CN1971681A - Method for reducing sparkling sub-field alignment when eliminating dynamic false contour - Google Patents
Method for reducing sparkling sub-field alignment when eliminating dynamic false contour Download PDFInfo
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Abstract
The invention relates to an alignment method for reducing the flaring subfield which is generated when eliminating dynamic fake contour, based on the adjacent odd-even two frames subfield weight adopting reverse order, the end with upmost weight of the odd or even frame is set a lower subfield, and the end of subfield with lower weight is placed on the relative end of subfield with weight 1. In the invention by setting the subfield with lower weight, there is a reasonable transition between the relative ends of the up and down frames, and it can reduce the serious scintillation brought by displaying the gradations of grey.
Description
Technical field
The present invention relates to a kind ofly adopt sub-displaying mode to realize that on flat-panel monitor many grades of image gray scale show to improve the method for display quality particularly a kind of be reduced in when eliminating dynamic false contours and a son aligning method of the serious scintillation of generation on some gray shade scale shows that causes.
Background technology
Some flat-panel monitor, for example: plasma display (PDP) etc., for the multi-grayscale of realizing image shows, usually a two field picture being divided into a plurality of sons field shows, the brightness with different weights of different sons is made up many grades gray scale that can realize image by the son field of different weights and is shown.
For example AC plasma display is 256 grades of gray scales of realization, and (sub: English is subfield, writes a Chinese character in simplified form and is SF usually 1 two field picture to be divided into 8 son fields.SF1 represents the 1st son field, and the rest may be inferred by analogy), the weight relationship of sub-field brightness is: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8=1: 2: 4: 8: 16: 32: 64: 128.256 gray shade scales that can obtain between 0～255 by the various combination to these 8 son fields show.Such as: during representing gradation grade 0, SF1～SF8 is all not luminous; During representing gradation grade 127, SF1～SF7 is all luminous, and SF8 is not luminous; During representing gradation grade 128, SF1～SF7 is all not luminous, and SF8 is luminous; When representing gradation grade 255, SF1～SF8 all luminous.
Yet, when adopting above-mentioned sub-field type to realize the demonstration of many grades of image gray scale, dynamic false contours (Dynamic False Contour) phenomenon can appear, promptly when showing the black and white moving image, can produce the gray scale disorder; When the display color moving image, also can produce the color disorder.The generation of dynamic false contours is the vision physiological feature of human eye and the result who adopts sub-displaying mode combined action.
This phenomenon can illustrate with the rest image that shows with sub-field type shown in Figure 1, when this rest image moves right, order as the fruit field is SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8=1: 2: 4: 8: 16: 32: 64: 128 o'clock, human eye can be observed between gray level 127 and gray level 128 and present tangible bright line, and its gray level is corresponding to 127+128=255; And be SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8=128: 64: 32: 16: 8: 4: 2: 1 o'clock as the order of fruit field, human eye can be observed between gray level 127 and gray level 128 and present tangible concealed wire, its gray level is corresponding to 0+0=0, as shown in Figure 2.The dynamic false contour that produces during for the demonstration of many grades of removal of images gray scale, application number be disclosed in the patented claim of 200410073011.9 by name " a kind of method that reduces dynamic false contours in the AC plasma display plate " a kind of by take an opposite son weight order at consecutive frame, make the dynamic false contour effect of generation average mutually, can obtain (255+0)/2=127.5 in this example, thereby making human eye perceives is the gray level 127.5 of nature transition to what present between gray level 127 and gray level 128, and then the dynamic false contours that produces during the demonstration of many grades of removal of images gray scale now looks like.
Although an adjacent frame weight takes the compensation method of opposite order can reduce dynamic false contours, but the design of this seed field sequence causes some gray shade scale excessive at interval on the demonstration time, brought the serious flickering on some gray shade scale shows, reach 2 times frame period at interval such as the demonstration of gray level 1, well below the 50Hz threshold frequency of human eye to glimmering and discovering.Thereby the serious scintillation that need provide a kind of some gray shade scale that the compensation method reduction dynamic false contours of taking reverse order by an adjacent frame weight is caused to show is improved one's methods.
Summary of the invention
Therefore, the objective of the invention is to by providing a kind of being reduced in to produce a son aligning method of flicker when eliminating dynamic false contours, this method is taked the compensation method of reverse order to eliminating an adjacent frame weight, reaches the effect of the serious scintillation that produces on some gray shade scale shows that reduces dynamic false contours and cause.
The object of the present invention is to provide a kind of son aligning method that produces flicker when eliminating dynamic false contours that is reduced in, the son of this a method odd-numbered frame or even frame the highest end of weight is provided with a son field that weight is relatively low, each gray level of balance is showing temporal interval, thereby prevents flicker.
For achieving the above object, the technical solution used in the present invention is:
A kind of son aligning method that produces flicker when eliminating dynamic false contours that is reduced in, on the basis of adjacent odd even two a frames weight being taked reverse order arrange, at the highest end of son weight of odd-numbered frame or even frame the relatively low son of weight is set, and to place with this frame weight be 1 the son relative other end in the son field that this weight is relatively low.
The described son aligning method that produces flicker when eliminating dynamic false contours that is reduced in, its relatively low son is to split out the relatively low son of weight in the highest maybe that this weight is the highest son field of an end increase of weight of the Zi Chang end of every frame.
Described being reduced in produces a son aligning method that glimmers when eliminating dynamic false contours, when it increased relatively low son field, the weight of this child field was less than 8; When tearing molecular field open, be that the highest of original weight is split, the weight of the highest son of this weight is the son of N (N＞1), be split into weight and be 1 and weight be 2 sons of N-1.
More particularly, best mode is that sub the relatively low weight of weight that institute increases or splits out is set to 1.
The described son aligning method that produces flicker when eliminating dynamic false contours that is reduced in, its specific implementation is: at the front end of the son of odd-numbered frame or even frame with terminal a weight is set is 1 son, wherein, front end and terminal son field are by increase or split the generation of the highest son of weight.
Above-mentioned being reduced in produces a son aligning method that glimmers when eliminating dynamic false contours, the weight of the son field that the weight that it increased or split out is lower is set to 1, thereby a son Discharge illuminating time interval that is implemented in any gray scale of any adjacent two frames is not more than the cycle of a frame, realizes that flicker free shows.
Than prior art, the present invention be by any adjacent odd even two frames weight is taked reverse order arrange sub-field type eliminate false contouring the basis on, setting by the relatively low son field of weight, between the son field of the corresponding end of frame a rational transition is arranged about being, effectively reduced the serious scintillation that some gray shade scale of bringing thus shows.
Description of drawings
Fig. 1 is as the human eye of the example observing effect synoptic diagram to rest image,
Fig. 2 is the mechanism of production of dynamic false contours and reduces the schematic diagram of dynamic false contours with adjacent frame compensation process,
Fig. 3 is that the son of basic adjacent frame compensation process is arranged synoptic diagram,
Fig. 4 is a son arrangement synoptic diagram of the improved adjacent frame compensation process of the present invention,
Fig. 5 is the gray level expressing method synoptic diagram of the improved adjacent frame compensation process of the present invention,
Fig. 6 is a son arrangement synoptic diagram of the adjacent frame compensation process of the improved another kind of the present invention,
Fig. 7 is a son arrangement synoptic diagram of improved another the adjacent frame compensation process of the present invention.
Embodiment
Describe enforcement of the present invention in detail below in conjunction with accompanying drawing.This enforcement all adopts 256 grades of gray scales to be shown as example explanation.
At first arrange with the method for adjacent frame compensation the bundle field, and when showing such as 256 grades of gray scales, the first frame field sequence is SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8=1: 2: 4: 8: 16: 32: 64: 128; The second frame field sequence is just the opposite, i.e. SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF=128: 64: 32: 16: 8: 4: 2: 1, as shown in Figure 3.
Increase by 1 extra son then, its luminance weights is 1, and to make it be arranged in a son sequence and original weight be 1 the son relative other end.Also can by be original certain weight the son field of N (N＞1) split into weight be 1 and weight be 2 sons of N-1, and be that also to place a son sequence and original weight be 1 the son relative other end for 1 son field with the weight of this new generation.
Below in conjunction with accompanying drawing the present invention is described in further detail.
As Fig. 4, this example be on the sub-field method of Fig. 3 be with weight 128 son field split into weight be 127 and weight be two sons of 1.In these two new sons, weight is that still to be positioned at original weight be 128 Zi Chang position 127 son field, and weight is that 1 son then is arranged in and its position adjacent.This has just constituted the arrangement mode of 9 new son fields.The present invention is when showing first frame, the arrangement mode of son field is set at: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF9=1: 2: 4: 8: 16: 32: 64: 127: 1, when showing second frame, its son arrangement mode is adjusted into: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF9=1: 127: 64: 32: 16: 8: 4: 2: 1, two frames that come to this are then alternately realized the demonstration of 256 grades of gray scales (image).
As Fig. 5, prevent the purpose of glimmering by choosing son the method for expressing of gray level dexterously, reaching.With the example that is shown as of gray level 1, it is luminous all to select weight to be that 1 the 1st son comes in odd-numbered frame and even frame, so be 1 frame period twice luminous interval time, satisfies the eye storage characteristic of human eye, can not feel flicker.
The book field method is exactly to be 1 Xin Zichang by 1 weight that increases, can both guarantee when making sub-field sequence positive and negative alternate under the situation of adjacent frame compensation that 1 weight is 1 a son as the 1st son, on the method for expressing of each gray level (except the gray level 0), all take this 1st son then, thereby guaranteed to prevent the maximum luminous interval of glimmering.
As Fig. 6, this example is that to adopt weight with even frame be that to increase a weight before 128 the son be 1 son, weight is that still to be positioned at original weight be 128 Zi Chang position 128 son field, and weight is that 1 son then is arranged in and its position adjacent, is first son.This has just constituted the arrangement mode of 9 new son fields.Equally, the weight of the odd-numbered frame afterbody that it is following be 128 the son after, also increase a weight and be 1 son, the son field of even frame and odd-numbered frame is corresponding one by one, when first frame is even frame, the arrangement mode of son field is set at: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF9=1: 128: 64: 32: 16: 8: 4: 2: 1, second frame is an odd-numbered frame, the arrangement mode of its son field then is: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF9=1: 2: 4: 8: 16: 32: 64: 128: 1, two frames that come to this are then alternately realized the demonstration of 256 grades of gray scales (image).
Fig. 7 shows is odd-numbered frame and even frame when alternately arranging, and increases the situation of a weight greater than 1 son, and the weight of a son that is wherein increased is 2, and this example is that the weight with odd-numbered frame is that to increase a weight be 2 son field for a son back of 128.Weight is that still to be positioned at original weight be 128 Zi Chang position 128 son field, and weight is that 2 son then is arranged in and its position adjacent, and promptly in the caudal end of odd-numbered frame, this has just constituted the arrangement mode of 9 new sons; First son the former weight before this of the even frame below the odd-numbered frame is 128 a son, at this moment, increases a weight in the front portion of this child field and be 2 son, also forms the arrangement mode of a kind of 9 sons.The present invention is when showing first frame, the arrangement mode of son field is set at: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF9=1: 2: 4: 8: 16: 32: 64: 128: 2, when showing second frame, its son arrangement mode is adjusted into: SF1: SF2: SF3: SF4: SF5: SF6: SF7: SF8: SF9=2: 128: 64: 32: 16: 8: 4: 2: 1, two frames that come to this are then alternately realized the demonstration of 256 grades of gray scales (image).
Because the weight of even frame is the weight of 2 son and odd-numbered frame is 1 son, and the weight of son differs very little, is as broad as long in vision, and its visual effect and weight are that 1 sub-field effect is identical, also can eliminate the phenomenon of flicker.
In the above-described embodiment, it should be noted that, no matter be even frame, or odd-numbered frame, first of every frame field preferably weight is 1 son, and promptly when increasing or tearing molecular field open, what at first will focus on is first son of every frame, it is 1 son that this child field will be set to weight, and being set to weight as for the son field of every frame least significant end is that 1 son is not extremely important.
In addition, in the application and reasonable embodiment of reality, no matter be to increase son field or the situation of tearing molecular field open, sub of frame is need be one to one up and down, and promptly previous frame increases a son field, and the next frame of its close-up also will increase by one sub.
Foregoing; be embodiments of the present invention to have been done some specify; do not represent and enumerated all embodiments of the present invention, every technology contents, goal of the invention and technique effect are identical with the present invention or approximate, all should be within protection scope of the present invention.
Claims (5)
1, a kind of son aligning method that produces flicker when eliminating dynamic false contours that is reduced in, it is characterized in that on the basis of adjacent odd even two a frames weight being taked reverse order arrange, at the highest end of son weight of odd-numbered frame or even frame the relatively low son of weight is set, and to place with this frame weight be 1 the son relative other end in the son field that this weight is relatively low.
2, the son aligning method that produces flicker when eliminating dynamic false contours that is reduced in as claimed in claim 1, it is characterized in that relatively low son field, is to split out a sub-field that weight is relatively low in maybe that this weight is the highest son field of the highest end increase of a sub weight of every frame.
3, as claimed in claim 1 or 2 being reduced in produces a son aligning method that glimmers when eliminating dynamic false contours, and when it increased relatively low son field, the weight of this child field was less than 8; When tearing molecular field open, be that the highest of original weight is split, the weight of the highest son of this weight is the son of N (N＞1), be split into weight and be 1 and weight be 2 sons of N-1.
4, a son aligning method that is reduced in generation flicker when eliminating dynamic false contours as claimed in claim 3 is characterized in that the weight of the son field that this increases is 1.
5, the son aligning method that produces flicker when eliminating dynamic false contours that is reduced in as claimed in claim 1, it is characterized in that being provided with a relatively low son field of weight is meant at the front end of arbitrary frame and terminal a weight is set is 1 son, wherein, front end and terminal son field are by increase or split the generation of the highest son of weight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510101370 CN1971681B (en) | 2005-11-22 | 2005-11-22 | Method for reducing sparkling sub-field alignment when eliminating dynamic false contour |
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| CN 200510101370 CN1971681B (en) | 2005-11-22 | 2005-11-22 | Method for reducing sparkling sub-field alignment when eliminating dynamic false contour |
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| CN1971681A true CN1971681A (en) | 2007-05-30 |
| CN1971681B CN1971681B (en) | 2010-12-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021035809A1 (en) * | 2019-08-28 | 2021-03-04 | 深圳市华星光电半导体显示技术有限公司 | Driving method for display device |
| CN116665608A (en) * | 2023-04-19 | 2023-08-29 | 惠科股份有限公司 | Display brightness compensation method, display device and storage medium |
| WO2025161203A1 (en) * | 2024-01-31 | 2025-08-07 | 昀光微电子（上海）有限公司 | Data scanning method and apparatus, and electronic device, storage medium and program product |
| WO2025161207A1 (en) * | 2024-01-31 | 2025-08-07 | 昀光微电子（上海）有限公司 | Data scanning method and apparatus, electronic device, storage medium and program product |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2994633B2 (en) | 1997-12-10 | 1999-12-27 | 松下電器産業株式会社 | Pseudo-contour noise detection device and display device using the same |
| CN1141688C (en) * | 1999-08-12 | 2004-03-10 | 友达光电股份有限公司 | Plasma display driving device and method capable of removing dynamic error contour |
| KR100497235B1 (en) * | 2003-10-01 | 2005-06-23 | 삼성에스디아이 주식회사 | A driving apparatus of plasma panel and a method for displaying pictures on plasma display panel |
| CN1588514A (en) * | 2004-08-19 | 2005-03-02 | 彩虹彩色显像管总厂 | Method for reducing dynamic pseudo contour in AC plasma display plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021035809A1 (en) * | 2019-08-28 | 2021-03-04 | 深圳市华星光电半导体显示技术有限公司 | Driving method for display device |
| CN116665608A (en) * | 2023-04-19 | 2023-08-29 | 惠科股份有限公司 | Display brightness compensation method, display device and storage medium |
| WO2025161203A1 (en) * | 2024-01-31 | 2025-08-07 | 昀光微电子（上海）有限公司 | Data scanning method and apparatus, and electronic device, storage medium and program product |
| WO2025161207A1 (en) * | 2024-01-31 | 2025-08-07 | 昀光微电子（上海）有限公司 | Data scanning method and apparatus, electronic device, storage medium and program product |
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