CN105304002B - The detection method and device of LED display stitching error - Google Patents
The detection method and device of LED display stitching error Download PDFInfo
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- CN105304002B CN105304002B CN201510689481.6A CN201510689481A CN105304002B CN 105304002 B CN105304002 B CN 105304002B CN 201510689481 A CN201510689481 A CN 201510689481A CN 105304002 B CN105304002 B CN 105304002B
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Abstract
The invention discloses a kind of detection methods and device of LED display stitching error.Wherein, this method includes：Obtain the image of the splicing regions of LED display, wherein, image is the image taken pictures to splicing regions, LED display includes the first display unit and the second display unit, splicing regions are the region that the first display unit and the second display unit splice, first display unit includes multiple first LED pixel points, and the second display unit includes multiple second LED pixel points；The first LED pixel point and the second LED pixel point are identified from image；Obtain the position of position and the second LED pixel point in the picture of the first LED pixel point in the picture；And the stitching error of the location determination LED display of the position and the second LED pixel point based on the first LED pixel point.The present invention solves the relatively low technical problem of precision of the stitching error of the LED screen got in the related technology.
Description
Technical field
The present invention relates to field of display devices, in particular to a kind of detection method of LED display stitching error and
Device.
Background technology
LED screen is formed by numerous small size unit spliceds, is that manual operation is spliced at the construction field (site), in this way
Unavoidable appearance splicing positive error and negative error have the gap between positive error, that is, unit, between adjacent two row or two portable lighters away from
From more than pel spacing, when watching image on the screen there are gap, concealed wire will produce at the gap of screen；Negative error is single
There are extruding, the distance between adjacent two row or two portable lighters to be less than pel spacing, watched on there is the screen for squeezing phenomenon between member
When image, bright line is will produce at the extrusion position of screen, to affect the display effect and display quality of LED display, is
Improve the display effect of LED, it is necessary to according to stitching error each unit of LED is adjusted, but in the prior art only
It is aobvious to LED screen still cannot to eliminate stitching error by manually estimating stitching error, since the precision manually estimated is relatively low
The influence shown.
For the relatively low technical problem of the precision of the stitching error of the LED screen got in the related technology, at present not yet
It is proposed effective solution scheme.
Invention content
An embodiment of the present invention provides a kind of detection methods and device of LED display stitching error, at least to solve phase
The relatively low technical problem of the precision of the stitching error of the LED screen got in the technology of pass.
One side according to the ... of the embodiment of the present invention provides a kind of detection method of LED display stitching error, the party
Method includes：Obtain the image of the splicing regions of LED display, wherein image is the image taken pictures to splicing regions, LED
Display screen includes the first display unit and the second display unit, and splicing regions are that the first display unit and the second display unit splice
Obtained region, the first display unit include multiple first LED pixel points, and the second display unit includes multiple second LED pixels
Point；The first LED pixel point and the second LED pixel point are identified from image；Obtain the position of the first LED pixel point in the picture
With the position of the second LED pixel point in the picture；And the position of the position and the second LED pixel point based on the first LED pixel point
Set the stitching error of determining LED display.
Further, identify that the first LED pixel point and the second LED pixel point include from image：It obtains each in image
The brightness value of a pixel；Judge whether the brightness value of pixel is more than predetermined luminance value one by one；And if the brightness of pixel
Value is more than predetermined luminance value, then identifies that pixel is the first LED pixel point or the second LED pixel point.
Further, the first LED pixel point in image and the second LED pixel point are located in the same coordinate system, obtain the
The position of position and the second LED pixel point in the picture of 1 LED pixel point in the picture includes：Obtain the first LED pixel point
The coordinate of coordinate and the second LED pixel point in a coordinate system in a coordinate system.
Further, coordinate includes abscissa and ordinate, the position based on the first LED pixel point and the second LED pixel
The stitching error of location determination LED display of point includes：At least two abscissas are filtered out from multiple first LED pixel points
Identical is third LED pixel point；Respectively at least two coordinate differences are calculated using 1 third LED pixel points as starting point
Set, wherein each coordinate difference set is identical with the same ordinate of third LED pixel point for preserving ordinate
The set of the coordinate difference of LED pixel point, coordinate difference are the difference between the abscissa of two adjacent LED pixel points, LED
Pixel includes the first LED pixel point and the second LED pixel point；It filters out in each coordinate difference set and is more than or less than in advance
If a coordinate difference of difference is error of coordinate；And according to corresponding at least two coordinate of at least two coordinate difference sets
Error determines stitching error.
Further, stitching error packet is determined according to corresponding at least two error of coordinate of at least two coordinate difference sets
It includes：Obtain the scale parameter between image and splicing regions；And proportionally at least two error of coordinate of parameter pair
Reason, obtains stitching error.
Other side according to the ... of the embodiment of the present invention provides a kind of detection device of LED display stitching error, should
Device includes：First acquisition unit, the image of the splicing regions for obtaining LED display, wherein image is to splicing regions
The image taken pictures, LED display include the first display unit and the second display unit, and splicing regions are the first display unit
The region spliced with the second display unit, the first display unit include multiple first LED pixel points, the second display unit packet
Include multiple second LED pixel points；Recognition unit, for identifying the first LED pixel point and the second LED pixel point from image；
Second acquisition unit, for obtaining the position of position and the second LED pixel point in the picture of the first LED pixel point in the picture
It sets；And determination unit, it is used for the location determination LED display of position and the second LED pixel point based on the first LED pixel point
Stitching error.
Further, recognition unit includes：First acquisition module, the brightness value for obtaining each pixel in image；
Judgment module, for judging whether the brightness value of pixel is more than predetermined luminance value one by one；Identification module, if for pixel
Brightness value is more than predetermined luminance value, then identifies that pixel is the first LED pixel point or the second LED pixel point.
Further, the first LED pixel point in image and the second LED pixel point are located in the same coordinate system, and second obtains
The unit is taken to include：Second acquisition module, for obtaining the first LED pixel point coordinate in a coordinate system and the second LED pixel point
Coordinate in a coordinate system.
Further, coordinate includes abscissa and ordinate, and determination unit includes：First screening module is used for from multiple
It is third LED pixel point that it is identical that at least two abscissas are filtered out in first LED pixel point；Computing module, for respectively with
1 third LED pixel points are that starting point calculates at least two coordinate difference sets, wherein each coordinate difference set is used
In the set for the coordinate difference for preserving ordinate LED pixel point identical with the same ordinate of third LED pixel point, coordinate
Difference is the difference between the abscissa of two adjacent LED pixel points, and LED pixel point includes the first LED pixel point and second
LED pixel point；Second screening module, for filtering out in each coordinate difference set more than or less than one of preset difference value
Coordinate difference is error of coordinate；And determining module, for being sat according at least two coordinate difference sets corresponding at least two
Mark error determines stitching error.
Further, it is determined that module includes：Acquisition submodule, for obtaining the ginseng of the ratio between image and splicing regions
Number；And computational submodule, it is handled for proportionally at least two error of coordinate of parameter pair, obtains stitching error.
In embodiments of the present invention, the image of the splicing regions of LED display is obtained, wherein image is to splicing regions
The image taken pictures, LED display include the first display unit and the second display unit, and splicing regions are the first display unit
The region spliced with the second display unit, the first display unit include multiple first LED pixel points, the second display unit packet
Include multiple second LED pixel points；The first LED pixel point and the second LED pixel point are identified from image；Obtain the first LED pictures
The position of position and the second LED pixel point in the picture of vegetarian refreshments in the picture；And the position based on the first LED pixel point and
The stitching error of the location determination LED display of second LED pixel point, to solve the LED screen got in the related technology
The relatively low technical problem of precision of the stitching error of curtain, improves the precision of the stitching error of the LED screen detected.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the detection method of LED display stitching error according to the ... of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the measuring system of one according to the ... of the embodiment of the present invention optional stitching error；
Fig. 3 a are the schematic diagrames of stitching error image according to the ... of the embodiment of the present invention；
Fig. 3 b are the schematic diagrames of one according to the ... of the embodiment of the present invention optional splicing regions；
Fig. 3 c are the schematic diagrames of another optional splicing regions according to the ... of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the light intensity of pixel in image according to the ... of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the measuring system of another optional stitching error according to the ... of the embodiment of the present invention；
Fig. 6 is the schematic diagram of the measuring system of the optional stitching error of third according to the ... of the embodiment of the present invention；
Fig. 7 is the schematic diagram of the measurement result of stitching error according to the ... of the embodiment of the present invention；And
Fig. 8 is the schematic diagram of the detection device of LED display stitching error according to the ... of the embodiment of the present invention.
Specific implementation mode
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The every other embodiment that member is obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that using in this way
Data can be interchanged in the appropriate case, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
It includes to be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment to cover non-exclusive
Those of clearly list step or unit, but may include not listing clearly or for these processes, method, product
Or the other steps or unit that equipment is intrinsic.
According to embodiments of the present invention, a kind of embodiment of the method for the detection method of LED display stitching error is provided, is needed
It is noted that step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
Middle execution, although also, logical order is shown in flow charts, and it in some cases, can be with different from herein
Sequence executes shown or described step.
Fig. 1 is the flow chart of the detection method of LED display stitching error according to the ... of the embodiment of the present invention, as shown in Figure 1,
This method comprises the following steps：
Step S102 obtains the image of the splicing regions of LED display, wherein image is to take pictures to obtain to splicing regions
Image, LED display include the first display unit and the second display unit, splicing regions be the first display unit with second show
Show that the region that unit spliced obtains, the first display unit include multiple first LED pixel points, the second display unit includes multiple
2 LED pixel points.
Step S104 identifies the first LED pixel point and the second LED pixel point from image.
Step S106 obtains the position of position and the second LED pixel point in the picture of the first LED pixel point in the picture
It sets.
Step S108, the location determination LED display of position and the second LED pixel point based on the first LED pixel point
Stitching error.
By above-described embodiment, the image of the splicing regions of LED display is obtained, wherein image is to clap splicing regions
According to obtained image, LED display includes the first display unit and the second display unit, splicing regions be the first display unit with
The region that second display unit splices, the first display unit include multiple first LED pixel points, and the second display unit includes
Multiple second LED pixel points；The first LED pixel point and the second LED pixel point are identified from image；Obtain the first LED pixel
The position of position and the second LED pixel point in the picture of point in the picture；And the position based on the first LED pixel point and
The stitching error of the location determination LED display of 2 LED pixel points, to solve the LED screen got in the related technology
Stitching error the relatively low technical problem of precision, improve the precision of the stitching error of the LED screen detected.
Specifically, the above-mentioned steps of the application can be realized by system shown in Figure 2, first be broadcast in LED screen 201
The video with significant effect is put, and installs digital single-lens reflex camera 202 in LED screen normal direction, to aobvious in screen
Show that the splicing gap 204 between unit 203 (such as the first display unit or the second display unit) is taken pictures, by what is taken pictures
Digital picture egative film is transferred to computer 205, identifies the position of splicing gap in the picture by image procossing, and pass through meter
It calculates and obtains the size in splicing gap.It should be noted that be primarily referred to as brightness value higher for the above-mentioned video with significant effect
Video.
Identify that the first LED pixel point and the second LED pixel point can be by such as in slave image in the embodiment of the present application
Lower step is realized：Obtain the brightness value of each pixel in image；It is default bright to judge whether the brightness value of pixel is more than one by one
Angle value；And if the brightness value of pixel is more than predetermined luminance value, identifies that pixel is the first LED pixel point or second
LED pixel point.
The image shot by above-mentioned digital single-lens reflex camera includes all objects of shooting area, and the application is only
It needs to handle LED pixel point therein, is labeled with the image (as shown in Figure 3a) of LED pixel point in order to obtain, it can be with
The brightness value (i.e. light intensity) of each pixel in image is analyzed, is shown in Fig. 4 to a part of region in image
Carry out that Intensity Analysis obtains as a result, the longitudinal axis in Fig. 4 indicates the light intensity of pixel, horizontal axis indicate pixel and normal away from
From the strongest pixel of middle light intensity (namely pixel more than predetermined luminance value) the i.e. LED pixel point of each pixel is (as schemed
LED1, LED2, LED3 to LEDN in 4).After LED pixel point is determined, you can according between the coordinate of LED pixel point
Difference determine stitching error.
Optionally, the first LED pixel point in image and the second LED pixel point are located in the same coordinate system, obtain first
The position of position and the second LED pixel point in the picture of LED pixel point in the picture may include：Obtain the first LED pixel
The coordinate of coordinate and the second LED pixel point in a coordinate system of point in a coordinate system.As shown in Figure 3a, LED is shown in Fig. 3 a
The first display unit 301 and the second display unit 302 of display screen, further it is shown that splicing gap 303, splicing regions 305 and
LED pixel point 304.When being calculated, the coordinate of the first LED pixel point and the second LED pixel point is obtained respectively, then basis
Coordinate difference can determine stitching error.It should be noted that merely illustrating the display of the first display unit 301 and second in Fig. 3 a
The part LED pixel point of unit 302.
Specifically, above-mentioned coordinate includes abscissa and ordinate, the position based on the first LED pixel point and the 2nd LED
The stitching error of the location determination LED display of pixel may include：At least two are filtered out from multiple first LED pixel points
Identical a abscissa is third LED pixel point；Respectively at least two are calculated using 1 third LED pixel points as starting point
Coordinate difference set, wherein each coordinate difference set is used to preserve the ordinate of ordinate and the same third LED pixel point
The set of the coordinate difference of identical LED pixel point, coordinate difference are the difference between the abscissa of two adjacent LED pixel points
Value, LED pixel point include the first LED pixel point and the second LED pixel point；Filter out be more than in each coordinate difference set or
A coordinate difference less than preset difference value is error of coordinate；And according at least two coordinate difference sets corresponding at least two
A error of coordinate determines stitching error.
Can be chosen from a row LED pixel point of the leftmost side in Fig. 3 a two be third LED pixel point, then with this two
A LED pixel point is that starting point is calculated the distance between two adjacent LEDs pixel by left and right successively, that is, calculates the 3rd LED
Coordinate difference between the LED pixel point that pixel is expert at, and all coordinate differences of the row are stored in the same coordinate difference
Set, then filters out the coordinate difference for differing larger with the numerical value of other coordinate differences (i.e. from each coordinate difference set
More than or less than the error of coordinate of preset difference value, the gauged distance between preset difference value, that is, LED pixel point), then according to seat
Error is marked to determine stitching error.
It should be noted that Fig. 3 b are the enlarged drawings of splicing regions 305 in Fig. 3 a, as shown in Figure 3b, in display unit
The distance between two LED pixel points are p (i.e. preset difference value), and LED pixel point is p/2 at a distance from the boundary of display unit,
If error occurs in splicing, gap is just will appear between two concatenation units, the length x1 in gap is the difference of error of coordinate and P
Value；It will appear situation as shown in Figure 3c if occurring squeezing when splicing, i.e., the boundary of two units is because squeeze
And be subjected to displacement, the length x2 of displacement is that the abscissa difference of two LED pixel points positioned at stitching position both ends subtracts P.
By above-described embodiment, pass through the processing to image, it may be determined that simultaneously realize stitching error in the position of stitching error
Measurement.
In an alternative embodiment, true according to corresponding at least two error of coordinate of at least two coordinate difference sets
Determining stitching error includes：Obtain the scale parameter between image and splicing regions；And proportionally parameter pair at least two is sat
Mark error is handled, and stitching error is obtained.
Specifically, if two error of coordinate are respectively x3 and x4, scale parameter k, then can be true according to following formula
Fixed corresponding stitching error f1 and f2, f1=k* (x3-p), f2=k* (x4-p), p are the normal pitch between two LED pixel points
From.
After above-mentioned stitching error f1 and f2 is determined, any position in splicing gap can be determined by following formula
The stitching error f of (ordinate of the position is y),Y1 and y2 is respectively above-mentioned two LED pixel point in formula
Ordinate.
In embodiment as shown in Figure 5 and Figure 6, can the video that computer end is LED screen screen making first be passed through into video card
It is transferred to the broadcasting of LED screen 601 after processing, then passes through digital camera (digital camera for being located at current location 605) again
It takes pictures to the splicing gap of LED screen, image procossing then is carried out to obtained image, error of coordinate is obtained and (measures
As a result), then proportionally parameter handles error of coordinate, so as to obtain stitching error, it should be noted that group
Boundary at the display unit of LED screen is uniform straight line, and when two display units splice, splicing gap is in different location
Size may differ, in order to ensure measure validity, at least need to measure two groups of splicings for each stitching position
Error information, to obtain the correspondence formula of error and gap position.When needing to measure next gap, along arrow 604
Shown in direction the digital camera on camera sliding rail 603 is moved to the next position 606, to be measured to gap 602.
The schematic diagram of the stitching error of the LED screen of one 4*4 unit is as shown in fig. 7, between unit 1 and unit 2
It is 0.1 millimeter to splice the corresponding two groups of data in gap, and the corresponding two groups of data in the gap between unit 1 and unit 3 are respectively
0.1 millimeter and 0.2 millimeter.
By above-described embodiment, every piece calculates data at two, and precise results are plotted in by screen scaled down
Synthesis drawing on, for construction personnel refer to, also screen quality is judged for reviewer, so as to further to screen
It is improved, carries high display quality.
It should be noted that for each method embodiment above-mentioned, for simple description, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should understand that, the present invention is not limited by the described action sequence because
According to the present invention, certain steps can be performed in other orders or simultaneously.Secondly, those skilled in the art should also know
It knows, embodiment described in this description belongs to preferred embodiment, and involved action and module are not necessarily of the invention
It is necessary.
The embodiment of the present invention additionally provides a kind of detection device of LED display stitching error.It should be noted that this hair
The detection device of the LED display stitching error of bright embodiment can be used for executing the LED that the embodiment of the present invention is provided and show
Shield the detection method of stitching error, the detection method of the LED display stitching error of the embodiment of the present invention can also be by this hair
The detection device of the LED display stitching error that bright embodiment is provided executes.
Fig. 8 is the schematic diagram of the detection device of LED display stitching error according to the ... of the embodiment of the present invention.As shown in figure 8,
The device may include：First acquisition unit 10, recognition unit 20, second acquisition unit 30 and determination unit 40.First obtains
Take the image of splicing regions of the unit 10 for obtaining LED display, wherein image is the figure taken pictures to splicing regions
Picture, LED display include the first display unit and the second display unit, and splicing regions are that the first display unit and the second display are single
The region that member splicing obtains, the first display unit includes multiple first LED pixel points, and the second display unit includes multiple second
LED pixel point；Recognition unit 20 from image for identifying the first LED pixel point and the second LED pixel point；Second obtains list
Member 30 is for obtaining the position of position and the second LED pixel point in the picture of the first LED pixel point in the picture；And it determines
Splicing of the unit 40 for the location determination LED display of position and the second LED pixel point based on the first LED pixel point misses
Difference.
The detection device of LED display stitching error provided by the embodiments of the present application, is obtained by first acquisition unit 10
The image of the splicing regions of LED display, wherein image is the image taken pictures to splicing regions, and LED display includes the
One display unit and the second display unit, splicing regions are the region that the first display unit and the second display unit splice,
First display unit includes multiple first LED pixel points, and the second display unit includes multiple second LED pixel points；Recognition unit
20 identify the first LED pixel point and the second LED pixel point from image；Second acquisition unit 30 obtains the first LED pixel point
The position of position and the second LED pixel point in the picture in the picture；And determination unit 40 is based on the first LED pixel point
The stitching error of the location determination LED display of position and the second LED pixel point is got in the related technology to solve
The relatively low technical problem of the precision of the stitching error of LED screen, improves the precision of the stitching error of the LED screen detected.
In the above-described embodiments, recognition unit 20 may include：First acquisition module, for obtaining each pixel in image
The brightness value of point；Judgment module, for judging whether the brightness value of pixel is more than predetermined luminance value one by one；Identification module is used
If the brightness value in pixel is more than predetermined luminance value, identify that pixel is the first LED pixel point or the second LED pixel
Point.
Optionally, the first LED pixel point in image and the second LED pixel point are located in the same coordinate system, and second obtains
Unit 30 may include：Second acquisition module, for obtaining the coordinate and the 2nd LED pictures of the first LED pixel point in a coordinate system
The coordinate of vegetarian refreshments in a coordinate system.
By above-described embodiment, pass through the processing to image, it may be determined that simultaneously realize stitching error in the position of stitching error
Measurement.
In an alternative embodiment, coordinate includes abscissa and ordinate, and determination unit 40 may include：First sieve
Modeling block is third LED pixel point for it is identical to filter out at least two abscissas from multiple first LED pixel points；Meter
Module is calculated, for calculating at least two coordinate difference sets using 1 third LED pixel points as starting point respectively, wherein
Each coordinate difference set is for preserving ordinate LED pixel point identical with the same ordinate of third LED pixel point
The set of coordinate difference, coordinate difference are the difference between the abscissa of two adjacent LED pixel points, and LED pixel point includes
First LED pixel point and the second LED pixel point；Second screening module, be more than in each coordinate difference set for filtering out or
The coordinate difference that person is less than preset difference value is error of coordinate；And determining module, for according at least two coordinate differences
Gather corresponding at least two error of coordinate and determines stitching error.
Specifically, it is determined that module may include：Acquisition submodule, for obtaining the ginseng of the ratio between image and splicing regions
Number；And computational submodule, it is handled for proportionally at least two error of coordinate of parameter pair, obtains stitching error.
By above-described embodiment, every piece calculates data at two, and precise results are plotted in by screen scaled down
Synthesis drawing on, for construction personnel refer to, also screen quality is judged for reviewer, so as to further to screen
It is improved, carries high display quality.
Modules provided in the present embodiment are identical as the application method that the corresponding step of embodiment of the method is provided, answer
It can also be identical with scene.It is noted, of course, that during the scheme that above-mentioned module is related to can be not limited to the above embodiments
Content and scene, and above-mentioned module may operate in terminal or mobile terminal, can pass through software or hardware realization.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasizes particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, for example, the unit division, Ke Yiwei
A kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
On unit.Some or all of unit therein can be selected according to the actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes：USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of detection method of LED display stitching error, which is characterized in that including：
Obtain the image of the splicing regions of LED display, wherein described image is the figure taken pictures to the splicing regions
Picture, the LED display include the first display unit and the second display unit, and the splicing regions are first display unit
The region spliced with second display unit, first display unit include multiple first LED pixel points, and described
Two display units include multiple second LED pixel points；
The first LED pixel point and the second LED pixel point are identified from described image；
Position and the second LED pixel point of the first LED pixel point in described image are obtained in described image
Position；And
The spelling of position and LED display described in the location determination of the second LED pixel point based on the first LED pixel point
Connect error；
The first LED pixel point and the second LED pixel point in described image are located in the same coordinate system, described in acquisition
Position and second LED pixel point position in described image of the first LED pixel point in described image includes：It obtains
Coordinate and second LED pixel point coordinate in the coordinate system of the first LED pixel point in the coordinate system；
The coordinate includes abscissa and ordinate, the position based on the first LED pixel point and the second LED pixel point
Location determination described in the stitching error of LED display include：At least two are filtered out from the multiple first LED pixel point
Identical abscissa is third LED pixel point；Respectively at least two are calculated as starting point using the 1 third LED pixel points
A coordinate difference set, wherein each coordinate difference set is for preserving ordinate and the same third LED pixel
The set of the coordinate difference of the identical LED pixel point of ordinate of point, the coordinate difference are two adjacent LED pixels
Difference between the abscissa of point, the LED pixel point includes the first LED pixel point and the second LED pixel point；Sieve
It is error of coordinate to select a coordinate difference in each coordinate difference set more than or less than preset difference value；And root
The stitching error is determined according to corresponding at least two error of coordinate of at least two coordinates difference set.
2. according to the method described in claim 1, it is characterized in that, identifying the first LED pixel point from described image
Include with the second LED pixel point：
Obtain the brightness value of each pixel in described image；
Judge whether the brightness value of the pixel is more than predetermined luminance value one by one；And
If the brightness value of the pixel is more than the predetermined luminance value, identify that the pixel is the first LED pictures
Vegetarian refreshments or the second LED pixel point.
3. according to the method described in claim 1, it is characterized in that, corresponding extremely according at least two coordinates difference set
Few two error of coordinate determine that the stitching error includes：
Obtain the scale parameter between described image and the splicing regions；And
It is handled according at least two error of coordinate of the scale parameter pair, obtains the stitching error.
4. a kind of detection device of LED display stitching error, which is characterized in that including：
First acquisition unit, the image of the splicing regions for obtaining LED display, wherein described image is to the splicing
The image that region is taken pictures, the LED display include the first display unit and the second display unit, and the splicing regions are
The region that first display unit splices with second display unit, first display unit includes multiple first
LED pixel point, second display unit include multiple second LED pixel points；
Recognition unit, for identifying the first LED pixel point and the second LED pixel point from described image；
Second acquisition unit, for obtaining position and second LED pixel of the first LED pixel point in described image
Position of the point in described image；And
Determination unit, for position and the second LED pixel point based on the first LED pixel point location determination described in
The stitching error of LED display；
Wherein, the first LED pixel point in described image and the second LED pixel point are located in the same coordinate system, institute
Stating second acquisition unit includes：Second acquisition module, for obtaining coordinate of the first LED pixel point in the coordinate system
With coordinate of the second LED pixel point in the coordinate system；
The coordinate includes abscissa and ordinate, and the determination unit includes：First screening module, for from the multiple the
It is third LED pixel point that it is identical that at least two abscissas are filtered out in 1 LED pixel point；Computing module, for respectively so that
Few two third LED pixel points are that starting point calculates at least two coordinate difference sets, wherein each coordinate difference
Gather the coordinate difference for preserving ordinate LED pixel point identical with the same ordinate of third LED pixel point
Set, the coordinate difference be two adjacent LED pixel points abscissa between difference, the LED pixel point
Including the first LED pixel point and the second LED pixel point；Second screening module, for filtering out each coordinate
A coordinate difference for being more than or less than preset difference value in difference set is error of coordinate；And determining module, it is used for basis
Corresponding at least two error of coordinate of at least two coordinates difference set determines the stitching error.
5. device according to claim 4, which is characterized in that the recognition unit includes：
First acquisition module, the brightness value for obtaining each pixel in described image；
Judgment module, for judging whether the brightness value of the pixel is more than predetermined luminance value one by one；And
Identification module identifies that the pixel is if the brightness value for the pixel is more than the predetermined luminance value
The first LED pixel point or the second LED pixel point.
6. device according to claim 4, which is characterized in that the determining module includes：
Acquisition submodule, for obtaining the scale parameter between described image and the splicing regions；And
Computational submodule obtains the spelling for being handled according at least two error of coordinate of the scale parameter pair
Connect error.
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