CN101526890B - Position mapping method of display units of tiled display wall and device - Google Patents
Position mapping method of display units of tiled display wall and device Download PDFInfo
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Abstract
The invention discloses a position mapping method of display units of tiled display wall, comprising the following steps: recording logical positions of all the display units of tiled display wall and corresponding logical characteristic quantities thereof; acquiring image information of all the display units of the tiled display wall and obtaining physical positions of the display units and corresponding physical characteristic quantities thereof from the image information; matching the logical characteristic quantities and the physical characteristic quantities; judging whether the physical positions corresponding to the physical characteristic quantities are in accordance with the logical positions corresponding to the logical quantities in the mutually matched characteristic quantities, if not, updating the logical positions thereof by the physical positions corresponding to the physical characteristic quantities. The invention also discloses a system of the tiled display wall. The invention can realize automatic mapping to the physical positions and the logical positions of the display units when an access signal channel meets error, so as to lead the tiled display wall to be capable of displaying the images accurately without adjusting the access signal channel.
Description
Technical field
The present invention relates to display and video export technique field, the particularly position mapping method of the display unit of display splicing wall and device.
Background technology
At some special occasions, as occasions such as outdoor advertising, square, station, stadium, market and studio, large conference rooms, for the display effect of giant-screen is provided, and satisfy the needs that the user sees image at a distance clearly, usually large-sized display device will be installed.And current visual display unit, be difficult to accomplish so big size as televisor and display etc., so large-area display system that adopts a plurality of large-screen receivers or display to be spliced usually according to ranks, just display splicing wall (DISPLAYWALL) is formed each display device of display splicing wall and is called display unit.The application of display splicing wall is very extensive, relates to the large screen display system such as Surveillance center, dispatching center, command centre, meeting room, the displaying Room of government bodies, electric power, water conservancy, telecommunications, public security, army, People's Armed Police, railway, traffic, mining industry, the energy, iron and steel, enterprise etc.
In these applications, the display unit of display splicing wall both can be used as single screen and had used, complete demonstration piece image, and convergent-divergent, stack show arbitrarily; Also can be used as multi-screen splicing, each display unit shows a part of image, thereby helps multi-angle, perhaps function such as round Realization monitoring.
Because higher to display splicing wall dimensional requirement, this just means that display unit size strengthens or the display unit number increases.And the size of display unit is subjected to the restriction of the present art, therefore mainly satisfies the needs of large scale display splicing wall by the number that increases display unit.But the number of display unit increases, and not only makes control become complicated, requires to have more signalling channel, and can make troubles to the user installation use.Signalling channel is too many, occurs signalling channel easily and inserts dislocation, dislocation has a strong impact on the correct demonstration of image and cause display unit to show, and concerning the user, when signalling channel is too many, safeguards and correct the difficulty that also becomes.
Summary of the invention
In view of this, the present invention proposes a kind of mapping method and a kind of display splicing wall of display unit of display splicing wall, when the access signalling channel makes a mistake, physical location and logical place to display unit shine upon automatically, make the display splicing wall need not to insert just correct display image of signalling channel adjustment.
The mapping method of described display splicing wall display unit comprises the steps:
The logical place and the corresponding logical implication amount thereof of each display unit of record display splicing wall;
Obtain the image information that each display unit of display splicing wall shows, from described image information, obtain display unit physical location and corresponding physical characteristic quantity thereof;
Described logical implication amount and physical features amount are mated;
Judge that whether the physical features amount corresponding physical position logical place corresponding with the logical implication amount in the characteristic quantity that mates mutually conforms to, if do not conform to, then uses this its logical place of physical features amount corresponding physical position renewal.
Described display splicing wall system, comprise that plural display unit, a signal source generator, one are used for sending to each display unit the controller of picture signal, between controller and each display unit by with the unique corresponding signalling channel images signal of this display unit;
Described controller comprises:
The logical place module is used for the picture signal from the signal source generator is divided into a plurality of image block; By the picture signal of analysis image block, obtain the logical implication amount of each image block, the logical place of each image block is positioned, obtain display unit logical place and corresponding logical implication amount thereof;
This system also comprises:
Image collecting device is used to obtain the image information that each display unit of display splicing wall shows;
Image capturing and treating apparatus obtain display unit physical location and corresponding physical characteristic quantity thereof from the image information that described image collecting device gets access to; Receive the display unit logical location information and corresponding logical implication amount of self-controller, physical features amount and logical implication amount are carried out match search, judge whether the physical features amount corresponding physical position in the characteristic quantity that mates mutually conforms to logical implication amount counterlogic position, if do not conform to, the physical location information of display unit is replaced corresponding logical location information, and the display unit logical location information after will upgrading sends to controller.
As can be seen from the above technical solutions, the display unit physical location of the display splicing wall that the embodiment of the invention proposes and logical place be the solution of mapping automatically, the image that can show by the current screen that automatic analysis is caught, obtain the physical features amount of each display unit, mate with the logical implication amount of the display unit that obtains in the controller, the matching result of characteristic quantity is set up the mapping relations of display unit physical location and logical place, carry out the renewal of logical location information according to screen physical location and logical place mapping relations, need not change the signalling channel connection thereby be implemented in, also correcting image display position automatically, can solve the problem that connects dislocation between display unit and the signalling channel rapidly, bring convenience for user's operation and maintenance.
Description of drawings
Fig. 1 is the block diagram of the display splicing wall system of the embodiment of the invention;
Fig. 2 is the display unit physical location and the logical place mapping relations synoptic diagram of the display splicing wall of the embodiment of the invention;
Fig. 3 is for before embodiment of the invention logical place upgrades, the mapping relations synoptic diagram of display unit physical location and signalling channel label;
Fig. 4 is for after embodiment of the invention logical place upgrades, the mapping relations synoptic diagram of display unit physical location and signalling channel label;
Fig. 5 is the display unit physical location and the automatic particular flow sheet that shines upon of logical place of the display splicing wall of the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with accompanying drawing.The preferred embodiments of the present invention shown in the accompanying drawing.Yet the present invention can implement with multitude of different ways, and should not be limited to embodiment shown herein.
Fig. 1 is the display splicing wall system block diagram of the embodiment of the invention.As shown in Figure 1, signal source generator 105 is used to provide picture signal, the form of described picture signal can be video graphics array (Video Graphics Array, VGA), high-definition media interface (High-Definition MultimediaInterface, HDMI) or digital visual interface (Digital Visual Interface DVI) waits video format.The picture signal of signal source generator 105 is read in and is handled and changed by controller 130.From the conversion of the picture signal of signal source generator 105 through controller 130, become multi channel signals, that is to say that picture signal is divided into many groups, and each signalling channel is transmitted wherein set of diagrams image signal.The unique corresponding display unit of each signalling channel.
Controller 130 among the present invention comprises:
The logical place module is used to produce the logical place and the logical implication amount of display unit, possesses function and comprises: the picture signal of signal source generator 105 inputs is divided into the image block identical with the display unit number; The unique corresponding display unit of each image block by analyzing the feature of each image block, obtains the logical implication amount of this image block, the logical implication amount difference of different images block; Logical place to each image block positions then, thereby obtains display unit logical place and corresponding logical implication amount thereof.
The alleged characteristic quantity of the present invention is the coding of certain image block feature of expression.For example, the coding of the shape facility that characteristic quantity can the representative image block is that " 00000001 " representative is square as characteristic quantity, and characteristic quantity be that " 00000010 " represents circle, and characteristic quantity is that " 00000011 " represents triangle; Perhaps, characteristic quantity also can be the coding of the color character of representative image block, measures different encoded radios as feature and represents redness, yellow, green etc. respectively; Perhaps characteristic quantity also can be the coding of representative image block GTG feature etc.The characteristic quantity that the logical place module of controller 130 produces is corresponding with the logical place of display unit, is called the logical implication amount; And image capturing and treating apparatus 120 produce and the physical location characteristic of correspondence amount of display unit, are called the physical features amount.
The physical location of display unit is display unit actual residing position in the display splicing wall, can be positioned at which row, which is listed as represents.And each display unit is used for the picture signal of a signalling channel transmission is shown as image, and this parts of images of the picture signal correspondence of signalling channel transmission residing position in the image of whole display splicing wall is exactly the logical place of the display unit of this signalling channel correspondence.Under normal circumstances, the physical location of display unit should conform to logical place.
In the present invention, the shown image of each display unit of 110 pairs of display splicing walls 100 of image collecting device is gathered, and obtains the display unit corresponding image information, and determines the physical location of each display unit and the corresponding relation of physical features amount.
Usually the image information of the display splicing wall 100 of image collecting device 110 collections must be synchronous with the multi channel signals of controller 130 outputs, so that real-time correction is done in the position of current display image, the image that the misconnection of erasure signal passage is brought shows dislocation.
Image collecting device 110 can comprise one or more camera, if comprise a camera, this camera is used to gather the image information of the full screen of display splicing wall 100 so, and the physical location of different display units is positioned.If image collecting device 110 comprises two above cameras, the image information of the full screen that image collecting device 110 just can subregion collection display splicing wall 100.Do the acquisition rate that can improve the full screen image information like this.In addition, because the resolution of single camera is limited, if the area of display splicing wall 100 is bigger, the sharpness of the image information that then single camera collection arrives may be not enough, if adopt a plurality of cameras to carry out the subregion collection, then the image information collection of display splicing wall 100 can be accomplished meticulousr, more accurate so that in the follow-up flow process image information is cut apart and information extraction.In addition, if the number of camera equals the number of display unit, then each camera is with a unique corresponding display unit.
Image collecting device 110 sends the image information of the display splicing wall 100 that collects to image capturing and treating apparatus 120, the image information of being gathered by image capturing and 120 pairs of image collecting devices for the treatment of apparatus 110 is cut apart and is extracted, thereby obtains the physical location and the corresponding physical characteristic quantity of each display unit.
According to the present invention, image capturing and treating apparatus 120 have the image segmentation module, the image information that this image segmentation module is gathered image collecting device 110 is divided into a plurality of image block, and determine the pairing display unit of each image block physical location; The number of image block is determined by the display unit number of display splicing wall 100 usually.If image collecting device 110 comprises a plurality of cameras, the image information that image collecting device 110 is gathered has been divided into a plurality of parts naturally, and then the image block identical with the display unit number will further be divided and obtain to the image segmentation module of image capturing and treating apparatus 120 on this basis again; Perhaps, if the camera of image collecting device 110 is unique corresponding with display unit, then the image segmentation module of image capturing and treating apparatus 120 can no longer be divided the image information that image collecting device 110 is gathered.
Described image capturing and treating apparatus 120 can further include:;
Content processing module, the image information that is used for each image block that the image segmentation module is obtained is handled, and extracts the physical features of this image block and encodes, and obtains the physical features amount of each image block.
Dissimilar according to the feature of the image block of physical features amount representative, content processing module can also have different functions.
If the shape facility of physical features amount representative image block, then content processing module further comprises:
The target cutting unit is used for adopting the profile recognizer that the outline line of image block is discerned, and the zone that the outline line of closure is surrounded is as target, and cutting apart of target and background realized then as a setting in remaining zone in the image block;
The Shape Feature Extraction unit, the shape facility information of the resulting target of extraction target cutting unit, with the shape facility information coded representation of predesignating of target, thus the physical features amount of definite this image block.
Distribute if the GTG feature of physical features amount representative image block, then described content processing module are used for the gray scale histogram of statistical picture block, and with this gray scale histogram distribution situation as the physical features amount.For example, the horizontal ordinate of gray scale histogram is divided into a plurality of intervals, statistics falls into the ratio that each interval image-region accounts for entire image block area, with the functional unit of gained ratio as the physical features amount.
Has the both-way communication interface between image capturing and treating apparatus 120 and the controller 130, image capturing and treating apparatus 120 need by obtaining the logical place and the logical implication amount of each display unit of display splicing wall 100 in this communication interface slave controller 130 on the one hand, and logical implication amount and image capturing and treating apparatus 120 are analyzed the physical features amount that obtains mate, if coupling, then whether the logical place of decision logic characteristic quantity correspondence conforms to physical features amount corresponding physical position; Image capturing and treating apparatus 120 will feed back to controller 130 by described communication interface with the logical place of each display unit and the judged result of physical location on the other hand.Described communication interface both can be serial, also can be parallel, depended on image capturing and treating apparatus 120 and 130 quantity of information to be processed of controller and processing speed.
Image capturing and treating apparatus 120 logical place and the corresponding logical implication amount of the display unit of self-controller 130 in the future mate with physical location and corresponding physical characteristic quantity, mutually the corresponding same display unit of the physical features amount of coupling and logical implication amount; Set up the physical location of each display unit of display splicing wall and the mapping relations information between the logical place, and send this mapping relations information to controller 130 by above-mentioned communication interface, 130 pairs of described mapping relations information of controller are handled, and send the logical location information that corresponding execution command is upgraded the logical location information list.Come the label of mapping signal passage at last according to the logical location information of upgrading, thereby drive the output of multi channel signals.
Fig. 2 is a concrete example according to the mapping relations of the display unit physical message of the display splicing wall 100 of the embodiment of the invention and logical message.In this example, display splicing wall 100 comprises 12 display units, and characteristic quantity is represented the shape facility of the image block of display unit demonstration.Wherein the mapping table (calling Table A in the following text) of the physical features amount of the physical location of the display unit that obtains by image collecting device 110 and demonstration thereof is represented on the left side of Fig. 2.And the right of Fig. 2 represents that logical place module by controller 130 obtains the mapping table (calling table B in the following text) of the logical implication amount of the logical place of display unit and demonstration thereof.For the ease of the match condition between physical features amount and the logical implication amount intuitively is shown, physical features amount among Fig. 2 and logical implication amount are all represented with the figure of its coding representative.
In the test signal that controller 130 sends, the figure that different display units show has nothing in common with each other, and therefore different display units has different logical implication amounts.If the physical location of certain display unit conforms to logical place, then the position of the special pattern that shows in the Table A (for example star) in Table A should conform to the position of this special pattern in table B.
Situation shown in Figure 2 shows that the physical location that display unit is arranged does not conform to logical place.Wherein, two circles that connecting line 220 is connected, the physical features amount of expression display unit is identical with the logical implication amount, but the physical location of this display unit does not conform to logical place.Situation about not conforming to has appearred in the physical location that the star that connecting line 230 is connected is also represented display unit and logical place.
Among the present invention, 120 pairs of Table As of image capturing and treating apparatus carry out traversal search with table B and to characteristic quantity coupling, if Table A with show B in find identical characteristic quantity, just corresponding physical position and the logical place to this characteristic quantity compares.For example, search the physical features amount of representing star in Table A, writing down its physical location is A (1,1), and in table B, find the logical implication amount of the representative star that matches, and to write down its logical place be B (2,2), relatively physical location A (1,1) and logical place B (2,2), can find that both are different, need upgrade this logical place.
In Fig. 2, the physical features amount and the logical implication amount of the display unit that connecting line 210 is connected are all represented triangle, it is identical characteristic quantity, and the physical location of this display unit is A (3,1), and logical place is B (3,1), physical location and the logical place of then representing the triangle character amount mate, and the logical place of the display unit of this place correspondence does not need to upgrade so.
And the physical features amount of connecting line 220 and 230 display units that connected is identical with the logical implication amount among Fig. 2, but the physical location that shows the display unit of this characteristic quantity does not conform to logical place, then needs the logical place of the display unit at this place is upgraded.
Generally speaking, dislocation always occurs in pairs, according to the physical location of the characteristic quantity of display unit and the mapping relations of logical place, can the logical place of display unit be upgraded.In the example of Fig. 2, in table B, be that signalling channel and the coordinate of B (1,1) is that the signalling channel that B (2,2) locates exchanges to coordinate.
Display unit physical location and signalling channel label (CH1 to CH12) shine upon one by one.Fig. 3 shows before logical place upgrades, the mapping relations of display unit physical location and signalling channel label.The left side is the physical location of display unit, represents with the residing position of physical features amount that provides among Fig. 2; The right is the signalling channel label, is arranged in order from CH1 to CH12.After logical place upgraded, the mapping relations of display unit physical location and signalling channel label as shown in Figure 4.With Fig. 3 relatively, CH1 and CH6 have exchanged the position, the physical location of display unit becomes with the logical place of the physical location of the right demonstration of Fig. 2 and conforms to like this.
Display splicing wall screen physical location and the automatic specific implementation process flow diagram that shines upon of logical place that Fig. 5 proposes for the embodiment of the invention.The thought of this method is: the controller output image signal, the display unit that drives the display splicing wall shows different images.Preferably, this picture signal can be special-purpose test signal, makes the image of each display unit be easy to distinguish.On the one hand, gather the image that shows on the screen of display splicing wall, can obtain the image information of each display unit,, obtain the physical features amount of the shown image of display unit on each physical location by the image information of gathering is handled; On the other hand, the picture signal of each signalling channel is analyzed, obtained the logical implication amount of display unit on each logical place.And then above-mentioned two stack features amounts are carried out match search, thereby realize the automatic mapping of display unit logical place and physical location.
The flow process of the embodiment of the invention is applied in the Installation and Debugging process of display splicing wall, specifically, is connected by connecting line with controller at each display unit of display splicing wall and finishes, the display splicing wall is formal use before, carry out following steps:
Step 510: the image that 110 pairs of display splicing walls of image collecting device 100 show is gathered, and image information and the corresponding physical position thereof that collects passed to image capturing and treating apparatus 120.After image capturing and treating apparatus 120 receives the image information that image collecting devices 110 send here, described image information is cut apart and handled, obtain the physical location and the corresponding physical characteristic quantity of each display unit.Simultaneously, image capturing and treating apparatus 120 obtain the logical place and the corresponding logical implication amount thereof of display splicing wall 100 each display units of self-controller 130.
Step 520: 120 pairs of physical features amounts of image capturing and treating apparatus and logical implication amount are carried out match search.
Step 530: image capturing judges with treating apparatus 120 whether the physical features amount corresponding physical position logical place corresponding with the logical implication amount in the characteristic quantity that mates mutually conforms to, if then execution in step 540, otherwise execution in step 550.
Step 540: controller 130 does not upgrade the logical place of display unit.
Step 550: the logical place of controller 130 update displayed unit.Specific implementation comprises: image capturing and treating apparatus 120 send the physical location information of described display unit to controller 130, controller 130 is replaced the logical location information of described display unit correspondence with described physical location information, makes the physical location and the logical place coupling of this display unit.
After the logical location information by above-mentioned flow process update displayed unit, controller 130 arrives each display unit according to the logical place output multi channel signals of the display unit after upgrading.Controller 130 output multi channel signals can order output also can be concurrent carrying out simultaneously, if guarantee that the display image of each display unit keeps synchronously and assurance and camera collection image information synchronous.
After the above-mentioned flow process that is finished, the physical location of the display unit of display splicing wall 100 conforms to logical place.As long as the physical connection of display splicing wall 100 does not change, just need not to carry out again this flow process.If the physical connection of display splicing wall changes, only need to carry out once again this flow process and just can guarantee that the physical location of display unit conforms to logical place.What the embodiment of the invention proposed is connected the problem that misplaces in order to solve display unit with signalling channel, and the method and apparatus that the display unit physical location of a kind of display splicing wall that proposes and logical place shine upon automatically, the screen image information of the current display splicing wall that can catch by automatic analysis and the characteristic quantity of zones of different image information carry out location positioning, physical location and logical place mapping relations according to each display unit of display splicing wall are carried out the renewal of logical place, thereby be implemented in the connection that to change signalling channel, also the display position of image signal correction has automatically brought convenience for user's operation and maintenance.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the mapping method of a display splicing wall display unit is characterized in that, comprises the steps:
The logical place and the corresponding logical implication amount thereof of each display unit of record display splicing wall;
Obtain the image information that each display unit of display splicing wall shows, from described image information, obtain display unit physical location and corresponding physical characteristic quantity thereof;
Described logical implication amount and physical features amount are mated;
Judge that whether the physical features amount corresponding physical position logical place corresponding with the logical implication amount in the characteristic quantity that mates mutually conforms to, if do not conform to, then uses this its logical place of physical features amount corresponding physical position renewal.
2. method according to claim 1 is characterized in that, the image information that described each display unit that obtains the display splicing wall shows comprises:
Adopt the more than two cameras subregion to gather the image of display splicing wall screen, obtain the image information that each display unit shows.
3. method according to claim 2 is characterized in that, the number of described camera equals the number of display unit, and the unique corresponding display unit of each camera.
4. method according to claim 1 is characterized in that, the described step that obtains display unit physical location and corresponding physical characteristic quantity thereof from described image information comprises:
Image information is divided into a plurality of image block, and determines the physical location of each image block, the corresponding display unit of each image block;
Image information to each image block is handled, and extracts the feature of this image block and encodes, and obtains the physical features amount of image block.
5. method according to claim 4 is characterized in that, described image information to each image block is handled, and extracts the feature of this image block and encodes, and the physical features amount that obtains image block comprises:
Adopt the profile recognizer that the outline line in the image block is discerned, the zone that the outline line of closure is surrounded is as target, and cutting apart of target and background realized then as a setting in remaining zone in the image block;
Extract the shape facility information of target, with the shape facility information coded representation of predesignating of target, thus the physical features amount of definite this image block.
6. method according to claim 4 is characterized in that, described image information to each image block is handled, and extracts the feature of this image block and encodes, and the physical features amount that obtains image block comprises:
The horizontal ordinate of gray scale histogram is divided into a plurality of intervals, the statistics fall into the ratio that each interval image-region accounts for entire image block area, with gained ratio as the physical features amount.
7. display splicing wall system, comprise that plural display unit, a signal source generator, one are used for sending to each display unit the controller of picture signal, between controller and each display unit by with the unique corresponding signalling channel images signal of this display unit; It is characterized in that described controller also comprises:
The logical place module is used for the picture signal from the signal source generator is divided into a plurality of image block; By the picture signal of analysis image block, obtain the logical implication amount of each image block, the logical place of each image block is positioned, obtain display unit logical place and corresponding logical implication amount thereof;
This system also comprises:
Image collecting device is used to obtain the image information that each display unit of display splicing wall shows;
Image capturing and treating apparatus obtain display unit physical location and corresponding physical characteristic quantity thereof from the image information that described image collecting device gets access to; Receive the display unit logical location information and corresponding logical implication amount of self-controller, physical features amount and logical implication amount are carried out match search, judge whether the physical features amount corresponding physical position in the characteristic quantity that mates mutually conforms to logical implication amount counterlogic position, if do not conform to, the physical location information of display unit is replaced corresponding logical location information, and the display unit logical location information after will upgrading sends to controller.
8. display splicing wall system according to claim 7 is characterized in that, the image block that described logical place module segmentation becomes is unique corresponding with display unit.
9. display splicing wall system according to claim 7 is characterized in that described image collecting device comprises more than two cameras.
10. display splicing wall system according to claim 9 is characterized in that, the number of the camera that described image collecting device comprises equals the number of described display unit, and the unique corresponding display unit of each camera.
11. display splicing wall system according to claim 7 is characterized in that, described image capturing and treating apparatus further comprise:
The image segmentation module is used for the image information that described image collecting device gets access to is divided into a plurality of image block, and determines the physical location information of each image block, the unique corresponding display unit of each image block;
Content processing module, the image information that is used for each image block that the image segmentation module is obtained is handled, and extracts the feature of this image block and encodes, and obtains the physical features amount of image block.
12. display splicing wall system according to claim 11 is characterized in that, described content processing module further comprises:
The target cutting unit is used for adopting the profile recognizer that the outline line of image block is discerned, and the zone that the outline line of closure is surrounded is as target, and cutting apart of target and background realized then as a setting in remaining zone in the image block;
The Shape Feature Extraction unit is used to extract the shape facility information of the resulting target of target cutting unit, with the shape facility information of target with the coded representation of predesignating, thereby determine the physical features amount of this image block.
13. display splicing wall system according to claim 11, it is characterized in that, described content processing module further comprises: be used for the horizontal ordinate of the gray scale histogram of image block is divided into a plurality of intervals, statistics falls into the ratio that each interval image-region accounts for entire image block area, with the functional unit of gained ratio as the physical features amount.
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Address after: 215301 No. 1, Longteng Road, Kunshan, Jiangsu Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301 No. 1, Longteng Road, Kunshan, Jiangsu Patentee before: Kunshan Longteng Optronics Co., Ltd. |