CN102750123A - Method and device for eliminating splicing seams of spliced wall based on ultrahigh-resolution digital display - Google Patents
Method and device for eliminating splicing seams of spliced wall based on ultrahigh-resolution digital display Download PDFInfo
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- CN102750123A CN102750123A CN201210223658XA CN201210223658A CN102750123A CN 102750123 A CN102750123 A CN 102750123A CN 201210223658X A CN201210223658X A CN 201210223658XA CN 201210223658 A CN201210223658 A CN 201210223658A CN 102750123 A CN102750123 A CN 102750123A
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Abstract
The embodiment of the invention discloses a method and a device for eliminating splicing seams of a spliced wall based on ultrahigh-resolution digital display. The method comprises the following steps of: performing coarse positioning on the splicing seams; comparing all points in the positioned splicing seams according to a first comparison parameter and determining the edge coordinates of the splicing seams according to extreme values obtained by comparison; excluding points which meet exclusion conditions according to comparative values obtained by comparing the edge coordinates of the splicing seams with a second comparison parameter; and utilizing the edge coordinates of the splicing seams and the excluded points which meet the exclusion conditions to obtain splicing seam fine positioning results, and performing frame-by-frame fusion. By virtue of performing coarse positioning on the splicing seams, comparing all the points in the splicing seams according to the first comparison parameter and determining the edge coordinates of the splicing seams according to the comparison result, the size of the splicing seams can be reduced; and according to the comparative values obtained by comparing the edge coordinates of the splicing seams and the second comparison parameter, the points of non-splicing seams are excluded, i.e., the interference such as shielding of objects can be eliminated, so that the technical effect of improving the splicing seam positioning accuracy is achieved.
Description
Technical field
The present invention relates to the mobile communication technology field, more particularly, relate to a kind of method of seam-line elimination and device based on ultrahigh resolution digital jointing wall.
Background technology
Ultrahigh resolution numeral display splicing wall VW has ultrahigh resolution, can support and handle the multisignal source signal, and can realize the seamless demonstration of picture, is extensively promoted in common presentation, collection control field.Said display splicing wall is spliced by the polylith LCD screen; Splicing inevitably can produce splicing seams; The existence of splicing seams can make the screen picture display effect produce the slack harmful effect of vision, and how reducing even eliminating the combination splicing seams is the importance that improves the VW display effect.
Existing reduction combination splicing seams is that the method for the influence that brings of display effect is the harmful effect that splicing seams causes to be eliminated in procedure for displaying through the improvement video image processing technology; Comprise the location of splicing seams and the fusion of splicing seams, wherein the location of splicing seams can be confirmed through the method for manual demarcation or additional testing frame; The fusion of splicing seams utilizes the pixel on splicing seams both sides to carry out linear interpolation, and the result of interpolation is replaced said splicing seams.
Yet the aggravation that in practical application, causes splicing seams to influence for the shake that prevents camera lens; Splicing seams size behind the said splicing seams location is often wide than actual conditions; Perhaps when similar splicing seams image being arranged near the splicing seams or stops object; Error will appear in the location of splicing seams, thereby there is the technical matters of splicing seams accurate positioning property difference in existing method of seam-line elimination.
Summary of the invention
In view of this, the present invention provides a kind of method of seam-line elimination and device based on ultrahigh resolution digital jointing wall, to realize the technique effect of splicing seams accurate positioning property raising.
A kind of method of seam-line elimination based on ultrahigh resolution digital jointing wall comprises:
Splicing seams is carried out coarse positioning;
The each point of orientating as in the splicing seams is compared according to first control parameters each other, and confirm splicing seams edge coordinate according to the extreme value that comparison obtains;
According to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain, the point that satisfies exclusion condition is got rid of;
The point that satisfies exclusion condition according to said splicing seams edge coordinate and eliminating obtains splicing seams refinement positioning result and pursues frame merging.
In order to improve such scheme, also can comprise:
From said splicing seams, extract the splicing seams gradient map;
Said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
Carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively, wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate;
The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
Preferably:
Splicing seams positioned is specially:
Splicing seams is carried out the location based on the additional testing frame method.
The each point of orientating as in the splicing seams is compared each other and is specially according to first control parameters:
In horizontal splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to go according to brightness value, confirm splicing seams edge ordinate according to the maximum brightness value that comparison obtains;
In vertical splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to be listed as according to brightness value, confirm splicing seams edge horizontal ordinate according to the maximum brightness value that comparison obtains.
According to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain, the point that satisfies exclusion condition is got rid of, be specially:
When the fiducial value that the difference and the presetted pixel value of said horizontal projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
When the fiducial value that the difference and the presetted pixel value of said vertical projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value.
According to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain, the point that satisfies exclusion condition is got rid of, be specially:
Detecting on splicing seams unit's section of dividing in advance on the horizontal projection curve, as possessing upper edge extreme point coordinate, abandoning handling the each point on this splicing seams unit's section of dividing in advance greater than lower edge extreme point coordinate;
Detecting on the vertical projection curve on splicing seams unit's section of dividing in advance, as possess left margin extreme point coordinate greater than the right along the extreme point coordinate, abandon handling the each point on this splicing seams unit's section of dividing in advance.
In order to improve such scheme, also can comprise:
Judge the colour-difference of splicing seams both sides,, then abandon handling this point on this splicing seams unit's section of dividing in advance if the colour-difference of certain some both sides is greater than given threshold value in the splicing seams.
A kind of splicing seams cancellation element based on ultrahigh resolution digital jointing wall comprises:
The coarse positioning unit is used for splicing seams is carried out coarse positioning;
Splicing seams edge coordinate and splicing seams width are confirmed the unit, are used for the each point of orientating splicing seams as is compared according to first control parameters each other, and confirm splicing seams edge coordinate and splicing seams width according to the extreme value that comparison obtains;
The point rejected unit is used for the fiducial value that said splicing seams width and second control parameters relatively obtain is satisfied the some eliminating of exclusion condition;
Integrated unit is used for according to said splicing seams edge coordinate and gets rid of the point that satisfies exclusion condition obtaining splicing seams refinement positioning result and pursue frame merging.
In order to improve such scheme, also can comprise:
Secondary coarse positioning unit, the concrete realization:
From said splicing seams, extract the splicing seams gradient map;
Said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
Carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively, wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate;
The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
Preferably, the some rejected unit is specifically realized:
When the fiducial value that the difference and the presetted pixel value of said horizontal projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
When the fiducial value that the difference and the presetted pixel value of said vertical projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
And:
Detecting on splicing seams unit's section of dividing in advance on the horizontal projection curve, as possessing upper edge extreme point coordinate, abandoning handling the each point on this splicing seams unit's section of dividing in advance greater than lower edge extreme point coordinate;
Detecting on the vertical projection curve on splicing seams unit's section of dividing in advance, as possess left margin extreme point coordinate greater than the right along the extreme point coordinate, abandon handling the each point on this splicing seams unit's section of dividing in advance.
Can find out from above-mentioned technical scheme, in the embodiment of the invention, through to carrying out the splicing seams of coarse positioning; Confirm splicing seams edge coordinate through the each point in the splicing seams according to the first control parameters comparison result; Realized reducing of splicing seams size,, got rid of the point of non-splicing seams according to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain; Just get rid of the interference that object blocks etc., reached the technique effect of splicing seams accurate positioning property raising.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the disclosed a kind of method of seam-line elimination process flow diagram based on ultrahigh resolution digital jointing wall of the embodiment of the invention;
Fig. 2 a is the disclosed a kind of method of seam-line elimination process flow diagram based on ultrahigh resolution digital jointing wall of the embodiment of the invention;
Fig. 2 b is the pixel projection figure of the disclosed a kind of splicing seams based on ultrahigh resolution digital jointing wall of the embodiment of the invention based on gradient map;
Fig. 3 is the disclosed a kind of method of seam-line elimination process flow diagram based on ultrahigh resolution digital jointing wall of the embodiment of the invention;
Fig. 4 is the disclosed a kind of splicing seams cancellation element structural representation based on ultrahigh resolution digital jointing wall of the embodiment of the invention;
Fig. 5 is the disclosed a kind of splicing seams cancellation element structural representation based on ultrahigh resolution digital jointing wall of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
A kind of method of seam-line elimination and device based on ultrahigh resolution digital jointing wall are to realize the technique effect of splicing seams accurate positioning property raising.
Fig. 1 shows a kind of method of seam-line elimination based on ultrahigh resolution digital jointing wall, comprising:
Step 11: splicing seams is carried out coarse positioning;
Splicing seams is carried out the location based on the additional testing frame method, comprising:
The extraction of splicing seams; Convert video image to gray level image; Obtain the gradient map of horizontal direction and vertical direction respectively; With the gradient map binary conversion treatment; Said gradient binary map by after the frame stack, is carried out the Hough conversion, utilize totalizer record coversion result; Obtain the corresponding straight-line equation of splicing seams according to the totalizer result; Pairing point keeps during greater than the conversion threshold value with the totalizer result; Filling cavity is widened the splicing seams scope; Remove burr;
Merge if directly use the splicing seams figure that obtains of step, syncretizing effect is unfavorable often, must be directed against refinement and the screening that each two field picture carries out splicing seams.
Step 12: the each point that will orientate as in the splicing seams is compared according to first control parameters each other, and confirms splicing seams edge coordinate according to the extreme value that comparison obtains;
Said first control parameters can be the parameter that splicing seams position and screen position are distinguished in brightness etc.
Step 13:, the point that satisfies exclusion condition is got rid of according to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain;
The setting purpose of second control parameters is the individual point of disturbing splicing seams to merge is rejected.
Step 14: the point that satisfies exclusion condition according to said splicing seams edge coordinate and eliminating obtains splicing seams refinement positioning result and pursues frame merging.
The foregoing description refinement the size of splicing seams, and point is got rid of can to carry out that object blocks etc., reaches the technique effect of splicing seams accurate positioning property raising.
Fig. 2 a shows another method of seam-line elimination based on ultrahigh resolution digital jointing wall, comprising:
Step 21: splicing seams is carried out coarse positioning;
Step 22: from said splicing seams, extract the splicing seams gradient map;
Said splicing seams gradient map comprises two kinds of horizontal direction and vertical direction.
Step 23: said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
For the convenience of parameter comparison, and speed process rate, can splicing seams be divided according to some pixels (like 10 pixels), said splicing seams is made up of multiple lines and multiple rows unit's section.
Step 24: carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively, wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate, shown in Fig. 2 b; The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
The pixel value in horizontal splicing seams zone is lower than the peripheral region pixel, and this kind phenomenon shows comparatively outstandingly in gradient map, thereby utilizes gradient map to judge.From Fig. 2 b (horizontal projection curve) figure, can see; A negative pixel minimal value is arranged, and a positive pixel maximum value, that this pixel extreme value is corresponding is the upper edge a and the lower edge b of splicing seams; See from the coordinate angle; <b as long as find such extreme value, has also just found the edge of splicing seams to a.
Step 25: the each point that will orientate as in the splicing seams is compared according to first control parameters each other, and confirms splicing seams edge coordinate according to the extreme value that comparison obtains;
Behind the secondary coarse positioning of in above-mentioned steps, accomplishing, also possibly there is deviation in the splicing seams that finds, and is often still wide than the splicing seams of reality, needs further checking.
In horizontal splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to go according to brightness value, confirm splicing seams edge ordinate according to the maximum brightness value that comparison obtains;
If (x a) is the coboundary point of horizontal splicing seams to Img, must satisfy Img (xa) < Img (x so; A-1), just the brightness value of the capable a of splicing seams x row is less than the brightness value of the capable respective pixel of its lastrow x-1, is lower than screen intensity according to the brightness of splicing seams each point in splicing seams unit's section is verified; If do not satisfy this condition; Then seek the splicing seams point that satisfies condition downwards, suppose Img (x, a+da) < Img (x; A+da-1) satisfy condition, then corresponding coboundary ordinate is a+da; Adopt for lower limb and to use the same method, become from the bottom to top, obtain each point in the b-db traversal splicing seams section but seek direction; The maximal value damax of record da; And the minimum value dbmin of db, then the ordinate at the corresponding splicing seams edge of confirming is a+damax, b-dbmin.
In vertical splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to be listed as according to brightness value, confirm splicing seams edge horizontal ordinate according to the maximum brightness value that comparison obtains.
Equally, for vertical splicing seams, establish Img (a y) is the left hand edge point of splicing seams, must satisfy so Img (a, y) Img (a-1, y), a wherein, a-1 presentation video horizontal ordinate, y presentation video ordinate.Each point in the splicing seams section verifies, if do not satisfy this condition, then seeks the splicing seams point that satisfies condition to the right, suppose Img (a+da, y) < (a+da-1's Img y) satisfies condition, and then the left hand edge horizontal ordinate of correspondence is a+da; Adopt for right hand edge and to use the same method; Become from right to left but seek direction, obtain each point in b-db (wherein da, db is a side-play amount) the traversal splicing seams section; The maximal value damax of record da; And the minimum value dbmin of db, then the horizontal ordinate at the corresponding splicing seams edge of confirming is a+damax, b-dbmin.
Step 26:, the point that satisfies exclusion condition is got rid of according to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain;
Step 27: the point that satisfies exclusion condition according to said splicing seams edge coordinate and eliminating obtains splicing seams refinement positioning result and pursues frame merging.
Fig. 3 shows another method of seam-line elimination based on ultrahigh resolution digital jointing wall, comprising:
Step 31: splicing seams is carried out coarse positioning;
Step 32: from said splicing seams, extract the splicing seams gradient map;
Step 33: said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
Step 34: carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively;
Wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate;
The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
Step 35: the each point that will orientate as in the splicing seams is compared according to first control parameters each other, and confirms splicing seams edge coordinate according to the extreme value that comparison obtains;
In horizontal splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to go according to brightness value, confirm splicing seams edge ordinate according to the maximum brightness value that comparison obtains;
In vertical splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to be listed as according to brightness value, confirm splicing seams edge horizontal ordinate according to the maximum brightness value that comparison obtains.
Step 36:, the point that satisfies exclusion condition is got rid of according to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain;
When the fiducial value that the difference and the presetted pixel value of said horizontal projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
When the fiducial value that the difference and the presetted pixel value of said vertical projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value.
In actual application, the characteristics and the splicing seams of dark objects such as leaf, crocodile skin, eyes, eyebrow are quite similar, thereby the location of splicing seams is produced unnecessary interference; And because the width of splicing seams is limited; Usually can be, and the width of dark objects such as leaf, crocodile skin, eyes, eyebrow is usually greater than 6 pixels greater than the individual pixel of Wmax (present case Wmax=6), thus with b+dbmax-(a+damax) whether greater than Wmax; If greater than would cast out, otherwise keep.
And:
Detecting on splicing seams unit's section of dividing in advance on the horizontal projection curve, as possessing upper edge extreme point coordinate, abandoning handling the each point on this splicing seams unit's section of dividing in advance greater than lower edge extreme point coordinate;
Detecting on the vertical projection curve on splicing seams unit's section of dividing in advance, as possess left margin extreme point coordinate greater than the right along the extreme point coordinate, abandon handling the each point on this splicing seams unit's section of dividing in advance.
Generally, block if exist, then <b, perhaps <b+dbmax often can not satisfy a+damax a.If a>point of b, then this splicing seams unit's section is not handled directly and cast out.If a+damax>b+dbmax, <b+db then only handles the point that satisfies condition but certain point is satisfied a+da.
Step 37: judge the colour-difference of splicing seams both sides,, then abandon handling this point on this splicing seams unit's section of dividing in advance if the colour-difference of certain some both sides is greater than given threshold value in the splicing seams.
Because the color on splicing seams both sides often differs greatly, if the colour-difference on splicing seams both sides greater than given threshold value t (like t=120), then exists partly block, thereby abandon handling; Otherwise keep.
Step 38: the point that satisfies exclusion condition according to said splicing seams edge coordinate and eliminating obtains splicing seams refinement positioning result and pursues frame merging.
Fig. 4 shows a kind of splicing seams cancellation element based on ultrahigh resolution digital jointing wall, comprising:
Splicing seams edge coordinate and splicing seams width are confirmed unit 42, are used for the each point of orientating splicing seams as is compared according to first control parameters each other, and confirm splicing seams edge coordinate and splicing seams width according to the extreme value that comparison obtains;
Point rejected unit 43 is used for the fiducial value that said splicing seams width and second control parameters relatively obtain is satisfied the some eliminating of exclusion condition;
The point rejected unit, the concrete realization:
When the fiducial value that the difference and the presetted pixel value of said horizontal projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
When the fiducial value that the difference and the presetted pixel value of said vertical projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value.
And:
Detecting on splicing seams unit's section of dividing in advance on the horizontal projection curve, as possessing upper edge extreme point coordinate, abandoning handling the each point on this splicing seams unit's section of dividing in advance greater than lower edge extreme point coordinate;
Detecting on the vertical projection curve on splicing seams unit's section of dividing in advance, as possess left margin extreme point coordinate greater than the right along the extreme point coordinate, abandon handling the each point on this splicing seams unit's section of dividing in advance.
Another splicing seams cancellation element based on ultrahigh resolution digital jointing wall has been shown among Fig. 5, on the basis of Fig. 4, has also comprised: secondary coarse positioning unit 51, the concrete realization:
From said splicing seams, extract the splicing seams gradient map;
Said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
Carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively, wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate;
The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part is partly explained referring to method and is got final product.
In sum:
In the embodiment of the invention; Through to carrying out the splicing seams of coarse positioning, confirm splicing seams edge coordinate through the each point in the splicing seams according to the first control parameters comparison result, realized reducing of splicing seams size; The fiducial value that relatively obtains according to said splicing seams edge coordinate and second control parameters; The point of getting rid of non-splicing seams has just been got rid of the interference that object blocks etc., thereby reaches the technique effect of splicing seams accurate positioning property raising.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the embodiment of the invention or scope in other embodiments among this paper.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the method for seam-line elimination based on ultrahigh resolution digital jointing wall is characterized in that, comprising:
Splicing seams is carried out coarse positioning;
The each point of orientating as in the splicing seams is compared according to first control parameters each other, and confirm splicing seams edge coordinate according to the extreme value that comparison obtains;
According to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain, the point that satisfies exclusion condition is got rid of;
The point that satisfies exclusion condition according to said splicing seams edge coordinate and eliminating obtains splicing seams refinement positioning result and pursues frame merging.
2. method of seam-line elimination as claimed in claim 1 is characterized in that, also comprises:
From said splicing seams, extract the splicing seams gradient map;
Said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
Carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively, wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate;
The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
3. method of seam-line elimination as claimed in claim 1 is characterized in that, splicing seams is positioned be specially:
Splicing seams is carried out the location based on the additional testing frame method.
4. method of seam-line elimination as claimed in claim 1 is characterized in that, the each point of orientating as in the splicing seams is compared each other and is specially according to first control parameters:
In horizontal splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to go according to brightness value, confirm splicing seams edge ordinate according to the maximum brightness value that comparison obtains;
In vertical splicing seams direction, carry out comparison with orientating as respectively to press in the splicing seams to be listed as according to brightness value, confirm splicing seams edge horizontal ordinate according to the maximum brightness value that comparison obtains.
5. method of seam-line elimination as claimed in claim 2 is characterized in that, according to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain, the point that satisfies exclusion condition is got rid of, and is specially:
When the fiducial value that the difference and the presetted pixel value of said horizontal projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
When the fiducial value that the difference and the presetted pixel value of said vertical projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value.
6. method of seam-line elimination as claimed in claim 2 is characterized in that, according to the fiducial value that said splicing seams edge coordinate and second control parameters relatively obtain, the point that satisfies exclusion condition is got rid of, and is specially:
Detecting on splicing seams unit's section of dividing in advance on the horizontal projection curve, as possessing upper edge extreme point coordinate, abandoning handling the each point on this splicing seams unit's section of dividing in advance greater than lower edge extreme point coordinate;
Detecting on the vertical projection curve on splicing seams unit's section of dividing in advance, as possess left margin extreme point coordinate greater than the right along the extreme point coordinate, abandon handling the each point on this splicing seams unit's section of dividing in advance.
7. method of seam-line elimination as claimed in claim 2 is characterized in that, also comprises:
Judge the colour-difference of splicing seams both sides,, then abandon handling this point on this splicing seams unit's section of dividing in advance if the colour-difference of certain some both sides is greater than given threshold value in the splicing seams.
8. the splicing seams cancellation element based on ultrahigh resolution digital jointing wall is characterized in that, comprising:
The coarse positioning unit is used for splicing seams is carried out coarse positioning;
Splicing seams edge coordinate and splicing seams width are confirmed the unit, are used for the each point of orientating splicing seams as is compared according to first control parameters each other, and confirm splicing seams edge coordinate and splicing seams width according to the extreme value that comparison obtains;
The point rejected unit is used for the fiducial value that said splicing seams width and second control parameters relatively obtain is satisfied the some eliminating of exclusion condition;
Integrated unit is used for according to said splicing seams edge coordinate and gets rid of the point that satisfies exclusion condition obtaining splicing seams refinement positioning result and pursue frame merging.
9. cancellation element as claimed in claim 8 is characterized in that, also comprises:
Secondary coarse positioning unit, the concrete realization:
From said splicing seams, extract the splicing seams gradient map;
Said splicing seams gradient map will be projected to horizontal direction and vertical direction respectively according to splicing seams unit's section of preparatory division, obtain horizontal projection curve related and vertical projection curve with pixel characteristic;
Carry out secondary coarse positioning splicing seams with the extreme point on horizontal projection curve and the vertical projection curve respectively, wherein the upper edge extreme point coordinate of horizontal projection curve is less than lower edge extreme point coordinate;
The left margin extreme point coordinate of vertical projection curve is less than lower edge extreme point coordinate.
10. cancellation element as claimed in claim 8 is characterized in that, the some rejected unit, and concrete the realization:
When the fiducial value that the difference and the presetted pixel value of said horizontal projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
When the fiducial value that the difference and the presetted pixel value of said vertical projection curve extreme point coordinate relatively obtains is got rid of greater than the point of presetted pixel value;
And:
Detecting on splicing seams unit's section of dividing in advance on the horizontal projection curve, as possessing upper edge extreme point coordinate, abandoning handling the each point on this splicing seams unit's section of dividing in advance greater than lower edge extreme point coordinate;
Detecting on the vertical projection curve on splicing seams unit's section of dividing in advance, as possess left margin extreme point coordinate greater than the right along the extreme point coordinate, abandon handling the each point on this splicing seams unit's section of dividing in advance.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108898959A (en) * | 2018-07-27 | 2018-11-27 | 深圳市华星光电技术有限公司 | Spliced display device and its display methods |
| CN110910776A (en) * | 2019-12-17 | 2020-03-24 | 威创集团股份有限公司 | Method and device for processing splicing seams of spliced display screen |
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| CN108898959A (en) * | 2018-07-27 | 2018-11-27 | 深圳市华星光电技术有限公司 | Spliced display device and its display methods |
| CN110910776A (en) * | 2019-12-17 | 2020-03-24 | 威创集团股份有限公司 | Method and device for processing splicing seams of spliced display screen |
| CN110910776B (en) * | 2019-12-17 | 2021-06-08 | 威创集团股份有限公司 | Method and device for processing splicing seams of spliced display screen |
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