CN1774034A - Video image processing method aimed at eliminating plasma display wide area blinking - Google Patents
Video image processing method aimed at eliminating plasma display wide area blinking Download PDFInfo
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- CN1774034A CN1774034A CN 200410067992 CN200410067992A CN1774034A CN 1774034 A CN1774034 A CN 1774034A CN 200410067992 CN200410067992 CN 200410067992 CN 200410067992 A CN200410067992 A CN 200410067992A CN 1774034 A CN1774034 A CN 1774034A
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Abstract
An video processing method for eliminating wide area flicker on plasma display includes storing N - 1 frame data in frame internal memory, separating out main object image data ( MOID ) and background image data ( BID ) from each of stored N - 1 frame data and currently inputting N frame data, generating MOID of insertion frame by utilizing MOID of said N - 1 frame data and said N frame data, generating BID of insertion frame by utilizing said N - 1 frame data and said N frame data, generating insertion frame by combining insertion frame MOID and insertion frame BID to be an utilized body.
Description
[technical field]
The present invention is the method for the video image processing of relevant film flicker phenomenon that takes place when being intended to improve plasma display and driving with 50Hz or gray scale performance, in more detail, be the dynamic virtual contour (Dynamic false contour) that produces when improving plasma display and drive and the method for wide area blinking and gray scale expressive ability with 50Hz, two main frames are divided into 3 frames, have eliminated wide area blinking or dynamic virtual contour.
[background technology]
In general, the type of drive of plasma display is used ADS (Address-Display-Separated) subregion type of drive.This type of drive exerts an influence for the image quality that shows according to order and the proportion and the quantity of subregion.When utilizing this type of drive, three problems of appearance are the flicker of moving disorder (Motion artifacts) and relative broad range and the influence that visual gray scale number causes.
The reason of obstacle of being moved has two kinds.One of them is for gray scale performance, because of the dynamic virtual contour that the nonlinear way of temporary transient use causes, another one be because of plasma display pixel fluorescent lifetime than the longer mobile fuzzy that produces of entire frame time.The relation of dynamic virtual contour and gray scale (number of partitions) or the relation of flicker and mobile fuzzy have complementary functional relation.
Such as, in order to reduce flicker, if improve the frequency of frame, mobile fuzzy just appears; In order to reduce mobile fuzzy, if reduce the frequency of frame, serious scintillation just appears.
Certainly, this problem occurs too at other display that is not plasma display, but for the mode that solves such problem also according to the characteristics of display separately, have bigger gap.
Fig. 1 represents to reconstitute an embodiment-partitioned method of prior art.
The foregoing description is represented, the frame of 20ms is divided into the frame of two 10ms, and rearranges subregion, the 100Hz type of drive of the PHILIPS Co. that drives.
The type of drive of the 100Hz plasma display of prior art-PHILIPS Co. is problem and the subregion that rearranges in the dynamic virtual contour that produces when 50Hz ADS type of drive is applicable to plasma display, wide area blinking, the gray scale performance, and the 50Hz frame rate changed into 100Hz, improve.
Fig. 2 represents, embodiment-two frame of prior art is divided into the method for three frames.
The foregoing description is the conventional method that is suitable for when two frames are divided into three frames, is made as the insertion frame with the average frame of two frames, two frame transforms mode that is three frames.
If but carried out conversion like this, the blurred picture of dividing two frames equally just would be inserted between two frames, therefore, makes image quality low.In addition, when inserting frame and pass to before this frame simply once more (every 5 frames, give when frame passes one time once more before this: 50Hz → 60Hz up conversion, every 2 frames, give when frame passes one time once more before this: 50Hz → 75Hz up conversion), when moving image shows, there is the cut not too naturally sensation of object that moves.
[summary of the invention]
The present invention proposes in order to solve above-mentioned prior art problem, and its purpose is, in order to eliminate wide area blinking, utilizes two frames, forms and inserts frame, and according to above-mentioned insertion frame, with the 75Hz driving display, provide the method for eliminating wide area blinking with this.
Other purpose of the present invention is that when forming the insertion frame with two frames, object moves the object-detection algorithm of degree between two frames of image use consideration, provides one to produce new insertion frame method.
To achieve these goals, the step that comprises the steps: a) N-1 frame data to be stored in the frame internal memory for the method for video image processing of eliminating plasma display wide area blinking of the present invention, b) from N-1 the frame data and present N the frame data of importing of above-mentioned storage, separate separately main object image data and the step of background image data, c) utilize the main object image data of above-mentioned N-1 frame data and the main object image data of above-mentioned N frame data, produce the step of the object image data of inserting frame, d) utilize the background image data of above-mentioned N-1 frame data and the background image data of above-mentioned N frame data, produce the step of the background image data that inserts frame, e) main object image data of above-mentioned insertion frame and insertion frame background image data are integrated, produce the step of inserting frame.
At above-mentioned e) after the step, the present invention also should comprise the step that shows N-1 frame and show the step of inserting frame and show that the step of N frame is comparatively reasonable.
The N of the present invention from 1 to 50 in selection even number or the odd number one is comparatively reasonable.
In the present invention, the frequency that drives frame is that 75Hz is comparatively reasonable.
As mentioned above, according to the present invention, at plasma display or digital micro-mirror device (DigitalMicromirror Device) panel, when importing the 50Hz signal of Phase Alternate Line (PAL) or "systemme electronique couleur avec memoire" and so on, has the effect of the wide area blinking that can eliminate generation.
In addition, except plasma display, the present invention can also be applicable to the luminaire of all similar types of digital micro-mirror device and so on.
[description of drawings]
Fig. 1 represents to reconstitute the method for an embodiment-subregion (Subfield) of prior art.
Fig. 2 represents embodiment-two frame of prior art is divided into the method for three frames.
Fig. 3 roughly represents, behind detection one embodiment of the present of invention-object, produces the process of inserting frame.
Fig. 4 represents to be divided into the process of one embodiment of the present of invention-main object and background image.
Fig. 5 represents to produce the process of the object of one embodiment of the present of invention-insertion frame.
Fig. 6 is intended to eliminate the integration map of method of video image processing of the wide area blinking of one embodiment of the present of invention-plasma display.
Fig. 7 is intended to eliminate the flow chart of method of video image processing of the wide area blinking of one embodiment of the present of invention-plasma display.
[embodiment]
Below, with reference to the accompanying drawings, be described in more detail content of the present invention.
Fig. 3 roughly represents, behind detection one embodiment of the present of invention-object, makes the process of inserting frame, is to have represented because of producing the process of insertion frame reconstituting of image.
With reference to Fig. 3, detect main object 304,305 from N-1 frame 301 and N 302 of frame, and extract it.Utilize the main object images of said extracted, reconstitute the main object images of inserting frame.
Afterwards, utilize the background image except main object on N-1 frame 301 and N the frame 302, produce the background image that inserts frame.
Utilize the object images and the background image of the insertion frame of above-mentioned generation, produce and insert frame 303.That is, be the insertion frame of 75Hz in order to make the 50Hz up conversion, not as before this, simply in conjunction with two data, insert blurred picture, but, produce new image according to the recombinant of said extracted data.So the new frame that inserts above-mentioned generation is an example, not only can show soft moving, also can realize image quality improving.
Fig. 4 is as one embodiment of the present of invention, and expression is divided into frame data the process of main object and background image; Fig. 5 represents, produces the object of one embodiment of the present of invention-insertion frame.With reference to Fig. 4 and Fig. 5, Shu Ru frame 301 is separated into main object images 301a and background image 301b at first respectively.N-1 object images 301a and N object images 302a of above-mentioned separation reconstitute, and produce the object images 303a that inserts frame.To the production method of the object images 303a of above-mentioned insertion frame be described below.The background image 301b that inserts frame divides the background image data of the background image data of N-1 frame and N frame equally and produces.
Fig. 6 is the integration map for the method for video image processing of the wide area blinking of eliminating one embodiment of the present of invention-plasma display; Fig. 7 is the flow chart for the method for video image processing of the wide area blinking of eliminating one embodiment of the present of invention-plasma display.
With reference to Fig. 6 and Fig. 7, it is as follows that explanation is produced the process of inserting frame.
In step 701, N-1 frame data of input are stored in frame internal memory 601.
In step 702, import N-1 frame data and N frame data, to the main object image data operation testing process of above-mentioned N-1 frame data and N frame data; In step 703, to the main object image data and the background image data operation leaching process of above-mentioned detection.As the said extracted method, use image detecting method-inclination watershed algorithm or the region growing image processing algorithm known altogether comparatively reasonable.If utilize above-mentioned algorithm to detect and extract object images, just separate main object image data and background image data with N frame data from N-1 frame data from separately frame.
In step 704, produce the main object images of inserting frame.The main object image data of N-1 the frame that above-mentioned steps 703 is separated and the main object image data of N frame are integrated in the following method.
Relatively the main object image data of N frame and the main object image data of N-1 frame in the main object image data of frame, are used common value, to there being the value of gap, use the median of the main object image data of two frames.
The above-mentioned data that reconstitute produce as the main object images of above-mentioned insertion frame shown in Figure 5.
In step 705, produce the background image that inserts frame.The background image that inserts frame produces different with the main object images production method of the insertion frame of above-mentioned steps 704.That is, the background image data that inserts frame is the mean value that utilizes the background image data of N-1 frame background image data of above-mentioned input and N frame, the background image of generation insertion frame.Little because of the amplitude that the background image data of two frames changes, add the value of two frame image datas after, use or also can use the blurred picture that adds two frames divided by 2.
In step 706, produce and insert frame.The main object image data of the insertion frame that synthetic above-mentioned steps 704 produces and the insertion frame background image data that step 705 produces produce and insert frame.That is be an insertion two field picture, in conjunction with inserting the frame object image and insert the frame background image, finishing.
To 709 steps as display frame, is that insertion frame that said process produces is inserted in the process between N-1 frame and N the frame from step 707.
For one embodiment of the present of invention-75Hz up conversion, above-mentioned N also can select from odd number.That is, the 1st frame and the 2nd frame produce one and insert frame, and the 3rd frame and the 4th frame produce one and insert frame.This process is carried out repeatedly, the generation of the insertion frame between the 49th frame to the last and the 50th frame.The insertion frame sum of above-mentioned generation is 25.So total frame number can have 75 frames.
Above-mentioned N value is not to be confined to odd number.Also can be limited to even number, produce insertion frame separately.
Above-mentioned 75Hz up conversion is an example.According to the purpose of invention, can carry out the up conversion of being ready.That is, can totalframes volume production as requested give birth to the insertion frame.
In general, when W-VGA drives plasma display, a frame is used 12 subregions, therefore, two frames are used 24 subregions.If this is divided into three frames, can use the 8-8-8/8-7-9/9-6-9 mode of SW8-SW8-SW8/SW8-SW7-SW9/SW9-SW6-SW9 mode or combination S WSE to drive.
Such as, if drive with the 8-8-8SF structure, after just the mode that proposes with the present invention constitutes the insertion frame, 8 subregions of middle use, and represent images gets final product.
By above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.
Therefore, the technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to interest field.
Claims (4)
1, for eliminating the method for video image processing of plasma display wide area blinking, comprising:
A) N-1 frame data are stored in the step of frame internal memory;
B) from N frame data of N-1 frame data of above-mentioned storage and input now, separation separately main object image data and the step of background image data;
C) utilize the main object image data of above-mentioned N-1 frame data and the main object image data of above-mentioned N frame data, produce the step of the object image data of inserting frame;
D) utilize the background image data of above-mentioned N-1 frame data and the background image data of above-mentioned N frame data, produce the step of the background image data that inserts frame;
E) main object image data of above-mentioned insertion frame and insertion frame background image data are integrated, produce the step of inserting frame.
2, as claim item 1 described method of video image processing, it is characterized in that for the elimination plasma display wide area blinking,
In the described method:
E) after the step, also comprise the step that shows N-1 frame and show the step of inserting frame and the step that shows N frame.
3, as claim item 1 or 2 described method of video image processing, it is characterized in that for the elimination plasma display wide area blinking,
N selects in odd number or the even number one from 1 to 50.
4, as claim item 3 described method of video image processing, it is characterized in that for the elimination plasma display wide area blinking,
The frequency that drives frame is 75Hz.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420270C (en) * | 2006-06-13 | 2008-09-17 | 北京中星微电子有限公司 | Method for eliminating flicker noise between frames in image sequence |
| CN100420271C (en) * | 2006-06-13 | 2008-09-17 | 北京中星微电子有限公司 | Device for eliminating flicker noise between frames in image sequence |
| CN101651773B (en) * | 2009-09-14 | 2011-01-05 | 中国电影科学技术研究所 | Image flicker removing method |
| CN106328056A (en) * | 2015-06-30 | 2017-01-11 | 乐金显示有限公司 | Organic light emitting display and driving method thereof |
-
2004
- 2004-11-10 CN CN 200410067992 patent/CN1774034A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420270C (en) * | 2006-06-13 | 2008-09-17 | 北京中星微电子有限公司 | Method for eliminating flicker noise between frames in image sequence |
| CN100420271C (en) * | 2006-06-13 | 2008-09-17 | 北京中星微电子有限公司 | Device for eliminating flicker noise between frames in image sequence |
| CN101651773B (en) * | 2009-09-14 | 2011-01-05 | 中国电影科学技术研究所 | Image flicker removing method |
| CN106328056A (en) * | 2015-06-30 | 2017-01-11 | 乐金显示有限公司 | Organic light emitting display and driving method thereof |
| CN106328056B (en) * | 2015-06-30 | 2018-11-13 | 乐金显示有限公司 | Organic light emitting display and its driving method |
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