CN101183301A - Multi-screen display process and system - Google Patents
Multi-screen display process and system Download PDFInfo
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Abstract
The invention discloses a multi-screen display method, comprising the following steps: a controller obtains the viewpoint angles of various display screens and users; an image is transformed according to the viewpoint angles, and the transformed images are sent to display screens corresponding to the viewpoint angle to be displayed. The invention has the advantages that: by transforming the image adapting to various viewpoint angles, the transformed images are transmitted to the display screens to be displayed to users, so the displayed images of various display screens are ensured to be closer to the visual angle of users, and the images are more real; the problem of non-ideal display effect caused by viewpoint angles are effectively solved; the invention has vivid and distinctive display effect for three-dimensional display particularly; the invention can be embodied by arranging the angle sensors with low price, and no other hardware equipments need to be added, so the invention is economical and practical; meanwhile no extra operation needs to be performed by users, and the invention is very convenient. The invention also discloses a multi-screen display system.
Description
Technical field
The present invention relates to graphics process and multidisplay technology field, relate in particular to a kind of multi-display method and system.
Background technology
During the image of people on watching display screen, wish to obtain broad visual effect.A kind of practice is that single screen size is strengthened, this way has increased the display screen price, and the display screen of bulky also is unfavorable for moving and carrying, particularly for LCD (Liquid Crystal Display, liquid crystal display) screen also is difficult to realize from technical standpoint; The another kind of practice is to adopt multihead display, and this mode is day by day general, can enjoy and more displaying contents for the user brings wide visual field, and flexibly connect between each display screen, can fold and carry, and is very convenient.
In present multihead display, be mainly used in two aspects:
A kind ofly be, each display screen shows the different piece of identical content, and different displaying contents is spliced into a complete image.For example, the different piece that shows three-dimensional racing car scene to the game player: game player's the situation of advancing, adversary's situation and motordrome be scene on the way.
Another kind is, the content that each screen display is different, and these contents can be correlated with, also can be uncorrelated.For example, display of video streams on one side, Yi Bian edit Word document, Yi Bian the information on the network that surfs the web.
No matter which kind of mode, owing to be that a plurality of display screens are presented in face of the user simultaneously, thus generally it can be put into the U type, so that make each display screen about equally to user's distance.As Fig. 1, be a typical scene synoptic diagram of multihead display.In this scene, display screen 101, display screen 102 and display screen 103 are user's display image together, and the user watches in the dead ahead of the display screen 102 that mediates.
But this multihead display can be brought the problem of the undesirable even distortion of side screen display effect.This is because except over against user's display screen 102, and there are certain viewpoint angle in remaining display screen 101 and display screen 103 with the user, can bring visual " blind spot " to the user, thereby cause the image effect of watching undesirable.
When showing 3-D view, this problem is more outstanding especially.Because during 3-D display, " disparity barrier " that need accurately configuration to be used for shutting out the light to advance (Barrier), if viewpoint angle difference, when just the user watches display screen 101 and display screen 103 among Fig. 1, can cause the effect of disparity barrier to weaken, thereby not see that stereoeffect is next.
As seen, when the user to display screen put angle when adjusting, image display effect just is difficult to stable, the user can only accept to change because of the viewpoint angle image of variation passively, but has no idea initiatively the display effect of image to be improved.
China's application number is 00108005.9, is called the patent of " multi-display apparatus ", the vision compensation is carried out in the bonding part of flat panel display device, thereby improve the display quality of picture; And U. S. application number is 20030151562, the patent of " Computer display system using multiple screens " by name, mainly by the physical location of each display screen is set, thereby reaches good display effect.And, but all do not relate to for the problem of the display image distortion that causes because of the viewpoint angle.
Summary of the invention
The invention discloses a kind of method and system of multihead display, be used to improve the effect of multihead display, particularly solve the problem of the display image weak effect that causes owing to the viewpoint angle.
For this reason, the present invention adopts following technical scheme:
A kind of multi-display method comprises step: controller obtains each display screen and user's viewpoint angle; According to the viewpoint angle image is carried out conversion, and the image after the conversion is sent to the display screen demonstration of viewpoint angle correspondence.
Before obtaining each display screen and user's viewpoint angle, described method also comprises: mechanical speed-control device is installed on display screen, described controller provides the mechanical adjustment parameter to mechanical speed-control device, and mechanical speed-control device utilizes the mechanical adjustment parameter that the physical location of display screen is adjusted.
After mechanical speed-control device provided the mechanical adjustment parameter, described method also comprised at controller: controller is in himself inner mechanical adjustment parameter of resolving, with the benchmark of analysis result as the viewpoint angle.
Before obtaining the viewpoint angle of each display screen, described method also comprises: being provided with over against user's display screen is the benchmark of described viewpoint angle.
Be provided with after user's display screen is the coordinate basis of viewpoint angle, described method also comprises: measure over against the angle of user's display screen and other display screen; Perhaps, at setting angle induction installation on the display screen over against user's display screen, in order to automatic induction angle.
Before obtaining the viewpoint angle of each display screen, described method also comprises: the benchmark of user for described viewpoint angle is set.
The user is being set for after the coordinate basis of viewpoint angle, described method also comprises: setting angle induction installation on the user seat, and in order to automatic induction angle.
After controller received the viewpoint angle, described method also comprised: the corresponding relation of each display screen sequence number, viewpoint angular type, viewpoint angle and picture position adjusting range is set, in order to image is carried out the benchmark of conversion as controller in controller.
Before controller carried out conversion according to the viewpoint angle to image, described method also comprises: controller obtained image, and the display screen that definite image mail to.
Described viewpoint angle comprises the angle with horizontal direction, perhaps with the angle of vertical direction, perhaps with level and vertical angle.
Described controller comprises the combination of central processing unit, graphic process unit or central processing unit and graphic process unit.
Described angle induction device comprises angular transducer, camera or video camera.
Described display screen comprises LCD, flat-panel screens, plasma display, rear projection display or projector.
A kind of multihead display system comprises display screen group and controller; Described display screen group comprises at least two display screens; Described controller is used to obtain each display screen and user's viewpoint angle, and according to described viewpoint angle image is carried out conversion, and the display screen that the image after the conversion is sent to viewpoint angle correspondence is shown.
Described system also comprises mechanical speed-control device; Described mechanical speed-control device is used to receive the mechanical adjustment parameter that described controller provides, and utilizes the mechanical adjustment parameter that the physical location of display screen is adjusted.
Described system also comprises angle induction device; Described angle induction device is used to respond to display screen and user's viewpoint angle, and the viewpoint angle is offered described controller.
Described controller comprises image interception unit, mechanical parameter unit and image transforming unit; Described image interception unit is used for obtaining image from image source, and offers image transforming unit; The mechanical adjustment parameter is preserved in described mechanical parameter unit, and the mechanical adjustment parameter is offered mechanical speed-control device, as the foundation that the display screen physical position is adjusted; And, the mechanical adjustment parameter is sent to image transforming unit; Described image transforming unit is used to resolve the mechanical adjustment parameter, obtains the viewpoint angle, utilizes the viewpoint angle that the display position of image is adjusted, and adjusted image is sent to the display screen demonstration.
Described controller comprises image interception unit, angle storage unit and image transforming unit; Described image interception unit is used for obtaining image from image source, and offers image transforming unit; Described angle storage unit is used to preserve the viewpoint angle that angle induction device provides, and offers image transforming unit; Described image transforming unit utilizes the viewpoint angle that the display position of image is adjusted, and adjusted image is sent to the display screen demonstration.
Described controller also comprises the mechanical parameter unit; The mechanical adjustment parameter is preserved in described mechanical parameter unit, and the mechanical adjustment parameter is offered mechanical speed-control device, as the foundation that the display screen physical position is adjusted.
Described angle induction device comprises angular transducer, camera or video camera.
The technique effect that the present invention is brought is analyzed as follows:
(1) by image being carried out and the adaptive conversion of viewpoint angle, send the image after the conversion to display screen and be shown to the user, guaranteed that image that each display screen shows is more near user's visual angle, make image more true, solved the unfavorable problem of the display effect that causes owing to the viewpoint angle effectively;
(2) especially for 3-D display, can reach true to nature, peculiar display effect;
(3) preferably, only just can realize, not need to increase other hardware device by cheap angular transducer is installed, economical and practical; And do not need the user to carry out operation bidirectional, very convenient;
(4) alternatively, mechanical speed-control device only is installed on display screen, just can under the control of controller, be realized display screen and image are done adaptability, harmony adjustment, simple.
Description of drawings
Fig. 1 is a prior art multihead display scene synoptic diagram;
Fig. 2 is the embodiment of the invention one a multihead display scene synoptic diagram;
Fig. 3 realizes the process flow diagram of embodiment one for the present invention;
Fig. 4 is the embodiment of the invention two multihead display scene synoptic diagram;
Fig. 5 is the embodiment of the invention three multihead display scene synoptic diagram;
Fig. 6 is multihead display system architecture synoptic diagram among the present invention.
Embodiment
By in the background technology to the analysis of existing multihead display as can be known, because all there is the viewpoint angle with it in the display screen except that the user front, with regard to the problem that has caused image display effect to descend, the present invention is just from this point, by the adjustment of image being carried out at the display position of display screen adapt with the viewpoint angle, thereby reach the purpose of improving display effect, make demonstration more true.
Wherein, image is belonged to digital image processing techniques as accommodation, can be referring to " Digital Image Processing basis " book of Science Press's publication, this technology is very ripe, and the present invention does not do too much description to this.For how obtaining the viewpoint angle between display screen and the user and the flow process of entire method, then be key of the present invention.
Introduce embodiment one below in detail.
Embodiment one utilizes user and benchmark screen position relative fixed to set out, and by obtaining the angle between reference screen and the benchmark screen, and the adjustment and the demonstration that adapt with the viewpoint angle carried out in realization to image.
At first, the display screen of setting the user dead ahead is the benchmark screen, and all the other are reference screen, obtains the angle between each reference screen and the benchmark screen, and sends angle to controller; Then, when image will transmit on certain reference screen, this reference screen that the controller utilization obtains and benchmark screen angle were carried out conversion to image; At last, sending the image after the conversion to display screen shows.
Fig. 2 is a multihead display scene synoptic diagram among the present invention, and wherein, display screen 202 is positioned at user's dead ahead, and as the benchmark screen, correspondingly, display screen 201,203 is as the reference screen, and each display screen all is that vertical ground is placed; Horizontal direction and vertical direction that on behalf of benchmark, coordinate axis x, y shield 202 display planes respectively, display screen 202 is (0,0) as its acquiescence coordinate of benchmark screen.As shown in Figure 2, the benchmark screen overlaps with the y axle of reference screen, so only consider to get final product at the axial angle of x.Angle between display screen 201 and the display screen 202 is 225 °, and the angle between display screen 203 and the display screen 202 is-45 °.Angle between reference screen and the benchmark screen can comprise automatic measurement and manual measurement by measuring; Preferably, obtain by setting angle induction installation on each reference screen; Perhaps, unified each reference screen relative angle that obtains of setting angle induction installation on the benchmark screen.
After the angle that gets access between reference screen and the benchmark screen, send this angle to controller.This controller carries out conversion to the image that reference screen will show, the foundation of conversion is exactly the angle of this reference screen and benchmark screen.
As shown in Figure 3, the realization flow of embodiment one comprises:
Step 301: set a benchmark screen, the conduct except that the benchmark screen is with reference to screen; The positive display screen over against the user of general setting is the benchmark screen, and the benchmark angle X (0) of benchmark screen is set, and for example X (0) is 0 °; On behalf of this angle, X be and the axial angle of x;
Step 302: the angle X (1), the X (2) that obtain each reference screen and benchmark screen ... .X (n), wherein 1,2...n represents the reference screen sequence number; Can utilize setting angle induction installation on each reference screen, obtain each angle automatically by angle induction device;
Step 303: with X (1), X (2) ... .X (n) sends controller to;
Step 304: judge whether to pass image toward i reference screen, if having, execution in step 305, otherwise, execution in step 307;
Step 305: controller utilizes X (i) that image is carried out conversion; If X (i) is 0 °, directly transmission;
Step 306: the image after the conversion is sent to i reference screen show; Return step 304;
Step 307: finish.
Present embodiment adopts the benchmark screen as the position reference with reference to screen, and the angle of utilizing reference screen and benchmark to shield is carried out conversion to image, thereby demonstrates image near the visual angle for the user.And preferably adopt angle induction device to obtain the angle of reference screen and benchmark screen, and not only guaranteed accuracy, and very simple and convenient, do not need the user to do extra setting.
Introduce embodiment two below:
Different by the angle of obtaining reference screen and benchmark screen with embodiment one, present embodiment directly obtains the angle of user and display screen; Controller is done accommodation according to reference screen and user's angle to its image that will show, to guarantee display effect.
As shown in Figure 4, display screen 401 and display screen 402 angled user the place aheads that are placed on are because the two is similar with angle to user's relative position, so directly utilize the user as angle reference; Coordinate axis x, y are benchmark with user, represent user both sides line direction respectively, and from health to a direction, if the user rectifies and to stand or just sit, the acquiescence coordinate that just can learn him is (0,0).Can obtain, display screen 401 is 225 ° with the x axle, and display screen 402 is-45 ° with the x axle.
Angle between display screen 401 (402) and the user can comprise automatic measurement and manual measurement by measuring; Preferably, realize by setting angle induction installation on user 401 seat.
For all the other steps of embodiment two, similar with embodiment one, do not repeat them here.
Introduce embodiment three below:
Top embodiment one is that the display screen that along continuous straight runs stretches is set forth with embodiment two, and the present invention also is applicable to the multihead display that vertically stretches.
As shown in Figure 5, comprise display screen 502 as benchmark screen, with and the display screen 501,503 of both sides, also have display screen 504 up.For this multihead display, the display screen 501,503 of both sides adopts the method for above-mentioned introduction, and to the method for adjustment of display screen 504 images similarly, only determining that itself and benchmark shield or during user's angular relationship, be to determine by the angle on the y axle.Display screen 504 is 45 ° with the angle of display screen 502 on the y axle, overlaps at the x direction of principal axis.Other step and embodiment one or embodiment two are similar, do not repeat them here.
For the display screen that all has angle at x axle and y axle with benchmark screen or user, need consider the angle of both direction simultaneously, controller is when carrying out conversion to the image that mails to this display screen, and conversion is according to being the angle of x axle and y axle both direction also.
Introduce embodiment four below.
Three embodiment are different with the front, and embodiment four does not need to adopt angle induction device, controller directly within it portion the mechanical adjustment parameter is resolved, just can obtain the viewpoint angle of each display screen, thereby utilize the viewpoint angle that image is carried out corresponding conversion.
Position to display screen is adjusted, and can adopt manual mode, preferably, embodiment four installs mechanical speed-control device on display screen, this mechanical hook-up physical location to display screen under the control of controller is adjusted, thereby change has just taken place display screen and user's viewpoint angle.Specifically be, the mechanical adjustment parameter is preserved in controller inside, and this mechanical adjustment parameter can set in advance, and also can be made up of display screen sequence number, adjustment direction and adjusting range etc. user's real-time update and setting; In the time will adjusting to the position of display screen, this mechanical adjustment parameter is sent to mechanical speed-control device, drive it and carry out the adjustment action.As seen, controller is initiatively grasped the viewpoint angle of display screen, does not just need angle induction device to provide for it.Still be example with Fig. 2, controller is provided with display screen 202 and is the benchmark screen, and the mechanical adjustment parameter to display screen 201,203 is provided with respectively: display screen 201: sequence number 1, adjust direction x axle, adjust 225 ° of angles; Display screen 203: sequence number 3, adjust direction x axle, adjust angle-45 °.Controller just can be known the viewpoint angle of display screen by resolving the mechanical adjustment parameter, utilizes the viewpoint angle that image is made accommodation then.As seen, by the unified control of controller, the adjustment of display screen and image is that corresponding, coordination is carried out, and precise and high efficiency does not need the user to get involved, and is very convenient.
What specify is that the mode that the installation mechanical speed-control device is adjusted the display screen physical position is equally applicable to embodiment one to embodiment three, only still adopts angle induction device to provide the viewpoint angle to controller.
By above four embodiment as can be known, viewpoint angle among the present invention, be divided into three kinds by its type, comprise angle (x direction) with user's horizontal direction, perhaps, with the angle (y direction) of user's above-below direction, perhaps, with the angle (angle of x axle and y axle both direction) of user's level and above-below direction.
Among the present invention, image transformation is meant suitably to be adjusted the display position of image, adjusting range and display screen sequence number, viewpoint angular type, viewpoint angle have certain corresponding relation, this corresponding relation can set in advance in controller, also can upgrade according to the statistics monitored results in the certain hour.With Fig. 5 is example, and when having learnt that image will be when display screen 504 shows, controller is by searching corresponding relation, and sequence number, the viewpoint angular type that obtains display screen 504 is that y axle, angle are 45 ° and adjusting range (for example △); Utilize these correspondence relationship information, controller is adjusted accordingly the display position of image, and the image after will handling then is transferred to display screen 504.
Among the present invention, display screen comprises LCD, flat-panel screens, plasma display, rear projection display and projector etc.; The angle induction device that is installed on display screen or the user seat can be angular transducer or camera and video camera; And controller comprises central processing unit (CPU), graphic process unit (GPU), perhaps the two combination.
The invention also discloses a kind of multihead display system, as shown in Figure 6, this system comprises display screen group 601 and controller 602, controller 602 obtains the viewpoint angle of each display screen and user in the display screen group 601, and image is carried out conversion according to the viewpoint angle, at last the image after the conversion is sent to display screen and show.
Further analyze, as shown in Figure 6, controller 602 comprises image interception unit 611 and image transforming unit 612.Image interception unit 611 gets access to the image that display screen group 601 will show from image source, and resolves, determines the display screen that this image mails to; Image transforming unit 612 is carried out conversion according to the viewpoint angle of obtaining to image, and is responsible for the image after the conversion is sent to the display screen demonstration.
Preferably, controller 602 also comprises angle storage unit 613, is used to preserve the viewpoint angle that angle induction device 603 provides, and stores information such as viewpoint angle and its display screen sequence number, viewpoint angular type, picture position adjusting range simultaneously; And when getting access to image, the content of storage is offered image transforming unit 612 in image interception unit 611.Wherein, the viewpoint angular type comprises three kinds: with the angle of user's horizontal direction, with the angle of user's above-below direction and with the angle of user's level and above-below direction.
Alternatively, controller 602 comprises mechanical parameter unit 614, is used to preserve the mechanical adjustment parameter, and is responsible for this parameter is offered mechanical speed-control device 604, as display screen being carried out the foundation that physical location is adjusted.Perhaps, mechanical parameter unit 614 also is used for providing the mechanical adjustment parameter to image transforming unit 612, so that image transforming unit 612 parses the required parameters such as viewpoint angle of image transformation.
Native system is undertaken and the adaptive conversion of viewpoint angle by 602 pairs of images of controller, guaranteed that image that each display screen shows is more near user's visual angle, make image more true, solved the unfavorable problem of the display effect that causes owing to the viewpoint angle effectively.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. multi-display method is characterized in that comprising:
Controller obtains each display screen and user's viewpoint angle;
According to the viewpoint angle image is carried out conversion, and the image after the conversion is sent to the display screen demonstration of viewpoint angle correspondence.
2. multi-display method according to claim 1, before obtaining each display screen and user's viewpoint angle, described method also comprises:
Mechanical speed-control device is installed on display screen, and described controller provides the mechanical adjustment parameter to mechanical speed-control device, and mechanical speed-control device utilizes the mechanical adjustment parameter that the physical location of display screen is adjusted.
3. multi-display method according to claim 2 is characterized in that, after mechanical speed-control device provided the mechanical adjustment parameter, described method also comprised at controller:
Controller is in himself inner mechanical adjustment parameter of resolving, with the benchmark of analysis result as the viewpoint angle.
4. multi-display method according to claim 1 and 2 is characterized in that, before obtaining the viewpoint angle of each display screen, described method also comprises:
Setting is the benchmark of described viewpoint angle over against user's display screen.
5. multi-display method according to claim 4 is characterized in that, is being provided with after user's display screen is the coordinate basis of viewpoint angle, and described method also comprises:
Measurement is over against the angle of user's display screen and other display screen;
Perhaps, at setting angle induction installation on the display screen over against user's display screen, in order to automatic induction angle.
6. multi-display method according to claim 1 and 2 is characterized in that, before obtaining the viewpoint angle of each display screen, described method also comprises:
The benchmark of user for described viewpoint angle is set.
7. multi-display method according to claim 6 is characterized in that, the user is being set for after the coordinate basis of viewpoint angle, and described method also comprises:
Setting angle induction installation on the user seat is in order to automatic induction angle.
8. according to claim 1,2 or 3 described multi-display methods, it is characterized in that after controller received the viewpoint angle, described method also comprised:
The corresponding relation of each display screen sequence number, viewpoint angular type, viewpoint angle and picture position adjusting range is set, in order to image is carried out the benchmark of conversion as controller in controller.
9. multi-display method according to claim 8 is characterized in that, before controller carried out conversion according to the viewpoint angle to image, described method also comprised:
Controller obtains image, and the display screen that definite image mail to.
10. multi-display method according to claim 8 is characterized in that, described viewpoint angle comprises the angle with horizontal direction, perhaps with the angle of vertical direction, perhaps with level and vertical angle.
11. multi-display method according to claim 8 is characterized in that, described controller comprises the combination of central processing unit, graphic process unit or central processing unit and graphic process unit.
12. multi-display method according to claim 8 is characterized in that, described angle induction device comprises angular transducer, camera or video camera.
13. multi-display method according to claim 8 is characterized in that, described display screen comprises LCD, flat-panel screens, plasma display, rear projection display or projector.
14. a multihead display system is characterized in that comprising display screen group and controller;
Described display screen group comprises at least two display screens;
Described controller is used to obtain each display screen and user's viewpoint angle, and according to described viewpoint angle image is carried out conversion, and the display screen that the image after the conversion is sent to viewpoint angle correspondence is shown.
15. multihead display according to claim 14 system is characterized in that described system also comprises mechanical speed-control device;
Described mechanical speed-control device is used to receive the mechanical adjustment parameter that described controller provides, and utilizes the mechanical adjustment parameter that the physical location of display screen is adjusted.
16., it is characterized in that described system also comprises angle induction device according to claim 14 or 15 described multihead display systems;
Described angle induction device is used to respond to display screen and user's viewpoint angle, and the viewpoint angle is offered described controller.
17. multihead display according to claim 15 system is characterized in that described controller comprises image interception unit, mechanical parameter unit and image transforming unit;
Described image interception unit is used for obtaining image from image source, and offers image transforming unit;
The mechanical adjustment parameter is preserved in described mechanical parameter unit, and the mechanical adjustment parameter is offered mechanical speed-control device, as the foundation that the display screen physical position is adjusted; And, the mechanical adjustment parameter is sent to image transforming unit;
Described image transforming unit is used to resolve the mechanical adjustment parameter, obtains the viewpoint angle, utilizes the viewpoint angle that the display position of image is adjusted, and adjusted image is sent to the display screen demonstration.
18. multihead display according to claim 16 system is characterized in that described controller comprises image interception unit, angle storage unit and image transforming unit;
Described image interception unit is used for obtaining image from image source, and offers image transforming unit;
Described angle storage unit is used to preserve the viewpoint angle that angle induction device provides, and offers image transforming unit;
Described image transforming unit utilizes the viewpoint angle that the display position of image is adjusted, and adjusted image is sent to the display screen demonstration.
19. multihead display according to claim 18 system is characterized in that described controller also comprises the mechanical parameter unit;
The mechanical adjustment parameter is preserved in described mechanical parameter unit, and the mechanical adjustment parameter is offered mechanical speed-control device, as the foundation that the display screen physical position is adjusted.
20., it is characterized in that described angle induction device comprises angular transducer, camera or video camera according to claim 16,18 or 19 described multihead display systems.
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| CN110246425B (en) * | 2018-03-09 | 2021-07-09 | 深圳市奥拓电子股份有限公司 | Adjusting method for spliced bright and dark lines and LED spliced display screen |
| CN109036271A (en) * | 2018-08-17 | 2018-12-18 | 武汉华星光电半导体显示技术有限公司 | The modified method, apparatus of Curved screen bent area colour cast, storage medium and terminal |
| CN109036271B (en) * | 2018-08-17 | 2020-06-12 | 武汉华星光电半导体显示技术有限公司 | Method and device for correcting color cast of curved screen bending area, storage medium and terminal |
| CN109348019A (en) * | 2018-11-30 | 2019-02-15 | 维沃移动通信有限公司 | A kind of display methods and device |
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