CN107633806A - LED display blocks correction processing method - Google Patents
LED display blocks correction processing method Download PDFInfo
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- CN107633806A CN107633806A CN201610560776.8A CN201610560776A CN107633806A CN 107633806 A CN107633806 A CN 107633806A CN 201610560776 A CN201610560776 A CN 201610560776A CN 107633806 A CN107633806 A CN 107633806A
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Abstract
The present invention proposes that a kind of LED display blocks correction processing method, including step：The each LED point of lamp point gathered data acquisition based on destination display area blocks raw score；Detected based on lamp point gathered data in each LED point and block marginal point, to obtain blocking endpoint detections result；With reference to each LED point block raw score and block that endpoint detections result obtains each LED point blocks amendment score；Lamp point is blocked according to blocking in each LED point of amendment score detection, to obtain blocking lamp point testing result；And (e) step through each LED point block lamp point testing result, and be that the lamp point gathered data of unshielding lamp neighborhood of a point LED point corrects the lamp point gathered data of current LED point using the multiple of current LED point when current LED point is to block lamp point.Therefore the present invention can with the complicated circumstance of occlusion of convenient, fast processing, and not by lamp point gathered data gradients affect and can ensure to block object marginal position effect.
Description
Technical field
Show that correction process side is blocked in alignment technique field, more particularly to a kind of LED display the present invention relates to LED
Method.
Background technology
In the last few years, with the extensive use of area array CCD camera and the fast development of computer technology, LED display
Pointwise correction industry has obtained unprecedented technical support so that the uniformity and one of LED display bright chroma pointwise correction effect
Cause property is all largely improved.Operating efficiency, correction accuracy, the stability of other related pointwise correction product also have
Different degrees of lifting, therefore by LED display production firm and the vast favorable comment of user, but in some actual schools
Positive scene be still likely to occur before special circumstances and problem, such as LED display live wire by or branch block etc. it is existing
As.In trimming process engineer how to select seat in the plane (camera acquisition angles) can not all avoid it is this block, so as to lead
Cause pointwise correction can not collect the LED of occlusion area and light chromatic value, for such band blocks gathered data, its
Maximum feature is exactly that occlusion area lamp point amplitude and normal acquisition lamp point amplitude difference are very big, it is more likely that so that gathered data
Curved surface amendment there is relatively large deviation, reflect that in final screen sports school plus effect be that blocking position the bad exception of transition occurs
Patch, this phenomenon will seriously affect viewing effect of the user to LED display, and pointwise correction institute is unacceptable.
The gathered data blocked for band, it can reset by calculating gathered data ensemble average value and block defect inspection
Threshold value (ensemble average value percentage) is surveyed, so as to detect to block defect lamp point；Again to blocking defect lamp point directly using overall
Average value is replaced, so as to eliminate the amplitude difference of defect lamp point and normal acquisition lamp point.However, the collection number that 1) if band blocks
According to larger gradient itself be present, (essence as produced by camera perspective, feature has that the small intermediate magnitude of surrounding amplitude is big, left side amplitude is small
The right amplitude is big etc.), then the ensemble average value percentage threshold of drawbacks described above lamp point processing method can directly fail；And 2)
The ensemble average value percentage threshold of drawbacks described above lamp point processing method only blocks half left side for blocking the marginal position of object
The situation treatment effect of right LED point is poor, reflects in correction of a final proof effect that blocking object edge contour a circle occurs substantially
Abnormal lamp point.
The content of the invention
Therefore, Correction Problemss are blocked based on prior art LED display, the present invention proposes that a kind of LED display is blocked
Correction processing method, it can solve the problems, such as that LED display blocks correction and abnormal patch occurs to a certain extent, so as to
So that the pointwise correction uniformity consistency based on image collecting device such as area array cameras gets a promotion, meet more wide variety of user
Demand.
Specifically, a kind of LED display that the embodiment of the present invention proposes blocks correction processing method, including step：(a)
The each LED point of lamp point gathered data acquisition of destination display area based on LED display blocks raw score；(b)
Detected based on the lamp point gathered data in each LED point and block marginal point, edge is blocked with obtain each LED point
Point testing result；(c) blocking raw score and block endpoint detections result and obtain each LED with reference to each LED point
Point blocks amendment score；(d) lamp point is blocked according to blocking in each LED point of amendment score detection for each LED point,
Lamp point testing result is blocked with obtain each LED point；And (e) step through each LED point block lamp point detection
As a result, it is and when current LED point is to block lamp point unshielding lamp neighborhood of a point LED using the multiple of current LED point
The lamp point gathered data of point updates the lamp point gathered data of current LED point.
In one embodiment of the invention, step (a) includes：(a1) each LED of the destination display area is calculated
The lamp point brightness data of the lamp point ratio with the average of the lamp point brightness data of the destination display area respectively；With
And (a2) is segmented the ratio of each LED point and to obtain blocking for each LED point using piecewise function original
Score.
In one embodiment of the invention, the piecewise function in step (a2) is：
Wherein, ratio (i, j) denotation coordination position for (i, j) LED point the ratio, originScore (i,
J) raw score is blocked in denotation coordination position for the described of the LED point of (i, j).
In one embodiment of the invention, step (b) includes：(b1) examined according to the lamp point gathered data using edge
Measuring and calculating calculates the Grad of each LED point；And (b2) judges whether the Grad of each LED point is more than one by one
The threshold value of setting blocks marginal point to determine whether, so as to which obtain each LED point blocks endpoint detections result.
In one embodiment of the invention, step (c) includes：(c1) travel through the described of each LED point and block edge
Point testing result, calculate the minimum range of each LED point range shelter marginal point；And (c2) to each LED
The minimum range of point is segmented and obtains the institute of each LED point with reference to the raw score that blocks using piecewise function
State and block amendment score.
In one embodiment of the invention, step (c1) includes：Masterplate is traveled through with default size and begins stepping through current LED
The described of lamp point blocks endpoint detections result, blocks marginal point when being not present in the default size traversal masterplate, then by institute
State the row, column of traversal masterplate from increase it is default be worth to new traversal masterplate and search in the new traversal masterplate block marginal point.
In one embodiment of the invention, the piecewise function in step (c2) is：
Wherein, raw score, d are blocked in originScore (i, j) denotation coordination position for the described of the LED point of (i, j)
(i, j) denotation coordination position is the minimum range of the LED point of (i, j), and amendScore (i, j) denotation coordination position is
The described of the LED point of (i, j) blocks amendment score.
In one embodiment of the invention, step (d) includes：Judge that the described of each LED point blocks amendment one by one
Whether score is more than the threshold value of setting, if greater than the threshold value of the setting, then judge current LED point for block lamp point and to
Give the first mark, it is on the contrary then judge current LED point for unshielding lamp point and give the second mark, so as to obtain each LED
Point blocks lamp point testing result.
In one embodiment of the invention, step (e) includes：(e1) if blocking lamp point testing result represents current traversal
LED point to block lamp point, count the unshielding lamp point in the default size masterplate centered on the LED point currently traveled through
Number；And (e2) uses each unshielding lamp of statistics when the number of the unshielding lamp point of statistics meets preparatory condition
The average value of the lamp point gathered data of point replaces the lamp point gathered data of the LED point currently traveled through.
In one embodiment of the invention, step (e) also includes：(e3) when the number of the unshielding lamp point of statistics is discontented with
During the foot preparatory condition, the row, column of the default size masterplate is increased into size masterplate from default be worth to is increased, and count institute
State the number of the unshielding lamp point in increase size masterplate.
From the foregoing, it will be observed that the LED display of the embodiment of the present invention, which blocks correction processing method, can reach following beneficial effect
Fruit：1) any correction scene can the convenient, fast complicated circumstance of occlusion of processing；And 2) not by the gradient shadow of lamp point gathered data
Ring, and can ensure to block object marginal position effect.
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.It is it should also be noted that unless another
Point out outside, it is not necessary to which scale accompanying drawing, they only try hard to conceptually illustrate 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.
Figure 1A and Figure 1B is the lamp point brightness data for the LED display destination display area for being relevant to the embodiment of the present invention
Carry out blocking the comparison design sketch before and after correction process.
Fig. 2 is the flow chart that a kind of LED display that the embodiment of the present invention proposes blocks correction processing method.
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.
The following embodiments of the present invention block the abnormal patch of correction appearance for prior art LED display or block object
The problem of edge contour treatment effect is poor, it is proposed that a kind of LED display blocks correction processing method, and this method is logical first
The lamp point gathered data blocked for band is crossed to be given a mark point by point, then by calculating point-by-point position and blocking object edge light point
The distance relation of position is modified to blocking raw score, is then determine whether and is blocked lamp according to blocking amendment score
Point, finally updated using the multiple lamp point gathered datas for unshielding lamp neighborhood of a point LED point for blocking lamp point and block lamp point
Lamp point gathered data, this method can preferably solve the problems, such as to block the defects of correction occurs.
Specifically, a kind of LED display that the embodiment of the present invention proposes blocks correction processing method, and wherein LED is shown
Device is, for example, LED display, LED box even LED lamp panel, and its specific implementation is as follows：
(i) what lamp point brightness data based on collection obtained each LED point blocks raw score
For LED display destination display area (its can be LED display whole viewing area, also may be used
Think partial display area) each LED point carry out monochrome image acquisition to obtain lamp point brightness data, node-by-node algorithm target
The lamp point brightness data of each LED point and the ratio of average of viewing area, formula specific as follows：
Wherein, lum (i, j) represents that coordinate position lights the number of degrees for the lamp of the LED point of (i, j) in destination display area
According to average represents the average of the lamp point brightness data of each LED point of destination display area, and ratio (i, j) represents to sit
Mark is set to the lamp point brightness data of the LED point of (i, j) relative to the ratio of average；
Next, utilized in conjunction with the lamp point brightness data of each LED point relative to the ratio r atio (i, j) of average
The each LED point of following formula node-by-node algorithm blocks raw score：
Wherein, ratio (i, j) denotation coordination position is the lamp point brightness data of the LED point of (i, j) relative to average
Raw score is blocked in ratio, originScore (i, j) denotation coordination position for the LED point of (i, j)；Herein, score is blocked
It is higher, when the probability that headlight point is removed is bigger.In addition it is noted that blocking the piecewise function of raw score for calculating
In waypoint be not limited in formula 0.25,1 and 1.75, it is only for example, not be used for limit the present invention.
(ii) the lamp point brightness data based on collection detects in each LED point and blocks marginal point
The purpose of rim detection is that object marginal position is blocked in extraction, conventional detective operators have it is many as Roberts operators,
Sobel operators, Prewitt operators, Laplace operators, Log operators, Canny operators etc., the present embodiment select Sobel operators
Rim detection is carried out, and the horizontal and vertical warp factor of Sobel operators is as follows：
Wherein, GxAnd GyRepresent horizontal and vertical warp factor；
Then, lamp point brightness data is stepped through by 3*3 convolution masterplates, then calculated when the brightness data gradient of headlight point
Value is shown below：
Wherein, G is represented to work as headlight degree of lighting Grad, and the 3*3 lamp in 3*3 masterplates that L represents currently to traverse is lighted
Degrees of data.
Next, it is judged that when luminance gradient value G be more than threshold value (here threshold value can experience setting arbitrary value, can also pass through it
Its adaptive algorithm is set), then it is assumed that current LED point is blocks marginal point juxtaposition 1 as endpoint detections result is blocked, instead
Not think it is to block marginal point and set to 0 as blocking endpoint detections result.
(iii) combine the lamp point brightness data of collection and block endpoint detections modified result and block raw score
The minimum range of each LED point range shelter edge point position is calculated, specifically can be first by lowest distance value
The ultimate range constant k of experience setting is initialized to, then is begun stepping through from 3*3 size masterplates and blocks endpoint detections number of results
According to judgement is as follows：
1) if marginal point is blocked in presence in 3*3 sizes masterplate and current LED point is small with blocking the distance between marginal point
When current lowest distance value, then lowest distance value is updated；
If 2) increase preset value example certainly in the absence of the size row, column for when blocking marginal point, traveling through masterplate in 3*3 sizes masterplate
Such as 1 continues cycling through traversal, and terminates when from increment more than k；
3) is so circulated, untill each LED point calculates lowest distance value；
And then combine blocking for the lowest distance value each LED point of calculating for blocking raw score and each LED point
Score is corrected, is shown below：
Wherein, raw score is blocked in originScore (i, j) denotation coordination position for the LED point of (i, j), d (i,
J) denotation coordination position is the lowest distance value of the LED point range shelter marginal point of (i, j), and amendScore (i, j) is represented
Coordinate position blocks amendment score for the LED point of (i, j).In addition it is noted that blocking raw score for calculating
Piecewise function in waypoint be not limited in formula 0 to 6, it is only for example, not be used for limit the present invention.
(iv) basis is blocked in each LED point of amendment score detection and blocks lamp point
Step through judgement：When blocking amendment score amendScore (i, j), more than threshold value, (threshold value is that experience is set here
0~100 internal constant, the present embodiment is for example from 50), then it is assumed that current LED point is blocks (namely the mark of lamp point juxtaposition 1
1) to block lamp point testing result as it, on the contrary think normal LED point (namely unshielding lamp point) and set to 0 (namely mark
0) to block lamp point testing result as it.
(v) the lamp point brightness data of unshielding lamp neighborhood of a point LED point is utilized as to correct be block lamp point current
The lamp point brightness data of LED point
Step through lamp point brightness data and each LED point blocks lamp point testing result, judges as follows：
1) if the lamp point testing result of blocking of the current LED points of is 1, using current LED point as masterplate center statistics one
The unshielding lamp point number being sized in (such as more than 5*5) masterplate, if number reach certain required amount (such as 10 and with
On), then the average value of the lamp point brightness data of these unshielding lamp points is calculated, and the lamp for replacing current LED point lights the number of degrees
According to；If the inadequate required amount of number, the row, column of certain size masterplate continues cycling through traversal from preset value such as 1 is increased；
2) if the shadowing result of the current LED points of is 0, directly skip；
3) the such traversal loops of, untill the lamp point brightness data of each LED point accessed or be treated；Extremely
This completion LED display blocks correction process.
Referring to Figure 1A and Figure 1B, it is the lamp point for the LED display destination display area for being relevant to the embodiment of the present invention
Brightness data carries out blocking the comparison design sketch before and after correction process.Specifically, Figure 1A be block it is bright before correction process
Distribution map is spent, it can significantly see the profile for blocking object；And Figure 1B blocking at correction for the progress embodiment of the present invention
Intensity map after reason method, it is clear that the brightness of the lamp point position where masking object is effectively corrected.
In addition, it is noted that present invention considers that efficiency is only carried out to the lamp point brightness data of collection
Correct to solve the problems, such as to block the defects of correction occurs, but the present invention is not limited thereto, certainly can also be to the lamp point of collection
Chroma data is modified；And it is well known that in color space lamp point chroma data typically represented by two components,
Therefore, it is necessary to enter respectively to each chromatic component data during realization is modified to the lamp point chroma data of collection
The processing procedure of the similar aforementioned lamps point brightness data of row.In addition, for ease of statement, herein by the lamp point brightness data and lamp of collection
Point chroma data is referred to as lamp point gathered data；Consequently, it is possible to a kind of LED display that the embodiment of the present invention proposes blocks school
Positive processing method can be summarized as flow chart as shown in Figure 2, and detail refers to preceding description, will not be repeated here.
In summary, the LED display that the embodiment of the present invention proposes blocks correction processing method, and can reach following has
Beneficial effect：1) any correction scene can the convenient, fast complicated circumstance of occlusion of processing；And 2) not by the ladder of lamp point gathered data
Degree influences, and can ensure to block object marginal position effect.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the technical spirit pair according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of LED display blocks correction processing method, it is characterised in that including step：
(a) it is original to obtain blocking for each LED point for the lamp point gathered data of the destination display area based on LED display
Point；
(b) detected based on the lamp point gathered data in each LED point and block marginal point, to obtain each LED point
Block endpoint detections result；
(c) blocking raw score and block endpoint detections result and obtain blocking for each LED point with reference to each LED point
Correct score；
(d) lamp point is blocked according to blocking in each LED point of amendment score detection for each LED point, to obtain each LED
Lamp point blocks lamp point testing result；And
(e) step through each LED point blocks lamp point testing result, and is to block lamp point in the LED point currently traveled through
The multiple lamp point gathered datas for unshielding lamp neighborhood of a point LED point for the LED point that Shi Liyong is currently traveled through are worked as to correct
The lamp point gathered data of the LED point of preceding traversal.
2. LED display as claimed in claim 1 blocks correction processing method, it is characterised in that step (a) includes：
(a1) the lamp point brightness data for calculating each LED point of the destination display area is shown with the target respectively
The ratio of the average of the lamp point brightness data in region；And
(a2) ratio of each LED point is segmented and blocks original using what piecewise function obtained each LED point
Beginning score.
3. LED display as claimed in claim 2 blocks correction processing method, it is characterised in that point in step (a2)
Section function be：
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Wherein, ratio (i, j) denotation coordination position for (i, j) LED point the ratio, originScore (i, j) table
Show that the described of the LED point that coordinate position is (i, j) blocks raw score.
4. LED display as claimed in claim 1 blocks correction processing method, it is characterised in that step (b) includes：
(b1) Grad of each LED point is calculated using edge detection operator according to the lamp point gathered data；And
(b2) judge whether the Grad of each LED point is more than the threshold value set and blocks edge to determine whether one by one
Point, so as to which obtain each LED point blocks endpoint detections result.
5. LED display as claimed in claim 1 blocks correction processing method, it is characterised in that step (c) includes：
(c1) travel through the described of each LED point and block endpoint detections result, calculate each described LED point range shelter
The minimum range of marginal point；And
(c2) minimum range of each LED point is segmented and blocks raw score with reference to described using piecewise function
Obtain the described of each LED point and block amendment score.
6. LED display as claimed in claim 5 blocks correction processing method, it is characterised in that step (c1) includes：
Begun stepping through with default size traversal masterplate and block endpoint detections result described in current LED point, when described default
In the absence of marginal point is blocked in size traversal masterplate, then the row, column for traveling through masterplate is newly traveled through into mould from default be worth to is increased
Version and search it is described it is new traversal masterplate in block marginal point.
7. LED display as claimed in claim 5 blocks correction processing method, it is characterised in that point in step (c2)
Section function be：
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<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mn>30</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>1</mn>
<mo><</mo>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>&le;</mo>
<mn>2</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>o</mi>
<mi>r</mi>
<mi>i</mi>
<mi>g</mi>
<mi>i</mi>
<mi>n</mi>
<mi>S</mi>
<mi>c</mi>
<mi>o</mi>
<mi>r</mi>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mn>25</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>2</mn>
<mo><</mo>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>&le;</mo>
<mn>3</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
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<mi>r</mi>
<mi>i</mi>
<mi>g</mi>
<mi>i</mi>
<mi>n</mi>
<mi>S</mi>
<mi>c</mi>
<mi>o</mi>
<mi>r</mi>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mn>20</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>3</mn>
<mo><</mo>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
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</mrow>
<mo>&le;</mo>
<mn>4</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>o</mi>
<mi>r</mi>
<mi>i</mi>
<mi>g</mi>
<mi>i</mi>
<mi>n</mi>
<mi>S</mi>
<mi>c</mi>
<mi>o</mi>
<mi>r</mi>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mn>15</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>4</mn>
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<mi>d</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>&le;</mo>
<mn>5</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>o</mi>
<mi>r</mi>
<mi>i</mi>
<mi>g</mi>
<mi>i</mi>
<mi>n</mi>
<mi>S</mi>
<mi>c</mi>
<mi>o</mi>
<mi>r</mi>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mn>10</mn>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>5</mn>
<mo><</mo>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo><</mo>
<mn>6</mn>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mi>o</mi>
<mi>r</mi>
<mi>i</mi>
<mi>g</mi>
<mi>i</mi>
<mi>n</mi>
<mi>S</mi>
<mi>c</mi>
<mi>o</mi>
<mi>r</mi>
<mi>e</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
<mo>,</mo>
</mrow>
</mtd>
<mtd>
<mrow>
<mn>6</mn>
<mo>&le;</mo>
<mi>d</mi>
<mrow>
<mo>(</mo>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mo>)</mo>
</mrow>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
</mrow>
Wherein, raw score is blocked in originScore (i, j) denotation coordination position for the described of the LED point of (i, j), d (i,
J) denotation coordination position for (i, j) LED point the minimum range, amendScore (i, j) denotation coordination position for (i,
J) the described of LED point blocks amendment score.
8. LED display as claimed in claim 1 blocks correction processing method, it is characterised in that step (d) includes：
The threshold value blocked amendment score and whether be more than setting of each LED point is judged one by one, if greater than the setting
Threshold value, then judge current LED point to block lamp point and giving the first mark, it is on the contrary then judge that current LED point is non-screening
Gear lamp point simultaneously gives the second mark, so as to which obtain each LED point blocks lamp point testing result.
9. LED display as claimed in claim 1 blocks correction processing method, it is characterised in that step (e) includes：
(e1) if it is to block lamp point, the LED for counting currently to travel through to block the LED point that lamp point testing result represents currently to travel through
The number of the unshielding lamp point in default size masterplate centered on lamp point；And
(e2) when the number of the unshielding lamp point of statistics meets preparatory condition, the lamp point of each unshielding lamp point of statistics is used
The average value of gathered data replaces the lamp point gathered data of the LED point currently traveled through.
10. LED display as claimed in claim 9 blocks correction processing method, it is characterised in that step (e) also includes：
(e3) when the number of the unshielding lamp point of statistics is unsatisfactory for the preparatory condition, by the row of the default size masterplate,
Row increase size masterplate from default be worth to is increased, and count the number of the unshielding lamp point in the increase size masterplate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114241959A (en) * | 2021-11-18 | 2022-03-25 | 浙江大华技术股份有限公司 | Abnormal light point detection method, display device and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080056604A1 (en) * | 2006-09-05 | 2008-03-06 | Samsung Electronics Co., Ltd. | Method, medium and system processing image signals |
| CN101377450A (en) * | 2008-09-19 | 2009-03-04 | 北京巨数数字技术开发有限公司 | System and method for extracting lightness data of display screen dot matrix |
| CN102723054A (en) * | 2012-06-18 | 2012-10-10 | 西安电子科技大学 | Online calibration system and online calibration method for ununiformity of LED (light-emitting diode) display screen |
| CN104900178A (en) * | 2015-06-18 | 2015-09-09 | 西安诺瓦电子科技有限公司 | Method for detecting images with brightness abnormality and LED display screen uniformity correction method |
| CN105139800A (en) * | 2015-08-28 | 2015-12-09 | 西安诺瓦电子科技有限公司 | Abnormal lamp point processing method after correction of LED display device |
| CN105185302A (en) * | 2015-08-28 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Correction method for light point position deviation among monochromatic images and application thereof |
| CN105390092A (en) * | 2015-12-09 | 2016-03-09 | 西安诺瓦电子科技有限公司 | LED display screen image processing method, device and application thereof |
-
2016
- 2016-07-15 CN CN201610560776.8A patent/CN107633806B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080056604A1 (en) * | 2006-09-05 | 2008-03-06 | Samsung Electronics Co., Ltd. | Method, medium and system processing image signals |
| CN101377450A (en) * | 2008-09-19 | 2009-03-04 | 北京巨数数字技术开发有限公司 | System and method for extracting lightness data of display screen dot matrix |
| CN102723054A (en) * | 2012-06-18 | 2012-10-10 | 西安电子科技大学 | Online calibration system and online calibration method for ununiformity of LED (light-emitting diode) display screen |
| CN104900178A (en) * | 2015-06-18 | 2015-09-09 | 西安诺瓦电子科技有限公司 | Method for detecting images with brightness abnormality and LED display screen uniformity correction method |
| CN105139800A (en) * | 2015-08-28 | 2015-12-09 | 西安诺瓦电子科技有限公司 | Abnormal lamp point processing method after correction of LED display device |
| CN105185302A (en) * | 2015-08-28 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Correction method for light point position deviation among monochromatic images and application thereof |
| CN105390092A (en) * | 2015-12-09 | 2016-03-09 | 西安诺瓦电子科技有限公司 | LED display screen image processing method, device and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114241959A (en) * | 2021-11-18 | 2022-03-25 | 浙江大华技术股份有限公司 | Abnormal light point detection method, display device and storage medium |
| CN114241959B (en) * | 2021-11-18 | 2024-05-14 | 浙江大华技术股份有限公司 | Abnormal lamp spot detection method, display device and storage medium |
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