WO2002027702A1 - Procede et dispositif de traitement d'image pour corriger des defauts de visualisation d'objets mobiles - Google Patents
Procede et dispositif de traitement d'image pour corriger des defauts de visualisation d'objets mobiles Download PDFInfo
- Publication number
- WO2002027702A1 WO2002027702A1 PCT/FR2001/002854 FR0102854W WO0227702A1 WO 2002027702 A1 WO2002027702 A1 WO 2002027702A1 FR 0102854 W FR0102854 W FR 0102854W WO 0227702 A1 WO0227702 A1 WO 0227702A1
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- WIPO (PCT)
- Prior art keywords
- image
- cell
- vector
- vectors
- gray level
- Prior art date
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
- G09G3/2033—Display of intermediate tones by time modulation using two or more time intervals using sub-frames with splitting one or more sub-frames corresponding to the most significant bits into two or more sub-frames
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0266—Reduction of sub-frame artefacts
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/10—Special adaptations of display systems for operation with variable images
- G09G2320/106—Determination of movement vectors or equivalent parameters within the image
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
- G09G3/293—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for address discharge
Definitions
- Image processing method and device for correcting visualization faults in moving objects are described.
- the invention relates to an image processing method and device for correcting visualization defects of moving objects. More particularly, the invention relates to corrections of defects produced by display devices using the temporal integration of image sub-scans to reproduce gray levels.
- the display devices concerned have an array of elementary cells which are either in an on state or in an off state.
- the display devices we are particularly interested in plasma display panels.
- PAP Plasma display panels
- PAPs generally include two insulating slabs (or substrate), each carrying one or more networks of electrodes and delimiting between them a space filled with gas. The slabs are assembled to each other so as to define intersections between the electrodes of said arrays. Each intersection of electrodes defines an elementary cell to which corresponds a gas space partially delimited by barriers and in which an electric discharge occurs when the cell is activated. The electric discharge causes an emission of UV rays in the elementary cell. Luminophores deposited on the cell walls transform UV rays into visible light.
- each cell can be in the on or off state. Maintaining in one of the states is done by sending a succession of so-called maintenance pulses during the entire period during which one wishes to maintain this state.
- the ignition, or addressing, of a cell is done by sending a larger pulse, commonly called addressing pulse.
- the extinction, or erasure, of a cell is done by cancellation of the charges inside the cell using a damped discharge.
- we use the phenomenon of integration of the eye by modulating the durations of the states on and off using sub-scans, or sub-frames, during the duration of display of an image.
- a first addressing mode called addressing during display (or Addressing While Displaying)
- a second addressing mode consists of addressing, maintaining and erasing all the cells of the panel during three distinct periods.
- a problem of false contours consists in the appearance of a darker or lighter or even colored line when moving the transition zone between two colors.
- the phenomenon of false contour being all the more perceptible when the transition is made between two very close colors that the eye associates with the same color.
- a problem of sharpness of outline also appears on moving objects.
- Figure 1 shows a time distribution for the display of two consecutive images with a moving transition.
- the total display time of the image is 16.6 or 20 ms depending on the country.
- eight sub-scans associated with durations of weight 1, 2, 4, 8, 16, 32, 64 and 128 are carried out in order to allow 256 gray levels per cell.
- Each sub-scan allows an elementary cell to be illuminated or not for an illumination duration equal to the weight 1, 2, 4, 8, 16, 32, 64 or 128 multiplied by an elementary duration.
- the lighting times are separated by erasing and addressing operations during which the cells are switched off.
- a transition on a color between a level 128 and a level 127 is represented for an image I and an image 1 + 1 with an offset of 5 pixels.
- the integration made by the eye amounts to integrating temporally along the oblique lines represented.
- the result of the integration results in the appearance of a gray level equal to zero at the time of the transition between levels 128 and 127 while the human eye does not distinguish between these two levels.
- a level 0 appears.
- the transition occurs from level 128 to level 127, there appears a level 255.
- a first solution consists in “breaking” the highweights to minimize the error.
- FIG. 2 represents the same transition as FIG. 1 using seven sub-weights of weight 32 in place of the three sub-weights of weights 32, 64 and 128. The integration error of the eye is then made on a maximum value equal to a level 32.
- Many other solutions have been developed by varying the weights of the sub-scans in order to minimize the error. However, whatever the solution chosen for the brightness distribution of the different sub-scans, there is always a display error due to the coding.
- D1 European application No. 0 978 817
- D1 motion vectors are calculated for all the pixels to be displayed in an image, then the sub-scans are moved along these vectors as a function of the different weights of the sub-scans.
- the correction thus obtained is represented in FIG. 3.
- the result of this correction gives an excellent result on the transitions which causes effects of false contours because generally the zones belonging to a transition subject to the false contour move according to the same motion vector.
- FIG. 4 illustrates a motion vector field obtained from prior art estimators.
- Each point of the current image (Image I) is associated with a motion vector indicating the direction of movement relative to the previous image (Image 1-1).
- Image 1 When a moving object moves in front of a background, part of the background appears while another part of the background disappears.
- the conflict zone 2 is characterized by the crossing of motion vector which imposes two values on a sub- given sweep for a given point.
- the hole area is characterized by a lack of information.
- the invention provides a method for compensating for movement of the false contour defect.
- a motion compensation is carried out by determining, for each underscan, the state of each cell by assigning to it the state which would correspond to an intermediate image compensated for motion situated at the instant of said underscan.
- the invention is a method of displaying a video image on a display device which comprises a plurality of cells in which the gray levels are obtained by temporal integration over a given period of a plurality of sub-scans for which each cell is either on or off. For each sub-scan, an intermediate image corresponding to the instant of said sub-scan is calculated, each intermediate image being compensated for in movement. Next, the state of each cell is determined for each sub-scan by assigning to it the value of the cell corresponding to the intermediate image associated with said sub-scan.
- an estimation of motion is carried out between the image to be displayed and the previous image, the motion vectors obtained by the motion estimation being grouped in fields of parallel vectors.
- the motion vector that is applied is determined, then the corresponding gray level is determined as a function of the image to be displayed and / or of the image which precedes the image. to display.
- a cell is subjected to a single parallel vector field, then the vector which is associated with it corresponds to the vector field and the gray level corresponds to the gray level of the image to be displayed on which the vector points. If a cell is subjected to at least two fields of parallel vectors, then the vectors parallel to all the fields passing through the cell are determined and the vector is associated with the cell for which the gray levels of the image to be displayed and of the previous image are the closest, the gray level associated with the cell corresponds to the gray level of the image to be displayed on which the associated vector points. If a cell is not subject to any vector field, then we calculate a resulting vector corresponding to a mean of the neighboring vectors and the gray level of the previous image corresponding to the resulting vector is associated with the cell.
- the motion vectors of the previous image are extended, and a vector parallel is assigned to the extended vector field of the previous image which surrounds the cell, the gray level associated with the cell corresponding to the gray level of the previous image through which the vector assigned to the cell passes.
- the invention also relates to a display device which implements the method defined above. More particularly, the device comprises a plasma panel.
- FIGS. 1 to 3 represent the temporal integration of gray levels made by the human eye on display devices operating in all or nothing mode
- FIG. 4 represents an example of vector fields provided by a motion estimator
- FIGS. 5 and 6 show extrapolations of motion vectors according to the invention
- FIG. 7 represents the succession of tasks carried out to transform a video image into a command for a display device operating all or nothing, according to the invention
- FIG. 8 represents a block diagram of an embodiment of the invention .
- Figure 4 shows motion vectors as provided by a motion estimator.
- the motion estimator used by the invention is of the same type as those used to perform image display frequency conversion with motion compensation.
- the motion estimators currently used give results close to those which a so-called perfect estimator should give.
- the motion vectors have a component along a horizontal axis and a component along a vertical axis of the image which corresponds to the displacement of the point between two images (or two frames depending on whether one works in interlaced or progressive mode). For representation reasons, the image is only represented on one dimension by a linear series of points along the horizontal axis, the vertical axis representing time.
- the motion estimator associates at each point a motion vector which points to the previous image according to known techniques. For the points corresponding to a background which appears, the estimators are capable of determining reliably the associated vectors, as a function of the neighboring vectors and of the textures of group of points of the current image (image I) and of the previous image ( picture 1-1). The results obtained reveal zones of conflict 1 which correspond to crossings of motion vectors and zones of hole 2 where no vector passes.
- an intermediate compensated image in motion is associated with each subscan to determine the on or off values of the cells for said underscan.
- Figure 5 illustrates a first way to calculate cell values.
- the result of the motion estimation is a set of vectors V1 to V20 which all point to a single pixel of the image I.
- Each pixel of the image I has an associated motion vector which starts from the image 1-1.
- the motion vectors are grouped into vector fields CV1 to CV3.
- the vector fields CV1 to CV3 correspond to continuous pixel zones of the image I associated with the same motion vector by including the projection of this pixel zone on the image 1-1 along the axis of the motion vector associated.
- the grouping is done by comparison between the vectors associated with neighboring pixels, if two vectors are parallel then the two pixels belong to the same field. According to a variant, it is possible to admit that two vectors are parallel with a small margin of error, for example +/- 0.1 pixels of offset on the abscissa and / or on the ordinate.
- the calculation of an intermediate image associated with a sub-scanning is done at the instant corresponding to the end of said sub-scanning.
- For each pixel of the intermediate image we look at which vector field CV1 to CV3 applies.
- CV1 to CV3 applies.
- the projection may not correspond to a pixel of the image I, in this case, for example, the value of the nearest pixel is taken or a weighted average is carried out on the nearest pixel values.
- the pixel P3 If we are in a conflict zone such as for example the pixel P3, then we determine which vector field applies. For this, one carries out, according to the direction of each of the vector fields CV2 and CV3 in which the pixel P3 is placed, a projection of the pixel P3 on the one hand on the image I and on the other hand on the image 1 -1. Then, the difference is made between the pixel values (or the pixels resulting from a possible average) of the images I and 1-1 according to each of the directions. Next, the absolute values of the two differences are compared in order to determine in which direction the pixels of the images I and 1-1 are closest. Pixel P3 is then assigned to field CV2 corresponding to the direction for which the pixels of images I and 1-1 are the closest. Finally, the pixel P3 is then associated with the value corresponding to its projection on the image I in the direction of the field CV2 with which it is associated.
- a vector Vm is determined as a function of the vector fields CV1 and CV2 surrounding the hole area.
- the vector Vm is calculated by taking an average of the vectors associated with the vector fields CV1 and CV2 surrounding the area, the average being weighted by the distance on the intermediate image which separates the pixel P3 from each vector field CV1 and CV2.
- a projection of the pixel P3 is then carried out on the image 1-1 along the direction of the vector Vm to determine the value to be associated with the pixel P3.
- FIG. 6 represents a variant for determining the pixel values in the hole areas.
- the vector fields corresponding to the extensions of the vector fields of image 1-1 are determined.
- the pixels P1 to P3 being all in areas where at least one vector field CV2 and / or CV3 is present, the value of these pixels is determined for example as above.
- the pixel P3 being in a zone of holes, the vector field CV is taken into account which corresponds to the extension of a vector field calculated using images 1-1 and I-2.
- Pixel P3 is projected onto image 1-1 along the direction of the vector field CV.
- the value associated with pixel P3 is equal to the value of the pixel of image 1-1 according to the projection (or equal to the weighted average of the closest pixels).
- FIG. 7 On reception of a new image, one performs a first step E1 of motion estimation between the new image I and the previous image 1-1. This estimation of movement taking place according to one of the multiple known techniques.
- a second step E2 is carried out of extrapolation of motion vectors.
- a motion vector calculated from the motion vectors obtained during the first step E1 is associated with each pixel and for each subscanning.
- the motion vectors obtained for a first step E1 carried out on the previous image 1-1 are reused, as explained above.
- a third step E3 of gray level calculation is carried out.
- This third step E3 consists in determining the gray level which applies for each pixel of each subscan as a function of the associated calculated vector and of the current image I or of the previous image 1-1, as explained previously.
- the overlapping of the second and third steps E2 and E3 can be done as soon as a motion vector has been calculated for a pixel of a sub-scan.
- the calculation of the intermediate images is limited to the information necessary for determining the state of the cells for said sub-scanning. For each subscanning, the motion vector that is applicable is determined for each cell, but the corresponding gray level is only calculated if the motion vector does not point to a single pixel.
- the gray levels will be encoded during a step E4.
- the on or off state of a PAP cell for a given underscan is determined as a function of the pixel corresponding to the cell for the given underscan.
- the gray levels associated with the pixels contained in the vector field CV2 are all at level 127 and that the gray levels associated with the pixels contained in the field CV3 are all at level 64.
- the level of cell C12 is encoded at level 127 and the level of cell C18 is encoded at level 64.
- Cells C13 to C17 are at intermediate levels. For the sub-scan of weight 1, cells C13 to C17 belong to the field CV2.
- cells C13 to C16 belong to the field CV2 while cell C17 belongs to the field CV3.
- cells C13 to C15 belong to the CV2 field and cells C16 and C17 belong to the CV3 field.
- cells C13 and C14 belong to the field CV2 and cells C15 to C17 belong to the field CV3.
- cell C13 belongs to field CV2 and cells C14 to C17 belong to field CV3.
- cells C13 to C17 belong to the field CV3.
- the values encoded on cells C13 to C17 are therefore respectively equal to 127, 127, 95, 95 and 65.
- the creation of the ignition table is then done according to a known technique from the encoded levels.
- An image memory 800 receives a stream of images for storage. The size of the memory 800 makes it possible to memorize at least three images, the image 1 + 1 being memorized during the processing of the image I which uses the image 1-1.
- a calculation circuit 801 for example a signal processor, performs the encoding according to the method described above and supplies the ignition signals to the column control circuit of a plasma screen 803.
- a synchronization circuit 804 synchronizes the column control circuits 802 and lines 805.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01969885.1A EP1410373B1 (fr) | 2000-09-27 | 2001-09-14 | Procede et dispositif de traitement d'image pour corriger des defauts de visualisation d'objets mobiles |
AU2001290017A AU2001290017A1 (en) | 2000-09-27 | 2001-09-14 | Method and device for processing images to correct defects of mobile object display |
US10/381,559 US6980215B2 (en) | 2000-09-27 | 2001-09-14 | Method and device for processing images to correct defects of mobile object display |
KR10-2003-7003866A KR20030081306A (ko) | 2000-09-27 | 2001-09-14 | 이동 객체의 디스플레이에서 결함을 정정하기 위해이미지를 처리하기 위한 방법 및 디바이스 |
JP2002531402A JP4675025B2 (ja) | 2000-09-27 | 2001-09-14 | 移動物体表示の欠陥を補正する画像処理方法及び装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/12332 | 2000-09-27 | ||
FR0012332A FR2814627B1 (fr) | 2000-09-27 | 2000-09-27 | Procede et dispositif de traitement d'image pour corriger des defauts de visualisation d'objets mobiles |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002027702A1 true WO2002027702A1 (fr) | 2002-04-04 |
Family
ID=8854761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/002854 WO2002027702A1 (fr) | 2000-09-27 | 2001-09-14 | Procede et dispositif de traitement d'image pour corriger des defauts de visualisation d'objets mobiles |
Country Status (8)
Country | Link |
---|---|
US (1) | US6980215B2 (fr) |
EP (1) | EP1410373B1 (fr) |
JP (1) | JP4675025B2 (fr) |
KR (1) | KR20030081306A (fr) |
CN (1) | CN1248182C (fr) |
AU (1) | AU2001290017A1 (fr) |
FR (1) | FR2814627B1 (fr) |
WO (1) | WO2002027702A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1406236A3 (fr) * | 2002-10-02 | 2006-06-07 | Lg Electronics Inc. | Procédé et dispositif de commande d'un panneau d'affichage à plasma |
JP4363314B2 (ja) * | 2004-11-19 | 2009-11-11 | セイコーエプソン株式会社 | 画像データ処理装置及び画像データ処理方法 |
US8566751B2 (en) | 2005-01-24 | 2013-10-22 | International Business Machines Corporation | GUI pointer automatic position vectoring |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822536A2 (fr) | 1996-07-29 | 1998-02-04 | Fujitsu Limited | Procédé et dispositif pour l'affichage d'image en demi-teinte |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3712802B2 (ja) * | 1996-10-29 | 2005-11-02 | 富士通株式会社 | 中間調表示方法および表示装置 |
US6496194B1 (en) * | 1998-07-30 | 2002-12-17 | Fujitsu Limited | Halftone display method and display apparatus for reducing halftone disturbances occurring in moving image portions |
JP5077860B2 (ja) * | 2001-05-31 | 2012-11-21 | 株式会社日立プラズマパテントライセンシング | Pdpの駆動方法および表示装置 |
-
2000
- 2000-09-27 FR FR0012332A patent/FR2814627B1/fr not_active Expired - Fee Related
-
2001
- 2001-09-14 US US10/381,559 patent/US6980215B2/en not_active Expired - Lifetime
- 2001-09-14 CN CNB01816160XA patent/CN1248182C/zh not_active Expired - Fee Related
- 2001-09-14 AU AU2001290017A patent/AU2001290017A1/en not_active Abandoned
- 2001-09-14 WO PCT/FR2001/002854 patent/WO2002027702A1/fr active Application Filing
- 2001-09-14 JP JP2002531402A patent/JP4675025B2/ja not_active Expired - Fee Related
- 2001-09-14 KR KR10-2003-7003866A patent/KR20030081306A/ko not_active Application Discontinuation
- 2001-09-14 EP EP01969885.1A patent/EP1410373B1/fr not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822536A2 (fr) | 1996-07-29 | 1998-02-04 | Fujitsu Limited | Procédé et dispositif pour l'affichage d'image en demi-teinte |
Also Published As
Publication number | Publication date |
---|---|
CN1466744A (zh) | 2004-01-07 |
EP1410373B1 (fr) | 2013-12-25 |
FR2814627A1 (fr) | 2002-03-29 |
JP2004530917A (ja) | 2004-10-07 |
CN1248182C (zh) | 2006-03-29 |
FR2814627B1 (fr) | 2003-01-17 |
EP1410373A1 (fr) | 2004-04-21 |
AU2001290017A1 (en) | 2002-04-08 |
US6980215B2 (en) | 2005-12-27 |
KR20030081306A (ko) | 2003-10-17 |
JP4675025B2 (ja) | 2011-04-20 |
US20040095365A1 (en) | 2004-05-20 |
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