one judgment condition is executed on the other sub-blocks in specific range of the frame so as to form one varying sub-block set of the reference sub-block and other sub-blocks meeting the judgment condition. Then, the varying sub-block set is encoded and the encoded varying sub-block set is sent to the controlling end for substituting original sub-blocks.
Description
Technical field
The invention relates to a kind of live transmission method and system of monitor video image, and be particularly to a kind of characteristic of image encoding of utilizing and significantly reduce the network bandwidth that the monitoring image transmission takies, and then promote the live transmission method and the system of the monitor video image of image transmission speed.
Background technology
Monitor computer system on long-range or diverse location or interface equipment (as a keyboard, video and mouse apparatus (Keyboard, Video ﹠amp by network technology; Mouse, mode KVM) is popularized gradually.In Fig. 1, promptly show a kind of known remote image monitoring system, its keyboard by a unit 11 (i.e. a main control end), video, mouse (KVM) bus are come keyholed back plate, that is the user is to use the server switch of knowing (Server Switches) to come by 12 while of network interface keyholed back plate LAN (LocalArea Network, LAN) interior or Wide Area Network (Wide Area Network, WAN) picture image of Nei all types of computer system 13,14 (being controlled terminal).
In this known remote image monitoring system, transmission method for monitoring image normally adopts the full screen transmission, i.e. this controlled terminal 13,14 are transferred to this main control end 11 with whole picture signal (is representative with each frame (Frame)) with fixed frequency (frame/sec) compression or non-compress mode shows output, because general image document is all very huge, be positioned at long-range main control end 11 as if promptly entire image being transferred to by network without any processing, then easily take a large amount of network bandwidth (Bandwidth), make that overall transfer speed is slow, the relatively difficult purpose of reaching remote monitoring image real-time update.
In addition, the transmission method of another kind of monitoring image is that whole image is cut into a prearranged number subframe (title again " sub-block "), its detect respectively by a detection module vicissitudinous part between the corresponding subframe of two front and back successive image frames (claim again " the change block " or " dynamic block "), and only the subframe that changes in two frames is partly transferred to main control end 11 afterwards through coding (compression) and exports to show.
Fig. 2 A promptly shows the two change blocks 21 and 22 that are connected.If frame (Frame) size with each image frame is that 1027 * 768 pixels (Pixel) are example, when each frame vertically being reached laterally each 16 equal portions cutting when producing 256 sub-block, the size of its each sub-block is about 64 * 48 pixels (Pixel).In the process of Network Transmission, if block 21 and block 22 are encoded with jpeg format respectively, then the size behind the coding is respectively 785 and 745 bytes (bytes), and its total transmission size is the 785+745=1530 byte.Otherwise if this block that is connected 21 is carried out the jpeg format coding with block 22, then the size behind the block coding altogether is 964 bytes.Therefore, be 1530-964 ≈ 500 bytes by the rough JPEG figure shelves that can draw of above-mentioned data for the frequent load (Overhead) of each 64 * 48 block of pixels coding.So when transmitting two blocks 21 and 22 simultaneously, its frequent load accounts for 500/1530 ≈ 33% in the ratio of total transmission amount; Otherwise if each block transmits respectively, then its shared ratio of often loading is 500/ (1530/2) ≈ 66%.
Fig. 2 B then further shows four change blocks that are connected 21,22,23 and 24.It is that 1027 * 768 pixels and the sub-block that cuts into 256 64 * 48 pixels are example with the picture frame size equally.If with this block 21, block 22, block 23, with block 24 respectively with the jpeg format coding, the size behind its coding is respectively 785,745,1272,840 bytes (bytes), its total transmission size is the 785+745+1272+840=3642 byte.Otherwise if these four blocks that are connected are carried out the jpeg format coding together, then the size behind the block coding altogether is 1966 bytes, and then it is often loaded and is 3642-1966 ≈ 1676 bytes, is about 50% of 3642 bytes.Analyse speech,, because only need bear a spot of frequent load,, use transmission volume still less so can transmit than same sub-block is separately independent usually when a plurality of sub-block are to connect together when transmitting simultaneously.
Because some the change blocks on the picture are because of there is no relevance to each other, so being fit to respectively, coding transmits, but might other the change blocks on picture because have relevance or interactive and next-door neighbour link together, be fit to coding transmission simultaneously on the contrary, to reduce transmission to frequent load.And known mode is not found this characteristic, but only independently encodes at any single block that change arranged and transmits, and regular meeting increases the frequent load of image compression for block, and fails to reach best coding effect.With above-mentioned example is example, if encode together with a plurality of connection blocks, can significantly save unwanted frequent load and make whole total transmission size reduction.
Summary of the invention
In view of this, main purpose of the present invention provides a kind of live transmission method and system of monitor video image, can utilize the characteristic of image encoding, significantly reduce the monitoring image shared network bandwidth of when transmission with optimized Network Transmission flow, and then improve the general image transmission speed, reach the purpose of real-time update remote monitoring picture.
In order to reach above-mentioned purpose,, be to apply to connect on the network system of a main control end and a controlled terminal according to the live transmission method of the monitor video image of the embodiment of the invention.At first, a frame definition that controlled terminal is received becomes a plurality of sub-block and encodes in regular turn.Then, find sub-block in the change as the initial point of benchmark change sub-block therein, seek its contiguous change sub-block to be made into a change sub-block set according to specific Rule of judgment and scope, wherein should change a plurality of change sub-block of sub-block set, be to be mutual binding and to form a rectangle on frame.
Afterwards, the numbering with each change sub-block in set of the change sub-block behind the coding and the set of this change sub-block is sent to main control end.After main control end receives,, make the change sub-block that transmits replace the corresponding sub-block that has identical numbering in the main control end in the former supervisory frame then according to the numbering that transmits.
Wherein, controlled terminal is sought the method for change sub-block set, is earlier benchmark to be changed sub-block to add in the set of change sub-block, then, judges whether the sub-block that change sub-block set right side connects all is the change sub-block.If the sub-block that change sub-block set right side connects all is the change sub-block, then the sub-block that the right side is connected adds the set of change sub-block.Afterwards, judge whether the sub-block that the change sub-block set downside of this renewal connects all be to change sub-block.If the sub-block that change sub-block set downside connects all is the change sub-block, then the sub-block that downside is connected adds in the set of change sub-block again.And work as, it is not all be when changing sub-block that last change sub-block is gathered the sub-block that its right side is connected with downside, and then one changes sub-block and gathers and complete.
According to another embodiment of the present invention, controlled terminal is sought the method for change sub-block set, be earlier benchmark to be changed sub-block to add the set of change sub-block, and defining a set critical value, representative change sub-block number in a change sub-block set accounts for the ratio of all sub-block numbers in this set.Then, judge whether the temporary transient set comprise the sub-block that the set of change sub-block is connected with its right side meets the set critical value, if meet the set critical value, then the sub-block that the right side is connected adds and changes sub-block and gather.Afterwards, judge whether the temporary transient set comprise the sub-block that the set of change sub-block is connected with its downside meets the set critical value, if meet the set critical value, then the sub-block that downside is connected adds and changes sub-block and gather.And do not meet when gathering critical value when the temporary transient set that comprises the sub-block that change sub-block set and its right side be connected with downside, then change sub-block and gather searching and finish.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, embodiment cited below particularly, and conjunction with figs. are described in detail as follows:
Fig. 1 shows a known remote image monitoring system.
Fig. 2 A shows two change blocks that are connected.
Fig. 2 B shows four change blocks that are connected.
Fig. 3 is a schematic diagram, is the system architecture of demonstration according to the RTTS of the monitor video image of the embodiment of the invention.
Fig. 4 is a flow chart, is the operating process of demonstration according to the live transmission method of the monitor video image of the embodiment of the invention.
Fig. 5 is a flow chart, is the flow process that shows the manufacture method of gathering according to the change sub-block of first embodiment of the invention.
Fig. 6 shows a frame example.
Fig. 7 is a flow chart, is the flow process that shows the manufacture method of gathering according to the change sub-block of second embodiment of the invention.
Fig. 8 shows another frame example.
Wherein, description of reference numerals is as follows:
11～main control end; 12～network interface; 13,14～computer system; 21,22,23,24～change block; 30～controlled terminal; 31～main control end; 32～network system; S40, S41, S42, S43, S44, S45, S46, S47 and S48～operating procedure; S51, S52, S53, S54, S55, S56 and S57～operating procedure; 60～frame; S71, S72, S73, S74, S75, S76, S77, S78, S79, S80 and S81～operating procedure; 80～frame.
Embodiment
Asking for an interview Fig. 3, is the system architecture that shows according to the transmission system of the monitor video image of the embodiment of the invention, and it comprises: a controlled terminal 30, a main control end 31, with a network system 32.Wherein, network system 32 is in order to connection main control end 31 and controlled terminal 30, and network system 32 can be a world-wide web (Internet), LAN (LAN) or Wide Area Network (WAN) system.
Ask for an interview Fig. 4, be the live transmission method that shows according to the monitor video image of the embodiment of the invention, step comprises: at first, see step S40, to capture the sub-block that is divided into specific quantity from each picture frame of controlled terminal 30, and each sub-block is imposed numbering according to putting in order.Enter step S41 then, number order according to aforementioned sub-block, in each sub-block of a frame of controlled terminal 30, seek benchmark change sub-block, that is in the sub-block piece that number order is arranged, the sub-block of looking for first change is as the initial point of observing whole change.The earlier figures picture frame is that the VGA card by controlled terminal 30 is captured.In addition, sub-block (subframe) is to learn by the sub-block content of identical numbering in two successive image frames before and after controlled terminal 30 contrasts whether it has change, and promptly whether this sub-block is the change sub-block.
Then, carry out step S42, judging in a plurality of sub-block of this frame has the no change sub-block.If do not find, then advance to step S43; Otherwise, if any change sub-block of discovery is arranged, then advancing to step S44, i.e. making comprises this benchmark change sub-block in an interior change sub-block set.In the present embodiment, each change sub-block set can comprise the relative numbering of one or more change sub-block, particularly when some change sub-block originally be to link mutually and when being a rectangular arranged in image frame, promptly might be placed among the same change sub-block set (treat back describe in detail).It should be noted that the method for making the set of change sub-block can finish with two kinds of implementation methods, thus below describe with Fig. 5 and Fig. 7 respectively.
Ask for an interview Fig. 5, in the method that the making change sub-block of first embodiment of the invention is gathered, at first, as step S51, the benchmark change sub-block that is found to is joined in the change sub-block set of a blank, then, as step S52, judge whether the sub-block that change sub-block set right side connects all is the change sub-block.If the sub-block that change sub-block set right side connects all be the change sub-block, then enter step S53, the reference numeral of the sub-block that the right side is connected adds and upgrades aforementioned change sub-block and gather.And if the sub-block that change sub-block set right side connects not is all to be the change sub-block, then the sub-block that right side is not connected adds the set of change sub-block, and enters to step S56.
After completing steps S53, enter step S54, judge further promptly whether the sub-block that the change sub-block set downside after this renewal connects all be to change sub-block.If the sub-block that the set of the change sub-block after this upgrades downside connects all is the change sub-block, then enter step S55, the reference numeral that is about to the sub-block of downside connection adds to upgrade the set of change sub-block once again, then get back to step S52, continue to judge the right side sub-block of the change sub-block set after upgrading once again.If in step S54, the sub-block that change sub-block set downside connects not is all to be the change sub-block, and then the sub-block that downside is not connected adds the set of change sub-block, but directly gets back to step S52.
In abovementioned steps S52, if the sub-block that this change sub-block set right side connects not is all to be the change sub-block, then the sub-block that right side is not connected adds the set of change sub-block, and enters to step S56.Step S56 judges further whether the sub-block that this change sub-block set downside connects all is the change sub-block.When its judged result is " deny " time, the sub-block that the right side of then representing this change sub-block to gather is connected with downside is not the change sub-block, promptly enters step S57, the making of a change sub-block set is finished and is finished; Otherwise, when the judged result of step S56 for " be " time, the sub-block of promptly representing this change sub-block set downside to connect all is the change sub-block, flow process must be routed to step S55, be about to the sub-block numbering adding of this change sub-block set downside and upgrade this change sub-block set, then get back to step S52, the change sub-block in bringing in constant renewal in is gathered till all non-change sub-block of sub-block that its right side is connected with downside.
It should be noted that, in execution in step S52, if the sub-block that change sub-block set right side connects not is when all being the change sub-block, afterwards, the looking for action to the right and all can stop with judging of all change sub-block set, and the sub-block that only connects at downside is judged and is got final product.In the same manner, in execution in step S54, if the sub-block that change sub-block set downside connects not is when all being the change sub-block, afterwards, the looking for action downwards and all can stop with judging of all change sub-block set, and the sub-block that only connects at the right side is judged and is got final product.
And behind the step S56 and S57 of execution graph 5, promptly during all non-change sub-block of the sub-block that is connected with downside when change sub-block set right side, one changes making that sub-block gathers and has finished and finish, and whole start flow process can be got back to the step S45 among Fig. 4.
In the step S45 of Fig. 4, the relative numbering of sub-block can be got up by record in this change sub-block set, and from the complete sub-block set of frame, deduct, make in this frame remaining sub-block and therefrom look for benchmark change sub-block again through step S41, so go round and begin again, in this frame, do not find (as step S42) till any change sub-block, that is all change sub-block all can be found out and have been made into till the set of change sub-block in this frame.
Lift an example and describe, Fig. 6 shows a frame 60, carries out the step S40 as Fig. 4 earlier, promptly is divided into 16 sub-block through numbering, wherein scribble stain sub-block partly and represent the change sub-block of this frame 60, and the complete sub-block set that constitutes this frame 60 is { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}.
Look for benchmark change sub-block according to the number order of each sub-block in the frame 60 then, wherein sub-block 1 (benchmark change sub-block) can be detected earlier, thereby carries out the manufacturing process (seeing the step S44 of Fig. 4) according to the set of change sub-block.
As the method that first embodiment of foundation Fig. 5 makes the set of change sub-block, the numbering of this sub-block 1 can be added into the set of change sub-block earlier { among the 1}.Then be a change sub-block (as the step S52 of Fig. 5) because the right side sub-block (sub-block 2) of change sub-block set is judged out, therefore, the numbering of sub-block 2 be added into and be updated to the set of change sub-block 1,2} (as the step S53 of Fig. 5).Afterwards, be that unit is sought downwards with block 1 and 2, because the downside sub-block (sub-block 5 and 6) of change sub-block set is the change sub-block, therefore, sub-block 5 and 6 reference numeral are added into and are updated to change sub-block set { 1,2,5,6} (as the step S55 of Fig. 5).
Then, with block 1,2,5, with 6 be that unit seeks (the step S52 that gets back to Fig. 5) to the right because sub-block 3 is not to be the change block, so stop to seek to the right.Moreover, with block 1,2,5, with 6 be that unit seeks (as the step S56 of Fig. 5) downwards, because the downside sub-block (sub-block 9 and 10) of change sub-block set is the change sub-block, therefore, sub-block 9 and 10 reference numeral are added into and are updated to change sub-block set { 1,2,5,6,9,10} (as the step S55 of Fig. 5).
Afterwards, be that unit is sought downwards with block 1,2,5,6,9 and 10 again, afterwards because sub-block 13 is not to be the change sub-block, therefore, one first change sub-block set 1,2,5,6,9,10} complete (as the step S57 of Fig. 5).
Then, flow process can be got back to the step S45 as Fig. 4, is about to first change sub-block set { 1,2,5,6,9, the relative numbering 1,2,5,6,9,10 of change sub-block is from the complete sub-block set { 1,2 of this frame 60 among the 10}, 3,4,5,6,7,8,9,10,11,12,13,14,15, to deduct among the 16}, remaining sub-block constitutes new complete sub-block set { 3,4,7,8,11,12,13,14,15,16}.And then repeat as step S41 identical among Fig. 4 and method, can find other second and third change sub-block to gather 7,8} and { 14}.
In this example, the transmission size of supposing each sub-block all is 100 bytes (Bytes) and is 66% to calculate with the frequent load proportion that transmits each sub-block that the frequent load that then transmits each sub-block is 66 bytes (Bytes).If with known method, promptly each change sub-block is sent to main control end respectively, because have 9 change sub-block in this frame 60, then must cost (66+34) * 9)=total transmission quantity of 900.And according to the first embodiment of the present invention, { 1,2,5,6,9, the transmission quantity of 10} is about 66+ (100-66) * 6=270 in the first change sub-block set; { 7, the transmission quantity of 8} is about 66+ (100-66) * 2=134 in the second change sub-block set; And { transmission quantity of 14} is about 66+ (100-66) * 1=100, and promptly total transmission quantity is 270+134+100=504 in the 3rd change sub-block set.The ratio of first embodiment and known method is 504/900 ≈ 56%, and promptly the embodiment of the invention can more be saved 45% Network Transmission bandwidth than known manner.When the set of change sub-block was big more, the space that can save will be many more.
Other asks for an interview Fig. 7, changes the method for sub-block set according to the making of second embodiment of the invention.At first still each step S40, S41, S45 and the S44 of execution are identical earlier in Fig. 4 with aforementioned first embodiment, then enter as step S71, the numbering that benchmark is changed sub-block adds in the temporary transient set of sub-block of a blank, to change the sub-block set, the initial point of sub-block scope is chosen in temporary transient set as sub-block, as step S72, definition one change sub-block set=sub-block is temporarily gathered, so as being initial, the change sub-block set=sub-block that then searches out is temporarily gathered=benchmark change sub-block.Then carry out step S73, being about to this sub-block temporarily gathers in the temporary transient set of sub-block adding sub-block of right side connection, to obtain a temporary transient set critical value, this temporarily gathers critical value=(actual change sub-block number in the temporary transient set of sub-block)/(all sub-block numbers in the temporary transient set of sub-block).Be noted that, the method of the making of aforementioned first embodiment change sub-block set is to be initial point with benchmark change sub-block, earlier its adjacent subarea piece is confirmed as the scope of including and upgrade the set of change sub-block after the change sub-block again in, by that analogy, constantly enlarge the scope of choosing of this change sub-block set; Otherwise, according to the second embodiment of the present invention, be that to utilize the temporary transient set of a sub-block be initial point with benchmark change sub-block, no matter whether be that the sub-block that changes is temporarily included in the temporary transient set of this sub-block with its vicinity earlier, to do the judgement whether the set critical value meets, when meeting, just the value in the temporary transient set of sub-block is specified and give this change sub-block set.
Then, as step S74, whether the temporary transient set critical value of judging the temporary transient set of sub-block of the sub-block that adds the right side connection meets a named aggregate critical value, wherein should temporary transient set critical value must be more than or equal to this named aggregate critical value, and the operator can set this named aggregate critical value range between 0 to 1.If meet the named aggregate critical value, then carry out step S75, the sub-block that the sub-block that continuation will be upgraded is temporarily gathered the right side connection adds in the temporary transient set of this sub-block to upgrade once again; Otherwise, if do not meet the named aggregate critical value, then advance to step S76, sub-block is given in the value appointment of change sub-block set temporarily to be gathered, be that the sub-block that is returned in the set of change sub-block is heavily deposited in the temporary transient set of sub-block, for the first judgement that only contains benchmark change sub-block, then sub-block set=benchmark change sub-block is temporarily gathered=changed to this sub-block.
To the step S75 of the temporary transient set of sub-block, carry out step S77 in the sub-block of finishing aforementioned adding downside connection, i.e. whether the temporary transient set critical value that the sub-block set temporarily of judgement adding downside sub-block is defined meets aforementioned named aggregate critical value.If meet the named aggregate critical value, resumes step S72 then, the set of change sub-block is given in the value appointment that is about to the temporary transient set of existing sub-block, to upgrade the set of change sub-block, again be that initial point is included the sub-block of its adjacency in to do the critical value judgement with the temporary transient set of existing sub-block again, so go round and begin again, up to finding that a sub-block temporarily is integrated into defined temporary transient set critical value when adding its right side connexon block, and this same sub-block temporarily is integrated into defined temporary transient set critical value when adding its downside connexon block, till the aforementioned named aggregate critical value of both neither symbols.
Otherwise if judge through step S77, the temporary transient set of sub-block that adds the downside sub-block does not meet the named aggregate critical value, and then the sub-block that will change in the sub-block set as step S78 is deposited back in the temporary transient set of this sub-block.Then get back to step S72 once again, temporarily gathering (sub-block that promptly changes sub-block set internal memory) with the sub-block of this answer data is that initial point reintegrates the right side sub-block of its adjacency to do the judgement of set critical value.
Judging through abovementioned steps S74, after assert that the temporary transient set of the sub-block with right side sub-block does not meet the named aggregate critical value, then come step S76, then need the sub-block in the set of change sub-block is deposited back among this sub-block temporarily gathers, then continue step S79 and S80, be initial point promptly, include it in and judge that to make the set critical value this is identical with abovementioned steps S75 and S77 in abutting connection with the downside sub-block with the temporary transient set of the sub-block of this answer data.
The temporary transient temporary transient set critical value that is defined of gathering does not meet the named aggregate critical value and if step S80 judges this sub-block that comprises downside connexon block, then enter step S81, promptly represent set of change sub-block or the temporary transient set of sub-block in step S76 to be used as a confirmed change sub-block set, and then can get back to the step S45 of Fig. 4; Otherwise the flow process behind the step S80 is to come back to step S72, continues temporarily to gather with the sub-block of this addings downside sub-block and merges into an initial point as new change sub-block collection and merge in abutting connection with the right side sub-block to it, and judge that it gathers critical value.
Identical with the first embodiment of the present invention, when the step S81 from Fig. 7 gets back to the step S45 of Fig. 4, sub-block numbering in any change sub-block set that has been identified can be by record, deduction from the complete sub-block set of frame, make in this frame remaining sub-block can enter step S41 therefrom to look for benchmark change sub-block again, so go round and begin again, in this frame, do not find (as step S42) till any change sub-block, that is till the set of other change sub-block all found out.
Other lifts an example and describes according to the second embodiment of the present invention, and Fig. 8 shows a frame 80, and it can be divided into 15 sub-block through numbering earlier according to second embodiment of the invention, wherein is coated with the change sub-block (as Fig. 4 step S40) in the stain sub-block representative frame 80 partly, hence one can see that, and the complete sub-block set that constitutes this frame 80 is for { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}, and hypothesis named aggregate critical value is made as 3/4.
In frame 80, look for a sub-block 1 as benchmark change sub-block (as the step S41 of Fig. 4) according to the number order of sub-block then.After confirming that the sub-block 1 of finding a change is arranged, begin to make one first change sub-block set (as step S42 and the S44 of Fig. 4).Then sub-block 1 its sub-block that adds a blank is temporarily gathered 1}, and a change sub-block set=sub-block is temporarily gathered={ 1} (as step S71 and the S72 of Fig. 7).Then, this sub-block is temporarily gathered the right side sub-block of 1} adjacency 2 add and upgrade this sub-block temporarily assemble 1,2}, but total sub-block number=2/2=1 〉=3/4 (as step S73 and S74 of Fig. 7) in its change sub-block number/temporary transient set, meet the named aggregate critical value, therefore, continuation temporarily gathers { 1 with this sub-block, the sub-block 6 of 2} downside adjacency, 7 add and upgrade sub-block and gather temporarily that { 1,2} becomes { 1,2,6,7}.Afterwards and since the sub-block that comprises sub-block 6 and 7 temporarily gather 1,2,6, the temporary transient set critical value of 7} meets named aggregate critical value (3/4 〉=3/4), therefore, make change sub-block set=sub-block temporarily gather 1,2,6,7} (as step S72).
Afterwards, by that analogy, temporarily gather when finding a sub-block that includes the set of change sub-block and its right side sub-block, and one include the set of same change sub-block and temporarily gather in abutting connection with the sub-block of sub-block with its downside, both are neither when meeting the named aggregate critical value, then represent one first change sub-block set to complete.In this example, the change sub-block set that obtains at last is { 1～15}.It should be noted that the named aggregate critical value can decide according to image, transmission state, the environment of different kenels, when the named aggregate critical value of second embodiment when being set at 1, promptly identical with first embodiment.
In second embodiment of the invention, mainly be limitedly to include non-change sub-block in set, make the block set can reach maximization, can be so that compression factor further gets a promotion.
Refer again to the step S43 of Fig. 4, all change sub-block set are all found out in same frame, do not had and found after other any change sub-block set, then enter as step S46, the pairing sub-block of numbering in set of change sub-block and the set is encoded, as the JPEG compression, and as step S47, the change sub-block numbering that the change sub-block behind the coding is gathered is sent to main control end 31 with relative sub-block by network system 32.
After main control end 31 receives data,,, make these relative sub-block that transmit replace the sub-block that has identical numbering in the main control end 31 in the supervisory frame according to the numbering that transmits then as step S48.
Therefore, by the transmission method and the system of monitor video image proposed by the invention, can utilize the characteristic of image encoding, significantly reduce the monitoring image shared network bandwidth of when transmission, and then promote the general image transmission speed, reach the purpose of real-time update remote monitoring picture.
Though the present invention describes as above with preferred embodiment; but it is not in order to limit the present invention; any person of an ordinary skill in the technical field; in not breaking away from design of the present invention and scope; can make any change and modification, so protection scope of the present invention should be as the criterion with claims restricted portion.
Claims (18)
1. the live transmission method of a monitor video image is used on the network system that connects a main control end and a controlled terminal, it is characterized in that, comprises the following steps:
At least one picture frame of intercepting in controlled terminal, and each frame is divided into a plurality of sub-block and being numbered respectively;
When detecting the sub-block of a change in a plurality of sub-block at described frame, change sub-block as a benchmark with the described sub-block that is detected;
With described benchmark change sub-block is initial point, other sub-block in the particular range in the described frame is carried out at least one Rule of judgment, so that the relative numbering of described benchmark change sub-block and the numbering that meets other sub-block of aforementioned Rule of judgment are made a change sub-block set;
Described change sub-block set is encoded; And
Described change sub-block set after described controlled terminal will be encoded transmits gives described main control end, to upgrade the sub-block of the identical numbering of the described frame of a monitoring in the described main control end according to the numbering in the described change sub-block set.
2. the live transmission method of monitor video image as claimed in claim 1 is characterized in that, the sub-block that transmits each numbering in the corresponding described change sub-block set is to described main control end, to upgrade the sub-block of described identical numbering.
3. the live transmission method of monitor video image as claimed in claim 1, it is characterized in that, numbering according to sub-block is arranged as the order that detects change, and so that first is detected the sub-block that presents upset condition in the described frame, as benchmark change sub-block.
4. the live transmission method of monitor video image as claimed in claim 1 is characterized in that, these the qualified sub-block in each change sub-block set link mutually on described frame and form a rectangular arranged.
5. the transmission method of monitor video image as claimed in claim 1 is characterized in that, the manufacture method of described change sub-block set comprises the following steps:
Described benchmark change sub-block is added described change sub-block set;
Whether the sub-block of described frame being carried out described change sub-block set right side connection all is the judgement of change sub-block; And
When the sub-block that connects when described change sub-block set right side all was the change sub-block, the sub-block adding that then described right side is connected was also upgraded described change sub-block set.
6. the live transmission method of monitor video image as claimed in claim 5, it is characterized in that, the manufacture method of described change sub-block set, comprise: the sub-block that connects when described change sub-block set right side is not all to be the change sub-block, when promptly not meeting Rule of judgment, then the sub-block that described right side is not connected adds described change sub-block set.
7. the live transmission method of monitor video image as claimed in claim 6 is characterized in that, the manufacture method of described change sub-block set further comprises the following steps:
Whether the sub-block of described frame being carried out described change sub-block set downside adjacency all is the Rule of judgment of change sub-block;
The sub-block that connects when described change sub-block set downside all is when changing sub-block, and described change sub-block set is also upgraded in the sub-block adding that then described downside is connected; And
Get back to previous steps, promptly again described frame is carried out whether the sub-block that the change sub-block set right side of described renewal connects all be the Rule of judgment that changes sub-block, so go round and begin again.
8. the live transmission method of monitor video image as claimed in claim 7, it is characterized in that, seek the manufacture method of described change sub-block set, comprise: the sub-block that connects when described change sub-block set downside is not all to be the change sub-block, when promptly not meeting Rule of judgment, then the sub-block that described downside is not connected adds described change sub-block set.
9. as the live transmission method of claim 7 or 8 described monitor video images, it is characterized in that, seek the method for described change sub-block set, comprise: the sub-block that connects when described change sub-block set right side is not all to be the change sub-block, and the sub-block that same change sub-block set downside connects is not when all being the change sub-block yet, and then a suitable change sub-block set completes.
10. the live transmission method of monitor video image as claimed in claim 1 is characterized in that, the manufacture method of described change sub-block set comprises the following steps:
Described benchmark change sub-block is added a sub-block temporarily to be gathered;
The value of the temporary transient set of described sub-block is appointed as the value of change sub-block set;
Definition one is the set critical value temporarily, represents the ratio of all sub-block numbers during change sub-block number is gathered with respect to described sub-block is temporary transient in the temporary transient set of described sub-block;
To temporarily gather sub-block that the right side connects in sub-block described in the described frame all adds and upgrades described sub-block and temporarily gather; And
Whether the temporary transient set critical value that described frame is carried out the temporary transient set of sub-block of described renewal meets the Rule of judgment of a named aggregate critical value.
11. the live transmission method of monitor video image as claimed in claim 10, it is characterized in that, the manufacture method of described change sub-block set, comprise: when the temporary transient set critical value of the temporary transient set of the sub-block of described adding right side connexon block did not meet described named aggregate critical value, the value that then will change the sub-block set was appointed as the value that described sub-block is temporarily gathered.
12. the live transmission method of monitor video image as claimed in claim 11 is characterized in that, the manufacture method of described change sub-block set comprises the following steps:
When the temporary transient set critical value of the temporary transient set of the sub-block of aforementioned renewal met described named aggregate critical value, sub-block that then will aforementioned renewal in described frame was temporarily gathered sub-block that downside connects and is added and upgrade described sub-block once again and temporarily gather;
Described frame is carried out the Rule of judgment whether temporary transient temporary transient set critical value of gathering of the described sub-block of upgrading once again meets described named aggregate critical value;
When the temporary transient set critical value of the temporary transient set of aforementioned sub-block meets described set critical value, then the value of the temporary transient set of described sub-block is appointed as the value of change sub-block set; And
Get back to previous steps, will temporarily gather sub-block that downside connects in sub-block described in the described frame and add and upgrade described sub-block and temporarily gather, so go round and begin again.
13. the live transmission method of monitor video image as claimed in claim 12, it is characterized in that, the manufacture method of described change sub-block set, comprise: when the temporary transient set critical value of the temporary transient set of the sub-block of aforementioned adding right side connexon block did not meet described named aggregate critical value, the value that then will change the sub-block set was appointed as the value that described sub-block is temporarily gathered.
14. live transmission method as claim 12 or 13 described monitor video images, it is characterized in that, the manufacture method of described change sub-block set, comprise: comprise sub-block that the set of described change sub-block is connected with described change sub-block set right side and temporarily gather and do not meet described named aggregate critical value when one, and another comprises described change sub-block set and does not also meet described named aggregate critical value with the temporary transient set of sub-block that described change sub-block set downside is connected, and then described change sub-block set completes.
15. the RTTS of a monitor video image comprises:
One main control end;
One network system; And
One controlled terminal, it is characterized in that, described controlled terminal is by seeking benchmark change sub-block in the frame as initial point, other sub-block in the particular range in the described frame is carried out at least one Rule of judgment, so that the relative numbering of described benchmark change sub-block and the numbering that meets other sub-block of aforementioned Rule of judgment are made a change sub-block set, and described change sub-block set is encoded, and described main control end is given in the described change sub-block set transmission after will encoding.
16. the RTTS of monitor video image as claimed in claim 15 is characterized in that, described controlled terminal transmits the numbering of each these change sub-block in the corresponding described change sub-block set to described main control end.
17. the RTTS of monitor video image as claimed in claim 16 is characterized in that, described main control end makes the described change sub-block that these transmit replace the sub-block that has identical numbering in the described frame of a monitoring according to the numbering that transmits.
18. the RTTS of monitor video image as claimed in claim 15 is characterized in that, described these change sub-block in the set of described change sub-block are to link mutually in described frame and shape is a rectangular arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031070914A CN1527541A (en) | 2003-03-05 | 2003-03-05 | Real-time transmission method and system monitoring video image |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031070914A CN1527541A (en) | 2003-03-05 | 2003-03-05 | Real-time transmission method and system monitoring video image |
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| CN1527541A true CN1527541A (en) | 2004-09-08 |
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| CNA031070914A Pending CN1527541A (en) | 2003-03-05 | 2003-03-05 | Real-time transmission method and system monitoring video image |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082989B (en) * | 2006-05-29 | 2011-05-18 | 联咏科技股份有限公司 | Method and device for area intercepting encode |
| CN103179384A (en) * | 2013-03-21 | 2013-06-26 | 鸿富锦精密工业（深圳）有限公司 | Video data processing system for video monitoring and video broadcasting system |
-
2003
- 2003-03-05 CN CNA031070914A patent/CN1527541A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082989B (en) * | 2006-05-29 | 2011-05-18 | 联咏科技股份有限公司 | Method and device for area intercepting encode |
| CN103179384A (en) * | 2013-03-21 | 2013-06-26 | 鸿富锦精密工业（深圳）有限公司 | Video data processing system for video monitoring and video broadcasting system |
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