CN109151342A - A kind of distributed video display methods and device - Google Patents
A kind of distributed video display methods and device Download PDFInfo
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- CN109151342A CN109151342A CN201810794384.7A CN201810794384A CN109151342A CN 109151342 A CN109151342 A CN 109151342A CN 201810794384 A CN201810794384 A CN 201810794384A CN 109151342 A CN109151342 A CN 109151342A
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- region
- picture unit
- lap
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- video flowing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
Abstract
The invention discloses a kind of distributed video display methods, comprising: obtains the image resolution ratio in the region to be shown that user inputs on display splicing wall；Calculate the ratio of the image resolution ratio in standard picture resolution ratio and region to be shown；Standard picture resolution ratio is the image resolution ratio for the original video stream that input node machine is got；When ratio is less than threshold value, control obtains the first video flowing with the corresponding output node machine of the picture unit of lap with region to be shown from input node machine；When ratio is greater than or equal to threshold value, control obtains the second video flowing with the corresponding output node machine of the picture unit of lap with region to be shown from input node machine；Wherein, the image resolution ratio of the second video flowing is lower than the image resolution ratio of the first video flowing.The present invention can efficiently reduce the transmission bandwidth of video data, reduce volume of transmitted data, and then reduce data transmission delay and equipment cost.The invention also proposes a kind of distributed video display devices.
Description
Technical field
The present invention relates to video display technology fields, and in particular to a kind of distributed video display methods and device.
Background technique
Existing distributed video display system is generally included for video acquisition, the input node machine of compressed encoding, use
In the data switching exchane of data exchange, the output node machine for decoding, exporting display and for the control server of control.
As shown in Figure 1, being as shown in the figure the display splicing wall that image resolution ratio is 7680 × 2160, each solid line grid indicates one in figure
Picture unit, the image resolution ratio of each picture unit are 1920 × 1080, and the video of each picture unit is saved by an output
Point machine decoding shows that the display splicing wall in figure includes the picture unit of the corresponding control of 8 output node machines.Inventors have found that
In actual use, distributed video display system usually requires to show multichannel input signal in a picture unit, such as logical
The display splicing wall crossed in Fig. 1 shows 16 tunnels or 32 tunnel input signals, at this point, each picture unit then needs to show that 4 tunnels input
Signal.In the prior art frequently with following methods: output node machine obtains 16 tunnels or 32 tunnel signal resolutions are 1920 × 1080
Input signal, and be used to show that the resolution ratio in the region to be shown of input signal all the way to only have 960x540, it is therefore desirable to often
Input signal can be just shown in corresponding display area after carrying out image down all the way, final to realize in a picture unit
Show the purpose of 4 tunnel input signals.When needing to export the input signal that 32 tunnel image resolution ratios are 1920 × 1080, every defeated
Egress machine needs to receive 4 tunnel, 1920 × 1080 input signal, further according to every road input signal image resolution ratio be 960 ×
540 pairs of every road outputs are decoded, compress, showing.
In this case, it is 1920 that each output node machine of display splicing wall, which just needs to decode multiway images resolution ratio,
× 1080 video code flow.In order to decode the video code flow of multichannel high image resolution simultaneously, output node machine needs to be equipped with
Large video decoding chip, somewhat expensive；Meanwhile transmitting the high-resolution vision signal of multichannel and needing a large amount of transmission bandwidth,
Volume of transmitted data is increased, data transmission delay is increased.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of distributed video display methods and devices, can be effectively
The transmission bandwidth of video data is reduced, reduces volume of transmitted data, and then reduce data transmission delay and equipment cost.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of distributed video display methods, comprising:
Obtain the image resolution ratio in the region to be shown that user inputs on display splicing wall；The display splicing wall includes
The picture unit of the corresponding control of several output node machines；
Calculate the ratio of the image resolution ratio in standard picture resolution ratio and the region to be shown；The standard picture is differentiated
Rate is the image resolution ratio for the original video stream that input node machine is got；
When the ratio is less than threshold value, control has the picture unit of lap corresponding with the region to be shown
Output node machine obtains the first video flowing from the input node machine；
When the ratio is greater than or equal to threshold value, control has the picture unit of lap with the region to be shown
Corresponding output node machine obtains the second video flowing from the input node machine；
Wherein, the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing.
It is described when the ratio is less than threshold value in a kind of optional embodiment, control and the region to be shown
The corresponding output node machine of picture unit with lap obtains the first video flowing from the input node machine, comprising:
When the ratio is less than threshold value, judgement has the number of the picture unit of lap with the region to be shown
Whether 1 is greater than；
When the number for the picture unit for determining to have lap with the region to be shown is not more than 1, control and institute
State region to be shown with lap the corresponding output node machine of picture unit obtained from the input node machine it is original
Video flowing；
Determine with the region to be shown have lap picture unit number be greater than 1 when, control with it is described
There is the corresponding output node machine of picture unit of lap to obtain original view from the input node machine in region to be shown
Video flowing corresponding with the lap in frequency stream.
It is described when the ratio is less than threshold value in a kind of optional embodiment, control and the region to be shown
The corresponding output node machine of picture unit with lap is after obtaining the first video flowing in the input node machine, also
Include:
The overlapping region information for obtaining the picture unit Yu the region to be shown, calculates the reality of the picture unit
Display area；
According to the actual displayed region of the picture unit, controlling the corresponding output node machine of the picture unit will be described
First video flowing zooms in and out display.
In a kind of optional embodiment, described when the ratio is greater than or equal to threshold value, control is with described to aobvious
Show that there is the corresponding output node machine of picture unit of lap to obtain the second video flowing from the input node machine in region
Later, further includes:
Whether the number of picture unit of the judgement with the region to be shown with lap is greater than 1；
When the number of the picture unit with the region to be shown with lap is not more than 1, according to the picture
The actual displayed region of unit, control the corresponding output node machine of the picture unit second video flowing is zoomed in and out it is aobvious
Show；
When the number of the picture unit with the region to be shown with lap is greater than 1, control is with described to aobvious
Show that region has the corresponding output node machine of picture unit of lap according to the lap from described the got
The video flowing of corresponding part is cut out in two video flowings, and according to the actual displayed region of the picture unit, by described from obtaining
The video flowing that corresponding part is cut out in second video flowing got zooms in and out display.
In a kind of optional embodiment, it is original that second video flowing is that the compression input node machine is got
The video flowing of video flowing.
In order to reach identical purpose, another aspect of the present invention also proposed a kind of distributed video display device, comprising:
Display area obtains module, the image resolution in the region to be shown inputted on display splicing wall for obtaining user
Rate；The display splicing wall includes the picture unit of the corresponding control of several output node machines；
Ratio calculation module, the ratio of the image resolution ratio for calculating standard picture resolution ratio and the region to be shown
Value；The standard picture resolution ratio is the image resolution ratio for the original video stream that input node machine is got；
First data acquisition module, for when the ratio is less than threshold value, control to have weight with the region to be shown
The corresponding output node machine of picture unit of folded part obtains the first video flowing from the input node machine；
Second data acquisition module, for controlling and the region to be shown when the ratio is greater than or equal to threshold value
The corresponding output node machine of picture unit with lap obtains the second video flowing from the input node machine；
Wherein, the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing.
In a kind of optional embodiment, first data acquisition module includes:
Quantity judging unit, for when the ratio is less than threshold value, judgement to have overlapping portion with the region to be shown
Whether the number of the picture unit divided is greater than 1；
First data capture unit, in the picture unit for determining that there is lap with the region to be shown
When number is no more than 1, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from described
Original video stream is obtained in input node machine；
Second data capture unit, in the picture unit for determining that there is lap with the region to be shown
When number is greater than 1, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from described defeated
Video flowing corresponding with the lap in original video stream is obtained in ingress machine.
In a kind of optional embodiment, described device further include:
Display area computing module, for obtaining the overlapping region information of the picture unit Yu the region to be shown,
Calculate the actual displayed region of the picture unit；
It is corresponding to control the picture unit for the actual displayed region according to the picture unit for first display module
Output node machine first video flowing is zoomed in and out into display.
In a kind of optional embodiment, described device further include:
Quantity judgment module, whether the number of the picture unit for judging to have lap with the region to be shown
Greater than 1；
Second display module, for being not more than in the number of the picture unit with the region to be shown with lap
When 1, according to the actual displayed region of the picture unit, the corresponding output node machine of the picture unit is controlled by described second
Video flowing zooms in and out display；
Third display module, for being greater than 1 in the number of the picture unit with the region to be shown with lap
When, control and the region to be shown are with the corresponding output node machine of the picture unit of lap according to the lap
The video flowing of corresponding part is cut out from second video flowing got, and according to the actual displayed of the picture unit
The video flowing that corresponding part is cut out from second video flowing got is zoomed in and out display by region.
In a kind of optional embodiment, it is original that second video flowing is that the compression input node machine is got
The video flowing of video flowing.
Compared with the prior art, a kind of distributed video display methods provided by the invention and device, wherein method include:
Obtain the image resolution ratio in the region to be shown that user inputs on display splicing wall；The display splicing wall includes several outputs
The picture unit of the corresponding control of Node station；Calculate the ratio of the image resolution ratio in standard picture resolution ratio and the region to be shown
Value；The standard picture resolution ratio is the image resolution ratio for the original video stream that input node machine is got；It is small in the ratio
When threshold value, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from the input
The first video flowing is obtained in Node station；When the ratio is greater than or equal to threshold value, control has weight with the region to be shown
The corresponding output node machine of picture unit of folded part obtains the second video flowing from the input node machine；Wherein, described
The image resolution ratio of two video flowings is lower than the image resolution ratio of first video flowing.It, can be defeated according to user by above method
The video flowing of the different image resolution ratio of the acquiring size of the image resolution ratio in the region to be shown entered；When the figure in region to be shown
When being greater than certain value as resolution ratio, input node machine obtains biggish first video flowing of image resolution ratio；When region to be shown
When image resolution ratio is less than or equal to certain value, input node machine obtains lesser second video flowing of image resolution ratio；By pre-
The image resolution ratio for first treating display area is judged, when the image resolution ratio in region to be shown is met certain condition, to
Input node machine transmits lesser second video flowing of image resolution ratio, efficiently reduces the transmission bandwidth of video data, reduces number
According to transmission quantity, and then data transmission delay is reduced, and when input node machine shows multiple signals at the same time, need to only decode multichannel point
It distinguishes lesser second video flowing in road, reduces the requirement of operation chip, thereby reduce cost of equipment.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the structural schematic diagram of display splicing wall in the prior art；
Fig. 2 is a kind of flow diagram of distributed video display methods provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram that display splicing wall in the embodiment of the present invention shows multiple input signals；
Fig. 4 is a kind of structural schematic diagram of distributed video display device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 2, it is a kind of flow diagram of distributed video display methods provided in an embodiment of the present invention.This
Inventive embodiments provide a kind of distributed video display methods, comprising steps of
S1, the image resolution ratio for obtaining the region to be shown that user inputs on display splicing wall；The display splicing wall
Picture unit including the corresponding control of several output node machines；
S2, the ratio for calculating standard picture resolution ratio with the image resolution ratio in the region to be shown；The standard picture
Resolution ratio is the image resolution ratio for the original video stream that input node machine is got；
S3, the ratio be less than threshold value when, control with the region to be shown have lap picture unit pair
The output node machine answered obtains the first video flowing from the input node machine；
S4, the ratio be greater than or equal to threshold value when, control with the region to be shown have lap picture
The corresponding output node machine of unit obtains the second video flowing from the input node machine；
Wherein, the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing.
Specifically, the step S1 is that user inputs the origin coordinates in region to be shown on display splicing wall and terminates seat
Mark, according to the region to be shown of the origin coordinates and terminating coordinates construction rectangle；It is described to be shown according to what is constructed
Region calculates the pixel in the region to be shown, obtains the image resolution ratio in the region to be shown.
Wherein, the region to be shown according to the origin coordinates and terminating coordinates construction rectangle includes:
First end point is constructed, the abscissa of the first end point is identical as the abscissa of the origin coordinates, and described first
The ordinate of endpoint is identical as the ordinate of the terminating coordinates；
The second endpoint is constructed, the abscissa of second endpoint is identical as the abscissa of the terminating coordinates, and described second
The ordinate of endpoint is identical as the ordinate of the origin coordinates；
The rectangle region constituted with the origin coordinates, the first end point, the terminating coordinates and second endpoint
Domain is as the region to be shown.
In the present embodiment, the input node machine is handled video data for different figures after collecting video data
As the first video flowing and the second video flowing of resolution ratio, when the image resolution ratio of standard picture resolution ratio and the region to be shown
Ratio when being less than threshold value, indicate that the image resolution ratio in the region to be shown is greater than certain value, that is to say, that described to be shown
Region then has the corresponding output of the picture unit of lap with the region to be shown to the more demanding of image resolution ratio
Node station needs to obtain higher first video flowing of image resolution ratio as data source；When standard picture resolution ratio and it is described to
When the ratio of the image resolution ratio of display area is greater than or equal to threshold value, indicate that the image resolution ratio in the region to be shown is less than
Or be equal to certain value, that is to say, that requirement of the region to be shown to image resolution ratio is lower, then with the region to be shown
The corresponding output node machine of picture unit with lap can directly acquire lower second video flowing of image resolution ratio and make
For data source；Since the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing, thus
It is smaller than transmitting the transmission bandwidth that first video flowing needs to transmit second video flowing, volume of transmitted data is less, in turn
Data transmission delay can be reduced；Meanwhile the second video flowing ratio decoder compression first view is compressed in the decoding of output node machine
The operand that frequency stream needs is lower thus relatively low to the requirement of the arithmetic speed of output node machine, and then can be matched using lower
The operation chip set reduces cost of equipment.
In a kind of optional embodiment, the step S3 includes:
When the ratio is less than threshold value, judgement has the number of the picture unit of lap with the region to be shown
Whether 1 is greater than；
When the number for the picture unit for determining to have lap with the region to be shown is not more than 1, control and institute
State region to be shown with lap the corresponding output node machine of picture unit obtained from the input node machine it is original
Video flowing；
Determine with the region to be shown have lap picture unit number be greater than 1 when, control with it is described
There is the corresponding output node machine of picture unit of lap to obtain original view from the input node machine in region to be shown
Video flowing corresponding with the lap in frequency stream.
Since the region to be shown is not limited in a picture unit, the region to be shown there may be
The case where " collapse picture unit ", i.e., the described region to be shown include all or part of multiple picture units.In the present embodiment,
First video flowing includes the partial video stream in original video stream and original video stream, each section in the original video stream
Video flowing combination can form complete original video stream.Although the partial video stream in the original video stream only includes the original
The part of beginning video flowing, but the image resolution ratio of the partial video stream in the original video stream and original video stream is identical, because
And the image resolution ratio of the partial video stream in the original video stream is equally higher than the image resolution ratio of second video flowing.
When the number for the picture unit for determining to have lap with the region to be shown is not more than 1, that is, illustrate described to be shown
Region is included in a picture unit, i.e. the complete video image that a picture unit shows the input node machine, because
And control with the region to be shown with the corresponding output node machine of the picture unit of lap from the input node machine
Middle acquisition original video stream, with by receiving, decoding the original video stream, to show that the input node machine is got complete
Video image；When the number for the picture unit for determining to have lap with the region to be shown is greater than 1, that is, illustrate institute
Region to be shown is stated included in multiple picture units, i.e., there is each picture unit of lap with the region to be shown
The partial video image of the input node machine is shown respectively, thus controls the picture that there is lap with the region to be shown
Unit corresponding output node machine in face obtains the corresponding video image of the lap from the input node machine, to pass through
The input is combined into the partial video image that there is each picture unit of lap to show in the region to be shown to save
The complete video image of point machine acquisition, in this case, since the corresponding input node machine of each picture unit is equal
The partial video stream in original video stream is only transmitted, transmitted data amount is few, helps to reduce data transmission delay and installation cost
With.
Specifically, when the number in the picture unit for determining to have lap with the region to be shown is greater than 1,
Control and the region to be shown are with the corresponding output node machine of the picture unit of lap from the input node machine
Obtain video flowing corresponding with the lap in original video stream, comprising:
Determine with the region to be shown have lap picture unit number be greater than 1 when, determine it is each with
The region to be shown has the overlapping region in the picture unit of lap in the relative position of the picture unit；
Have the picture unit of lap to the region carry out to be shown area with the region to be shown according to each
Domain divides, forming region division information；
The partition information is transmitted to the input node machine, so that the output node machine is according to the region
The original video stream is divided into several initial protion video flowings by division information；
Control and the region to be shown are with the corresponding output node machine of the picture unit of lap from the input
The initial protion video flowing of Node station acquisition corresponding part.
In a kind of optional embodiment, after the step S3, further comprise the steps of:
S5, the overlapping region information for obtaining the picture unit and the region to be shown, calculate the picture unit
Actual displayed region；
S6, the actual displayed region according to the picture unit, controlling the corresponding output node machine of the picture unit will
First video flowing zooms in and out display.
In display, the output node machine is also needed according to the actual displayed region of the picture unit to described first
Video flowing zooms in and out display, to achieve the purpose that show specified video image in limited area.Those skilled in the art
It is found that controlling the corresponding output node machine of the picture unit first video flowing scaling is aobvious when the ratio is greater than 1
Show；When the ratio is equal to 1, controls the corresponding output node machine of the picture unit and do not reduce first video flowing not
Amplification display；When the ratio is less than 1, the corresponding output node machine of the picture unit is controlled by first video streaming
Big display.But the video image of the first video flowing for being possible to and getting due to the shape in the region to be shown of user's input
Shape is different, it is therefore desirable in conjunction with the actual displayed region of the picture unit, to calculate the scaling of output node machine, institute
Stating scaling includes lateral scaling and longitudinal scaling.
In a kind of optional embodiment, after the step S4, further comprise the steps of:
Whether the number of the picture unit of S7, judgement with the region to be shown with lap is greater than 1；
S8, with the region to be shown have lap picture unit number be not more than 1 when, according to the picture
The actual displayed region of face unit controls the corresponding output node machine of the picture unit and zooms in and out second video flowing
Display；
S9, with the region to be shown have lap picture unit number be greater than 1 when, control with it is described to
Display area has the corresponding output node machine of picture unit of lap according to the lap described in get
Cut out the video flowing of corresponding part in second video flowing, and according to the actual displayed region of the picture unit, will it is described from
The video flowing that corresponding part is cut out in second video flowing got zooms in and out display.
Since the region to be shown is not limited in a picture unit, the region to be shown there may be
The case where " collapse picture unit ", i.e., the described region to be shown include all or part of multiple picture units.In the present embodiment,
Output node machine obtains lower second video flowing of image resolution ratio, when with the region to be shown have lap
The number of picture unit when being not more than 1, that is, illustrate that the region to be shown is included in picture unit, i.e. a picture
Unit shows the complete video image of the input node machine, thus controls the output node machine according to the picture unit
Actual displayed region directly by the second video flowing Zoom display；When the picture with the region to be shown with lap
When the number of face unit is greater than 1, that is, illustrate that the region to be shown is included in multiple picture units, i.e., each picture unit is aobvious
Show the video image of the part of the input node machine, thus controls the picture list that there is lap with the region to be shown
The corresponding output node machine of member cuts out corresponding part from second video flowing got according to the lap
Video flowing, and according to the actual displayed region of the picture unit, it is cut described from second video flowing got
The video flowing of corresponding part zooms in and out display out.Picture unit actual displayed position and display content in the present embodiment are really
Determine method and show that the method for the first video flowing is identical with above by multiple picture units, will not be described in great detail herein.
In a kind of optional embodiment, it is original that second video flowing is that the compression input node machine is got
The video flowing of video flowing.Compression is to reduce the common method of image resolution ratio.
In order to be more clearly understood that the present embodiment, it is illustrated below with reference to Fig. 3 citing, Fig. 3 is the embodiment of the present invention
In display splicing wall show the schematic diagrames of multiple input signals.In figure, the image resolution ratio of each picture unit is 1920*
1080, one shares 8 picture units, respectively D1, D2, D3, D4, D5, D6, D7 and D8.The standard picture is set to differentiate
Rate is 1920*1080, and the image resolution ratio of first video flowing is 1920*1080, the image resolution of second video flowing
Rate is 960*540, sets the threshold value equal to the standard picture resolution ratio and the image resolution ratio of second video flowing
Ratio, i.e., the described threshold value are 4.
Situation one: user determine the region A to be shown of the input signal A of input node machine origin coordinates be (5800,
200), terminating coordinates are (7600,1000).
It is with (5800,200), (5800,1000), (7600,1000) according to the above- mentioned information region A to be shown
And the rectangular area of (7600,200) composition.The image resolution ratio that the region A to be shown can be calculated is (7600-5800) *
The ratio of (1000-200)=1800*800, the standard picture resolution ratio and the image resolution ratio of the region A to be shown is
(1920*1080)/(1800*800)=1.44 < 4, meanwhile, judgement has the picture of lap with the region A to be shown
Unit only has the 4th picture unit D4, thus controls the 4th output node machine corresponding with the 4th picture unit D4 from described
The first video flowing is obtained in input node machine, first video flowing is the original video stream comprising complete video image；Most
Afterwards according to the actual displayed region of the 4th picture unit, controls the 4th output node machine and scale first video
Stream, the corresponding video image of first video flowing is shown in the region to be shown.
Situation two: user determine the region B to be shown of the input signal B of input node machine origin coordinates be (960,
540), terminating coordinates are (2880,1620).
According to the above- mentioned information region B to be shown be with (960,540), (960,1620), (2880,540) with
And the rectangular area of (2880,1620) composition.The image resolution ratio that the region B to be shown can be calculated is (2880-960) *
The ratio of (1620-540)=1920*1080, the standard picture resolution ratio and the image resolution ratio of the region B to be shown is
(1920*1080)/(1920*1080)=1 < 4, meanwhile, judgement has the picture list of lap with the region B to be shown
Member has the first picture unit D1, the second picture unit D2, the 5th picture unit D5 and a 6th picture unit D6, thus control with
The corresponding first output node machine of the first picture unit D1, the second output node corresponding with the second picture unit D2
Machine and the corresponding 5th output node machine of the 5th picture unit D5 and with the 6th picture unit D6 the corresponding 6th
Output node machine obtains the first video flowing of respective part from the input node machine respectively, according to first video flowing
The region B to be shown by the first picture unit D1, the second picture unit D2, the 5th picture unit D5 and
The original video stream of input node machine is divided into the four original views in tunnel part by the area information that the 6th picture unit D6 is divided
Frequency flows, the first output node machine, the second output node machine, the 5th output node machine and the 6th output
Node station obtains the part original video stream of corresponding part from input node machine respectively, to pass through aforementioned four output node machine
The video image for showing corresponding part, forms the collected original video image of the input node machine, due to the standard
The ratio of image resolution ratio and the image resolution ratio of the region B to be shown is 1, and the pixel specification and standard in region to be shown
The pixel specification of image is identical, because being shown after can directly decoding without zooming in and out processing to first video flowing.
Situation three: user determine the region C to be shown of the input signal C of input node machine origin coordinates be (6800,
1700), terminating coordinates are (7600,2100).
According to the above- mentioned information region C to be shown be with (6800,1700), (6800,2100), (7600,
1700) and (7600,2100) composition rectangular area.The image resolution ratio that the region B to be shown can be calculated is (7600-
6800) image resolution ratio of * (2100-1700)=800*400, the standard picture resolution ratio and the region B to be shown
Ratio is (1920*1080)/(800*400)=6.48 > 4, meanwhile, judgement has lap with the region C to be shown
Picture unit only has the 8th picture unit D8, thus control the 8th output node machine corresponding with the 8th picture unit D8 from
Obtain the second video flowing in the input node machine, it is original that second video flowing is that the compression input node machine is got
The video flowing of video flowing；Finally according to the actual displayed region of the 8th picture unit, the 8th output node machine is controlled
Second video flowing is compressed, the corresponding video image of second video flowing is shown in the region to be shown.
Situation four: user determine the region D to be shown of the input signal D of input node machine origin coordinates be (4000,
800), terminating coordinates are (4800,1300).
It is with (4000,800), (4000,1300), (4800,800) according to the above- mentioned information region D to be shown
And the rectangular area of (4800,1300) composition.The image resolution ratio that the region D to be shown can be calculated is (4800-4000) *
The ratio of (1300-800)=800*500, the standard picture resolution ratio and the image resolution ratio of the region B to be shown is
(1920*1080)/(800*500)=5.18 > 4, meanwhile, judgement has the picture list of lap with the region D to be shown
Member has third picture unit D3 and the 7th picture unit D7, thus it is defeated to control third corresponding with the third picture unit D3
Egress machine and the 7th output node machine corresponding with the 7th picture unit D7 are obtained from the input node machine respectively
The second video flowing is taken, second video flowing is the video flowing for the original video stream that the compression input node machine is got, then
According to the actual displayed region of the third picture unit and the 7th picture unit, the third output node machine and institute are controlled
It states the 7th output node machine and scales second video flowing, and according to the region D to be shown by the third picture unit D3
And the area information that the 7th picture unit D7 is divided is separated out corresponding part from second video flowing segmentation respectively
Video image, with by showing that the video image of respective part forms complete video image respectively.
It should be noted that the different input signals on the mosaic display screen are obtained by different input node machines respectively
It takes.
It is understood that four kinds of situations listed above be in order to more preferably illustrate the embodiment of the embodiment of the present invention and
Four kinds enumerated use scene, rather than the embodiment of the present invention all uses scene.
Compared with the prior art, a kind of distributed video display methods provided by the invention, comprising: obtain user and showing
The image resolution ratio in the region to be shown inputted on combination；The display splicing wall includes the corresponding control of several output node machines
Picture unit；Calculate the ratio of the image resolution ratio in standard picture resolution ratio and the region to be shown；The standard picture
Resolution ratio is the image resolution ratio for the original video stream that input node machine is got；The ratio be less than threshold value when, control with
There is the corresponding output node machine of picture unit of lap the is obtained from the input node machine in the region to be shown
One video flowing；When the ratio is greater than or equal to threshold value, control has the picture list of lap with the region to be shown
The corresponding output node machine of member obtains the second video flowing from the input node machine；Wherein, the image of second video flowing
Resolution ratio is lower than the image resolution ratio of first video flowing.By above method, the region to be shown that can be inputted according to user
Image resolution ratio the different image resolution ratio of acquiring size video flowing；When the image resolution ratio in region to be shown is greater than one
When definite value, input node machine obtains biggish first video flowing of image resolution ratio；When the image resolution ratio in region to be shown is less than
Or when being equal to certain value, input node machine obtains lesser second video flowing of image resolution ratio；By treating display area in advance
Image resolution ratio judged, when the image resolution ratio in region to be shown is met certain condition, to input node machine transmit
Lesser second video flowing of image resolution ratio efficiently reduces the transmission bandwidth of video data, reduces volume of transmitted data, and then drop
Low data transmission delay, and when input node machine shows multiple signals at the same time, it need to only decode multichannel and differentiate road lesser second
Video flowing reduces the requirement of operation chip, thereby reduces cost of equipment.
In order to reach identical purpose, another aspect of the present invention also proposed a kind of distributed video display device.It please join
Fig. 4 is read, is a kind of structural schematic diagram of distributed video display device provided in an embodiment of the present invention.Described device includes:
Display area obtains module 1, the image point in the region to be shown inputted on display splicing wall for obtaining user
Resolution；The display splicing wall includes the picture unit of the corresponding control of several output node machines；
Ratio calculation module 2, the ratio of the image resolution ratio for calculating standard picture resolution ratio and the region to be shown
Value；The standard picture resolution ratio is the image resolution ratio for the original video stream that input node machine is got；
First data acquisition module 3, for when the ratio is less than threshold value, control to have weight with the region to be shown
The corresponding output node machine of picture unit of folded part obtains the first video flowing from the input node machine；
Second data acquisition module 4, for controlling and the region to be shown when the ratio is greater than or equal to threshold value
The corresponding output node machine of picture unit with lap obtains the second video flowing from the input node machine；
Wherein, the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing.
In a kind of optional embodiment, first data acquisition module 3 includes:
Quantity judging unit, for when the ratio is less than threshold value, judgement to have overlapping portion with the region to be shown
Whether the number of the picture unit divided is greater than 1；
First data capture unit, in the picture unit for determining that there is lap with the region to be shown
When number is no more than 1, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from described
Original video stream is obtained in input node machine；
Second data capture unit, in the picture unit for determining that there is lap with the region to be shown
When number is greater than 1, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from described defeated
Video flowing corresponding with the lap in original video stream is obtained in ingress machine.
In a kind of optional embodiment, described device further include:
Display area computing module 5, for obtaining the overlapping region information of the picture unit Yu the region to be shown,
Calculate the actual displayed region of the picture unit；
It is corresponding to control the picture unit for the actual displayed region according to the picture unit for first display module 6
Output node machine first video flowing is zoomed in and out into display.
In a kind of optional embodiment, described device further include:
Quantity judgment module 7 is with the number of picture unit that the region to be shown has lap for judging
It is no to be greater than 1；
Second display module 8, it is little for the number in the picture unit with the region to be shown with lap
When 1, according to the actual displayed region of the picture unit, the corresponding output node machine of the picture unit is controlled by described
Two video flowings zoom in and out display；
Third display module 9, for being greater than 1 in the number of the picture unit with the region to be shown with lap
When, control and the region to be shown are with the corresponding output node machine of the picture unit of lap according to the lap
The video flowing of corresponding part is cut out from second video flowing got, and according to the actual displayed of the picture unit
The video flowing that corresponding part is cut out from second video flowing got is zoomed in and out display by region.
In a kind of optional embodiment, it is original that second video flowing is that the compression input node machine is got
The video flowing of video flowing.
It should be noted that a kind of distributed video display device provided in an embodiment of the present invention is for above-mentioned distributed view
In frequency displaying method, working principle and beneficial effect are corresponded in above-mentioned distributed video display methods, thus no longer superfluous
It states.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit the right of the present invention with this certainly
Range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to right of the present invention
Equivalent variations made by it is required that, still belongs to the scope covered by the invention.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Claims (10)
1. a kind of distributed video display methods characterized by comprising
Obtain the image resolution ratio in the region to be shown that user inputs on display splicing wall；The display splicing wall includes several
The picture unit of the corresponding control of output node machine；
Calculate the ratio of the image resolution ratio in standard picture resolution ratio and the region to be shown；The standard picture resolution ratio is
The image resolution ratio for the original video stream that input node machine is got；
When the ratio is less than threshold value, control is with the region to be shown with the corresponding output of the picture unit of lap
Node station obtains the first video flowing from the input node machine；
When the ratio is greater than or equal to threshold value, control has the picture unit of lap corresponding with the region to be shown
Output node machine obtain the second video flowing from the input node machine；
Wherein, the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing.
2. distributed video display methods as described in claim 1, which is characterized in that described to be less than threshold value in the ratio
When, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from the input node machine
The first video flowing of middle acquisition, comprising:
When the ratio is less than threshold value, whether the number of picture unit of the judgement with the region to be shown with lap
Greater than 1；
Determine with the region to be shown have lap picture unit number be not more than 1 when, control with it is described to
There is the corresponding output node machine of picture unit of lap to obtain original video from the input node machine for display area
Stream；
When the number for the picture unit for determining to have lap with the region to be shown is greater than 1, control is with described to aobvious
Show that there is the corresponding output node machine of picture unit of lap to obtain original video stream from the input node machine in region
In video flowing corresponding with the lap.
3. distributed video display methods as described in claim 1, which is characterized in that described to be less than threshold value in the ratio
When, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from the input node machine
After the first video flowing of middle acquisition, further includes:
The overlapping region information for obtaining the picture unit Yu the region to be shown, calculates the actual displayed of the picture unit
Region；
According to the actual displayed region of the picture unit, the corresponding output node machine of the picture unit is controlled by described first
Video flowing zooms in and out display.
4. distributed video display methods as described in claim 1, which is characterized in that described to be greater than or equal in the ratio
When threshold value, control is saved with the corresponding output node machine of the picture unit of lap from the input with the region to be shown
After obtaining the second video flowing in point machine, further includes:
Whether the number of picture unit of the judgement with the region to be shown with lap is greater than 1；
When the number of the picture unit with the region to be shown with lap is not more than 1, according to the picture unit
Actual displayed region, control the corresponding output node machine of the picture unit for second video flowing and zoom in and out display；
When the number of the picture unit with the region to be shown with lap is greater than 1, control and the area to be shown
There is the corresponding output node machine of picture unit of lap to be regarded according to the lap from described second got in domain
The video flowing of corresponding part is cut out in frequency stream, and according to the actual displayed region of the picture unit, by described from getting
Second video flowing in cut out the video flowing of corresponding part and zoom in and out display.
5. distributed video display methods as described in claim 1 or 4, which is characterized in that second video flowing is compression
The video flowing for the original video stream that the input node machine is got.
6. a kind of distributed video display device characterized by comprising
Display area obtains module, the image resolution ratio in the region to be shown inputted on display splicing wall for obtaining user；
The display splicing wall includes the picture unit of the corresponding control of several output node machines；
Ratio calculation module, the ratio of the image resolution ratio for calculating standard picture resolution ratio and the region to be shown；Institute
State the image resolution ratio that standard picture resolution ratio is the original video stream that input node machine is got；
First data acquisition module, for when the ratio is less than threshold value, control to have overlapping portion with the region to be shown
The corresponding output node machine of picture unit divided obtains the first video flowing from the input node machine；
Second data acquisition module, for when the ratio is greater than or equal to threshold value, control to have with the region to be shown
The corresponding output node machine of the picture unit of lap obtains the second video flowing from the input node machine；
Wherein, the image resolution ratio of second video flowing is lower than the image resolution ratio of first video flowing.
7. distributed video display device as claimed in claim 6, which is characterized in that the first data acquisition module packet
It includes:
Quantity judging unit, for when the ratio is less than threshold value, judgement to have lap with the region to be shown
Whether the number of picture unit is greater than 1；
First data capture unit, for determining the number of the picture unit with the region to be shown with lap not
When greater than 1, control and the region to be shown are with the corresponding output node machine of the picture unit of lap from the input
Original video stream is obtained in Node station；
Second data capture unit is big for the number in the picture unit for determining to have lap with the region to be shown
When 1, control is saved with the corresponding output node machine of the picture unit of lap from the input with the region to be shown
Video flowing corresponding with the lap in original video stream is obtained in point machine.
8. distributed video display device as claimed in claim 6, which is characterized in that described device further include:
Display area computing module is calculated for obtaining the overlapping region information of the picture unit Yu the region to be shown
The actual displayed region of the picture unit；
It is corresponding defeated to control the picture unit for the actual displayed region according to the picture unit for first display module
First video flowing is zoomed in and out display by egress machine.
9. distributed video display device as claimed in claim 6, which is characterized in that described device further include:
Quantity judgment module, for judging whether the number for the picture unit for having lap with the region to be shown is greater than
1；
Second display module, when for the number in the picture unit with the region to be shown with lap no more than 1,
According to the actual displayed region of the picture unit, the corresponding output node machine of the picture unit is controlled by second video
Stream carries out Zoom display；
Third display module, for controlling when the number of the picture unit with the region to be shown with lap is greater than 1
System and the region to be shown are with the corresponding output node machine of the picture unit of lap according to the lap from obtaining
The video flowing of corresponding part is cut out in second video flowing got, and according to the actual displayed area of the picture unit
The video flowing that corresponding part is cut out from second video flowing got is zoomed in and out display by domain.
10. the distributed video display device as described in claim 6 or 9, which is characterized in that second video flowing is compression
The video flowing for the original video stream that the input node machine is got.
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Application publication date: 20190104 |