WO2020062025A1 - 确定拼接显示屏的偏移距离的方法以及相关的装置 - Google Patents

确定拼接显示屏的偏移距离的方法以及相关的装置 Download PDF

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Publication number
WO2020062025A1
WO2020062025A1 PCT/CN2018/108337 CN2018108337W WO2020062025A1 WO 2020062025 A1 WO2020062025 A1 WO 2020062025A1 CN 2018108337 W CN2018108337 W CN 2018108337W WO 2020062025 A1 WO2020062025 A1 WO 2020062025A1
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Prior art keywords
mosaic
display
display screen
mosaic display
offset distance
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PCT/CN2018/108337
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English (en)
French (fr)
Inventor
马希通
张阳阳
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/612,548 priority Critical patent/US11397551B2/en
Priority to PCT/CN2018/108337 priority patent/WO2020062025A1/zh
Priority to CN201880001527.2A priority patent/CN111492341B/zh
Publication of WO2020062025A1 publication Critical patent/WO2020062025A1/zh

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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1446Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1431Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display using a single graphics controller
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/02Composition of display devices
    • G09G2300/026Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264Details of driving circuits
    • G09G2310/0275Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0693Calibration of display systems
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00Aspects of display data processing
    • G09G2340/04Changes in size, position or resolution of an image
    • G09G2340/0464Positioning
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2356/00Detection of the display position w.r.t. other display screens
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/14Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/32Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory with means for controlling the display position

Definitions

  • the present invention relates to the field of display technology, and in particular, to a method for determining an offset distance of a mosaic display screen in a mosaic display system, a method for driving a mosaic display system, a corresponding control device, and a mosaic display system.
  • a mosaic display system is proposed for displaying a large-sized image.
  • a splicing display system is formed by physically splicing a plurality of display screens (also referred to as “splicing display screens”), which can realize single-screen display or multi-screen display.
  • Embodiments of the present invention provide a method and a corresponding control device for determining an offset distance of a mosaic display screen in a mosaic display system.
  • a method for determining an offset distance of a mosaic display screen in a mosaic display system includes a plurality of mosaic display screens arranged in a matrix.
  • a preset image is displayed in each of a plurality of stitching displays. Then select feature points in the preset image and determine the position of the corresponding feature points in the mosaic display system in the mosaic display system. Based on the positions of the feature points, at least one of a vertical offset distance and a horizontal offset distance of each mosaic display screen is determined.
  • determining the vertical offset distance of each spliced display screen based on the position of the feature point may include: selecting a first reference display screen for each line of the spliced display screen; A stitching display, determining a longitudinal offset of the position of the feature point in the stitching display relative to the position of the feature point in the first reference display; and determining the stitching display relative to the first reference based on the longitudinal offset The vertical pixel distance of the display as the vertical offset distance.
  • the vertical offset is determined by calculating the difference between the vertical coordinate of each feature point in each row of the spliced display screen and the vertical coordinate of the feature point in the corresponding first reference display screen.
  • determining the lateral offset distance of each mosaic display screen may include: for each column of the mosaic display screen, selecting a second reference display screen; for each of the columns of the mosaic display screen, A stitching display, determining a lateral offset of the position of the feature point in the stitching display relative to the position of the feature point in the second reference display; and determining the stitching display relative to the second reference based on the lateral offset The horizontal pixel distance of the display as the horizontal offset distance.
  • the lateral offset is determined by calculating the difference between the abscissa of each feature point in each column of the mosaic display screen and the abscissa of the feature point in the corresponding second reference display screen.
  • determining the vertical offset distance of each of the mosaic display screens may include: for each row of the mosaic display screens, determining a position of a corresponding feature point in an adjacent mosaic display screen. Determine the vertical pixel distance between adjacent tiled displays based on the vertical offset; and determine the row of tiled displays based on the vertical pixel distance between the adjacent tiled displays The vertical pixel distance of each of the mosaic display screens relative to the first reference display screen is taken as the vertical offset distance of each of the mosaic display screens, wherein the first reference display screen is one of the row of the mosaic display screens.
  • the vertical offset is determined by calculating the difference between the vertical coordinates of the corresponding feature points in the adjacent mosaic display screen.
  • determining the lateral offset distance of each tiled display screen may include: for each column of tiled display screens, determining a position of a corresponding feature point in an adjacent tiled display screen Determine the horizontal pixel distance between adjacent spliced displays based on the horizontal offset; and determine the column of spliced displays based on the horizontal pixel distance between adjacent spliced displays The horizontal pixel distance of each of the mosaic display screens relative to the second reference display screen is taken as the lateral offset distance of each of the mosaic display screens, where the second reference display screen is one of the column of the mosaic display screens.
  • the lateral offset is determined by calculating the difference between the abscissas of the corresponding feature points in the adjacent mosaic display screen.
  • the preset image may be one of the following images: a cross-line pattern formed by the intersection of line segments parallel to adjacent two sides of the spliced display screen; and a parallel to the row direction of the matrix of the spliced display screen A first line pattern; a second line pattern parallel to the column direction of the matrix of the mosaic display screen.
  • the preset image includes a first preset image and a second preset image, wherein a first feature point is selected in the first preset image for determining a longitudinal deviation between the mosaic display screens. Shift the distance, and select a second feature point in the second preset image to determine a lateral offset distance between the mosaic display screens.
  • the first preset image is a first line pattern parallel to the row direction of the matrix of the mosaic display screen
  • the second preset image is a second line pattern parallel to the column direction of the matrix of the mosaic display screen.
  • a method for driving a mosaic display system wherein the mosaic display system includes a plurality of mosaic display screens arranged in a matrix.
  • a data signal for driving each of the mosaic display screens is modified based on a vertical offset distance and / or a horizontal offset distance of each of the multiple display screens, wherein the vertical offset distance and / or the horizontal offset are modified
  • the distance is determined using the method according to the first aspect of the invention.
  • the modified data signal is driven to display.
  • the method may further include: displaying the number of pixel rows corresponding to the corresponding vertical offset distance in the corresponding mosaic display screen to be black based on the vertical offset distance of each mosaic display screen, wherein, The pixel row is located at an edge of the corresponding tiled display screen that is in the same offset direction as the corresponding longitudinal offset distance; and / or based on the horizontally offset distance of each tiled display screen, The number of pixel columns corresponding to the lateral offset distance is displayed in black, where the pixel columns are located on the same edge of the corresponding mosaic display screen as the offset direction of the corresponding lateral offset distance.
  • a control device for a mosaic display system wherein the mosaic display system includes a plurality of mosaic display screens arranged in a matrix.
  • the control device may include: one or more processors; a memory coupled to the processor and storing computer program instructions, wherein the computer program instructions, when executed by the processor, cause the control device to execute the first
  • the method in one aspect determines a vertical offset distance and / or a horizontal offset distance of each mosaic display screen.
  • the computer program instructions when executed by the processor, further cause the control device to modify the data for driving each of the mosaic display screens based on the longitudinal offset distance and / or the lateral offset distance of each mosaic display screen. Signal; and use the modified data signal to drive the corresponding spliced display for display.
  • a mosaic display system may include: a plurality of mosaic display screens arranged in a matrix; and a control device according to a third aspect of the present invention, the control device being coupled to the plurality of mosaic display screens.
  • FIG. 1 is a schematic flowchart of a method for determining an offset distance of a mosaic display screen in a mosaic display system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram for explaining an example of determining an offset distance of a mosaic display screen according to an embodiment of the present invention
  • 3a and 3b are schematic diagrams for explaining another example of determining an offset distance of a mosaic display screen according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for driving a mosaic display system according to an embodiment of the present invention
  • 5a and 5b are exemplary diagrams for explaining processing of vertical and horizontal offsets of a mosaic display screen
  • FIG. 6 is a schematic block diagram of a control device for a mosaic display system according to an embodiment of the present invention.
  • FIG. 7 is a schematic block diagram of a mosaic display system according to an embodiment of the present invention.
  • the articles “a,” “an,” “the,” and “said” are intended to mean that there are one or more of the elements.
  • the terms “comprising,” “including,” “containing,” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements.
  • the terms “first”, “second”, “third”, etc. are used for the purpose of description to distinguish one component (or part of a component) from another component (or another part of a component), and cannot be understood as indicating or Imply relative importance and order of formation.
  • the flowchart depicted in the present invention is only an example. There may be many variations to this flowchart or the steps described therein without departing from the spirit of the invention. For example, the steps may be performed in a different order, or steps may be added, deleted, or modified. These variations are considered part of the claimed aspect.
  • the terms “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, and Its derivatives should relate to inventions.
  • the terms “overlay”, “on !, “located on ! or “located on " mean that a first element such as a first structure exists in a second element such as a second structure Above, there may be an intermediate element such as an interface structure between the first element and the second element.
  • contact means connecting a first element such as a first structure and a second element such as a second structure, and there may or may not be other elements at the interface of the two elements.
  • an embodiment of the present invention provides a technology for determining such a stitching error and then correcting the image display, thereby making up for the stitching error and improving the display effect.
  • FIG. 1 shows a schematic flowchart of a method for determining an offset distance of a mosaic display screen in a mosaic display system according to an embodiment of the present invention.
  • the mosaic display system includes a plurality of mosaic displays arranged in an M ⁇ N matrix.
  • a preset image is displayed in each mosaic display screen.
  • the preset image may be arbitrary, such as a cross line pattern, a horizontal line pattern, or a vertical line pattern.
  • the preset image displayed in each stitching display screen is the same.
  • a feature point is selected in a preset image.
  • the feature point is used as a reference point for determining the offset distance, which may be any point in the preset image.
  • the position of the feature point in each mosaic display screen in the mosaic display system is determined. In the embodiment of the present invention, a plane rectangular coordinate system can be established for the mosaic display system.
  • step S140 based on the position of the feature point, at least one of a vertical offset distance and a horizontal offset distance of each mosaic display screen is determined.
  • the following describes the process of determining the offset distance of the mosaic display screen as shown in FIG. 1 in detail through two examples.
  • FIG. 2 shows a schematic diagram for explaining an example of determining an offset distance of a mosaic display screen according to an embodiment of the present invention.
  • the mosaic display system includes nine mosaic displays arranged in a 3 ⁇ 3 matrix, using (1,1), (1,2), (1,3), ( 2,1), (2,2), (2,3), (3,1), (3,2), (3,3).
  • a flat rectangular coordinate system is established for the mosaic display system, where the origin can be set at, for example, the lower left corner of the mosaic display (3,1), the X axis is the horizontal direction of the illustration, and the Y axis is the vertical direction of the illustration.
  • the unit length can be set to be related to the pixel size.
  • the preset image is displayed in each stitching display.
  • the preset image is a cross line pattern, where one line segment is parallel to the horizontal edge of the mosaic display, the other line segment is parallel to the vertical edge of the mosaic display, and the two line segments intersect at the midpoint.
  • the image of the mosaic display system can be obtained by a camera, and the image is further analyzed to determine the coordinates of each feature point, that is, A 11 (x 11 , y 11 ), A 12 (x 12 , y 12 ) , A 13 (x 13 , y 13 ), A 21 (x 21 , y 21 ), A 22 (x 22 , y 22 ), A 23 (x 23 , y 23 ), A 31 (x 31 , y 31 ) , A 32 (x 32 , x 33 ), A 33 (x 33 , y 33 ).
  • Those skilled in the art should know that other methods can also be used to determine the location of the feature points.
  • the vertical offset distance of each mosaic display screen can be determined.
  • the first reference display screen is selected for each row of the spliced display screen.
  • a vertical pixel distance of the mosaic display relative to the first reference display is determined as the vertical offset distance of the mosaic display.
  • the stitching display (1,1), (1,2), (1,3) select the stitching display (1,1) as the reference display (corresponding to the "first reference Display "). Then, according to the ordinates y 11 , y 12 , y 13 of the feature points A 11 , A 12 , and A 13 in the mosaic display screens (1, 1), (1,2), and (1, 3) in the first row, , It can be determined that the vertical offsets of the mosaic display screens (1,1), (1,2), and (1,3) relative to the reference display screen are the differences in the ordinate, that is, 0, y 12 -y 11 and y 13 -y 11 .
  • the vertical pixel distance can be determined according to the vertical offset of the mosaic display screen as the vertical offset distance.
  • the vertical offset can be converted into the vertical pixel distance according to the relationship between the unit length of the coordinate system and the pixel size.
  • the vertical pixel distances of the stitching display (1,1), (1,2), and (1,3) relative to the reference display are 0, k ⁇ (y 12 -y 11 ) and k ⁇ (y 13 -y 11 ), as the vertical offset distances of the mosaic display screens (1,1), (1,2), and (1,3). Further, a rounding operation may be performed on the vertical pixel distance to facilitate subsequent image correction.
  • the mosaic display screen (2,1) is selected as the reference display screen.
  • the vertical coordinates y 21 , y 22 , y 23 of the feature points A 21 , A 22 , and A 23 in the mosaic display screens (2, 1), (2, 2), and (2, 3) in the second row It can be determined that the longitudinal offsets of the spliced display screens (2,1), (2,2) and (2,3) relative to the reference display screen are 0, y 22 -y 21 and y 23 -y 21 respectively .
  • the vertical pixel distances of the mosaic display screens (2,1), (2,2), and (2,3) relative to the reference display screen are 0, k ⁇ (y 22 -y 21 ), and k ⁇ ( y 23 -y 21 ), as the vertical offset distances of the spliced display screens (2,1), (2,2), and (2,3).
  • the mosaic display (3,1) is selected as the reference display.
  • the vertical offsets of 1), (3, 2) and (3, 3) relative to the reference display (3, 1) are 0, y 32 -y 31 and y 33 -y 31, respectively .
  • the vertical pixel distances of the mosaic display screens (3,1), (3,2), and (3,3) relative to the reference display screen are 0, k ⁇ (y 32 -y 31 ), and k ⁇ ( y 33 -y 31 ), as the vertical offset distances of the spliced display screens (3,1), (3,2), (3,3).
  • the vertical offset distance of each spliced display screen can also be determined through the operations described below. For each row of the mosaic display, determine the longitudinal offset between the positions of the corresponding feature points in the adjacent mosaic display. Then, based on the vertical offset, a vertical pixel distance between the adjacent mosaic display screens is determined. Further, the vertical pixel distance of each of the spliced displays in the row of the spliced display relative to the first reference display is determined as the vertical offset distance of each of the spliced displays, where the first reference display may be the line of the spliced display. Any one of the displays.
  • the mosaic display screen (1,2) for the first row of the mosaic display screens (1,1), (1,2), (1,3), according to the mosaic display screens (1,1), (1,2)
  • the ordinates y 11 , y 12 , and y 13 of the feature points A 11 , A 12 , and A 13 in (1,3) can determine the mosaic display screen (1,2) relative to the mosaic display screen (1,1) longitudinally offset y 12 -y 11, display splicing (1,3) with respect to the longitudinal offset splicing display (1,2) for y 13 -y 12.
  • the vertical pixel distance of the mosaic display screen (1,2) relative to the mosaic display screen (1,1) is k ⁇ (y 12 -y 11 ), and the mosaic display screen (1,3) is relative to the mosaic display screen.
  • the vertical pixel distance of (1,2) is k ⁇ (y 13 -y 12 ).
  • a spliced display screen (1, 1) may be selected as the reference display screen (corresponding to the “first reference display screen”).
  • the spliced display can be determined
  • the spliced display can be determined
  • the lateral offset distance of each mosaic display screen may be determined based on the coordinate values of the feature points.
  • a second reference display screen is selected for each column of the spliced display screen. Then, for each of the tiled display screens in the column, a lateral offset of the position of the feature point in the tiled display screen with respect to the position of the feature point in the second reference display screen is determined. Then, based on the lateral offset, a lateral pixel distance of the mosaic display relative to the second reference display is determined as the lateral offset distance of the mosaic display
  • the mosaic display (1,1) can be selected as the reference display (corresponding to the "second Reference display ").
  • the mosaic display can be determined
  • the lateral offsets of (1,1), (2,1), and (3,1) with respect to the reference display screen are the differences on the abscissa, that is, 0, x 21- x 11 and x 31- x 11 .
  • the difference between the abscissas is zero, it means that the mosaic display is not offset from the reference display; if the difference between the abscissas is positive, it indicates that the mosaic display is offset to the right relative to the reference display. ; If the difference in the abscissa is a positive value, it indicates that the mosaic display is offset to the left relative to the reference display.
  • the horizontal pixel distance of the mosaic display screen (1,1), (2,1), and (3,1) relative to the reference display screen is 0 respectively
  • K ⁇ (x 21 -x 11 ) and k ⁇ (x 31 -x 11 ) are used as the lateral offset distances of the mosaic display screens (1,1), (2,1), and (3,1).
  • the tiled display can be determined
  • the horizontal offsets of (1,2), (2,2), and (2,3) relative to the reference display are 0, x 22 -x 12 and x 32 -x 12, respectively .
  • the horizontal pixel distances of the mosaic display screens (1, 2), (2, 2), and (3, 2) relative to the reference display screen are 0, k ⁇ (x 22 -x 12 ), and k ⁇ ( x 32 -x 12 ), as the horizontal offset distance of the mosaic display (1,2), (2,2), (3,2).
  • the tiled display can be determined The lateral offsets of (1,3), (2,3), and (3,3) relative to the reference display are 0, x 23 -x 13 and x 33 -x 13, respectively . Then, it can be determined that the horizontal pixel distances of the mosaic display screens (1, 3), (2, 3), and (3, 3) relative to the reference display screen are 0, k ⁇ (x 23 -x 13 ), and k ⁇ ( x 33- x 13 ), as the horizontal offset distance of the mosaic display (1,2), (2,2), (3,2).
  • the lateral offset distance of each spliced display screen can also be determined through the operations described below. For each column of the mosaic display, determine the lateral offset between the positions of the corresponding feature points in the adjacent mosaic display. Then, based on the horizontal offset, a horizontal pixel distance between the adjacent mosaic display screens is determined. Then, the horizontal pixel distance of each of the mosaic display screens relative to the second reference display screen in the column of mosaic display screens is determined as the lateral offset distance of each of the mosaic display screens, where the second reference display screen may be the column mosaic display Any one of the screens.
  • the horizontal coordinates x 11 , x 21 , x 31 of the feature points A 11 , A 21 , and A 31 in (3,1) can determine that the mosaic display (2,1) is relative to the mosaic display (1,1) lateral offset x 21 -x 11, a display screen and splicing (3,1) with respect to the screen stitching (2,1) laterally offset y 31 -y 21.
  • the horizontal pixel distance of the mosaic display (2,1) relative to the mosaic display (1,1) is k ⁇ (x 21 -x 11 ), and the mosaic display (3,1) is relative to the mosaic display
  • the horizontal pixel distance of (2,1) is k ⁇ (x 31 -x 21 ).
  • the mosaic display screen (1,1) as the reference display screen (corresponding to the “second reference display screen”), and determine the mosaic display screens (1,1), (2,1), (2,1)
  • the mosaic display 1,3), (2,3), (3,3)
  • the first stitching display (1,1), (2,1), (3,1) in each row of stitching displays is selected as the first reference display, and each column is selected
  • the first splicing display (1,1), (1,2), (1,3) in the splicing display is used as the second reference display, but those skilled in the art should know that the display can be spliced in each row Any one of the spliced displays is selected as the first reference display of the row, and any one of the spliced displays is selected as the second reference display of the column.
  • an arbitrary point may be selected as a feature point on each of the horizontal line and the vertical line of the cross line pattern.
  • the feature points on the horizontal line are called “first feature points”
  • the feature points on the vertical line are called “second feature points”.
  • Determine the vertical coordinate of the first feature point in each mosaic display screen and determine the horizontal coordinate of the second feature point in each mosaic display screen.
  • the vertical offset distance and / or the horizontal offset distance of the corresponding mosaic display screen may be determined according to the vertical coordinate of each first feature point and the horizontal coordinate of each second feature point, respectively.
  • the process of determining the vertical offset distance and / or the horizontal offset distance is similar to the process of determining the vertical offset distance and / or the horizontal offset distance of the mosaic display screen described above, and is omitted here as appropriate.
  • 3a and 3b are schematic diagrams for explaining another example of determining an offset distance of a mosaic display screen according to an embodiment of the present invention, respectively.
  • the first preset image and / or the second preset image are displayed in each stitching display screen, and the longitudinal offset of each stitching display screen is determined according to the position of the first feature point in the first preset image.
  • the distance determines the lateral offset distance of each mosaic display screen according to the position of the second feature point in the second preset image.
  • a first preset image is displayed in each mosaic display screen.
  • the first preset image is a horizontal line pattern, wherein the horizontal line is located in the middle of the mosaic display screen and is parallel to the horizontal edge of the mosaic display screen. Then, any point can be selected as the first feature point on the horizontal line pattern. In this example, the first feature point is selected as point B.
  • the ordinates of 32 and B 33 are y 11 , y 12 , y 13 , y 21 , y 22 , y 23 , y 31 , y 32 , y 33 .
  • a vertical offset distance of each mosaic display screen may be determined.
  • the first feature points B 11 , B 12 , B 13 , B 21 , B 22 , B 23 , B 31 , B 32 , B 33 the ordinates y 11 , y 12 , y 13 , y 21 , Y 22 , y 23 , y 31 , y 32 , y 33 .
  • the vertical offset of the corresponding mosaic display screen is the difference between the vertical coordinates.
  • the vertical offset of each mosaic display screen is converted into a vertical pixel distance as the vertical offset distance.
  • a second preset image is displayed in each stitched display screen.
  • the second preset image is a vertical line pattern, wherein the vertical line is located at a middle position of each of the mosaic display screens and is parallel to the vertical edge of the mosaic display screens. Then, an arbitrary point is selected as the second feature point on the vertical line pattern. In this example, the second feature point is selected as the point C.
  • a lateral offset distance of each mosaic display screen may be determined.
  • the abscissas x 11 , x 12 , x 13 , x 21 , X 22 , x 23 , x 31 , x 32 , x 33 it can be determined that the horizontal offset of the corresponding mosaic display is the difference between the abscissas.
  • the lateral offset of each mosaic display screen is converted into a lateral pixel distance as the lateral offset distance.
  • the first preset image is a horizontal line pattern and the second preset image is a vertical line pattern
  • the first preset image is The image and the second preset image may be other images.
  • the method for determining the offset distance of a mosaic display screen can determine the vertical offset distance and / or the horizontal direction of each mosaic display screen for a mosaic display system using a physical mosaic method. Offset distance, so as to provide a basis for correct image display of mosaic display system.
  • FIG. 4 shows a schematic flowchart of a method for driving a mosaic display system according to an embodiment of the present invention.
  • step S410 based on the vertical offset distance and / or the horizontal offset distance of the mosaic display in each mosaic display, a data signal for driving each mosaic display is modified.
  • the vertical offset distance and / or the horizontal offset distance of each mosaic display screen may be determined according to the method as described with reference to FIGS. 1 to 3.
  • step S420 using the modified data signal, the corresponding spliced display screen is driven for display.
  • a data signal for driving each mosaic display screen is modified.
  • each mosaic display screen (1,1), (1,2), (1,3), (2,1), (2,2), ( 2,3), (3,1), (3,2), and (3,3), according to the determined vertical offset distance of each mosaic display, corresponding to the data signals used to drive each mosaic display , So that the image displayed on the mosaic display does not shift in the horizontal direction.
  • the data signals used to drive each of the tiled display screens are modified based on the lateral offset distance of the tiled display screens. For example, in the mosaic display system shown in FIG. 2, for each mosaic display screen (1,1), (1,2), (1,3), (2,1), (2,2), ( 2,3), (3,1), (3,2), and (3,3), according to the determined horizontal offset distance of the mosaic display, modify the data signals used to drive each mosaic display accordingly , So that the image displayed on the mosaic display screen will not be offset in the vertical direction.
  • the corresponding modified data signal is output to the mosaic display to drive each mosaic display to display an image.
  • the corresponding spliced display screen may have a number of pixel rows or The columns are displayed in black.
  • FIG. 5a and FIG. 5b show schematic diagrams for explaining this process, in which the splicing display screen (2, 2) in the splicing display system shown in FIG. 2 is used as an example for description.
  • the number of shifted pixel rows is k ⁇ (y 22 -y 21 ).
  • the vertical offset distance is zero, it means that there is no offset pixel row; if the vertical offset distance is positive, it means that the offset pixel row is at the top edge of the mosaic display screen; if the vertical offset distance is A negative value indicates that the offset pixel row is on the lower edge of the mosaic display. Then, when the image is displayed, the shifted pixel rows are displayed in black.
  • the number of shifted pixel columns is k ⁇ (x 22 -x 12 ). If the horizontal offset distance is zero, it indicates that there is no offset pixel column; if the horizontal offset distance is positive, it indicates that the offset pixel column is at the right edge of the display screen; if the horizontal offset distance is negative, it indicates that the pixel is offset.
  • the shifted pixels are listed on the left edge of the display. Then, when the image is displayed, the shifted pixel columns are displayed in black.
  • FIG. 6 shows a schematic block diagram of a control device 600 for a mosaic display system according to an embodiment of the present invention.
  • the control device 600 may include a processor 601 and a memory 602.
  • the memory 602 is coupled to the processor 601 and stores computer program instructions.
  • the control device 600 may determine the offset distance of each of the mosaic display systems in the mosaic display system by executing the method as described above with reference to FIGS. 1 to 3.
  • the control device 600 may further include an input / output device 603 that is coupled to the processor 601 and the memory 602 through a bus.
  • control device 600 may modify the corresponding data signals for driving each of the mosaic display screens according to the determined offset distance of each of the mosaic display screens, and use the modified data signals to drive the corresponding mosaic display screens for display. .
  • FIG. 7 shows a schematic block diagram of a mosaic display system 700 according to an embodiment of the present invention.
  • the mosaic display system 700 may include a plurality of mosaic display screens 701 arranged in a matrix and a control device 600 as shown in FIG. 6.
  • the control device 600 is coupled to each of the spliced display screens 701.
  • the images displayed on the respective mosaic display screens are not shifted, and even if a high-speed moving image is displayed, no splitting occurs.

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Abstract

一种在拼接显示系统中确定拼接显示屏的偏移距离的方法、驱动拼接显示系统的方法、用于拼接显示系统的控制装置和拼接显示系统。在确定拼接显示屏的偏移距离的方法中,在拼接显示系统的多个拼接显示屏的每一个中显示预设图像(S110);在预设图像中选择特征点(S120);确定各个拼接显示屏中的相应的特征点在拼接显示系统中的位置(S130);基于特征点的位置,确定各个拼接显示屏的纵向偏移距离和横向偏移距离中至少之一(S140)。

Description

确定拼接显示屏的偏移距离的方法以及相关的装置 技术领域
本发明涉及显示技术领域,具体地,涉及在拼接显示系统中确定拼接显示屏的偏移距离的方法、驱动拼接显示系统的方法、相应的控制装置以及拼接显示系统。
背景技术
当前,在诸如交通管理、视频监控、视频会议等许多系统中都期望显示大尺寸的图像,但传统尺寸的显示器难以满足这一要求。因此,提出了拼接显示系统以用于显示大尺寸的图像。通常,拼接显示系统通过将多个显示屏(也称为“拼接显示屏”)物理拼接来构成,能够实现单屏显示或多屏显示。
发明内容
本发明的实施例提供了用于在拼接显示系统中确定拼接显示屏的偏移距离的方法和相应的控制装置。
根据本发明的第一方面,提供了一种用于在拼接显示系统中确定拼接显示屏的偏移距离的方法,其中,拼接显示系统包括排列成矩阵状的多个拼接显示屏,在该方法中,在多个拼接显示屏的每一个中显示预设图像。然后在预设图像中选择特征点,并确定拼接显示屏中的相应的特征点在拼接显示系统中的位置。基于特征点的位置,确定各个拼接显示屏的纵向偏移距离和横向偏移距离中至少之一。
在本发明的实施例中,基于特征点的位置,确定各个拼接显示屏的纵向偏移距离可包括:针对每一行拼接显示屏,选择第一参考显示屏;针对该行拼接显示屏中的每一个拼接显示屏,确定拼接显示屏中的特征点的位置相对于第一参考显示屏中的特征点的位置的纵向偏移量;以及基于纵向偏移量,确定拼接显示屏相对于第一参考显示屏的纵向像素距离,作为纵 向偏移距离。
在本发明的实施例中,纵向偏移量通过计算每一行拼接显示屏中的各个特征点的纵坐标与对应的第一参考显示屏中的特征点的纵坐标之间的差值来确定。
在本发明的实施例中,基于特征点的位置,确定各个拼接显示屏的横向偏移距离可包括:针对每一列拼接显示屏,选择第二参考显示屏;针对该列拼接显示屏中的每一个拼接显示屏,确定拼接显示屏中的特征点的位置相对于第二参考显示屏中的特征点的位置的横向偏移量;以及基于横向偏移量,确定拼接显示屏相对于第二参考显示屏的横向像素距离,作为横向偏移距离。
在本发明的实施例中,横向偏移量通过计算每一列拼接显示屏中的各个特征点的横坐标与对应的第二参考显示屏中的特征点的横坐标之间的差值来确定。
在本发明的实施例中,基于特征点的位置,确定各个拼接显示屏的纵向偏移距离可包括:针对每一行拼接显示屏,确定相邻的拼接显示屏中的相应的特征点的位置之间的纵向偏移量;基于纵向偏移量,确定相邻的拼接显示屏之间的纵向像素距离;以及根据所述相邻的拼接显示屏之间的纵向像素距离,确定该行拼接显示屏中的各个拼接显示屏相对于第一参考显示屏的纵向像素距离,作为各个拼接显示屏的纵向偏移距离,其中,第一参考显示屏是该行拼接显示屏中的一个。
在本发明的实施例中,纵向偏移量通过计算相邻的拼接显示屏中的相应的特征点的纵坐标之间的差值来确定。
在本发明的实施例中,基于特征点的位置,确定各个拼接显示屏的横向偏移距离可包括:针对每一列拼接显示屏,确定相邻的拼接显示屏中的相应的特征点的位置之间的横向偏移量;基于横向偏移量,确定相邻的拼接显示屏之间的横向像素距离;以及根据所述相邻的拼接显示屏之间的横向像素距离,确定该列拼接显示屏中的各个拼接显示屏相对于第二参考显示屏的横向像素距离,作为各个拼接显示屏的横向偏移距离,其中,第二 参考显示屏是该列拼接显示屏中的一个。
在本发明的实施例中,横向偏移量通过计算相邻的拼接显示屏中的相应的特征点的横坐标之间的差值来确定。
在本发明的实施例中,预设图像可以是以下图像之一:由分别平行于拼接显示屏的相邻两边的线段相交而形成的交叉线图案;与拼接显示屏的矩阵的行方向平行的第一线图案;与拼接显示屏的矩阵的列方向平行的第二线图案。
在本发明的实施例中,预设图像包括第一预设图像和第二预设图像,其中,在第一预设图像中选择第一特征点以用于确定拼接显示屏之间的纵向偏移距离,在第二预设图像中选择第二特征点以用于确定拼接显示屏之间的横向偏移距离。
在本发明的实施例中,第一预设图像是与拼接显示屏的矩阵的行方向平行的第一线图案,第二预设图像是与拼接显示屏的矩阵的列方向平行的第二线图案。
根据本发明的第二方面,提供了一种用于驱拼接显示系统的方法,其中,拼接显示系统包括排列成矩阵状的多个拼接显示屏。在该方法中,基于多个拼接显示屏的各个的纵向偏移距离和/或横向偏移距离,修改用于驱动各个拼接显示屏的数据信号,其中,纵向偏移距离和/或横向偏移距离使用根据本发明的第一方面的方法确定。然后,使用修改后的数据信号,驱动相应的拼接显示屏进行显示。
在本发明的实施例中,该方法还可包括:基于各个拼接显示屏的纵向偏移距离,使相应的拼接显示屏中与相应的纵向偏移距离对应的数量的像素行显示黑色,其中,该像素行位于该相应的拼接显示屏的与该相应的纵向偏移距离的偏移方向相同的边缘;和/或基于各个拼接显示屏的横向偏移距离,使相应的拼接显示屏中与相应的横向偏移距离对应的数量的像素列显示黑色,其中,该像素列位于该相应的拼接显示屏的与该相应的横向偏移距离的偏移方向相同的边缘。
根据本发明的第三方面,提供了一种用于拼接显示系统的控制装置, 其中,拼接显示系统包括排列成矩阵状的多个拼接显示屏。该控制装置可包括:一个或多个处理器;存储器,该存储器与处理器耦接,并存储有计算机程序指令,其中,计算机程序指令在被处理器执行时使得控制装置执行根据本发明的第一方面的方法以确定各个拼接显示屏的纵向偏移距离和/或横向偏移距离。
在本发明的实施例中,计算机程序指令在被处理器执行时还使得控制装置:基于各个拼接显示屏的纵向偏移距离和/或横向偏移距离,修改用于驱动各个拼接显示屏的数据信号;以及使用修改后的数据信号,驱动相应的拼接显示屏进行显示。
根据本发明的第四方面,提供了一种拼接显示系统。该拼接显示系统可包括:排列成矩阵状的多个拼接显示屏;以及根据本发明的第三方面的控制装置,该控制装置与多个拼接显示屏耦接。
附图说明
为了更清楚地说明本发明的实施例的技术方案,下面将对实施例的附图进行简要说明,应当知道,以下描述的附图仅仅涉及本发明的一些实施例,而非对本发明的限制,其中,贯穿这些附图的各个视图,相应的参考编号指示相应的部件或特征:
图1是根据本发明的实施例的用于在拼接显示系统中确定拼接显示屏的偏移距离的方法的示意性流程图;
图2是用于说明根据本发明的实施例的确定拼接显示屏的偏移距离的一个示例的示意图;
图3a和图3b是用于说明根据本发明的实施例的确定拼接显示屏的偏移距离的另一个示例的示意图;
图4是根据本发明的实施例的用于驱动拼接显示系统的方法的示意性流程图;
图5a和图5b是用于说明处理拼接显示屏的纵向偏移和横向偏移的示例性示意图;
图6是根据本发明的实施例的用于拼接显示系统的控制装置的示意性框图;
图7是根据本发明的实施例的拼接显示系统的示意性框图。
具体实施方式
为了使本发明的实施例的目的、技术方案和优点更加清楚,下面将结合附图,对本发明的实施例的技术方案进行清楚、完整的描述。显然,所描述的实施例是本发明的一部分实施例,而不是全部的实施例。基于所描述的本发明的实施例,本领域技术人员在无需创造性劳动的前提下所获得的所有其他实施例,也都属于本发明保护的范围。
当介绍本发明的元素及其实施例时,冠词“一”、“一个”、“该”和“所述”旨在表示存在一个或者多个要素。用语“包含”、“包括”、“含有”和“具有”旨在包括性的并且表示可以存在除所列要素之外的另外的要素。术语“第一”、“第二”、“第三”等仅为了描述的目的将一个部件(或部件的一部分)与另一个部件(或部件的另一部分)区分开,而不能理解为指示或暗示相对重要性及形成顺序。本发明中描绘的流程图仅仅是一个例子。在不脱离本发明精神的情况下,可以存在该流程图或其中描述的步骤的很多变型。例如,所述步骤可以以不同的顺序进行,或者可以添加、删除或者修改步骤。这些变型都被认为是所要求保护的方面的一部分。
出于下文表面描述的目的,如其在附图中被标定方向那样,术语“上”、“下”、“左”、“右”“垂直”、“水平”、“顶”、“底”及其派生词应涉及发明。术语“上覆”、“在……顶上”、“定位在……上”或者“定位在……顶上”意味着诸如第一结构的第一要素存在于诸如第二结构的第二要素上,其中,在第一要素和第二要素之间可存在诸如界面结构的中间要素。术语“接触”意味着连接诸如第一结构的第一要素和诸如第二结构的第二要素,而在两个要素的界面处可以有或者没有其它要素。
除非另外定义,否则在此使用的所有术语(包括技术和科学术语)具有与本发明主题所属领域的技术人员所通常理解的相同含义。进一步将理 解的是,诸如在通常使用的词典中定义的那些的术语应解释为具有与说明书上下文和相关技术中它们的含义一致的含义,并且将不以理想化或过于正式的形式来解释,除非在此另外明确定义。如在此所使用的,将两个或更多部分“连接”或“耦接”到一起的陈述应指这些部分直接结合到一起或通过一个或多个中间部件结合。
当前,采用物理拼接方式构成的拼接显示屏系统都会存在拼接误差。因此,在显示图像时,尤其是高速运动图像,会导致图像割裂,影响显示效果。为了解决这一技术问题,本发明的实施例提供了用于确定这样的拼接误差并进而矫正图像显示的技术,从而弥补拼接误差,改善显示效果。
图1示出了根据本发明的实施例的用于在拼接显示系统中确定拼接显示屏的偏移距离的方法的示意性流程图。在本发明的实施例中,拼接显示系统包括排列成M×N矩阵的多个拼接显示屏。
如图1所示,在步骤S110,在每个拼接显示屏中显示预设图像。在本发明的实施例中,预设图像可以是任意的,例如交叉线图案、水平线图案或垂直线图案等。可选地,每个拼接显示屏中显示的预设图像是相同的。在步骤S120,在预设图像中选择特征点。在本发明的实施例中,特征点被用作确定偏移距离的参考点,其可以是预设图像中的任意一点。在步骤S130,确定各个拼接显示屏中的特征点在拼接显示系统中的位置。在本发明的实施例中,可以针对拼接显示系统建立平面直角坐标系。这样,特征点在拼接显示系统中的位置可用相应的坐标值来表示。然后,在步骤S140,基于特征点的位置,确定各个拼接显示屏的纵向偏移距离和横向偏移距离中至少之一。
以下通过两个示例详细描述如图1所示的确定拼接显示屏的偏移距离的过程。
图2示出了用于说明根据本发明的实施例的确定拼接显示屏的偏移距离的一个示例的示意图。在该示例中,如图2所示,拼接显示系统包括被排列成3×3矩阵的9个拼接显示屏,分别用(1,1)、(1,2)、(1,3)、(2,1)、(2,2)、(2,3)、(3,1)、(3,2)、(3,3)表示。另外,针对拼接显示系统建立平面直 角坐标系,其中,原点可被设置在例如拼接显示屏(3,1)的左下角,X轴为图示的水平方向,Y轴为图示的垂直方向,单位长度可设置为与像素尺寸相关。
首先,在每个拼接显示屏中显示预设图像。在本示例中,预设图像是交叉线图案,其中的一条线段与拼接显示屏的水平边缘平行,另一条线段与拼接显示屏的垂直边缘平行,且两条线段在中点处相交。
然后,在该交叉线图案上选择任意一点作为特征点。在本示例中,特征点被选择为交叉线图案上的相交点A。然后,确定在每个拼接显示屏中的该特征点的坐标值。在本示例中,可通过照相机获取拼接显示系统的图像,并进而对该图像进行分析以确定各个特征点的坐标,即A 11(x 11,y 11)、A 12(x 12,y 12)、A 13(x 13,y 13)、A 21(x 21,y 21)、A 22(x 22,y 22)、A 23(x 23,y 23)、A 31(x 31,y 31)、A 32(x 32,x 33)、A 33(x 33,y 33)。本领域的技术人员应当知道,还可以使用其他方法以确定特征点的位置。
然后,基于特征点的坐标值,可确定各个拼接显示屏的纵向偏移距离。在本发明的实施例中,对于每一行拼接显示屏,选择第一参考显示屏。对于该行拼接显示屏中的每一个拼接显示屏,确定每个拼接显示屏中的特征点的位置相对于第一参考显示屏中的特征点的位置的纵向偏移量。然后,基于该纵向偏移量,确定该拼接显示屏相对于第一参考显示屏的纵向像素距离,作为该拼接显示屏的纵向偏移距离。
在本示例中,对于第一行拼接显示屏(1,1)、(1,2)、(1,3),选择拼接显示屏(1,1)作为参考显示屏(对应于“第一参考显示屏”)。然后,根据第一行的拼接显示屏(1,1)、(1,2)、(1,3)中的特征点A 11、A 12、A 13的纵坐标y 11、y 12、y 13,可确定拼接显示屏(1,1)、(1,2)和(1,3)相对于参考显示屏的纵向偏移量为纵坐标之差,即分别为0,y 12-y 11和y 13-y 11。在本示例中,如果纵坐标之差为零,则表明拼接显示屏相对于参考显示屏没有偏移;如果纵坐标之差是正值,则表明拼接显示屏相对于参考显示屏向上偏移;如果纵坐标之差是正值,则表明拼接显示屏相对于参考显示屏向下偏移。进一步地,可根据拼接显示屏的纵向偏移量确定纵向像素距离,作为纵向偏移距离。 在本发明的实施例中,可根据坐标系的单位长度与像素尺寸之间的关系,将纵向偏移量转换成纵向像素距离。例如,假定坐标系的单位长度与像素尺寸的比值为k,则可确定拼接显示屏(1,1)、(1,2)和(1,3)相对于参考显示屏的纵向像素距离分别为0,k×(y 12-y 11)和k×(y 13-y 11),作为拼接显示屏(1,1)、(1,2)和(1,3)的纵向偏移距离。进一步地,可对纵向像素距离进行取整操作,以方便后续的图像矫正。
类似地,对于第二行拼接显示屏(2,1)、(2,2)、(2,3),选择拼接显示屏(2,1)作为参考显示屏。然后,根据第二行的拼接显示屏(2,1)、(2,2)、(2,3)中的特征点A 21、A 22、A 23的纵坐标y 21、y 22、y 23,可确定拼接显示屏(2,1)、(2,2)和(2,3)相对于参考显示屏的纵向偏移量分别为0,y 22-y 21和y 23-y 21。因此,可确定拼接显示屏(2,1)、(2,2)和(2,3)相对于参考显示屏的纵向像素距离分别为0,k×(y 22-y 21)和k×(y 23-y 21),作为拼接显示屏(2,1)、(2,2)和(2,3)的纵向偏移距离。
类似地,对于第三行拼接显示屏(3,1)、(3,2)、(3,3),选择拼接显示屏(3,1)作为参考显示屏。根据拼接显示屏(3,1)、(3,2)、(3,3)的特征点A 31、A 32、A 33的纵坐标y 31、y 32、y 33确定拼接显示屏(3,1)、(3,2)和(3,3)相对于参考显示屏(3,1)的纵向偏移量分别为0、y 32-y 31和y 33-y 31。因此,可确定拼接显示屏(3,1)、(3,2)、(3,3)相对于参考显示屏的纵向像素距离分别为0、k×(y 32-y 31)和k×(y 33-y 31),作为拼接显示屏(3,1)、(3,2)、(3,3)的纵向偏移距离。
在本发明的其它实施例中,也可通过以下描述的操作来确定各个拼接显示屏的纵向偏移距离。对于每一行拼接显示屏,确定相邻的拼接显示屏中的相应的特征点的位置之间的纵向偏移量。然后,基于该纵向偏移量,确定该相邻的拼接显示屏之间的纵向像素距离。进而,确定该行拼接显示屏中的各个拼接显示屏相对于第一参考显示屏的纵向像素距离,作为各个拼接显示屏的纵向偏移距离,其中,该第一参考显示屏可以是该行拼接显示屏中的任意一个。
在如图2所示的示例中,对于第一行拼接显示屏(1,1)、(1,2)、(1,3), 根据拼接显示屏(1,1)、(1,2)、(1,3)中的特征点A 11、A 12、A 13的纵坐标y 11、y 12、y 13,可确定拼接显示屏(1,2)相对于拼接显示屏(1,1)的纵向偏移量为y 12-y 11,拼接显示屏(1,3)相对于拼接显示屏(1,2)的纵向偏移量为y 13-y 12。然后,可确定拼接显示屏(1,2)相对于拼接显示屏(1,1)的纵向像素距离为k×(y 12-y 11),拼接显示屏(1,3)相对于拼接显示屏(1,2)的纵向像素距离为k×(y 13-y 12)。进一步地,可选择拼接显示屏(1,1)作为参考显示屏(对应于“第一参考显示屏”)。然后,确定拼接显示屏(1,1)、(1,2)、(1,3)相对于参考显示屏的纵向像素距离分别为0、k×(y 12-y 11)和k×(y 13-y 12)-k×(y 12-y 11)=k×(y 13-y 11),作为拼接显示屏(1,1)、(1,2)、(1,3)的纵向偏移距离。
类似地,对于第二行拼接显示屏(2,1)、(2,2)、(2,3),如果拼接显示屏(2,1)被选择为参考显示屏,则可确定拼接显示屏(2,1)、(2,2)、(2,3)相对于参考显示屏的纵向像素距离分别为0、k×(y 22-y 21)和k×(y 23-y 22)-k×(y 22-y 21)=k×(y 23-y 21),作为拼接显示屏(2,1)、(2,2)、(2,3)的纵向偏移距离。
类似地,对于第三行拼接显示屏(3,1)、(3,2)、(3,3),如果拼接显示屏(3,1)被选择为参考显示屏,则可确定拼接显示屏(3,1)、(3,2)、(3,3)相对于参考显示屏的纵向像素距离分别为0、k×(y 32-y 31)和k×(y 33-y 32)-k×(y 32-y 31)=k×(y 33-y 31),作为拼接显示屏(3,1)、(3,2)、(3,3)的纵向偏移距离。
额外地或可替代地,基于特征点的坐标值,可确定各个拼接显示屏的横向偏移距离。在本发明的实施例中,对于每一列拼接显示屏,选择第二参考显示屏。然后,对于该列拼接显示屏中的每一个拼接显示屏,确定该拼接显示屏中的特征点的位置相对于第二参考显示屏中的特征点的位置的横向偏移量。然后,基于该横向偏移量,确定该拼接显示屏相对于第二参考显示屏的横向像素距离,作为该拼接显示屏的横向偏移距离
在本示例中,对于第一列拼接显示屏(1,1)、(2,1)、(3,1),可选择拼接显示屏(1,1)作为参考显示屏(对应于“第二参考显示屏”)。根据拼接显示屏(1,1)、(2,1)、(3,1)中的特征点A 11、A 21、A 31的横坐标x 11、x 21、x 31,可确定拼接显示屏(1,1)、(2,1)和(3,1)相对于参考显示屏的横向偏移量为横坐标之差,即0、x 21-x 11和x 31-x 11。在本示例中,如果横坐标之差为零,则表明 拼接显示屏相对于参考显示屏没有偏移;如果横坐标之差是正值,则表明拼接显示屏相对于参考显示屏向右偏移;如果横坐标之差是正值,则表明拼接显示屏相对于参考显示屏向左偏移。然后,根据坐标系的单位长度与像素尺寸之间的关系,可确定拼接显示屏(1,1)、(2,1)和(3,1)相对于参考显示屏的横向像素距离分别为0、k×(x 21-x 11)和k×(x 31-x 11),作为拼接显示屏(1,1)、(2,1)和(3,1)的横向偏移距离。
类似地,对于第二列拼接显示屏(1,2)、(2,2)、(3,2),如果拼接显示屏(1,2)被选择为参考显示屏,则可确定拼接显示屏(1,2)、(2,2)和(2,3)相对于参考显示屏的横向偏移量分别为0、x 22-x 12和x 32-x 12。然后,可确定拼接显示屏(1,2)、(2,2)、(3,2)相对于参考显示屏的横向像素距离分别为0、k×(x 22-x 12)和k×(x 32-x 12),作为拼接显示屏(1,2)、(2,2)、(3,2)的横向偏移距离。
类似地,对于第三列拼接显示屏(1,3)、(2,3)、(3,3),如果拼接显示屏(1,3)被选择为参考显示屏,则可确定拼接显示屏(1,3)、(2,3)和(3,3)相对于参考显示屏的横向偏移量分别为0、x 23-x 13和x 33-x 13。然后,可确定拼接显示屏(1,3)、(2,3)、(3,3)相对于参考显示屏的横向像素距离分别为0、k×(x 23-x 13)和k×(x 33-x 13),作为拼接显示屏(1,2)、(2,2)、(3,2)的横向偏移距离。
在本发明的其它实施例中,也可通过以下描述的操作来确定各个拼接显示屏的横向偏移距离。对于每一列拼接显示屏,确定相邻的拼接显示屏中的相应的特征点的位置之间的横向偏移量。然后,基于该横向偏移量,确定该相邻的拼接显示屏之间的横向像素距离。然后,确定该列拼接显示屏中的各个拼接显示屏相对于第二参考显示屏的横向像素距离,作为各个拼接显示屏的横向偏移距离,其中,第二参考显示屏可以是该列拼接显示屏中的任意一个。
在如图2所示的示例中,对于第一列拼接显示屏(1,1)、(2,1)、(3,1),根据拼接显示屏(1,1)、(2,1)、(3,1)中的特征点A 11、A 21、A 31的横坐标x 11、x 21、x 31,可确定拼接显示屏(2,1)相对于拼接显示屏(1,1)的横向偏移量为 x 21-x 11,以及拼接显示屏(3,1)相对于拼接显示屏(2,1)的横向偏移量为y 31-y 21。然后,可确定拼接显示屏(2,1)相对于拼接显示屏(1,1)的横向像素距离为k×(x 21-x 11),拼接显示屏(3,1)相对于拼接显示屏(2,1)的横向像素距离为k×(x 31-x 21)。进一步地,选择拼接显示屏(1,1)作为参考显示屏(对应于“第二参考显示屏”),并确定拼接显示屏(1,1)、(2,1)、(2,1)相对于参考显示屏的横向像素距离分别为0、k×(x 21-x 11)和k×(x 31-x 21)-k×(x 21-x 11)=k×(x 31-x 11),作为拼接显示屏(1,1)、(2,1)和(3,1)的横向偏移距离。
类似地,对于第二列拼接显示屏(1,2)、(2,2)、(3,2),如果选择拼接显示屏(1,2)作为参考显示屏,则可可确定拼接显示屏(1,2)、(2,2)、(3,2)相对于参考显示屏的横向像素距离分别为0、k×(x 22-x 12)和k×(x 32-x 22)-k×(x 22-x 12)=k×(x 32-x 12),作为拼接显示屏(1,2)、(2,2)、(3,2)的横向偏移距离。
类似地,对于第三列拼接显示屏(1,3)、(2,3)、(3,3),如果选择拼接显示屏(1,3)作为参考显示屏,则可确定拼接显示屏(1,3)、(2,3)、(3,3)相对于参考显示屏的横向像素距离分别为0、k×(x 23-x 13)和k×(x 23-x 13)-k×(x 23-x 13)=k×(x 33-x 13),作为拼接显示屏(1,2)、(2,2)、(3,2)的横向偏移距离。
虽然在本示例的描述中,选择每行拼接显示屏中的第一个拼接显示屏(1,1)、(2,1)、(3,1)作为第一参考显示屏,并选择每列拼接显示屏中的第一个拼接显示屏(1,1)、(1,2)、(1,3)作为第二参考显示屏,但本领域的技术人员应当知道,可以在各行拼接显示屏中选择任意一个拼接显示屏作为该行的第一参考显示屏,而在各列拼接显示屏中可选择任意一个拼接显示屏作为该列的第二参考显示屏。
可替换地,在本示例中,也可在交叉线图案的水平线和垂直线上各选择任意一点作为特征点。为便于说明,将在水平线上的特征点称为“第一特征点”,在垂直线上的特征点称为“第二特征点”。确定各个拼接显示屏中的第一特征点的纵坐标,并确定各个拼接显示屏中的第二特征点的横坐标。额外地或可替代地,根据各第一特征点的纵坐标和各第二特征点的横坐标,可分别确定对应的拼接显示屏的纵向偏移距离和/或横向偏移距离。该确定纵向偏移距离和/或横向偏移距离的过程与前面描述的确定拼接显示屏的 纵向偏移距离和/或横向偏移距离的过程类似,在此适当省略。
图3a和图3b分别示出了用于说明根据本发明的实施例的确定拼接显示屏的偏移距离的另一个示例的示意图。在本示例中,在各个拼接显示屏中分别显示第一预设图像和/或第二预设图像,根据第一预设图像中的第一特征点的位置确定各个拼接显示屏的纵向偏移距离,额外地或可替代地,根据第二预设图像中的第二特征点的位置确定各个拼接显示屏的横向偏移距离。
如图3a所示,在每个拼接显示屏中显示第一预设图像。在本示例中,第一预设图像是水平线图案,其中,水平线位于拼接显示屏的中间位置,且与拼接显示屏的水平边缘平行。然后,在水平线图案上可选择任意一点作为第一特征点。在本示例中,第一特征点被选择为点B。然后,确定在每个拼接显示屏中的第一特征点B的纵坐标的坐标值,即第一特征点B 11、B 12、B 13、B 21、B 22、B 23、B 31、B 32、B 33的纵坐标y 11、y 12、y 13、y 21、y 22、y 23、y 31、y 32、y 33
然后,基于各个第一特征点的坐标值,可确定各个拼接显示屏的纵向偏移距离。在本示例中,根据第一特征点B 11、B 12、B 13、B 21、B 22、B 23、B 31、B 32、B 33的纵坐标y 11、y 12、y 13、y 21、y 22、y 23、y 31、y 32、y 33,可确定对应的拼接显示屏的纵向偏移量为纵坐标之差。然后,根据坐标系的单位长度与像素尺寸之间的关系,将各个拼接显示屏的纵向偏移量转换成纵向像素距离,作为纵向偏移距离。
额外地或可替代地,如图3b所示,在每个拼接显示屏中显示第二预设图像。在本示例中,第二预设图像是垂直线图案其中,垂直线位于各拼接显示屏的中间位置,且与拼接显示屏的垂直边缘平行。然后,在垂直线图案上选择任意一点作为第二特征点。在本示例中,第二特征点被选择为点C。然后,确定在每个拼接显示屏中的第二特征点的横坐标的坐标值,即第二特征点C 11、C 12、C 13、C 21、C 22、C 23、C 31、C 32、C 33的横坐标x 11、x 12、x 13、x 21、x 22、x 23、x 31、x 32、x 33
然后,基于第二特征点的坐标值,可确定各个拼接显示屏的横向偏移 距离。在本示例中,根据第二特征点C 11、C 12、C 13、C 21、C 22、C 23、C 31、C 32、C 33的横坐标x 11、x 12、x 13、x 21、x 22、x 23、x 31、x 32、x 33,可确定对应的拼接显示屏的横向偏移量为横坐标之差。然后,根据坐标系的单位长度与像素尺寸之间的关系,将各个拼接显示屏的横向偏移量转化为横向像素距离,作为横向偏移距离。
另外,虽然在上面的描述中,第一预设图像是水平线图案,第二预设图像是垂直线图案,但本领域中的技术人员应当理解,在本发明的一些实施例中,第一预设图像和第二预设图像也可以是其它图像。
通过以上描述可以看出,采用根据本发明的实施例的确定拼接显示屏的偏移距离的方法,能够针对采用物理拼接方式的拼接显示系统确定各个拼接显示屏的纵向偏移距离和/或横向偏移距离,从而为矫正拼接显示系统的图像显示提供基础。
图4示出了根据本发明的实施例的用于驱动拼接显示系统的方法的示意性流程图。
如图4所示,在步骤S410,基于各个拼接显示屏中的拼接显示屏的纵向偏移距离和/或横向偏移距离,修改用于驱动各个拼接显示屏的数据信号。在本发明的实施例中,各个拼接显示屏的纵向偏移距离和/或横向偏移距离可根据如参照图1至图3所描述的方法确定。在步骤S420,使用修改后的数据信号,驱动相应的拼接显示屏进行显示。
在本发明的实施例中,首先,基于拼接显示屏的纵向偏移距离,修改用于驱动各个拼接显示屏的数据信号。
在例如如图2所示的拼接显示系统中,对于每个拼接显示屏(1,1)、(1,2)、(1,3)、(2,1)、(2,2)、(2,3)、(3,1)、(3,2)和(3,3),根据所确定的各拼接显示屏的纵向偏移距离,对用于驱动各个拼接显示屏的数据信号进行相应的修改,以使得在拼接显示屏上显示的图像在水平方向上不会产生偏移。
额外地或可替代地,基于拼接显示屏的横向偏移距离,修改用于驱动各个拼接显示屏的数据信号。在例如如图2所示的拼接显示系统中,对于每个拼接显示屏(1,1)、(1,2)、(1,3)、(2,1)、(2,2)、(2,3)、(3,1)、(3,2) 和(3,3),根据所确定拼接显示屏的横向偏移距离,对用于驱动各个拼接显示屏的数据信号进行相应的修改,以使得在拼接显示屏上显示的图像在垂直方向上不会产生偏移。
然后,向拼接显示屏输出相应的修改后的数据信号,以驱动各个拼接显示屏显示图像。
在本发明的其它实施例中,进一步地,可根据所确定的各个拼接显示屏的纵向偏移距离和/或横向偏移距离,使相应的拼接显示屏的与偏移对应数量的像素行或列显示为黑色。图5a和图5b示出了用于说明这一处理的示意图,其中,以图2所示的拼接显示系统中的拼接显示屏(2,2)为例进行说明。
如图5a所示,对于拼接显示屏(2,2),可确定偏移的像素行的数量为k×(y 22-y 21)。在本示例中,如果纵向偏移距离为零,则表明没有偏移的像素行;如果纵向偏移距离为正,则表明偏移的像素行在拼接显示屏的上边缘;如果纵向偏移距离为负,则表明偏移的像素行在拼接显示屏的下边缘。然后,在进行图像显示时,使偏移的像素行显示为黑色。
类似地,对于其它拼接显示屏(1,1)、(1,2)、(1,3)、(2,1)、(2,3)、(3,1)、(3,2)、(3,3),可确定相应的偏移的像素行,并使这些偏移的像素行显示为黑色。
额外地或可替代地,如图5b所示,对于拼接显示屏(2,2),可确定偏移的像素列的数量为k×(x 22-x 12)。如果横向偏移距离为零,则表明没有偏移的像素列;如果横向偏移距离为正,则表明偏移的像素列在显示屏的右边缘;如果横向偏移距离为负,则表明偏移的像素列在显示屏的左边缘。然后,在进行图像显示时,使偏移的像素列显示为黑色。
类似地,对于其它拼接显示屏(1,1)、(1,2)、(1,3)、(2,1)、(2,3)、(3,1)、(3,2)、(3,3),可确定相应的偏移的像素列,并使这些偏移的像素列显示为黑色。
图6示出了根据本发明的实施例的用于拼接显示系统的控制装置600的示意性框图。如图6所示,控制装置600可包括处理器601和存储器602。 存储器602与处理器601耦接,并存储计算机程序指令。当处理器601执行所存储的计算机程序指令时,控制装置600可通过执行如在前面参照图1至图3所描述的方法来确定拼接显示系统中的各个拼接显示屏的偏移距离。控制装置600还可包括输入/输出设备603,其通过总线与处理器601和存储器602耦接。
进一步地,控制装置600还可根据所确定的各个拼接显示屏的偏移距离,修改用于驱动各个拼接显示屏的相应的数据信号,并且使用修改后的数据信号驱动相应的拼接显示屏进行显示。
图7示出了根据本发明的实施例的拼接显示系统700的示意性框图。如图7所示,拼接显示系统700可包括排列成矩阵状的多个拼接显示屏701和如图6所示的控制装置600。控制装置600与每个拼接显示屏701耦接。
采用本实施例的拼接显示系统700,能够使得在各个拼接显示屏中显示的图像不发生偏移,即使显示高速运动的图像,也不产生割裂。
以上已经对本发明的若干实施例进行了详细描述,但这些实施例仅仅是示例性的,而并不旨在限制本发明的范围。事实上,本文所描述的实施例也可以以各种其它形式来实现。此外,在不脱离本发明的精神下,可以对本文所描述的实施例进行各种省略、替代和改变。所附权利要求以及它们的等同旨在覆盖落在本发明范围和精神内的此类形式或者修改。

Claims (17)

  1. 一种用于在拼接显示系统中确定拼接显示屏的偏移距离的方法,其中,所述拼接显示系统包括排列成矩阵状的多个拼接显示屏,所述方法包括:
    在所述多个拼接显示屏的每一个中显示预设图像;
    在所述预设图像中选择特征点;
    确定各个所述拼接显示屏中的相应的所述特征点在所述拼接显示系统中的位置;以及
    基于所述特征点的位置,确定各个所述拼接显示屏的纵向偏移距离和横向偏移距离中至少之一。
  2. 根据权利要求1所述的方法,其中,基于所述特征点的位置,确定各个所述拼接显示屏的纵向偏移距离包括:
    针对每一行拼接显示屏,选择第一参考显示屏;
    针对该行拼接显示屏中的每一个拼接显示屏,确定所述拼接显示屏中的所述特征点的位置相对于所述第一参考显示屏中的所述特征点的位置的纵向偏移量;以及
    基于所述纵向偏移量,确定所述拼接显示屏相对于所述第一参考显示屏的纵向像素距离,作为所述纵向偏移距离。
  3. 根据权利要求2所述的方法,其中,所述纵向偏移量通过计算每一行拼接显示屏中的各个特征点的纵坐标与对应的所述第一参考显示屏中的所述特征点的纵坐标之间的差值来确定。
  4. 根据权利要求1所述的方法,其中,基于所述特征点的位置,确定各个所述拼接显示屏的横向偏移距离包括:
    针对每一列拼接显示屏,选择第二参考显示屏;
    针对该列拼接显示屏中的每一个拼接显示屏,确定所述拼接显示屏中的所述特征点的位置相对于所述第二参考显示屏中的所述特征点的位置的横向偏移量;以及
    基于所述横向偏移量,确定所述拼接显示屏相对于所述第二参考显示 屏的横向像素距离,作为所述横向偏移距离。
  5. 根据权利要求4所述的方法,其中,所述横向偏移量通过计算每一列拼接显示屏中的各个特征点的横坐标与对应的所述第二参考显示屏中的所述特征点的横坐标之间的差值来确定。
  6. 根据权利要求1所述的方法,其中,基于所述特征点的位置,确定各个所述拼接显示屏的纵向偏移距离包括:
    针对每一行拼接显示屏,确定相邻的拼接显示屏中的相应的特征点的位置之间的纵向偏移量;
    基于所述纵向偏移量,确定所述相邻的拼接显示屏之间的纵向像素距离;以及
    根据所述相邻的拼接显示屏之间的纵向像素距离,确定该行拼接显示屏中的各个拼接显示屏相对于第一参考显示屏的纵向像素距离,作为各个所述拼接显示屏的所述纵向偏移距离,其中,所述第一参考显示屏是该行拼接显示屏中的一个。
  7. 根据权利要求6所述的方法,其中,所述纵向偏移量通过计算所述相邻的拼接显示屏中的相应的特征点的纵坐标之间的差值来确定。
  8. 根据权利要求1所述的方法,其中,基于所述特征点的位置,确定各个所述拼接显示屏的横向偏移距离包括:
    针对每一列拼接显示屏,确定相邻的拼接显示屏中的相应的特征点的位置之间的横向偏移量;
    基于所述横向偏移量,确定所述相邻的拼接显示屏之间的横向像素距离;以及
    根据所述相邻的拼接显示屏之间的横向像素距离,确定该列拼接显示屏中的各个拼接显示屏相对于第二参考显示屏的横向像素距离,作为各个所述拼接显示屏的所述横向偏移距离,其中,所述第二参考显示屏是该列拼接显示屏中的一个。
  9. 根据权利要求8所述的方法,其中,所述横向偏移量通过计算所述相邻的拼接显示屏中的相应的特征点的横坐标之间的差值来确定。
  10. 根据权利要求1至9任意一项所述的方法,其中,所述预设图像是以下图像之一:由分别平行于所述拼接显示屏的相邻两边的线段相交而形成的交叉线图案;与所述拼接显示屏的矩阵的行方向平行的第一线图案;与所述拼接显示屏的矩阵的列方向平行的第二线图案。
  11. 根据权利要求1至9任意一项所述的方法,其中,所述预设图像包括第一预设图像和第二预设图像,
    其中,在所述第一预设图像中选择第一特征点以用于确定所述拼接显示屏之间的所述纵向偏移距离,在所述第二预设图像中选择第二特征点以用于确定所述拼接显示屏之间的所述横向偏移距离。
  12. 根据权利要求11所述的方法,其中,所述第一预设图像是与所述拼接显示屏的矩阵的行方向平行的第一线图案,所述第二预设图像是与所述拼接显示屏的矩阵的列方向平行的第二线图案。
  13. 一种用于驱动拼接显示系统的方法,其中,所述拼接显示系统包括排列成矩阵状的多个拼接显示屏,所述方法包括:
    基于所述多个拼接显示屏的各个的纵向偏移距离和/或横向偏移距离,修改用于驱动各个所述拼接显示屏的数据信号,其中,所述纵向偏移距离和/或横向偏移距离使用根据权利要求1至12任意一项所述的方法确定;以及
    使用修改后的数据信号,驱动相应的拼接显示屏进行显示。
  14. 根据权利要求13所述的方法,还包括:
    基于各个所述拼接显示屏的所述纵向偏移距离,使相应的拼接显示屏中与相应的所述纵向偏移距离对应的数量的像素行显示黑色,其中,所述像素行位于所述相应的拼接显示屏的与所述相应的纵向偏移距离的偏移方向相同的边缘;和/或
    基于各个所述拼接显示屏的所述横向偏移距离,使相应的拼接显示屏中与相应的所述横向偏移距离对应的数量的像素列显示黑色,其中,所述像素列位于所述相应的拼接显示屏的与所述相应的横向偏移距离的偏移方向相同的边缘。
  15. 一种用于拼接显示系统的控制装置,其中,所述拼接显示系统包括排列成矩阵状的多个拼接显示屏,所述控制装置包括:
    一个或多个处理器;
    存储器,其与所述处理器耦接,并存储有计算机程序指令,其中,所述计算机程序指令在被所述处理器执行时使得所述控制装置执行根据权利要求1至12任意一项所述的方法以确定各个拼接显示屏的纵向偏移距离和/或横向偏移距离。
  16. 根据权利要求15所述的控制装置,其中,所述计算机程序指令在被所述处理器执行时还使得所述控制装置:
    基于各个所述拼接显示屏的纵向偏移距离和/或横向偏移距离,修改用于驱动各个所述拼接显示屏的数据信号;以及
    使用修改后的数据信号,驱动相应的拼接显示屏进行显示。
  17. 一种拼接显示系统,包括:
    排列成矩阵状的多个拼接显示屏;以及
    根据权利要求15或16所述的控制装置,其与所述多个拼接显示屏耦接。
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