WO2020124562A1 - Procédé de traitement d'image, dispositif d'affichage et support de stockage lisible par ordinateur - Google Patents

Procédé de traitement d'image, dispositif d'affichage et support de stockage lisible par ordinateur Download PDF

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Publication number
WO2020124562A1
WO2020124562A1 PCT/CN2018/122695 CN2018122695W WO2020124562A1 WO 2020124562 A1 WO2020124562 A1 WO 2020124562A1 CN 2018122695 W CN2018122695 W CN 2018122695W WO 2020124562 A1 WO2020124562 A1 WO 2020124562A1
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WO
WIPO (PCT)
Prior art keywords
image
coordinate system
displayed
coordinate
coordinate value
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PCT/CN2018/122695
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English (en)
Chinese (zh)
Inventor
李友
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深圳市柔宇科技有限公司
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to PCT/CN2018/122695 priority Critical patent/WO2020124562A1/fr
Priority to CN201880097647.7A priority patent/CN113170087A/zh
Publication of WO2020124562A1 publication Critical patent/WO2020124562A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof

Definitions

  • the present application relates to the technical field of data processing, and in particular, to an image processing method, a display device, and a computer-readable storage medium.
  • robots In the current market, robots generally add a display screen to their head positions as a human-computer interaction interface.
  • the head of the existing robot is roughly spherical. Therefore, in order to adapt the display screen to the spherical head of the robot, a spherical curved display screen may be provided on the head of the robot.
  • the existing image pixels are generally adapted to the Cartesian coordinate system. For the display screen with a spherical surface, if the image of the Cartesian coordinate system is directly displayed on the display screen with a spherical surface, it may cause deformation when the image is displayed The phenomenon reduces the user experience.
  • the technical problem to be solved by the present application is to provide an image processing method, display device, and computer-readable storage medium that improve user experience.
  • the embodiments of the present application provide an image processing method, a display device, and a computer-readable storage medium, which can be conveniently displayed on a curved display screen.
  • the image processing method provided in the first aspect of the present application includes:
  • the acquired coordinate system is not the three-dimensional polar coordinate system, convert the acquired coordinate system to the three-dimensional polar coordinate system, and obtain the converted image to be displayed;
  • the display device provided in the second aspect of the present application includes:
  • a spherical curved screen the pixels on the spherical curved screen have spherical polar coordinate values corresponding to a three-dimensional polar coordinate system;
  • a processor connected to the spherical curved screen, the processor is used to obtain a coordinate system corresponding to the image to be displayed; the processor is also used to determine whether the coordinate system corresponding to the acquired image to be displayed is the same as the A three-dimensional polar coordinate system; if the acquired coordinate system is not the three-dimensional polar coordinate system, the processor is used to convert the acquired coordinate system to the three-dimensional three-dimensional polar coordinate system and obtain the converted The image to be displayed; the processor is also used to control displaying the converted image to be displayed on the spherical curved screen.
  • a computer-readable storage medium provided in a third aspect of the present application stores computer instructions of an image processing method in the computer-readable storage medium.
  • the computer instructions of the image processing method are executed by a processor to implement the above-mentioned image processing method.
  • the image processing method, the display device and the computer-readable storage medium of the present application can convert the image to be displayed which is different from the coordinate system corresponding to the display device before the image is displayed, so that the converted The image to be displayed is the same as the coordinate system corresponding to the display, and the converted image to be displayed can be displayed on the spherical curved screen, which is helpful to reduce the difference between the coordinate system corresponding to the image to be displayed and the coordinate system corresponding to the display device At the same time, the appearance of the display distortion improves the user experience.
  • FIG. 1 is a schematic diagram of a spherical curved screen in a three-dimensional Cartesian coordinate system in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of the projection of the spherical curved screen in FIG. 1 on the XY plane.
  • FIG. 3 is a flowchart of steps in an image processing method in an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a hardware structure of a display device in an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a spherical curved screen in a three-dimensional Cartesian coordinate system in an embodiment of the present application.
  • the spherical curved screen is a flexible display screen
  • any point in the preset area to the origin of the three-dimensional Cartesian coordinate system is equal.
  • the three-dimensional Cartesian coordinate system may include an X axis, a Y axis (such as the positive direction of the X axis and an angle between the positive directions of the Y axis of 90 degrees) located on the same plane passing through the origin O, and perpendicular to the XY The Z axis of the plane and passing through the origin O.
  • the coordinate values of the points on it can be represented by three-dimensional Cartesian coordinates, but also by spherical polar coordinates (or three-dimensional polar coordinates). Among them, three-dimensional Cartesian coordinates and spherical polar coordinates Can be converted between each other.
  • any point N′ on the spherical surface in the three-dimensional Cartesian coordinate system is expressed as (x, y, z)
  • the spherical polar coordinates of point N′ can be expressed as among them, Is the azimuth angle, which represents the angle between the projection point N of the point N′ on the XY plane of the three-dimensional Cartesian coordinate system and the coordinate origin O between the line O and the positive direction of the X axis;
  • ⁇ is the elevation angle, indicating that the point N′ is The angle between the line ON′ between the point N′ on the three-dimensional Cartesian coordinate system and the coordinate origin O and the positive direction of the Z axis.
  • the coordinate values (x, y, z) of the three-dimensional Cartesian coordinate system corresponding to the point N′ on the spherical surface screen x represents the connection between the projection point N of the point N′ on the XY plane and the coordinate origin O
  • the number of pixel points projected on the X axis x, y represents the connection point between the projection point N of the point N′ on the XY plane and the coordinate origin O.
  • the number of pixel points projected on the Y axis y, z represents the point N′ at The number z of pixels between the coordinate origin O and the projection on the Z axis.
  • x represents the projection point N of the point N′ on the XY plane and the coordinate origin O
  • y represents the distance between the projection point N of the point N′ on the XY plane and the coordinate origin O
  • z represents the point N′
  • R represents the number R or the distance R of the pixel points on the line ON between the projection point N of the arbitrary point N′ on the spherical surface on the XY plane of the three-dimensional Cartesian coordinate system and the coordinate origin O.
  • the spherical curved screen may include several pixels, and the coordinate value of each pixel may be defined by spherical polar coordinates.
  • each pixel on the spherical curved screen may be passed To express.
  • FIG. 2 is a schematic diagram of the projection of the spherical curved screen on the XY plane.
  • a circular area may be formed, wherein the circular area has a center O and a radius r.
  • r represents the number r or distance r of pixel points between any point N in the circular area and the coordinate origin O; It is the azimuth angle, which represents the angle between the line ON between the arbitrary point N and the coordinate origin O and the positive direction of the X axis.
  • the coordinate value of any point N in the two-dimensional Cartesian coordinate system XY can be expressed as (x, y), and the coordinate value in each two-dimensional Cartesian coordinate system has a corresponding two-dimensional polar coordinate representation Among them, the transformation between two-dimensional Cartesian coordinates and two-dimensional polar coordinates can be expressed as follows:
  • the coordinate value of the three-dimensional polar coordinate system corresponding to each pixel on the spherical curved screen Can be mapped to the coordinate value of the corresponding two-dimensional polar coordinate system by formula (3)
  • the coordinate value of the two-dimensional polar coordinate system is calculated by formula (5) Map to the coordinate values (x, y) of the two-dimensional Cartesian coordinate system.
  • FIG. 3 shows a flowchart of steps of an image processing method in an embodiment of the present application.
  • the image processing method includes steps:
  • Step 100 Obtain the coordinate system corresponding to the image to be displayed.
  • the type of image to be displayed may include a vector diagram or a bitmap.
  • the image to be displayed may include several pixels, and the coordinate value of each pixel may correspond to a two-dimensional Cartesian coordinate system.
  • the coordinate values of the two-dimensional Cartesian system corresponding to the pixels it contains can be expressed as (0, 0), (0, 1)... (0, 1079 )...(1,0), (1,2)...(1,1079)...(1919,1079).
  • the file format of the bitmap can include bmp, jpeg, gif, etc.
  • the image to be displayed may include one or more coordinate points and corresponding vector graphics, where the vector graphics may be provided with corresponding identification information.
  • the vector graphics can be rectangular, straight line, circle, ellipse, etc.
  • the identification information of the rectangular vector graphics can be expressed as ⁇ rect>
  • the identification information of the circular vector graphics can be expressed as ⁇ circle>
  • the identification of the elliptical vector graphics The information can be expressed as ⁇ ellipse>
  • the identification information of the linear vector graphic can be expressed as ⁇ line>.
  • the file format of the vector diagram may include bw, ai, cdr, dwg, svg, etc.
  • the image to be displayed may further include attribute information corresponding to the vector graphic.
  • the coordinate values of the coordinate points of the straight line include (x1, y1) and (x2, y2), where the parameter x1 of the coordinate value represents the starting coordinate of the straight line on the x axis, the parameter y1 represents the starting coordinate of the straight line on the Y axis, and the parameter x2 represents The end coordinate of the straight line on the X axis.
  • the parameter y2 represents the end coordinate of the straight line on the Y axis.
  • Linear vector graphics have no attribute information.
  • the coordinate value of the coordinate point is the coordinate of the vertex of the vector graphic.
  • the coordinates of the vertices of the rectangular vector graphics are the coordinate values (50, 20) corresponding to the coordinate points (x, y); the coordinates of the vertices of the circular vector graphics are corresponding to the coordinate points (cx, cy)
  • the coordinate value of (300, 150); the coordinates of the vertices of the vector graphics of the straight line are the coordinate values corresponding to the coordinate points (x1, y1) and (x2, y2), respectively (0, 0) and (200, 200 ).
  • the vector file can be parsed to obtain the identification information corresponding to the vector graphics contained in the vector file.
  • the corresponding vector graphics, coordinate points and/or attribute information can be obtained by keyword matching and/or regular expression.
  • the coordinate system corresponding to the image to be displayed may be different from the two-dimensional Cartesian coordinate system.
  • the coordinate system corresponding to the image to be displayed may be a two-dimensional polar coordinate system, and the coordinate values of the pixels or coordinate points of the image to be displayed may be expressed as
  • the coordinate system corresponding to the image to be displayed can also be three-dimensional polar coordinates (or spherical polar coordinates), and the coordinate values of the pixels or coordinate points of the image to be displayed can be expressed as
  • the coordinate values of the pixels or coordinate points of the image to be displayed are natural numbers (0, 1, ..., N).
  • the general value is 0 ⁇ 2 ⁇
  • r can be a value not less than 0, where r is a natural number when r represents the number of pixels; when r represents the distance, it can also be converted to the pixel representation .
  • the value of can be generally 0 to 2 ⁇
  • the value of ⁇ can range from 0 to ⁇
  • R can be a value not less than 0, where when r represents the number of pixels, r is a natural number.
  • the type of the coordinate system of the image to be displayed can be determined according to the coordinate value of the image to be displayed. For example, when the parameters of the coordinate values of the pixels or coordinate points of the image to be displayed are both angle values or at least two parameters are angle values, it can be determined that the coordinate system corresponding to the image to be displayed is a three-dimensional polar coordinate system; When the parameter of the coordinate value of the pixel point or coordinate point of the image includes a parameter of an angle value and a parameter of a natural value, it can be determined that the coordinate system corresponding to the image to be displayed is a two-dimensional polar coordinate system; when the image to be displayed When the parameters of the coordinate values of the pixel points or the coordinate points are all natural values or parameters that do not contain angle values, it can be determined that the coordinate system corresponding to the image to be displayed is a two-dimensional Cartesian coordinate system.
  • Step 102 Determine whether the obtained coordinate system corresponding to the image to be displayed is a three-dimensional polar coordinate system corresponding to the display device; if the obtained coordinate system is not a three-dimensional polar coordinate system, perform step 104; if The obtained coordinate system is the three-dimensional polar coordinate system, and step 108 is executed.
  • the coordinate system corresponding to the spherical curved screen is a three-dimensional polar coordinate system. Therefore, when the coordinate system corresponding to the image to be displayed is a two-dimensional Cartesian system or a two-dimensional polar coordinate system, it can be determined that the coordinate system corresponding to the image to be displayed is different from the three-dimensional polar coordinate system corresponding to the display device. When the coordinate system corresponding to the image to be displayed is a three-dimensional polar coordinate system, it is determined that the coordinate system corresponding to the image to be displayed is the same as the three-dimensional polar coordinate system.
  • Step 104 Convert the acquired coordinate system to the three-dimensional polar coordinate system, and obtain the converted image to be displayed.
  • the obtained coordinate system corresponding to the image to be displayed is a two-dimensional Cartesian coordinate system
  • the first conversion formula such as formula (5) and formula (6)
  • the two corresponding to the image to be displayed The coordinate values (x, y) of the Descartes coordinate system are converted to the coordinates of the two-dimensional polar coordinate system corresponding to the image to be displayed
  • the second conversion formula such as formula (3)
  • the coordinate values of the two-dimensional polar coordinate system corresponding to the image to be displayed Convert to the coordinate value corresponding to the three-dimensional polar coordinate system
  • the coordinate value of the two-dimensional polar coordinate system corresponding to the image to be displayed is Convert to the coordinate value corresponding to the three-dimensional polar coordinate system
  • the type of the image to be displayed includes a bitmap or a vector diagram
  • the type of the image to be displayed can be determined first when performing the conversion operation on the image to be displayed, and then, the acquired type can be obtained according to the type of the image to be displayed Transform to the three-dimensional Cartesian coordinate system.
  • the image to be displayed is a bitmap
  • the image to be displayed includes several pixels
  • the first coordinate value corresponding to each pixel in the image to be displayed can be converted to the second coordinate value corresponding to the three-dimensional polar coordinate system .
  • each pixel when the first coordinate value of each pixel in the image to be displayed is the coordinate value (x, y) corresponding to the two-dimensional Cartesian coordinate system, each pixel is converted according to the first conversion formula The first coordinate value (x, y) is converted to the intermediate coordinate value corresponding to the two-dimensional polar coordinate system And according to the second conversion formula, the intermediate coordinate value of each pixel Convert to the second coordinate value corresponding to the three-dimensional polar coordinate system
  • the first coordinate value of each pixel is the coordinate value corresponding to the two-dimensional polar coordinate system
  • the first coordinate value of each pixel is the coordinate value corresponding to the two-dimensional polar coordinate system
  • the image to be displayed when the image to be displayed is a vector diagram, the image to be displayed includes one or more coordinate points and vector graphics, and the third coordinate value and vector graphic corresponding to each coordinate point in the image to be displayed may be Converted to the fourth coordinate value corresponding to the three-dimensional polar coordinate system, wherein the third coordinate value corresponding to the coordinate point is the coordinate of the vertex of the vector graphic.
  • the third coordinate value of each coordinate point is the coordinate value (x, y) corresponding to the two-dimensional Cartesian coordinate system
  • the third coordinate value (x, y) of each coordinate point ) Convert to the intermediate coordinate value corresponding to the two-dimensional polar coordinate system
  • the middle coordinate value of the coordinate point
  • the data model corresponding to the vector graphics to generate the intermediate coordinate value of each pixel of the image to be displayed on the display device
  • the intermediate coordinate value of each pixel on the display device is displayed on the display device Convert to the fourth coordinate value corresponding to the three-dimensional polar coordinate system
  • the third coordinate value of each coordinate point is the coordinate value corresponding to the two-dimensional polar coordinate system
  • the data model corresponding to the vector graphics to generate the intermediate coordinate value of each pixel of the image to be displayed on the display device
  • the intermediate coordinate value of each pixel Convert to the fourth coordinate value corresponding to the three-dimensional polar coordinate system
  • the image to be displayed is a vector diagram and the identification information of the vector diagram is a straight line
  • the data model corresponding to the straight line can be obtained.
  • the straight line AB of the vector graphics the coordinate points included are A(x 1 , y 1 ) and B(x 2 , y 2 ).
  • the mathematical expression of the corresponding data model can be:
  • the intermediate coordinate values A(r 1 , ⁇ ) and B(r 2 , ⁇ ) corresponding to the converted coordinate points are obtained after conversion according to formula (5).
  • the converted coordinate point is substituted into formula (7) (that is, the data model of the straight line) and the expression is as follows.
  • the expression of the straight line AB is:
  • the values of r 1 , ⁇ , r 2 , and ⁇ have been determined, and the value range of r has also been determined. Therefore, in the data model of the linear vector graphics described above, the corresponding r can be obtained for a given r In this way, by enumerating the values of r located between r 2 and r 1 , the intermediate coordinate values of the two-dimensional polar coordinate system corresponding to each pixel displayed on the display device by the vector diagram can be obtained After that, according to the intermediate coordinate value of each pixel of the image to be displayed R in R, the number of pixels from each display pixel to the center of the sphere on the spherical curved screen, and the formula (3) can obtain the corresponding elevation angle ⁇ , which can determine the coordinate value of the corresponding three-dimensional polar coordinate system
  • Step 106 controlling to display the converted image to be displayed on the display device.
  • the polar coordinate values of the three-dimensional polar coordinate system corresponding to each pixel in the converted image to be displayed are all
  • the spherical polar coordinate values of the three-dimensional polar coordinate system corresponding to the pixels of the spherical curved screen are also expressed as Therefore, there is a one-to-one mapping between the image polar coordinate value of each pixel in the image to be displayed and the spherical polar coordinate value of the pixel of the spherical curved screen, and then the polar coordinate value of the image and the spherical polar coordinate
  • the mapping relationship between the values renders the corresponding pixel points in the spherical curved screen. For example, it is possible to control rendering of pixels corresponding to spherical polar coordinate values that are the same as the image polar coordinate values in the spherical curved screen, and the converted image to be displayed can be displayed.
  • the straight line AB displayed on the spherical curved screen may be an arc.
  • Step 108 Control the display of the image to be displayed on the display device.
  • the coordinate system corresponding to the image to be displayed is a three-dimensional polar coordinate system, it means that the image to be displayed can be directly rendered through the corresponding pixel points on the spherical curved screen to directly complete the display of the image to be displayed.
  • the above image processing method converts the image to be displayed that has a different coordinate system corresponding to the display device so that the converted image to be displayed is the same as the coordinate system corresponding to the display, and then the converted image to be displayed can be displayed On the spherical curved screen, it is helpful to reduce the phenomenon of display distortion when the coordinate system corresponding to the image to be displayed is different from the coordinate system corresponding to the display device, and it is also convenient to display on the curved display screen. Helps improve the user's experience.
  • FIG. 4 shows a schematic diagram of a hardware structure of a display device in an embodiment of the present application.
  • the display device 50 can be applied to the foregoing embodiments.
  • the following describes the display device 50 provided by the present application.
  • the display device 50 may include a processor 500, a storage device 502, and a display screen 504.
  • the display device 50 may further include other hardware parts, such as communication devices, which will not be repeated here.
  • the processor 500 can exchange data with the storage device 502 and the display screen 504 through the bus 506.
  • the processor 500 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the processor is the control center of the display device 50, and uses various interfaces and lines to connect the various parts of the entire display device 50 .
  • the storage device 502 may be used to store the computer program and/or module.
  • the processor 500 executes or executes the computer program and/or module stored in the storage device 502 and calls the storage device 502. Data to realize various functions of the image processing method.
  • the storage device 502 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, application programs required for at least one function, and the like.
  • the storage device 502 may include a high-speed random access storage device, and may also include a non-volatile storage device, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart, Media, Card, SMC), and a secure digital (Secure Digital) , SD) card, flash memory card (Flash Card), at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
  • a non-volatile storage device such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart, Media, Card, SMC), and a secure digital (Secure Digital) , SD) card, flash memory card (Flash Card), at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
  • a non-volatile storage device such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart, Media, Card, SMC), and a secure digital
  • the display screen 504 can display a user interface (UI) or a graphical user interface (GUI), including data such as photos, videos, and chat content.
  • the display device 504 can also be used as an input device and an output device.
  • the display device can include a liquid crystal display At least one of (LCD), thin-film transistor LCD (TFT-LCD), organic light-emitting diode (OLED) touch display, flexible touch display, three-dimensional (3D) touch display, and the like.
  • the display screen 504 may be a non-rectangular display screen, including but not limited to a circular display device and a spherical curved screen.
  • the processor 500 executes the program corresponding to the executable program code by reading the executable program code stored in the storage device 502, for executing the image processing method performed by the display device in any of the foregoing embodiments.

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Abstract

L'invention concerne un procédé de traitement d'image, un dispositif d'affichage et un support de stockage lisible par ordinateur. Le procédé comporte les étapes consistant à: acquérir un système de coordonnées correspondant à une image à afficher (100); déterminer si le système de coordonnées acquis correspondant à l'image à afficher est un système de coordonnées polaires tridimensionnelles correspondant au dispositif (102) d'affichage; si le système de coordonnées acquis n'est pas le système de coordonnées polaires tridimensionnelles, convertir le système de coordonnées acquis en le système de coordonnées polaires tridimensionnelles, et obtenir l'image convertie à afficher (104); et effectuer une commande pour afficher l'image convertie à afficher sur le dispositif d'affichage (106). Selon les modes de réalisation de la présente invention, une image à afficher qui diffère du système de coordonnées correspondant au dispositif d'affichage peut être convertie en vue d'un affichage, ce qui facilite l'affichage sur un écran d'affichage incurvé.
PCT/CN2018/122695 2018-12-21 2018-12-21 Procédé de traitement d'image, dispositif d'affichage et support de stockage lisible par ordinateur WO2020124562A1 (fr)

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CN201880097647.7A CN113170087A (zh) 2018-12-21 2018-12-21 图像处理方法、显示设备及计算机可读存储介质

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CN103295260A (zh) * 2013-06-08 2013-09-11 华东师范大学 一种基于旋转体三维显示器的实时体三维数据生成方法
CN107797278A (zh) * 2016-09-07 2018-03-13 美国梦境视觉公司 头戴式显示器

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