CN104915922A - Splicing bright-dark line correction method - Google Patents
Splicing bright-dark line correction method Download PDFInfo
- Publication number
- CN104915922A CN104915922A CN201510357954.2A CN201510357954A CN104915922A CN 104915922 A CN104915922 A CN 104915922A CN 201510357954 A CN201510357954 A CN 201510357954A CN 104915922 A CN104915922 A CN 104915922A
- Authority
- CN
- China
- Prior art keywords
- display
- bright
- display unit
- splicing
- displaying block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention relates to a splicing bright-dark line correction method which is applicable to splicing type display screens such as an LED screen. The splicing bright-dark line correction method comprises the steps of determining two complementary screen body display unit lightening modes according to the size of splicing units, then controlling and lightening the display screen according to the determined screen body display unit lightening mode so as to be provided for shooting to acquire two complementary target images; carrying out image processing on the acquired target images respectively so as to acquire the gray scale center of each display bright block, and then calculating the display unit spacing and the splicing gap spacing; and finally, calculating a correction coefficient of each marginal display unit, which is adjacent to a splicing gap, of the splicing units by using the display unit spacing and the splicing gap spacing so as to be used for correcting a splicing bright-dark line caused by the splicing gap. According to the invention, people can carry out correction on the bright-dark line accurately by only shooting two images through designing the screen body display unit lightening modes; and furthermore, a problem that the screen body uniformity gets poor because splicing bright-dark line correction in the prior art is carried out through full-screen analysis can also be avoided.
Description
Technical field
The present invention relates to display control technology field, particularly one splices bright concealed wire modification method.
Background technology
LED display is normally spliced by multiple concatenation unit, owing to there is the restriction such as machining accuracy and splicing accuracy in splicing, stitching portion between concatenation unit and concatenation unit is uneven, causes edge, stitching portion inconsistent with color LED dot spacing.When showing image, there will be stowing when this spacing is greater than lamp point normal pitch, there will be bright seam when spacing is less than lamp point normal pitch, this bright seam or stowing are called that LED display splices bright concealed wire, are called for short the bright concealed wire of splicing.
Bright concealed wire such as the splicing caused by machining etc., is difficult to be solved by improving machining accuracy.Classic method splices the position of bright concealed wire by eye-observation, manually correction factor/correction coefficient is given to the LED point splicing bright concealed wire both sides, by repeatedly observing and revising, until reach ideal situation.This method not only efficiency is low, high to staff requirement, simultaneously also large especially to human eye harm.
In the bright concealed wire modification method of existing one splicing: the size of concatenation unit is unknown, multiple dot interlaces of the full frame shooting of LED display is lighted to the image of (be commonly called as dot interlace and play screen); Suppose selection 3 × 3 dot interlace, then in requisition for shooting nine images; For G primary colors (green) LED point, as shown in Figure 1, wherein " o " represents the LED point lighted to the LED point lighting mode of corresponding nine images, and " x " represents the lamp point do not lighted.First determining each LED lamp point region by point location after obtaining nine images, then locate each LED lamp dot center coordinate, is finally one by these nine image processing and tracking unit; After merging into an image, calculate each LED lamp point area, calculate correction coefficient by LED point area discrepancy.
But, for aforementioned prior art, (a) its need to take multiple images and then merged into one, owing to there is DE Camera Shake in bat figure process, LED point position has skew, there is error, the correction coefficient out of true calculated in the LED dot spacing that the image after therefore merging obtains; B () is due to the unknown of concatenation unit size, as long as therefore count on two LED lamp point area discrepancies to be greater than certain threshold value and just to think to there is gap, and carry out revising/correcting, therefore the position of not splicing gap also can be repaired, cause the screen body after correction of a final proof uneven; C () LED display screen body is larger, require that video camera distance screen body is far away, now need to take larger dot interlace (as K*K) to carry out image taking, therefore need the image more (K*K) taken; In addition, in shooting image process, there is DE Camera Shake, picture position has skew, and the error of introducing is just larger.
Summary of the invention
Therefore, for overcoming defect and the deficiency of prior art existence, the invention provides the bright concealed wire modification method of a kind of splicing.
Particularly, the one that the embodiment of the present invention provides splices bright concealed wire modification method, comprise step: (a) determines described spliced display screen is gone up along the line of the column direction the size of multiple rectangle repetitives of repeated arrangement according to the size of the multiple concatenation units in spliced display screen, wherein described in each, rectangle repetitive comprises multiple display unit; B () controls to light multiple display unit of described multiple rectangle repetitive the first corner position separately and forms bright piece of the first display for shooting and obtain first object image, and control to light multiple display unit of described multiple rectangle repetitive the second corner position separately and form bright piece of the second display for shooting and obtain the second target image, on the same diagonal line that wherein said first corner position and described corner position are positioned at described rectangle repetitive and corresponding described first bright piece of display and described second display bright piece of non-overlapping copies; C () carries out image procossing to obtain the gray scale center of the first bright piece of display and bright piece of the second display described in each described in each respectively to described first object image and described second target image; And the bright concealed wire of splicing that (d) correction coefficient of calculating each edge display unit in the contiguous splicing gap of adjacent concatenation unit causes for splicing gap described in modifying factor.Wherein, step (d) specifically comprises following sub-step: (d1) is capable for each displaying block that there is bright piece of described first display bright piece or described second display in each of described first object image and described second target image, and the gray scale centre distance in utilizing described displaying block capable between two described bright piece of first displays of the side in described splicing gap or every side or two described bright piece of second displays and corresponding number of display elements measure the capable display unit spacing of the described displaying block of correspondence; (d2) lay respectively at gray scale centre distance between described bright piece of first display of two of the both sides in described splicing gap or two described bright piece of second displays and corresponding display unit quantity and described display unit spacing in utilizing described displaying block capable and obtain the capable splicing gap spacing of corresponding described displaying block; And (d3) utilize described display unit spacing and described splicing gap spacing obtain described displaying block capable in the correction coefficient of multiple edges display unit in contiguous described splicing gap.
In one embodiment of the invention, above-mentioned steps (d) also comprises sub-step: utilize least square method to carry out fitting a straight line, to revise the described correction coefficient of each edge display unit the correction coefficient of each edge display unit in the described splicing gap of vicinity of the adjacent concatenation unit calculated by sub-step (d1) to (d3).
In one embodiment of the invention, being positioned at the side in described splicing gap or two described bright piece of first displays of every side or two described bright piece of second displays during the described displaying block in above-mentioned sub-step (d1) is capable is bright piece adjacent of two displays.
In one embodiment of the invention, the correction coefficient coef of multiple edges display unit in contiguous described splicing gap during the described displaying block in above-mentioned sub-step (d3) is capable
bright=1+ ((e+d)/d-1)/2, wherein e represents the capable display unit spacing of corresponding described displaying block, and d represents the capable splicing gap spacing of corresponding described displaying block.
In one embodiment of the invention, the most bond length of the described multiple concatenation unit in above-mentioned steps (a) is x; When the described first display size of bright piece is h1 × h1 and the size of described bright piece of second display is h2 × h2, then meet relational expression (h1+h2) × 3≤x; Wherein h1, h2 be greater than 1 natural number and can equal also can be unequal.
In one embodiment of the invention, above-mentioned spliced display screen is LED display, and described multiple concatenation unit is LED box or LED lamp panel, and described display unit is LED point.
In addition, the one that another embodiment of the present invention provides splices bright concealed wire modification method, comprise step: (i) determines the first complementary screen body display unit lighting mode and the second screen body display unit lighting mode according to the size of the multiple concatenation units in spliced display screen, wherein said first screen body display unit lighting mode is for only making the capable display of odd number displaying block spaced multiple bright piece of first display in the row direction, described second screen body display unit lighting mode is for only making the capable display of even number displaying block spaced multiple bright piece of second display in the row direction, and described first bright piece of display and described bright piece of second display Heterogeneous Permutation in a column direction, (ii) control to light described spliced display screen with described first screen body display unit lighting mode and obtain first object image for shooting, and control to light described spliced display screen with described second screen body display unit lighting mode and obtain the second target image for shooting, (iii) image procossing is carried out respectively to obtain the gray scale center of the first bright piece of display and bright piece of the second display described in each described in each to described first object image and described second target image, and the bright concealed wire of splicing that (iv) correction coefficient of calculating each edge display unit in the contiguous splicing gap of adjacent concatenation unit causes for splicing gap described in modifying factor.
In one embodiment of the invention, above-mentioned steps (iv) comprises sub-step: (iv1) is capable for each displaying block that there is bright piece of described first display bright piece or described second display in each of described first object image and described second target image, and the gray scale centre distance in utilizing described displaying block capable between two described bright piece of first displays of the side in described splicing gap or every side or two described bright piece of second displays and corresponding number of display elements measure the capable display unit spacing of the described displaying block of correspondence; (iv2) lay respectively at gray scale centre distance between described bright piece of first display of two of the both sides in described splicing gap or two described bright piece of second displays and corresponding display unit quantity and described display unit spacing in utilizing described displaying block capable and obtain the capable splicing gap spacing of corresponding described displaying block; And (iv3) utilize described display unit spacing and described splicing gap spacing obtain described displaying block capable in the correction coefficient of multiple edges display unit in contiguous described splicing gap.
In one embodiment of the invention, above-mentioned steps (iv) also comprises sub-step: utilize least square method to carry out fitting a straight line, to revise the described correction coefficient of each edge display unit the correction coefficient of each edge display unit in the described splicing gap of vicinity of the adjacent concatenation unit calculated by sub-step (iv1) to (iv3).
In one embodiment of the invention, the correction coefficient coef of multiple edges display unit in contiguous described splicing gap during the described displaying block in above-mentioned sub-step (iv3) is capable
bright=1+ ((e+d)/d-1)/2, wherein e represents the capable display unit spacing of corresponding described displaying block, and d represents the capable splicing gap spacing of corresponding described displaying block.
As from the foregoing, the embodiment of the present invention utilizes the LED point lighting mode of spliced display screen such as LED display of design, also i.e. even bright piece of some bright screen body, only needs shooting two images just can accurately revise the bright concealed wire of splicing; Avoid existing method to take multiple images and make LED dot center calculate coarse problem.In addition, the embodiment of the present invention can remove the bright concealed wire of splicing of large resolution screen body fast, has very high practical value; In addition, existing method is undertaken splicing bright concealed wire by full frame analysis and is repaired, and introduce the problem that screen body homogeneity is deteriorated, and the embodiment of the present invention only carries out bright concealed wire repairing to the stitching portion between concatenation unit, can not introduce this problem.。
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific 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 the complementary screen body LED point lighting mode schematic diagram of two kinds of the embodiment of the present invention.
The enlarged diagram that Fig. 3 is rectangle repetitive in Fig. 2 under two kinds of complementary screen body LED point lighting modes.
Fig. 4 carries out taking two complementary image obtained for the embodiment of the present invention under two kinds of screen body LED point lighting modes shown in Fig. 2.
Fig. 5 be the embodiment of the present invention utilize independent positioning method to locate LED to show bright piece and utilize grey scale centre of gravity to calculate LED to show the schematic diagram at the gray scale center of bright piece.
Fig. 6 is a kind of schematic diagram calculating LED dot spacing of the embodiment of the present invention.
Fig. 7 is a kind of schematic diagram calculating splicing gap spacing of the embodiment of the present invention.
Fig. 8 is a kind of schematic diagram utilizing the correction coefficient of least square method edge LED point to carry out fitting a straight line of the embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Refer to Fig. 2 to Fig. 7, a kind of splicing bright concealed wire modification method being applicable to spliced display screen such as LED display that the embodiment of the present invention provides can be realized by following technical scheme.Particularly:
First, calculate the screen body LED point lighting mode of target display screen according to the size of the concatenation unit of target LED display, also namely shield body display unit lighting mode.Because the size of concatenation unit is known, the present embodiment adopts two kinds of complementary screen body LED point lighting modes, such as respectively as shown in (a) and (b) in Fig. 2, wherein label 23 and 25 represents bright piece of display under different screen body LED point lighting modes.More specifically, in fig. 2, for the concatenation unit that multiple concatenation unit such as two is adjacent, these two concatenation units are integrally included in multiple rectangles (such as square) repetitive 21 of repeated arrangement on ranks direction, under screen body LED point lighting mode in Fig. 2 (a), multiple same color (such as green, can certainly to be other primary colours) the LED point of the upper left corner position of each rectangle repetitive 21 is lit and forms display bright piece 23; Correspondingly, under the screen body LED point lighting mode in Fig. 2 (b), multiple same color (such as green) the LED point of the bottom right corner position of each rectangle repetitive 21 is lit and forms display bright piece 25; In brief, under two kinds of complementary screen body LED point lighting modes, show two corner positions on bright piece 23, the 25 same diagonal line laying respectively in same rectangle repetitive 21 and non-overlapping copies.
Refer to Fig. 3, it illustrates rectangle repetitive 21 in Fig. 2 enlarged diagram under two kinds of complementary screen body LED point lighting modes.Particularly, as shown in Figure 3, wherein " o " represents the same color LED point lighted, and " x " represents the same color LED point do not lighted, and each rectangle repetitive 21 comprises 6 × 6 with color LED point; In addition, as shown in Fig. 3 (a), under the screen body LED point lighting mode shown in Fig. 2 (a), 3 × 3 of the upper left corner position of rectangle repetitive 21 are lit with color LED point and form LED and show bright piece 23, and other 27 are not lit with color LED point; As shown in Fig. 3 (b), under the screen body LED point lighting mode shown in Fig. 2 (b), 3 × 3 of the bottom right corner position of rectangle repetitive 21 are lit with color LED point and form LED and show bright piece 25, and other 27 are not lit with color LED point.
Composition graphs 2 and Fig. 3, the complementary screen body LED point lighting mode of two kinds of the embodiment of the present invention can also do following statement: the screen body LED point lighting mode shown in Fig. 2 (a) for make each odd number displaying block capable on comprise not made by multiple 3 × 3 displays bright piece 23 at 3 × 3 display phaeodium 24 intervals even number displaying block capable on comprise bright piece of display, the screen body LED point lighting mode shown in Fig. 2 (b) for make each even number displaying block capable on comprise not made by multiple 3 × 3 displays bright piece 25 at 3 × 3 display phaeodium 26 intervals even number displaying block capable on comprise bright piece of display; And adjacent odd number displaying block is capable and even number displaying block capable on display bright piece 23 and display (that is to say on the length direction in splicing gap) dislocation display in a column direction for bright piece 25.
Then, use image capture device such as CCD camera to take the LED display lighted by mode shown in Fig. 2 (a) and (b) and obtain two corresponding images, respectively as shown in (a) and (b) in Fig. 4.Can find from Fig. 4, a () and (b) show bright block of complementary two images, also it is capable that bright piece of display namely in Fig. 4 (a) is positioned at odd number displaying block, it is capable that bright piece of display in Fig. 4 (b) is positioned at even number displaying block, and adjacent odd number displaying block is capable and even number displaying block capable on bright piece of display in a column direction in dislocation arrangement.
Then, independent positioning method is utilized in two complementary image of above-mentioned acquisition, to orient each 3 × 3 display bright piece (23 or 25), as the white box in Fig. 5; Recycling grey scale centre of gravity method calculates the gray scale center of each 3 × 3 display bright piece (23 or 25).It should be noted that, identical with the method that grey scale centre of gravity calculates owing to carrying out point location to two complementary images, therefore Fig. 5 only illustrates and carries out to image Fig. 4 (a) Suo Shi the schematic diagram that point location and grey scale centre of gravity calculate herein; Moreover independent positioning method and grey scale centre of gravity method are the image processing techniques that LED display alignment technique field is commonly used, therefore do not repeat them here.
Afterwards, the lamp dot spacing d of display unit spacing such as the present embodiment is calculated.Specifically can be: because the present embodiment adopts the mode point bright screen body of evenly bright piece, there are two kinds of situations as two dotted lines in figure (6) represent respectively in the position in the splicing gap between adjacent two concatenation units, also namely splice gap may there are two row and to show between bright piece (23 or 25) or on certain row bright piece of display (23 or 25), thus correspondingly to adopt the mode shown in Fig. 6 to carry out the calculating of lamp dot spacing d.More specifically, capable for each displaying block that there are 3 × 3 displays bright piece (23 or 25) in the image of each in two complementary image that aforementioned shooting obtains, in order to reduce to arrange the uneven lamp point brought apart from the error of calculation by LED point, getting the displays bright piece (23 or 25) of splicing gap each side on two row respectively for calculating lamp dot spacing d, be that adjacent two row show bright piece (23 or 25) in Fig. 6; For 3 × 3 display bright piece (23 or 25), suppose that the distance (distance also namely between gray scale center) between bright piece of two the adjacent displays (23 or 25) on the row of left side two is d
1, it is to there being same color LED point 6; Distance between bright piece of two adjacent displays (23 or 25) on the row of right side two is d
2, it is to there being same color LED point 6, then LED point distance d=(d1+d2)/12.
Next, splicing gap spacing e is calculated.Specifically can be: capable for each displaying block that there are 3 × 3 displays bright piece (23 or 25) in the image of each in two complementary image that aforementioned shooting obtains, choose dotted line (two kinds of possible positions in two represented by dotted arrows splicing gaps in Fig. 7) as shown in Figure 7 and each side show bright piece (23 or 25) for one 3 × 3 for calculating splicing gap spacing e, it is to there being same color LED point 12, supposes that 3 × 3 distances shown between bright piece (23 or 25) that shown in Fig. 7, two are chosen are d
3, then spacing e=d3-d × 12, gap are spliced.If e > 0, then think between concatenation unit to be splicing concealed wire, if e < 0, then think between concatenation unit to be splicing bright line, if e=0, then think there is not the bright concealed wire of splicing between concatenation unit.
Subsequently, correction coefficient coef is calculated.Specifically can be: capable for each displaying block that there are 3 × 3 displays bright piece (23 or 25) in the image of each in two complementary image that aforementioned shooting obtains, according to splicing gap spacing e, ask for the correction coefficient coef of each 3 the edge light points in stitching portion between concatenation unit (splicing gap) both sides
bright=1+ ((e+d)/d-1)/2.Be understandable that herein, two images obtained due to aforementioned shooting are complementary image, also namely in first image odd number (or even number) displaying block capable in corresponding second image of one 3 × 3 display bright piece 23 (or 25) in odd number (or even number) displaying block capable in one 3 × 3 display phaeodium and in second image even number (or odd number) displaying block capable in corresponding first image of one 3 × 3 display bright piece 25 (or 23) in even number (or odd number) displaying block capable in one 3 × 3 display phaeodium; Calculate according to the method described above after correction coefficient, contiguous concatenation unit be positioned at the same displaying block comprising 3 × 3 displays bright piece (23 or 25) capable and be positioned at splicing both sides, gap each 3 with the corresponding correction coefficient of color LED point.
Preferably, the embodiment of the present invention also can carry out fitting a straight line to the correction coefficient at splicing gap place.Particularly, due to the corresponding correction coefficient of every three the edge LED points of the reason such as ambient light interference, spot placement accuracy and above-mentioned process splicing gap place, there is deviation to a certain degree in the correction coefficient that therefore aforementioned processing obtains, therefore preferably for each concatenation unit, correction coefficient aforementioned processing obtained is in line by least square fitting, as the correction coefficient of current concatenation unit.Least square method is a kind of mathematical optimization techniques, and it finds the optimal function coupling of data by the quadratic sum of minimum error; Utilize least square method can try to achieve unknown data easily, and between the data that these are tried to achieve and real data, the quadratic sum of error is minimum.As Fig. 8 shows, its cathetus represents the result after to the matching of various discrete point, the correction coefficient of each the edge LED point in all edges LED point on the splicing gap length direction of concatenation unit can be calculated afterwards by the straight-line equation corresponding to this straight line, and straight-line equation is such as that as independent variable, the correction coefficient of edge LED point is as dependent variable using the position of edge LED point (such as along the serial number on the length direction of splicing gap).
In addition, the sizes of 3 × 3 displays bright piece (23 or 25) under the screen body LED point lighting mode that two kinds of the embodiment of the present invention are complementary can require adjustment according to realistic accuracy, such as, display under two kinds complementary screen body LED point lighting modes bright piece 23,25 size be 4 × 4, then the size of repetitive 21 is 8 × 8, and the size correspondingly showing phaeodium 24,26 is also 4 × 4; Or, a kind of size of display bright piece 23 (or 25) of shielding under body LED point lighting mode is 3 × 3, the size of the display bright piece 25 (or 23) under another kind of screen body LED point lighting mode is 4 × 4, then the size of repetitive 21 is 7 × 7, and the size correspondingly showing phaeodium 24 is 3 × 4 (or 4 × 3), the size of display phaeodium 26 is 4 × 3 (or 3 × 4).
Moreover, the display of the embodiment of the present invention bright piece 23,25 size can adjust according to the size of concatenation unit, if choose d according to preceding solution
1, d
2and d
3, suppose that the bond length in concatenation unit is x, the size showing bright piece 23 is h
1× h
1be h with the display size of bright piece 25
2× h
2, then (h is had
1+ h
2) × 3≤x, namely a concatenation unit at least comprises three repetitives 21, during the displaying block comprising bright piece of display in other words on a concatenation unit is capable, at least comprise three displays bright piece 23 (or 25) and three displays phaeodium 24 (or 26); Wherein h1, h2 be greater than 1 natural number and can equal also can be unequal.
In addition, for the calculating of lamp dot spacing d, can also have following replacement scheme: 1) splice the left and right sides, gap and can select different displays bright piece of columns, the left and right sides does not require certain symmetrical selection simultaneously; 2) utilize splicing gap certain side bright piece of display but not bright piece of the display of both sides calculates lamp dot spacing d.The bright block gap of display that above two kinds of replacement schemes are selected less, the closer to splicing gap, the error calculating introducing is less.
And for splicing the calculating of gap spacing e, requirement is not fixed in the selection showing bright piece of columns, only need splicing gap to be included; But the display bright piece of columns selected is fewer, and the error of introducing is less.
In addition, it is worth mentioning that, previous embodiment is when spliced display screen is LED display, and its concatenation unit is such as LED lamp panel or LED box; It is appreciated of course that the spliced display screen of the embodiment of the present invention is not limited to LED display, also can be that the luminance parameter that other pass through to change edge display unit can revise the spliced LED display of splicing bright concealed wire.
Finally, also it is worth mentioning that, previous embodiment is that the single color LED point lighted in LED display revises the bright concealed wire of splicing, correspondingly, aforesaid 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 as limit, also can light all LED modules with different colors lamp points in each LED pixel in LED display with same gray level (such as GTG 255) simultaneously and make each LED pixel present same color to carry out and splice bright concealed wire correction, such as RGB full-color LED display screen, the RGB LED point can lighted in each LED pixel with GTG 255 makes it present white, correspondingly, aforesaid display unit is single led pixel.
In sum, the above embodiment of the present invention utilizes the LED point lighting mode of spliced display screen such as LED display of design, also i.e. even bright piece of some bright screen body, only needs shooting two images just can accurately revise the bright concealed wire of splicing; Avoid existing method to take multiple images and make LED dot center calculate coarse problem.In addition, the embodiment of the present invention can remove the bright concealed wire of splicing of large resolution screen body fast, has very high practical value; In addition, existing method is undertaken splicing bright concealed wire by full frame analysis and is repaired, and introduce the problem that screen body homogeneity is deteriorated, and the embodiment of the present invention only carries out bright concealed wire repairing to the stitching portion between concatenation unit, can not introduce this problem.
So far, apply specific case herein and set forth the principle of the bright concealed wire modification method of splicing of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. splice a bright concealed wire modification method, it is characterized in that, comprise step:
A () determines the size of the multiple rectangle repetitives described spliced display screen being gone up along the line of the column direction repeated arrangement according to the size of the multiple concatenation units in spliced display screen, wherein described in each, rectangle repetitive comprises multiple display unit;
B () controls to light multiple display unit of described multiple rectangle repetitive the first corner position separately and forms bright piece of the first display for shooting and obtain first object image, and control to light multiple display unit of described multiple rectangle repetitive the second corner position separately and form bright piece of the second display for shooting and obtain the second target image, on the same diagonal line that wherein said first corner position and described corner position are positioned at described rectangle repetitive and corresponding described first bright piece of display and described second display bright piece of non-overlapping copies;
C () carries out image procossing to obtain the gray scale center of the first bright piece of display and bright piece of the second display described in each described in each respectively to described first object image and described second target image; And
The bright concealed wire of splicing that d correction coefficient that () calculates each edge display unit in the contiguous splicing gap of adjacent concatenation unit causes for splicing gap described in modifying factor, and specifically comprise following sub-step:
(d1) capable for each displaying block that there is bright piece of described first display bright piece or described second display in each of described first object image and described second target image, the gray scale centre distance in utilizing described displaying block capable between two described bright piece of first displays of the side in described splicing gap or every side or two described bright piece of second displays and corresponding number of display elements measure the capable display unit spacing of the described displaying block of correspondence;
(d2) lay respectively at gray scale centre distance between described bright piece of first display of two of the both sides in described splicing gap or two described bright piece of second displays and corresponding display unit quantity and described display unit spacing in utilizing described displaying block capable and obtain the capable splicing gap spacing of corresponding described displaying block; And
(d3) utilize described display unit spacing and described splicing gap spacing obtain described displaying block capable in the correction coefficient of multiple edges display unit in contiguous described splicing gap.
2. the bright concealed wire modification method of splicing as claimed in claim 1, it is characterized in that, step (d) also comprises sub-step: utilize least square method to carry out fitting a straight line, to revise the described correction coefficient of each edge display unit the correction coefficient of each edge display unit in the described splicing gap of vicinity of the adjacent concatenation unit calculated by sub-step (d1) to (d3).
3. the bright concealed wire modification method of splicing as claimed in claim 1, it is characterized in that, in sub-step (d1), being positioned at the side in described splicing gap or two described bright piece of first displays of every side or two described bright piece of second displays during described displaying block is capable is bright piece adjacent of two displays.
4. the bright concealed wire modification method of splicing as claimed in claim 1, is characterized in that, in sub-step (d3), and the correction coefficient coef of multiple edges display unit in contiguous described splicing gap during described displaying block is capable
bright=1+ ((e+d)/d-1)/2, wherein e represents the capable display unit spacing of corresponding described displaying block, and d represents the capable splicing gap spacing of corresponding described displaying block.
5. the bright concealed wire modification method of splicing as claimed in claim 1, is characterized in that, in step (a), the most bond length of described multiple concatenation unit is x; When the described first display size of bright piece is h1 × h1 and the size of described bright piece of second display is h2 × h2, then meet relational expression (h1+h2) × 3≤x; Wherein h1, h2 be greater than 1 natural number and can equal also can be unequal.
6. the bright concealed wire modification method of splicing as claimed in claim 1, it is characterized in that, described spliced display screen is LED display, and described multiple concatenation unit is LED box or LED lamp panel, and described display unit is LED point.
7. splice a bright concealed wire modification method, it is characterized in that, comprise step:
I () determines the first complementary screen body display unit lighting mode and the second screen body display unit lighting mode according to the size of the multiple concatenation units in spliced display screen, wherein said first screen body display unit lighting mode is for only making the capable display of odd number displaying block spaced multiple bright piece of first display in the row direction, described second screen body display unit lighting mode is for only making the capable display of even number displaying block spaced multiple bright piece of second display in the row direction, and described first bright piece of display and described bright piece of second display Heterogeneous Permutation in a column direction;
(ii) control to light described spliced display screen with described first screen body display unit lighting mode and obtain first object image for shooting, and control to light described spliced display screen with described second screen body display unit lighting mode and obtain the second target image for shooting;
(iii) image procossing is carried out respectively to obtain the gray scale center of the first bright piece of display and bright piece of the second display described in each described in each to described first object image and described second target image; And
(iv) the bright concealed wire of splicing that the correction coefficient calculating each edge display unit in the contiguous splicing gap of adjacent concatenation unit causes for splicing gap described in modifying factor.
8. the bright concealed wire modification method of splicing as claimed in claim 7, it is characterized in that, step (iv) comprises sub-step:
(iv1) capable for each displaying block that there is bright piece of described first display bright piece or described second display in each of described first object image and described second target image, the gray scale centre distance in utilizing described displaying block capable between two described bright piece of first displays of the side in described splicing gap or every side or two described bright piece of second displays and corresponding number of display elements measure the capable display unit spacing of the described displaying block of correspondence;
(iv2) lay respectively at gray scale centre distance between described bright piece of first display of two of the both sides in described splicing gap or two described bright piece of second displays and corresponding display unit quantity and described display unit spacing in utilizing described displaying block capable and obtain the capable splicing gap spacing of corresponding described displaying block; And
(iv3) utilize described display unit spacing and described splicing gap spacing obtain described displaying block capable in the correction coefficient of multiple edges display unit in contiguous described splicing gap.
9. the bright concealed wire modification method of splicing as claimed in claim 8, it is characterized in that, step (iv) also comprises sub-step: utilize least square method to carry out fitting a straight line, to revise the described correction coefficient of each edge display unit the correction coefficient of each edge display unit in the described splicing gap of vicinity of the adjacent concatenation unit calculated by sub-step (iv1) to (iv3).
10. the bright concealed wire modification method of splicing as claimed in claim 8, is characterized in that, in sub-step (iv3), and the correction coefficient coef of multiple edges display unit in contiguous described splicing gap during described displaying block is capable
bright=1+ ((e+d)/d-1)/2, wherein e represents the capable display unit spacing of corresponding described displaying block, and d represents the capable splicing gap spacing of corresponding described displaying block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510357954.2A CN104915922B (en) | 2015-06-25 | 2015-06-25 | Splice bright concealed wire modification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510357954.2A CN104915922B (en) | 2015-06-25 | 2015-06-25 | Splice bright concealed wire modification method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104915922A true CN104915922A (en) | 2015-09-16 |
| CN104915922B CN104915922B (en) | 2018-01-12 |
Family
ID=54084962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510357954.2A Active CN104915922B (en) | 2015-06-25 | 2015-06-25 | Splice bright concealed wire modification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104915922B (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321469A (en) * | 2015-11-12 | 2016-02-10 | 西安诺瓦电子科技有限公司 | Splicing bright and dark lines correcting method |
| CN106652885A (en) * | 2016-09-29 | 2017-05-10 | 南京宇丰晔禾信息科技有限公司 | Image processing based energy-saving method of LED display screen |
| CN107103874A (en) * | 2017-07-06 | 2017-08-29 | 苏州科达科技股份有限公司 | The spliced bright concealed wire bearing calibration of LED display and device |
| CN107742511A (en) * | 2017-11-08 | 2018-02-27 | 颜色空间(北京)科技有限公司 | The method and display methods that module mesopic vision gap eliminates after display screen splicing |
| CN108630142A (en) * | 2018-05-13 | 2018-10-09 | 上海诣阔软件有限公司 | A kind of correction LED display piece method |
| CN108648689A (en) * | 2018-06-09 | 2018-10-12 | 厦门强力巨彩光电科技有限公司 | A kind of LED display based on camera repaiies seam method and system automatically |
| CN109671388A (en) * | 2019-01-22 | 2019-04-23 | 利亚德光电股份有限公司 | The acquisition methods and device of correction data |
| CN110580874A (en) * | 2019-08-14 | 2019-12-17 | 武汉华星光电技术有限公司 | display panel driving method and display device |
| CN112150965A (en) * | 2019-06-27 | 2020-12-29 | 西安诺瓦星云科技股份有限公司 | Spliced bright and dark line correction method and spliced bright and dark line correction system |
| CN112289209A (en) * | 2020-10-20 | 2021-01-29 | 长春希达电子技术有限公司 | LED display box body and display screen splicing pixel interval brightness correction method |
| CN112529816A (en) * | 2020-12-22 | 2021-03-19 | 西安诺瓦星云科技股份有限公司 | Data processing method, data processing device, storage medium and computer equipment |
| CN112802425A (en) * | 2020-11-03 | 2021-05-14 | 长春希达电子技术有限公司 | Staggered optical gap correction method for LED display unit |
| CN112802426A (en) * | 2020-11-03 | 2021-05-14 | 长春希达电子技术有限公司 | LED display unit seam crossing type brightness correction method |
| CN113299231A (en) * | 2021-05-31 | 2021-08-24 | 浙江大华技术股份有限公司 | Method and device for adjusting light-emitting parameters, storage medium and electronic device |
| CN113327544A (en) * | 2021-08-04 | 2021-08-31 | 卡莱特云科技股份有限公司 | LED display screen contrast improving method based on diagonal display and LED display screen |
| CN113835562A (en) * | 2021-10-26 | 2021-12-24 | 业成科技（成都）有限公司 | Touch display device, touch correction method thereof, computer equipment and storage medium |
| CN114999335A (en) * | 2022-06-10 | 2022-09-02 | 长春希达电子技术有限公司 | LED spliced screen seam repairing method based on ultra-wide band and one-dimensional envelope peak |
| CN115547241A (en) * | 2022-06-21 | 2022-12-30 | 长春希达电子技术有限公司 | A kind of on-the-spot seam repair method for LED display screen |
| WO2023108550A1 (en) * | 2021-12-16 | 2023-06-22 | Jade Bird Display (Shanghai) Company | System for detecting pixel defect |
| CN116913197A (en) * | 2023-09-15 | 2023-10-20 | 武汉精立电子技术有限公司 | Pixel positioning method, pixel brightness extraction method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201041716Y (en) * | 2007-05-25 | 2008-03-26 | 天津光电星球阳光显示技术有限公司 | Full color LED display screen |
| CN102339565A (en) * | 2011-09-26 | 2012-02-01 | 王勇竞 | Seamless video display spliced wall |
| CN102768816A (en) * | 2012-07-30 | 2012-11-07 | 西安诺瓦电子科技有限公司 | Automatic LED (light-emitting diode) display screen correction method |
| CN103400549A (en) * | 2012-09-29 | 2013-11-20 | 西安诺瓦电子科技有限公司 | LED pixel correction coefficient uploading method of LED display screen |
-
2015
- 2015-06-25 CN CN201510357954.2A patent/CN104915922B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201041716Y (en) * | 2007-05-25 | 2008-03-26 | 天津光电星球阳光显示技术有限公司 | Full color LED display screen |
| CN102339565A (en) * | 2011-09-26 | 2012-02-01 | 王勇竞 | Seamless video display spliced wall |
| CN102768816A (en) * | 2012-07-30 | 2012-11-07 | 西安诺瓦电子科技有限公司 | Automatic LED (light-emitting diode) display screen correction method |
| CN103400549A (en) * | 2012-09-29 | 2013-11-20 | 西安诺瓦电子科技有限公司 | LED pixel correction coefficient uploading method of LED display screen |
Non-Patent Citations (1)
| Title |
|---|
| 郑瑞涛: "基于HVS的LED显示屏拼接亮暗线修正方法", 《中国优秀硕士论文全文数据库信息科技辑》 * |
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321469A (en) * | 2015-11-12 | 2016-02-10 | 西安诺瓦电子科技有限公司 | Splicing bright and dark lines correcting method |
| 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 |
| CN106652885A (en) * | 2016-09-29 | 2017-05-10 | 南京宇丰晔禾信息科技有限公司 | Image processing based energy-saving method of LED display screen |
| CN106652885B (en) * | 2016-09-29 | 2018-09-25 | 南京宇丰晔禾信息科技有限公司 | A kind of LED display power-economizing method based on image procossing |
| CN107103874A (en) * | 2017-07-06 | 2017-08-29 | 苏州科达科技股份有限公司 | The spliced bright concealed wire bearing calibration of LED display and device |
| CN107742511A (en) * | 2017-11-08 | 2018-02-27 | 颜色空间(北京)科技有限公司 | The method and display methods that module mesopic vision gap eliminates after display screen splicing |
| CN107742511B (en) * | 2017-11-08 | 2019-10-15 | 颜色空间(北京)科技有限公司 | The method and display methods that module mesopic vision gap is eliminated after display screen splicing |
| CN108630142A (en) * | 2018-05-13 | 2018-10-09 | 上海诣阔软件有限公司 | A kind of correction LED display piece method |
| CN108648689A (en) * | 2018-06-09 | 2018-10-12 | 厦门强力巨彩光电科技有限公司 | A kind of LED display based on camera repaiies seam method and system automatically |
| CN109671388A (en) * | 2019-01-22 | 2019-04-23 | 利亚德光电股份有限公司 | The acquisition methods and device of correction data |
| CN112150965B (en) * | 2019-06-27 | 2022-03-22 | 西安诺瓦星云科技股份有限公司 | Spliced bright and dark line correction method and spliced bright and dark line correction system |
| CN112150965A (en) * | 2019-06-27 | 2020-12-29 | 西安诺瓦星云科技股份有限公司 | Spliced bright and dark line correction method and spliced bright and dark line correction system |
| CN110580874A (en) * | 2019-08-14 | 2019-12-17 | 武汉华星光电技术有限公司 | display panel driving method and display device |
| US11189239B2 (en) | 2019-08-14 | 2021-11-30 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Driving method of display panel and display device |
| CN112289209A (en) * | 2020-10-20 | 2021-01-29 | 长春希达电子技术有限公司 | LED display box body and display screen splicing pixel interval brightness correction method |
| CN112289209B (en) * | 2020-10-20 | 2022-08-23 | 长春希达电子技术有限公司 | LED display box body and display screen abutted pixel interval brightness correction method |
| CN112802425A (en) * | 2020-11-03 | 2021-05-14 | 长春希达电子技术有限公司 | Staggered optical gap correction method for LED display unit |
| CN112802426A (en) * | 2020-11-03 | 2021-05-14 | 长春希达电子技术有限公司 | LED display unit seam crossing type brightness correction method |
| CN112802426B (en) * | 2020-11-03 | 2024-02-02 | 长春希达电子技术有限公司 | LED display unit seam crossing type brightness correction method |
| CN112529816A (en) * | 2020-12-22 | 2021-03-19 | 西安诺瓦星云科技股份有限公司 | Data processing method, data processing device, storage medium and computer equipment |
| CN112529816B (en) * | 2020-12-22 | 2024-06-07 | 西安诺瓦星云科技股份有限公司 | Data processing method, device, storage medium and computer equipment |
| CN113299231A (en) * | 2021-05-31 | 2021-08-24 | 浙江大华技术股份有限公司 | Method and device for adjusting light-emitting parameters, storage medium and electronic device |
| CN113299231B (en) * | 2021-05-31 | 2023-02-24 | 浙江大华技术股份有限公司 | Method and device for adjusting light-emitting parameters, storage medium and electronic device |
| CN113327544A (en) * | 2021-08-04 | 2021-08-31 | 卡莱特云科技股份有限公司 | LED display screen contrast improving method based on diagonal display and LED display screen |
| CN113835562B (en) * | 2021-10-26 | 2023-03-17 | 业成科技（成都）有限公司 | Touch display device, touch correction method thereof, computer equipment and storage medium |
| CN113835562A (en) * | 2021-10-26 | 2021-12-24 | 业成科技（成都）有限公司 | Touch display device, touch correction method thereof, computer equipment and storage medium |
| WO2023108550A1 (en) * | 2021-12-16 | 2023-06-22 | Jade Bird Display (Shanghai) Company | System for detecting pixel defect |
| CN114999335A (en) * | 2022-06-10 | 2022-09-02 | 长春希达电子技术有限公司 | LED spliced screen seam repairing method based on ultra-wide band and one-dimensional envelope peak |
| CN114999335B (en) * | 2022-06-10 | 2023-08-15 | 长春希达电子技术有限公司 | LED spliced screen seam repairing method based on ultra-wideband and one-dimensional envelope peak value |
| CN115547241A (en) * | 2022-06-21 | 2022-12-30 | 长春希达电子技术有限公司 | A kind of on-the-spot seam repair method for LED display screen |
| CN115547241B (en) * | 2022-06-21 | 2025-03-04 | 长春希达电子技术有限公司 | A method for repairing seams on-site of LED display screen |
| CN116913197A (en) * | 2023-09-15 | 2023-10-20 | 武汉精立电子技术有限公司 | Pixel positioning method, pixel brightness extraction method and system |
| CN116913197B (en) * | 2023-09-15 | 2024-01-16 | 武汉精立电子技术有限公司 | Pixel positioning method, pixel brightness extraction method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104915922B (en) | 2018-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104915922A (en) | Splicing bright-dark line correction method | |
| CN104916256A (en) | Splicing bright-dark line correction method | |
| CN105185314B (en) | LED display uniformity compensation method | |
| CN104966493B (en) | Splice bright concealed wire compensation method | |
| KR101165026B1 (en) | Image correction data generation system, image correction data generation method, image correction data generation program, and image correction circuit | |
| CN108630142A (en) | A kind of correction LED display piece method | |
| WO2020259150A1 (en) | Display device, display control method, and driving device | |
| US8681087B2 (en) | Image display device and image display method | |
| CN104992669A (en) | Splicing bright and dark line compensation method and device | |
| US9153204B2 (en) | Display device | |
| KR20180117717A (en) | System and method for calibrating a display system using manual and semi-automatic techniques | |
| CN103559862A (en) | Partition zone correcting method for LED display screen | |
| CN103778887A (en) | Method and device for correcting brightness of LED display device | |
| CN104992670A (en) | Splicing bright and dark line compensation method | |
| CN101546544A (en) | Video signal processing circuit, display apparatus, liquid crystal display apparatus, projection type display apparatus and video signal processing method | |
| CN109495729B (en) | Projection picture correction method and system | |
| CN105390111A (en) | Detection method and device of time sequence controller | |
| WO2014167641A1 (en) | Brightness measurement method, brightness measurement device, and image quality adjustment technology using same | |
| CN105321467B (en) | LED display control system receives card and splices bright concealed wire modification method | |
| JP6377011B2 (en) | Luminance measuring method, luminance measuring apparatus, and image quality adjustment technology using them | |
| CN109949744A (en) | Gamma voltage correction method and device | |
| KR20170047449A (en) | Display device and luminance correction method of the same | |
| US20210358426A1 (en) | Display driving device and driving method | |
| US10354577B1 (en) | Masking non-functioning pixels in a display | |
| CN106526974A (en) | Method and system for adjusting optical uniformity of liquid crystal modules |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 710075 DEF101, Zero One Square, Xi'an Software Park, No. 72 Zhangbajie Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee after: Xi'an Nova Nebula Technology Co., Ltd. Address before: 710075 Qinfengge D District 401, Xi'an Software Park, 68 Science and Technology Second Road, Xi'an High-tech Zone, Shaanxi Province Patentee before: Xian Novastar Electronic Technology Co., Ltd. |
|
| CP03 | Change of name, title or address |