CN104915922B - Splice bright concealed wire modification method - Google Patents
Splice bright concealed wire modification method Download PDFInfo
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- CN104915922B CN104915922B CN201510357954.2A CN201510357954A CN104915922B CN 104915922 B CN104915922 B CN 104915922B CN 201510357954 A CN201510357954 A CN 201510357954A CN 104915922 B CN104915922 B CN 104915922B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/14—Transformations for image registration, e.g. adjusting or mapping for alignment of images
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a kind of bright concealed wire modification method of splicing suitable for spliced display screen such as LED display, it determines two kinds of complementary screen body display unit lighting modes according to the size of concatenation unit, and the screen body display unit lighting mode control according still further to determination lights display screen so that shooting obtains two complementary target images；Carry out image procossing respectively to obtained target image afterwards and obtain the gray scale center of each display bright block, then calculate display unit spacing and splicing gap spacing again；Finally using display unit spacing and the correction coefficient of each edge display unit in the neighbouring splicing gap for splicing gap distance computation concatenation unit for modifying factor splice gap and caused by splice bright concealed wire.The present invention shields body display unit lighting mode by designing, and need to only shoot two images accurately can be modified to splicing bright concealed wire；In addition prior art can be also avoided to carry out splicing the problem of bright concealed wire repairs introduced screen body uniformity variation by full frame analysis.
Description
Technical field
It is more particularly to a kind of to splice bright concealed wire modification method the present invention relates to display control technology field.
Background technology
LED display is typically to be spliced by multiple concatenation units, due to machining essence in splicing be present
The limitation such as degree and splicing accuracy, the stitching portion between concatenation unit and concatenation unit is uneven, causes the same face in stitching portion edge
Color LED point spacing is inconsistent.In display image, stowing occurs when this spacing is more than lamp point normal pitch, when
Bright seam occurs during away from less than lamp point normal pitch, this bright seam or stowing are referred to as LED display and splice bright concealed wire, referred to as splice
Bright concealed wire.
The bright concealed wire of splicing as caused by machining etc., it is difficult to be solved by improving machining accuracy.Pass
System method splices the position of bright concealed wire by eye-observation, and correction factor/correction coefficient is given into the bright concealed wire both sides of splicing manually
LED point, by observing and correcting repeatedly, until reaching ideal situation.Not only efficiency is low for this method, will to staff
Ask high, while human eye is endangered also especially big.
In a kind of existing bright concealed wire modification method of splicing：The size of concatenation unit is unknown, to the full frame bat of LED display
Take the photograph the image that multiple dot interlaces are lighted and (are commonly called as dot interlace and play screen)；Assuming that selection 3 × 3 dot interlaces, then in requisition for shooting nine images；With
Exemplified by G primary colors (green) LED point, the LED point lighting mode of corresponding nine images is as shown in figure 1, wherein " o " represents to light
LED point, " x " represents non-lit up lamp point.Point location, which is first passed through, after nine images of acquisition determines each LED lamp point area
Domain, each LED lamp dot center coordinate is then positioned, this nine images are finally merged into one；Merging into an image
Afterwards, each LED lamp point area is calculated, correction coefficient is calculated by LED point area discrepancy.
However, for foregoing prior art, (a) it needs to shoot multiple images and then is merged into one, due to
DE Camera Shake during bat figure being present, LED point position can be offset, therefore between the LED point of the image acquisition after merging
Away from error be present, the correction coefficient being calculated is inaccurate；(b) because concatenation unit size is unknown, as long as therefore counting on two
LED lamp point area discrepancy is considered as gap being present more than certain threshold value, and is modified/corrects, therefore can be to not splicing
The position in gap is also repaired, and causes the screen body after correction of a final proof uneven；(c) LED display screen body is more big, it is required that taking the photograph
Camera distance screen body is more remote, now needs to take bigger dot interlace (such as K*K) to carry out image taking, it is therefore desirable to the image of shooting
More (K*K)；In addition, DE Camera Shake during shooting image be present, picture position can be offset, and the error of introducing is just more
Greatly.
The content of the invention
Therefore, to overcome prior art to exist the defects of and deficiency, the present invention provide a kind of bright concealed wire modification method of splicing.
Specifically, a kind of bright concealed wire modification method of splicing provided in an embodiment of the present invention, including step：(a) according to splicing
The size of multiple concatenation units in formula display screen determines to go up the more of repeated arrangement on the spliced display screen along the line of the column direction
The size of individual rectangle repeat unit, rectangle repeat unit described in each of which include multiple display units；(b) institute is lighted in control
State multiple display units of respective first corner position of multiple rectangle repeat units and form the first display bright block for shooting
First object image is obtained, and controls the multiple display lists for lighting respective second corner position of the multiple rectangle repeat unit
Member and formed second display bright block for shooting obtain the second target image, wherein first corner position and the drift angle position
Setting on the same diagonal of the rectangle repeat unit and the corresponding first display bright block and second display
Bright block non-overlapping copies；(c) image procossing is carried out respectively to the first object image and second target image to obtain respectively
The gray scale center of the individual first display bright block and each second display bright block；And (d) calculates adjacent concatenation unit
Neighbouring splicing gap each edge display unit correction coefficient for described in modifying factor splice gap and caused by spelling
Connect bright concealed wire.Wherein, step (d) specifically includes following sub-step：(d1) for the first object image and second mesh
Each displaying block row of the first display bright block or the second display bright block in each of logo image be present, utilize institute
State in displaying block row positioned at the side in the splicing gap or the first display bright blocks or two described the per two of side
Gray scale centre distance and corresponding display unit quantity between two display bright blocks obtain the display of the corresponding displaying block row
Unit spacing；(d2) it is bright using two first displays in the displaying block row respectively positioned at the both sides in the splicing gap
Gray scale centre distance and corresponding display unit quantity and the display between block or two the second display bright blocks
Unit spacing obtains the splicing gap spacing of the corresponding displaying block row；And (d3) utilizes described display unit spacing and described
Splicing gap spacing obtains the correction coefficient of multiple edge display units in the neighbouring splicing gap in the displaying block row.
In one embodiment of the invention, above-mentioned steps (d) also include sub-step：Sub-step (d1) to (d3) will be passed through
The correction coefficient of each edge display unit in the neighbouring splicing gap for the adjacent concatenation unit being calculated is using most
Small square law carries out fitting a straight line, is modified with the correction coefficient to each edge display unit.
In one embodiment of the invention, it is located at the splicing seams in the displaying block row in above-mentioned sub-step (d1)
The two first display bright blocks or two second display bright blocks of the side of gap or every side are two adjacent displays
Bright block.
In one embodiment of the invention, the neighbouring splicing seams in the displaying block row in above-mentioned sub-step (d3)
The correction coefficient coef of multiple edge display units of gapbright=1+ ((e+d)/d-1)/2, wherein e represent the corresponding display
The display unit spacing of block row, d represent the splicing gap spacing of the corresponding displaying block row.
In one embodiment of the invention, the most bond length of the multiple concatenation unit in above-mentioned steps (a) is
x；When described first display bright block size be h1 × h1 and it is described second show bright block size be h2 × h2, then meet relation
Formula (h1+h2) × 3≤x；Wherein h1, h2 be natural number more than 1 and can with it is equal can also be unequal.
In one embodiment of the invention, above-mentioned spliced display screen is LED display, and the multiple concatenation unit is
LED box or LED lamp panel, the display unit are LED point.
In addition, one kind that another embodiment of the present invention provides splices bright concealed wire modification method, including step：(i) according to spelling
The size for connecing multiple concatenation units in formula display screen determines complementary the first screen body display unit lighting mode and the second screen body
Display unit lighting mode, wherein the first screen body display unit lighting mode is only to make odd number displaying block row show along row side
To spaced multiple first display bright blocks, the second screen body display unit lighting mode is only to show even number displaying block row
Show along the spaced multiple second display bright blocks of line direction, and the first display bright block and the second display bright block exist
Heterogeneous Permutation on column direction；(ii) with the first screen body display unit lighting mode control light the spliced display screen with
First object image is obtained for shooting, and the spliced display is lighted with the second screen body display unit lighting mode control
Screen obtains the second target image for shooting；(iii) the first object image and second target image are carried out respectively
Image procossing shows the gray scale center of bright block to obtain each first display bright block and each described second；And (iv) meter
The correction coefficient of each edge display unit in the neighbouring splicing gap of adjacent concatenation unit is for spelling described in modifying factor
Seam gap and caused by the bright concealed wire of splicing.
In one embodiment of the invention, above-mentioned steps (iv) include sub-step：(iv1) for the first object figure
Each of the first display bright block or the second display bright block in each of picture and second target image be present
Displaying block row, it is bright using the side for being located at the splicing gap in the displaying block row or two per side first displays
Described in gray scale centre distance and corresponding display unit quantity between block or two the second display bright blocks are corresponded to
The display unit spacing of displaying block row；(iv2) the two of the both sides for being located at the splicing gap in the displaying block row respectively are utilized
Gray scale centre distance and corresponding display unit between the individual first display bright block or two the second display bright blocks
Quantity and the display unit spacing obtain the splicing gap spacing of the corresponding displaying block row；And described in (iv3) utilization
Multiple edges that display unit spacing and the splicing gap spacing obtain the neighbouring splicing gap in the displaying block row show
Show the correction coefficient of unit.
In one embodiment of the invention, above-mentioned steps (iv) also include sub-step：Will be by sub-step (iv1) extremely
(iv3) the correction coefficient profit of each edge display unit in the neighbouring splicing gap for the adjacent concatenation unit being calculated
Fitting a straight line is carried out with least square method, is modified with the correction coefficient to each edge display unit.
In one embodiment of the invention, the neighbouring splicing in the displaying block row in above-mentioned sub-step (iv3)
The correction coefficient coef of multiple edge display units in gapbright=1+ ((e+d)/d-1)/2, wherein e represent corresponding described aobvious
Show the display unit spacing of block row, d represents the splicing gap spacing of the corresponding displaying block row.
From the foregoing, it will be observed that the embodiment of the present invention is lighted using the LED point of the spliced display screen such as LED display of design
Mode, namely uniformly bright block point bright screen body, it is only necessary to which shoot two images can be to be accurately modified to splicing bright concealed wire；
Avoid existing method and shoot the problem of multiple images cause the calculating of LED dot center inaccurate.In addition, energy of the embodiment of the present invention
Enough bright concealed wires of splicing for quickly removing big resolution ratio screen body, have very high practical value；In addition, existing method passes through full frame point
Analysis carries out splicing bright concealed wire repairing, introduces the problem of screen body uniformity is deteriorated, and the embodiment of the present invention is only between concatenation unit
Stitching portion carry out bright concealed wire repairing, the problem will not be introduced..
By the detailed description below with reference to accompanying drawing, other side of the invention and feature become obvious.But it should know
Road, the accompanying drawing is only the purpose design explained, not as the restriction of the scope of the present invention, because it should refer to
Appended claims.It should also be noted that unless otherwise noted, it is not necessary to which scale accompanying drawing, they only try hard to concept
Ground illustrates structure and flow described herein.
Brief description of the drawings
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Fig. 1 is a kind of LED point dot interlace lighting mode schematic diagram of the prior art.
Fig. 2 is two kinds of complementary screen body LED point lighting mode schematic diagrames of the embodiment of the present invention.
Fig. 3 is amplification signal of the rectangle repeat unit under two kinds of complementary screen body LED point lighting modes in Fig. 2
Figure.
Fig. 4 is two that the embodiment of the present invention is shot to obtain under two kinds of screen body LED point lighting modes shown in Fig. 2
Complementary image.
Fig. 5 is utilizing independent positioning method to position LED display bright blocks and calculating LED using grey scale centre of gravity for the embodiment of the present invention
Show the schematic diagram at the gray scale center of bright block.
Fig. 6 is a kind of schematic diagram of calculating LED point spacing of the embodiment of the present invention.
Fig. 7 is that the schematic diagram of gap spacing is spliced in a kind of calculating of the embodiment of the present invention.
Fig. 8 is that a kind of of the embodiment of the present invention carries out straight line using least square method to the correction coefficient of edge LED point
The schematic diagram of fitting.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
Fig. 2 to Fig. 7 is referred to, one kind provided in an embodiment of the present invention is applied to spliced display screen such as LED display
The bright concealed wire modification method of splicing can be realized by following technical scheme.Specifically：
First, the screen body LED point for target display screen being calculated according to the size of the concatenation unit of target LED display is lighted
Mode, namely screen body display unit lighting mode.Because the size of concatenation unit is, it is known that the present embodiment uses two kinds of complementary screens
Body LED point lighting mode, such as respectively as shown in (a) and (b) in Fig. 2, wherein label 23 and 25 represents different screen bodies
Display bright block under LED point lighting mode.More specifically, in fig. 2, with such as two adjacent splicings of multiple concatenation units
Exemplified by unit, the two concatenation units are being included in multiple rectangles of repeated arrangement on ranks direction as an entirety (such as just
It is square) repeat unit 21, under the screen body LED point lighting mode in Fig. 2 (a), the upper left top of each rectangle repeat unit 21
Multiple same colors (such as green, naturally it is also possible to for other primary colours) LED point of Angle Position is lit and to form display bright block
23；Correspondingly, under the screen body LED point lighting mode in Fig. 2 (b), the bottom right corner position of each rectangle repeat unit 21
Multiple same colors (such as green) LED points be lit and form display bright block 25；In brief, in two kinds of complementary screen bodies
Under LED point lighting mode, display bright block 23,25 is located at two on the same diagonal in same rectangle repeat unit 21 respectively
Individual corner position and non-overlapping copies.
Fig. 3 is referred to, it shows rectangle repeat unit 21 in Fig. 2 in two kinds of complementary screen body LED point lighting modes
Under enlarged diagram.Specifically, as shown in figure 3, wherein " o " represents the same color LED point lighted, " x " represents non-lit up
Same color LED point, each rectangle repeat unit 21 include 6 × 6 with color LED point；In addition, such as Fig. 3 (a) institutes
Show, under the screen body LED point lighting mode shown in Fig. 2 (a), 3 × 3 of the upper left corner position of rectangle repeat unit 21 are same
Color LED point is lit and forms LED and show bright block 23, and other 27 non-lit up with color LED point；Such as Fig. 3 (b)
It is shown, under the screen body LED point lighting mode shown in Fig. 2 (b), 3 × 3 of the bottom right corner position of rectangle repeat unit 21
It is lit with color LED point and forms LED and show bright block 25, and other 27 are non-lit up with color LED point.
With reference to Fig. 2 and Fig. 3, two kinds of complementary screen body LED point lighting modes of the embodiment of the present invention can also do as follows
Statement：Screen body LED point lighting mode shown in Fig. 2 (a) shows phaeodiums to make to include on each odd number displaying block row by 3 × 3
Multiple 3 × 3 display bright blocks 23 at 24 intervals are without making comprising display bright block on even number displaying block row, the screen body shown in Fig. 2 (b)
LED point lighting mode is to make to include on each even number displaying block row to show that multiple 3 × 3 displays that phaeodiums 26 are spaced are bright by 3 × 3
Block 25 is without making on even number displaying block row comprising display bright block；And on adjacent odd number displaying block row and even number displaying block row
Display bright block 23 and the dislocation display (on the length direction that is to say splicing gap) in a column direction of display bright block 25.
Then, the LED lighted using image capture device such as CCD camera to the mode as shown in Fig. 2 (a) and (b) is shown
Screen is shot to obtain corresponding two images, respectively as shown in (a) and (b) in Fig. 4.From Fig. 4 it can be found that (a) and
(b) it is located at odd number displaying block row for the display bright block in display bright block complementary two images, namely Fig. 4 (a), in Fig. 4 (b)
Display bright block is located at even number displaying block row, and the display bright block on adjacent odd number displaying block row and even number displaying block row is in row side
Upwards in dislocation arrangement.
Then, each 3 × 3 display bright block is oriented in two complementary images of above-mentioned acquisition using independent positioning method
(23 or 25), such as the white box in Fig. 5；Grey scale centre of gravity method is recycled to calculate the ash of each 3 × 3 display bright block (23 or 25)
Degree center.Herein it should be noted that due to the method phase for carrying out point location to two complementary images and grey scale centre of gravity calculates
Together, therefore Fig. 5 only shows to carry out image shown in Fig. 4 (a) in the schematic diagram of point location and grey scale centre of gravity calculating；Furthermore point location
Method and grey scale centre of gravity method are the image processing techniques that LED display alignment technique field is commonly used, therefore be will not be repeated here.
Afterwards, the lamp point spacing d of display unit spacing such as the present embodiment is calculated.Concretely：Because the present embodiment is
The point bright screen body by the way of uniform bright block, the position in the splicing gap between two neighboring concatenation unit are present as in figure (6)
Two kinds of situations that two dotted lines represent respectively, namely splicing gap there may be two row show between bright block (23 or 25) or
Certain row is shown in bright block (23 or 25), thus correspondingly enters portable lighter point spacing d calculating by the way of shown in Fig. 6.More specifically
Ground, for the every of 3 × 3 display bright blocks (23 or 25) be present in the foregoing each image shot in two obtained complementary images
One displaying block row, the uneven lamp point brought is arranged apart from calculation error by LED point in order to reduce, takes splicing gap respectively
It is that two adjacent row show bright block that each side the display bright block (23 or 25) on two row, which is used to calculate in lamp point spacing d, Fig. 6,
(23 or 25)；By taking 3 × 3 display bright blocks (23 or 25) as an example, it is assumed that two adjacent display bright blocks (23 or 25) on the row of left side two
The distance between (namely the distance between gray scale center) be d1, it is corresponding with same color LED point 6；On the row of right side two
Two adjacent display bright blocks the distance between (23 or 25) are d2, it is corresponding with same color LED point 6, then LED point distance
D=(d1+d2)/12.
Next, calculate splicing gap spacing e.Concretely：Shot for foregoing in two obtained complementary images
Each displaying block row of 3 × 3 display bright blocks (23 or 25) in each image be present, choose dotted line as shown in Figure 7 (in Fig. 7
Two dotted lines represent splicing gap two kinds of possible positions) each side one 3 × 3 display bright block (23 or 25) based on
Splicing gap spacing e is calculated, it is corresponding with same color LED point 12, it is assumed that 3 × 3 display bright blocks of two selections shown in Fig. 7
The distance between (23 or 25) are d3, then gap spacing e=d3-d × 12 are spliced.If e ＞ 0, then it is assumed that be between concatenation unit
Splice concealed wire, if e ＜ 0, then it is assumed that be splicing bright line between concatenation unit, if e=0, then it is assumed that be not present between concatenation unit
Splice bright concealed wire.
Subsequently, correction coefficient coef is calculated.Concretely：It is every in two complementary images obtained for foregoing shooting
Each displaying block row of 3 × 3 display bright blocks (23 or 25) in one image be present, according to splicing gap spacing e, ask for splicing
The correction coefficient coef of each 3 edge lights point in stitching portion (splicing gap) both sides between unitbright=1+ ((e+d)/d-1)/2.
Herein it is understood that due to it is foregoing shoot obtained two images be odd number in complementary image, namely first image (or
Even number) odd number (or even number) displaying block row in corresponding second image of one 3 × 3 display bright block 23 (or 25) in displaying block row
In one 3 × 3 display phaeodium and second image in one 3 × 3 display bright block 25 in even number (or odd number) displaying block row
One 3 × 3 display phaeodium in (or 23) corresponding first image in even number (or odd number) displaying block row；Count according to the method described above
After calculating correction coefficient, contiguous concatenation unit is located at the same displaying block row comprising 3 × 3 display bright blocks (23 or 25) and is located at
Splice gap both sides each 3 correspond to a correction coefficient with color LED point.
Preferably, the embodiment of the present invention can also carry out fitting a straight line to the correction coefficient at splicing gap.Specifically, due to
The corresponding school of every three edges LED point at the reasons such as ambient light interference, spot placement accuracy and above-mentioned processing splicing gap
Positive coefficient, therefore a certain degree of deviation be present in the correction coefficient that aforementioned processing obtains, it is therefore preferred to for each splicing
Unit, the correction coefficient that aforementioned processing is obtained are in line by least square fitting, the correction as current concatenation unit
Coefficient.Least square method is a kind of mathematical optimization techniques, and it finds the optimal function of data by minimizing the quadratic sum of error
Matching；Can easily try to achieve unknown data using least square method, and cause the data that these are tried to achieve and real data it
Between error quadratic sum for minimum.As Fig. 8 shows, its cathetus represents the result after being fitted to various discrete point, afterwards by this
Linear equation corresponding to straight line can be calculated in all edge LED points on the splicing gap length direction of concatenation unit
Each edge LED point correction coefficient, and linear equation is, for example, (such as along splicing by the position of edge LED point
Serial number on gap length direction) independent variable is used as, the correction coefficient of edge LED point is as dependent variable.
In addition, under two kinds of the embodiment of the present invention complementary screen body LED point lighting modes 3 × 3 display bright blocks (23 or
25) size can require to adjust according to available accuracy, such as the display under two kinds of complementary screen body LED point lighting modes is bright
The size of block 23,25 is 4 × 4, then the size of repeat unit 21 is 8 × 8, correspondingly shows that the size of phaeodium 24,26 is also equal
For 4 × 4；It is another or a kind of size of the display bright block 23 (or 25) under screen body LED point lighting mode is 3 × 3
The size for shielding the display bright block 25 (or 23) under body LED point lighting mode is 4 × 4, then the size of repeat unit 21 is 7 × 7,
The size for correspondingly showing phaeodium 24 is 3 × 4 (or 4 × 3), the size of display phaeodium 26 is 4 × 3 (or 3 × 4).
Furthermore the size of the display bright block 23,25 of the embodiment of the present invention can adjust according to the size of concatenation unit, if
D is chosen according to preceding solution1、d2And d3, it is assumed that the bond length in concatenation unit is x, and the size of display bright block 23 is h1
×h1Size with display bright block 25 is h2×h2, then have (h1+h2) × 3≤x, i.e., three weights are comprised at least on a concatenation unit
Multiple unit 21, three display bright blocks 23 are comprised at least in the displaying block row comprising display bright block on a concatenation unit in other words
(or 25) and three display phaeodiums 24 (or 26)；Wherein h1, h2 be natural number more than 1 and can with it is equal can not also phase
Deng.
In addition, the calculating for lamp point spacing d, can also there is following alternative solution：1) splicing can be with left and right sides of gap
Different display bright block columns is selected, while the left and right sides does not require certain symmetrical selection；2) certain side for splicing gap is utilized
Display bright block rather than the display bright blocks of both sides calculate lamp point spacing d.Between the display bright block of both the above alternative solution selection
Every less, closer to splicing gap, calculate the error of introducing with regard to smaller.
And for splicing gap spacing e calculating, showing that the selection of bright block columns is not fixed requires, it is only necessary to will splice
Gap is included；But the display bright block columns of selection is fewer, and the error of introducing is with regard to smaller.
In addition, it is noted that previous embodiment when spliced display screen is LED display, its concatenation unit
E.g. LED lamp panel or LED box；Of course, it should be understood that the spliced display screen of the embodiment of the present invention is not limited to LED
Display screen or other can correct the spliced of the bright concealed wire of splicing by changing the luminance parameter of edge display unit
LED display.
Finally, it will also be appreciated that previous embodiment is to light single color LED point in LED display to repair
Just splicing bright concealed wire, correspondingly, foregoing display unit is single color LED point, such as red LED lamp point, green LED lamp point
Or blue LED lamp point；But the present invention is not limited thereto, with same gray level (such as GTG 255) while LED can also be lighted shows
All LED modules with different colors lamp points in each LED pixel point in display screen simultaneously make each LED pixel point that same color be presented to enter
Row splices bright concealed wire amendment, such as by taking RGB full-color LED display screens as an example, can be lighted with GTG 255 in each LED pixel point
RGB LEDs point make its present white, correspondingly, foregoing display unit is single led pixel.
In summary, the above embodiment of the present invention utilizes the LED point of the spliced display screen such as LED display of design
Lighting mode, namely uniformly bright block point bright screen body, it is only necessary to which shooting two images can be with accurately to splicing bright concealed wire progress
Amendment；Avoid existing method and shoot the problem of multiple images cause the calculating of LED dot center inaccurate.In addition, the present invention is real
The bright concealed wire of splicing of big resolution ratio screen body can quickly be removed by applying example, have very high practical value；In addition, existing method passes through
Full frame analysis carries out splicing bright concealed wire repairing, introduces the problem of screen body uniformity is deteriorated, and the embodiment of the present invention is only single to splicing
Stitching portion between member carries out bright concealed wire repairing, will not introduce the problem.
So far, the principle and embodiment of splicing bright concealed wire modification method of the specific case used herein to the present invention
It is set forth, the explanation of above example is only intended to help the method and its core concept for understanding the present invention；Meanwhile for
Those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Place, in summary, this specification content should not be construed as limiting the invention, and protection scope of the present invention should be with appended power
Profit requires to be defined.
Claims (10)
1. one kind splices bright concealed wire modification method, it is characterised in that including step：
(a) size of multiple concatenation units in spliced display screen determine on the spliced display screen along line direction and
The size of multiple rectangle repeat units of column direction repeated arrangement, rectangle repeat unit described in each of which include multiple displays
Unit；
(b) control lights multiple display units of respective first corner position of the multiple rectangle repeat unit and forms first
Display bright block obtains first object image for shooting, and controls and light respective second drift angle of the multiple rectangle repeat unit
Multiple display units of position and formed the second display bright block for shooting obtain the second target image, wherein first drift angle
Position and second corner position are located on the same diagonal of the rectangle repeat unit and corresponding described first is aobvious
Show bright block and the second display bright block non-overlapping copies；
(c) image procossing is carried out respectively to the first object image and second target image to obtain each described first
Show the gray scale center of bright block and each second display bright block；And
(d) correction coefficient of each edge display unit in the neighbouring splicing gap of adjacent concatenation unit is calculated for amendment
Because the splicing gap and caused by the bright concealed wire of splicing, and specifically include following sub-step：
(d1) for each displaying block row and described second of the first display bright block in the first object image be present
Each displaying block row of the second display bright block in target image be present, using being located at the splicing in the displaying block row
The ash between two first display bright blocks or two the second display bright blocks in the one or both sides in gap per side
Degree centre distance and corresponding display unit quantity obtain the display unit spacing of the corresponding displaying block row；
(d2) using in the displaying block row respectively positioned at the both sides in the splicing gap two first display bright blocks or
Gray scale centre distance and corresponding display unit quantity and the display unit between two the second display bright blocks
Spacing obtains the splicing gap spacing of the corresponding displaying block row；And
(d3) the neighbouring splicing in the displaying block row is obtained using the display unit spacing and the splicing gap spacing
The correction coefficient of multiple edge display units in gap.
2. splice bright concealed wire modification method as claimed in claim 1, it is characterised in that step (d) also includes sub-step：Will be logical
The each edge display for crossing the neighbouring splicing gap for the adjacent concatenation unit that sub-step (d1) to (d3) is calculated is single
The correction coefficient of member carries out fitting a straight line using least square method, to be carried out to the correction coefficient of each edge display unit
Amendment.
3. splice bright concealed wire modification method as claimed in claim 1, it is characterised in that in sub-step (d1), the display
In block row in the one or both sides in the splicing gap per two of side the first display bright blocks or two described the
Two display bright blocks are two adjacent display bright blocks.
4. splice bright concealed wire modification method as claimed in claim 1, it is characterised in that in sub-step (d3), the display
The correction coefficient coef of multiple edge display units in the neighbouring splicing gap in block rowbright=1+ ((e+d)/d-1)/2,
Wherein e represents the display unit spacing of the corresponding displaying block row, and d represents the splicing gap spacing of the corresponding displaying block row.
5. splice bright concealed wire modification method as claimed in claim 1, it is characterised in that in step (a), the multiple splicing
The most bond length of unit is x；When the size of the described first display bright block is h1 × h1 and the size of the second display bright block
For h2 × h2, then meet relational expression (h1+h2) × 3≤x；Wherein h1, h2 be natural number more than 1 and can with it is equal can also
It is unequal.
6. splice bright concealed wire modification method as claimed in claim 1, it is characterised in that the spliced display screen shows for LED
Display screen, the multiple concatenation unit are LED box or LED lamp panel, and the display unit is LED point.
7. one kind splices bright concealed wire modification method, it is characterised in that including step：
(i) size of multiple concatenation units in spliced display screen determines the first complementary screen body display unit side of lighting
Formula and the second screen body display unit lighting mode, wherein the first screen body display unit lighting mode is only to make odd number displaying block
Along the spaced multiple first display bright blocks of line direction, the second screen body display unit lighting mode is only to make idol for row display
Number displaying block rows shows along the spaced multiple second displays bright blocks of line direction, and described first shows bright block and described the
Two show bright blocks Heterogeneous Permutation in a column direction；
(ii) the spliced display screen is lighted so that shooting obtains the with the first screen body display unit lighting mode control
One target image, and the spliced display screen is lighted for shooting with the second screen body display unit lighting mode control
To the second target image；
(iii) image procossing is carried out respectively to the first object image and second target image to obtain each described
The gray scale center of one display bright block and each second display bright block；And
(iv) correction coefficient of each edge display unit in the neighbouring splicing gap of adjacent concatenation unit is calculated for repairing
Just because the splicing gap and caused by the bright concealed wire of splicing.
8. splice bright concealed wire modification method as claimed in claim 7, it is characterised in that step (iv) includes sub-step：
(iv1) for each displaying block row and described second of the first display bright block in the first object image be present
Each displaying block row of the second display bright block in target image be present, using being located at the splicing in the displaying block row
The ash between two first display bright blocks or two the second display bright blocks in the one or both sides in gap per side
Degree centre distance and corresponding display unit quantity obtain the display unit spacing of the corresponding displaying block row；
(iv2) using in the displaying block row respectively positioned at the both sides in the splicing gap two first display bright blocks or
Gray scale centre distance and corresponding display unit quantity and the display unit between two the second display bright blocks
Spacing obtains the splicing gap spacing of the corresponding displaying block row；And
(iv3) the neighbouring splicing in the displaying block row is obtained using the display unit spacing and the splicing gap spacing
The correction coefficient of multiple edge display units in gap.
9. splice bright concealed wire modification method as claimed in claim 8, it is characterised in that step (iv) also includes sub-step：Will
Each edge in the neighbouring splicing gap for the adjacent concatenation unit being calculated by sub-step (iv1) to (iv3) shows
Show that the correction coefficient of unit carries out fitting a straight line using least square method, with the correction coefficient to each edge display unit
It is modified.
10. splice bright concealed wire modification method as claimed in claim 8, it is characterised in that described aobvious in sub-step (iv3)
Show the correction coefficient coef of multiple edge display units in the neighbouring splicing gap in block rowbright=1+ ((e+d)/d-1)/
2, wherein e represent the display unit spacing of the corresponding displaying block row, and d is represented between the splicing gap of the corresponding displaying block row
Away from.
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| CN105321469B (en) * | 2015-11-12 | 2018-01-12 | 西安诺瓦电子科技有限公司 | Splice bright concealed wire modification method |
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