CN110910802B - Holographic display method, device and readable storage medium - Google Patents
Holographic display method, device and readable storage medium Download PDFInfo
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- CN110910802B CN110910802B CN201911165120.6A CN201911165120A CN110910802B CN 110910802 B CN110910802 B CN 110910802B CN 201911165120 A CN201911165120 A CN 201911165120A CN 110910802 B CN110910802 B CN 110910802B
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- 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
- G09G3/005—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation
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Abstract
The application discloses a holographic display method, a device and a readable storage medium, wherein the holographic display method comprises the following steps: determining a spiral section of a phase surface of the planar display source according to the angular speed and the line scanning time of the planar display source; and according to the mapping relation of pixels between the phase surface and the spiral tangent plane, pixel data of each intersecting pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the pixel point corresponding to the phase surface, and the assigned phase surface is used as display frame data. According to the scheme, the delay distortion is determined according to the angular speed of the display source and the line scanning time, and the delay distortion is eliminated through algorithm compensation so as to display the non-distorted holographic image.
Description
Technical Field
The present invention relates generally to the field of display technology, and in particular, to a holographic display method, apparatus, and readable storage medium.
Background
The rotary holographic display realizes multi-phase display by the constant-speed rotation of the display according to the principle of visual persistence, and achieves true three-dimensional display.
With the increasing requirement of display resolution, an LCD (Liquid Crystal Display; liquid crystal display) or an OLED (Organic Light-Emitting Diode) may be used as a display source, but since the LCD and the OLED are refreshed row by row in the display of one frame, there is a display delay between adjacent rows, and in the rotation process of the display source, there is a problem that the angular position of the pixel display will have a delay, so that the frame of picture which is planar display is distorted into a spiral plane (such distortion is called delay distortion), so that the image displayed in a holographic manner is deformed.
Disclosure of Invention
It is desirable to provide a holographic display method, apparatus and readable storage medium for solving the problem of distortion of the holographic displayed image caused by delay distortion in the prior art.
In a first aspect, the present invention provides a holographic display method for a flat panel display source rotating about an axis, comprising the steps of:
determining a spiral section of a phase surface of the planar display source according to the angular speed and the line scanning time of the planar display source;
and according to the mapping relation of pixels between the phase surface and the spiral tangent plane, pixel data of each intersecting pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the pixel point corresponding to the phase surface, and the assigned phase surface is used as display frame data.
Further, if the flat display source rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, determining a mapping relation of pixels between the phase plane and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
Further, if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining a mapping relation of pixels between the phase plane and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
In a second aspect, the present invention provides a holographic display device for use with a flat panel display source rotatable about an axis, comprising:
the spiral section determining unit is used for determining the spiral section of the phase surface of the plane display source according to the angular speed and the line scanning time of the plane display source;
and the frame data determining unit is used for assigning pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed to the corresponding pixel point of the phase plane according to the mapping relation of the pixels between the phase plane and the spiral tangent plane, and taking the assigned phase plane as display frame data.
Further, if the flat display source rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, determining a mapping relation of pixels between the phase plane and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
Further, if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining a mapping relation of pixels between the phase plane and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
In a third aspect, the present invention provides a holographic display device, including a display screen mounting frame rotatably disposed around an axis, where a curved display screen is fixedly connected to the display screen mounting frame, and a spiral display surface of the curved display screen is determined according to an angular speed and a line scanning time of rotation of the curved display screen, where the spiral display surface is used to eliminate delay distortion of holographic display.
Further, if the curved display screen rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, determining the spiral display surface according to the following relation:
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X ', Y ', Z ') is the coordinate of the pixel point of the spiral display surface, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the curved display screen, alpha is the phase angle, omega is the angular speed of the curved display screen, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the curved display screen.
Further, if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining the spiral display surface according to the following relation:
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X ', Y ', Z ') is the coordinate of the pixel point of the spiral display surface, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the curved display screen, alpha is the phase angle, omega is the angular speed of the curved display screen, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the curved display screen.
In a fourth aspect, the present invention provides a readable storage medium storing a computer program which when executed implements the holographic display method described above.
According to the scheme, the delay distortion is determined according to the angular speed of the display source and the line scanning time, and the delay distortion is eliminated through algorithm compensation or structural compensation so as to display the non-distorted holographic image.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a top view of the holographic display principle;
FIG. 2 is a perspective view of the holographic display principle;
FIG. 3 is a schematic diagram of phase plane right-hand twist;
FIG. 4 is a schematic diagram of phase plane left-hand twist;
FIG. 5 is a schematic diagram of a holographic display method provided by an embodiment of the present invention;
FIG. 6 is a schematic diagram of a mapping relationship between pixels in a phase plane and a spiral plane;
fig. 7 is an exploded view of a holographic display device according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
When the eyes observe a scene, light signals are transmitted into brain nerves, a short period of time is required, visual images do not disappear immediately after the light is acted, the residual vision is called "afterimage", and the phenomenon of vision is called "persistence of vision". Holographic display is to display holographic images by utilizing the principle of persistence of vision of human eyes. As shown in fig. 1 and 2, the holographic display is based on a display source 1 (which may also be referred to as a display screen, a display panel, etc.) rotating at a certain speed, and a high-speed refreshed image is used to display specific contents at specific phases, and after the refresh frequency of each phase reaches 24Hz or more, the continuous holographic image can be displayed by breaking through the visual limit of human eyes. Each block in fig. 1 and 2 represents one pixel 2 of a corresponding phase, and the display precision is higher when the display source 1 rotates by one angle to be one phase, and the more the phases are, the denser the pixels are. When the display source rotates to the corresponding phase, the pixel 2 of the display source is controlled to display, and when the rotating speed of the display source reaches a certain value, holographic display can be formed in the cylindrical space swept by the display source.
In order to improve the display accuracy and achieve the retinal holographic display effect, an LCD or OLED may be used as a display source. However, since the LCD and OLED are refreshed row by row in the display of one frame, there is a display delay (the time of the delay is generally the line scanning time) between adjacent lines, and in the rotation process of the display source, the angle position of the pixel display will have a delay problem, so that the frame of the image displayed by the flat display is distorted into a spiral plane (such distortion is called delay distortion), so that the image displayed by the hologram is deformed, and there are two situations of left-handed distortion and right-handed distortion according to the different rotation directions of the display source and the different orders of the line scanning. Wherein fig. 3 shows a right-hand twist, which means that the phase plane 3 is twisted along a right-hand spiral to a helical cut surface 4, and fig. 4 shows a left-hand twist, which means that the phase plane 3 is twisted along a left-hand spiral to a helical cut surface 4.
In order to solve the above problems, as shown in fig. 5, a holographic display method according to an embodiment of the present invention is applied to a flat display source rotated around an axis, which may be a flat LCD, an OLED, etc., and includes the steps of:
s10: determining a spiral section of a phase surface of the planar display source according to the angular speed and the line scanning time of the planar display source;
for a phase plane, in the process of displaying a frame of image, from the beginning of pixel refreshing of a first row to the end of pixel refreshing of a last row, the image of a second row is offset by an angle omega t compared with the image of the first row, the image of an nth row is offset by an angle omega t (n-1) compared with the image of the first row, omega is the angular velocity of the plane display source, t is the scanning time of the pixels of the rows, and the plane image displayed on the phase plane is expected to become a curved surface display image of a spiral section.
S21: and according to the mapping relation of pixels between the phase surface and the spiral tangent plane, pixel data of each intersecting pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the pixel point corresponding to the phase surface, and the assigned phase surface is used as display frame data.
And assigning pixel data of each intersection pixel point of the spiral tangential plane and the holographic image to be displayed to the pixel point corresponding to the phase plane, correcting each frame of image, and storing each frame of image after correction for display.
For example, as shown in fig. 6, if the spiral section is left-turn, the actual display phase of the pixel is located at the left side of the predicted display phase surface, and at this time, pixel data of each intersection pixel point (X ', Y ', Z ') of the spiral section and the holographic image 5 to be displayed is assigned to the pixel point (X, Y, Z) corresponding to the phase surface, which corresponds to moving each pixel of the spiral section to the left side onto the predicted display phase surface, such a leftward movement compensates for the right-turn distortion of the spiral section, so that the holographic image without distortion is finally displayed.
The pixel data here includes both shape information and color information of the displayed image.
Further, in the case of right-hand twist, that is, if the flat display source rotates counterclockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, the mapping relationship between the pixels between the phase plane and the spiral tangential plane is determined according to the following relationship:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the pixel points of the phase plane, (X ', Y ', Z ') is the coordinates of the pixel points of the spiral section, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the scanning time of the pixels of the rows (also can be called as the time difference of the display of the pixels of the two adjacent rows), v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source. According to the relation, the mapping relation of pixels between the phase surface and the spiral tangent plane is determined, and according to the mapping relation, pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the pixel point corresponding to the phase surface.
Further, in the case of left-hand twisting, or the like, that is, if the flat display source rotates counterclockwise and refreshes line by line from top to bottom or rotates clockwise and refreshes line by line from bottom to top, the mapping relationship between the pixels between the phase plane and the spiral tangential plane is determined according to the following relationship:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source. According to the relation, the mapping relation of pixels between the phase surface and the spiral tangent plane is determined, and according to the mapping relation, pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the pixel point corresponding to the phase surface.
In a second aspect, the present invention provides a holographic display device for use with a flat panel display source rotatable about an axis, comprising:
the spiral section determining unit is used for determining the spiral section of the phase surface of the plane display source according to the angular speed and the line scanning time of the plane display source;
and the frame data determining unit is used for assigning pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed to the corresponding pixel point of the phase plane according to the mapping relation of the pixels between the phase plane and the spiral tangent plane, and taking the assigned phase plane as display frame data.
The principle and effect of the holographic display device used for implementing the holographic display method are referred to above method embodiments, and are not described herein.
Further, if the flat display source rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, determining a mapping relation of pixels between the phase plane and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
Further, if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining a mapping relation of pixels between the phase plane and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
In addition to compensation by means of the algorithm described above, structural compensation may be used to eliminate delay skew, as described in detail below.
In a third aspect, the present invention provides a holographic display device, including a display screen mounting frame rotatably disposed around an axis, where a curved display screen is fixedly connected to the display screen mounting frame, and a spiral display surface of the curved display screen is determined according to an angular speed and a line scanning time of rotation of the curved display screen, where the spiral display surface is used to eliminate delay distortion of holographic display.
Specifically, according to the angular speed of rotation of the curved display screen and the line scanning time, determining a spiral tangent plane of the phase surface of the planar display source, and taking the conjugate surface of the spiral tangent plane as the spiral display surface of the curved display screen.
Further, if the curved display screen rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, after distortion, the phase surface is:
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
to eliminate the distortion, a curved display screen is required to be inversely distorted, i.e., a curved surface conjugated to the distortion is used to counteract the distortion, and the conjugated curved surface is the desired spiral display surface, which can be determined according to the following relation:
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X ', Y ', Z ') is the coordinate of the pixel point of the spiral display surface, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the curved display screen, alpha is the phase angle, omega is the angular speed of the curved display screen, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the curved display screen.
Further, if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, after distortion, the phase surface is:
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
to eliminate the distortion, a curved display screen is required to be inversely distorted, i.e., a curved surface conjugated to the distortion is used to counteract the distortion, and the conjugated curved surface is the desired spiral display surface, which can be determined according to the following relation:
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X ', Y ', Z ') is the coordinate of the pixel point of the spiral display surface, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the curved display screen, alpha is the phase angle, omega is the angular speed of the curved display screen, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the curved display screen.
As one implementation, as shown in fig. 7, the holographic display device includes a housing 10, the housing 10 being, for example and without limitation, a cylindrical structure. A driving PCB 9 is arranged in the housing 10, the driving PCB 9 is connected to a motor 7 through a rotating conductive ring 8, and the driving PCB 9 is at least used for driving the motor 7 to rotate. A bottom cover 6 is arranged below the motor 7, and the bottom cover 6 is fixedly connected with the bottom opening of the shell 10. The spiral surface support 11 is arranged outside the shell 10, the spiral surface support 11 is provided with at least two connecting rods 12 which are vertically arranged, and the spiral direction of the connecting rods 12 can be determined according to the relation formula for determining the spiral display surface in the above embodiment. The flexible display 13 is connected between the two connecting rods 12, and the flexible display 13 is, for example and without limitation, a flexible OLED, and the two connecting rods 12 are used for limiting the flexible display 13 to maintain a certain distortion so that the display surface is the spiral display surface.
In a fourth aspect, the present invention provides a readable storage medium storing a computer program which when executed implements the holographic display method described above.
It is to be understood that the above references to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are for convenience in describing the present invention and simplifying the description only, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but also covers other technical solutions which may be formed by any combination of the features described above or their equivalents without departing from the inventive concept. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. A holographic display method for a flat panel display source rotating about an axis, comprising the steps of:
determining a spiral section of a phase surface of the planar display source according to the angular speed and the line scanning time of the planar display source;
according to the mapping relation of pixels between the phase surface and the spiral tangent plane, pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the corresponding pixel point of the phase surface, and the assigned phase surface is used as display frame data;
if the flat display source rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, determining the mapping relation of pixels between the phase surface and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
2. A holographic display method for a flat panel display source rotating about an axis, comprising the steps of:
determining a spiral section of a phase surface of the planar display source according to the angular speed and the line scanning time of the planar display source;
according to the mapping relation of pixels between the phase surface and the spiral tangent plane, pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed are assigned to the corresponding pixel point of the phase surface, and the assigned phase surface is used as display frame data;
if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining the mapping relation of pixels between the phase surface and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
3. A holographic display for a flat panel display source rotating about an axis, comprising:
the spiral section determining unit is used for determining the spiral section of the phase surface of the plane display source according to the angular speed and the line scanning time of the plane display source;
the frame data determining unit is used for assigning pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed to the corresponding pixel point of the phase plane according to the mapping relation of pixels between the phase plane and the spiral tangent plane, and taking the assigned phase plane as display frame data;
if the flat display source rotates anticlockwise and refreshes from bottom to top line by line or rotates clockwise and refreshes from top to bottom line by line, determining the mapping relation of pixels between the phase surface and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
4. A holographic display for a flat panel display source rotating about an axis, comprising:
the spiral section determining unit is used for determining the spiral section of the phase surface of the plane display source according to the angular speed and the line scanning time of the plane display source;
the frame data determining unit is used for assigning pixel data of each intersection pixel point of the spiral tangent plane and the holographic image to be displayed to the corresponding pixel point of the phase plane according to the mapping relation of pixels between the phase plane and the spiral tangent plane, and taking the assigned phase plane as display frame data;
if the flat display source rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining the mapping relation of pixels between the phase surface and the spiral tangent plane according to the following relation:
X＝u·cosα
Y＝u·sinα
Z＝v
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X, Y, Z) is the coordinates of the phase plane pixel point, (X ', Y ', Z ') is the coordinates of the spiral tangent plane pixel point, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the plane display source, alpha is the phase angle, omega is the angular velocity of the plane display source, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the plane display source.
5. The holographic display device is characterized by comprising a display screen mounting frame which is rotatably arranged around a shaft, wherein a curved display screen is fixedly connected to the display screen mounting frame, and a spiral display surface of the curved display screen is determined according to the rotational angular speed and the line scanning time of the curved display screen, and the spiral display surface is used for eliminating delay distortion of holographic display;
if the curved display screen rotates anticlockwise and is refreshed line by line from bottom to top or rotates clockwise and is refreshed line by line from top to bottom, determining the spiral display surface according to the following relation:
X'＝u·cos[α-(v-1)ωt]
Y'＝u·sin[α-(v-1)ωt]
Z'＝v
wherein (X ', Y ', Z ') is the coordinate of the pixel point of the spiral display surface, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the curved display screen, alpha is the phase angle, omega is the angular speed of the curved display screen, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the curved display screen.
6. The holographic display device is characterized by comprising a display screen mounting frame which is rotatably arranged around a shaft, wherein a curved display screen is fixedly connected to the display screen mounting frame, and a spiral display surface of the curved display screen is determined according to the rotational angular speed and the line scanning time of the curved display screen, and the spiral display surface is used for eliminating delay distortion of holographic display;
if the curved display screen rotates anticlockwise and refreshes from top to bottom line by line or rotates clockwise and refreshes from bottom to top line by line, determining the spiral display surface according to the following relation:
X'＝u·cos[α+(v-1)ωt]
Y'＝u·sin[α+(v-1)ωt]
Z'＝v
wherein (X ', Y ', Z ') is the coordinate of the pixel point of the spiral display surface, u is more than or equal to 0 and less than or equal to R, R is the rotation radius of the curved display screen, alpha is the phase angle, omega is the angular speed of the curved display screen, t is the line pixel scanning time, v is more than or equal to 0 and less than or equal to H, and H is the height of the curved display screen.
7. A readable storage medium storing a computer program, characterized in that the computer program, when executed, implements the holographic display method of any of claims 1-2.
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| WO2009143607A1 (en) * | 2008-05-26 | 2009-12-03 | Colin Gavrilenco | Display device for displaying cross -sectional representations of an object |
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| JP2013055695A (en) * | 2012-11-30 | 2013-03-21 | Nec Casio Mobile Communications Ltd | Electronic apparatus and program |
| CN106441242A (en) * | 2016-08-27 | 2017-02-22 | 青岛秀山移动测量有限公司 | Interactive plotting method based on laser-point cloud and panorama image |
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