CN105845050A - Nakedness-eye holographic display device based on persistence-of-vision effect and method for nakedness-eye holographic display device - Google Patents
Nakedness-eye holographic display device based on persistence-of-vision effect and method for nakedness-eye holographic display device Download PDFInfo
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- CN105845050A CN105845050A CN201610451278.XA CN201610451278A CN105845050A CN 105845050 A CN105845050 A CN 105845050A CN 201610451278 A CN201610451278 A CN 201610451278A CN 105845050 A CN105845050 A CN 105845050A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
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- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention discloses a nakedness-eye holographic display device based on a persistence-of-vision effect. The nakedness-eye holographic display device comprises a plurality of LED (Light Emitting Diode) lamp strips and a rotating disk, wherein the inner ends of the LED lamp strips are fixedly connected with the rotating disk; the LED lamp strips are uniformly distributed along a rotating center of the rotating disk and comprise lamp poles and RGB (Red, Green and Blue) lamp beads; the RGB lamp beads are linearly fixed on the lamp poles. A display method of the nakedness-eye holographic display device comprises the following steps in sequence: determining a display area and resolution; calculating a rotation period; calculating refresh time; displaying picture data processing. According to the nakedness-eye holographic display device disclosed by the invention, by using the principle of point-into-line and line-into-plane, the RGB lamp beads are arranged in a line form and move according to certain trajectory to form a trajectory plane; the picture can be displayed according to pixel points (the RGB lamp beads) corresponding to a lightening trajectory plane required by the picture; due to the motion of the lamp strips, a realistic background can be transmitted through the trajectory plane of lamp strip motion, and a display picture theme is displayed in the realistic environment in a floating way.
Description
Technical field
The present invention relates to a kind of LED and show field, particularly relating to a kind of view-based access control model, to persist the bore hole of effect complete
Breath display device and method.
Background technology
Due to the development of LED technology, and distinctive advantage, low cost, life-span length, highly high,
LED is widely used in the aspects such as illumination, display.
In terms of light-emitting diode display, current domestic existing light-emitting diode display, is based on plane, by multi-color lamp
Pearl, i.e. tri-LED of RGB concentrate on a closing, arrange by matrix form, by line by line or interlacing is swept
The form retouched, shows picture.It is mainly used in giant display, outdoor advertising etc..
Along with the development of 3D technology, mainly by principle of parallax, when beholder watches picture, as long as carrying
The two a series of paintings images somewhat staggered for camera site, watch for right and left eyes respectively, cause the difference of the depth of field, just
It can be seen that one group has relief picture.The existing method realizing principle of parallax mainly has color separation, divides
Light, timesharing and grating etc..
Existing 3D Display Technique, by being then based on plane, is arranged in a matrix lamp bead in plane, display
Theme and background are placed in same plane, and the theme of display cannot be completely disposed at the background of reality, namely
Saying original 3D Display Technique, have display background all the time, display background is the background of former video pictures, and not
It it is the background of a kind of reality residing for display.
Summary of the invention
The purpose of the present invention is that provides a kind of view-based access control model to persist the naked of effect to solve the problems referred to above
The holographic display packing of eye.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of view-based access control model persists the bore hole holographic display of effect, including multiple LED lamp bar and rotating disk,
Inner and the described rotating disk of multiple described LED lamp bar is fixing to be connected, and multiple described LED lamp bar are along described rotation
The center of rotation of rotating disk is uniformly distributed, and described LED lamp bar includes lamp stand and RGB lamp bead, multiple described RGB
Lamp bead is that line style is fixed on described lamp stand.
Specifically, described rotating disk arranging speed probe, the front side of described LED lamp bar is provided with photosensitive
Sensor.
The display packing of the bore hole holographic display of effect is persisted based on above-mentioned a kind of view-based access control model, including
Following step:
(1) viewing area and resolution are determined: determine the length of LED lamp bar, and be mounted to rotating disk
On；
(2) rotation period is calculated: calculate rotating disk according to the length of LED lamp bar with the quantity of LED lamp bar
Rotation period；
(3) refresh time is calculated: calculate RGB lamp bead according to the length of LED lamp bar with the quantity of LED lamp bar
Refreshing frequency；
(4) display picture data processes: obtain the half-tone information needed for each RGB lamp bead, and according to acquisition
Information light RGB lamp bead and realize picture and show.
Specifically, in above-mentioned steps (1), the computing formula of viewing area and resolution is:
Viewing area: S=π m2
Resolution: the quantity of P=LED equiarm × (360 °/need to refresh the minimum angles of arm data rotation)
In formula: m is the length of LED lamp bar, and in LED lamp bar, the distributive law of RGB lamp bead is n/ rice；
Specifically, in above-mentioned steps (2), the computational methods of rotation period are:
Forming the rotational angle of an each LED lamp bar of width picture: α=360/N, unit is degree
Rotating speed:Unit is revolutions per second；
In formula: 1/24 produces the maximum duration of persistence of vision for human eye, and N is lamp bar equally distributed in being turned plane
Number.
Specifically, the computational methods of the refresh time in above-mentioned steps (3) are:
Determine the number of the arrangement of RGB lamp bead on the circular arc at the maximum line velocity of LED lamp bar:
Refresh time is:Unit is the second；
In formula: r is the diameter of RGB lamp bead.
Specifically, the method that in above-mentioned steps (4), picture data processes is:
A: by chrominance information acquisition gray value:
Obtain formula: Gray=R × 0.299+G × 0.587+B × 0.114
After extracting gray value, calculate three RGB gray values of RGB lamp bead at each pixel；
B: determine each lamp bead gray scale display information:
Determine the gray scale of each pixel in display picture, i.e. corresponding rectangular coordinate (x, y),
Being converted by coordinate system, (x y) and turns between the polar coordinate (ρ, θ) of lamp bar the rectangular coordinate of acquisition picture
Change relation:
The required angle rotated of size of C: acquisition one RGB lamp bead of displacement:
Further, obtain rotating disk by described speed probe and revolve the time T turning around required1, obtain and rotate
The time T of minimum angles2, controlling RGB lamp bead and refresh, its refreshing frequency is:And by described
Light sensor detects its refreshing frequency.
The beneficial effects of the present invention is:
A kind of view-based access control model of the present invention persists the bore hole holographic display of effect and method utilize " the point is moved into a line,
Line moves into face " principle, RGB lamp bead is arranged in the form of a line, and according to certain track motion formation one
Individual track plane, according to the phase vegetarian refreshments (RGB lamp bead) lighted needed for picture corresponding to track plane, it is possible to display picture
Face, by then passing through the motion of lamp bar, the track plane " thoroughly " that the background of reality can be moved by lamp bar out,
The screen theme of display is floated and shows among the environment of reality, and reach the display effect of a kind of 3D.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of view-based access control model of the present invention persists the bore hole holographic display of effect
Figure.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As it is shown in figure 1, a kind of view-based access control model of the present invention persists the bore hole holographic display of effect, including many
Individual LED lamp bar 2 and rotating disk 1, the inner of multiple LED lamp bar 2 is fixing with rotating disk 1 to be connected, multiple
LED lamp bar 2 is uniformly distributed along the center of rotation of rotating disk 1, and LED lamp bar 2 includes lamp stand and RGB lamp bead 3,
Multiple RGB lamp bead 3 are fixed on lamp stand in line style.
Determine viewing area and resolution: determine the length of LED lamp bar, and be mounted in rotating disk；
Viewing area: S=π m2, resolution: P=mn π
In formula, m is the length of LED lamp bar, and in LED lamp bar, the distributive law of RGB lamp bead is n/ rice.
Calculate rotation period: calculate the rotation of rotating disk according to the length of LED lamp bar and the quantity of LED lamp bar
Cycle；
Forming the rotational angle of an each LED lamp bar of width picture: α=360/N, unit is degree
Rotating speed:Unit is revolutions per second；
In formula: 1/24 produces the maximum duration of persistence of vision for human eye.
Calculate refresh time: calculate the brush of RGB lamp bead according to the length of LED lamp bar and the quantity of LED lamp bar
New frequency；
Determine the number of the arrangement of RGB lamp bead on the circular arc at the maximum line velocity of LED lamp bar:
Refresh time is:Unit is the second；
In formula: r is the diameter of RGB lamp bead.
Display picture data processes: obtain the gray scale needed for each RGB lamp bead and chrominance information, and according to obtaining
Information light RGB lamp bead and realize picture and show.
A: by chrominance information acquisition gray value:
Obtain formula: Gray=R × 0.299+G × 0.587+B × 0.114
For avoiding the floating-point operation of low speed, it is carried out integer arithmetic, scale it 1000 times, RGB simultaneously
Generally 8 precision, are therefore 32 integer calculations, it is therefore desirable to add 500 realizations and round up, obtain
Integer calculations formula: Gray=(R × 299+G × 587+B × 144+500)/1000
Carry out mutation, be simplified formula: Gray=(R × 30+G × 59+B × 11+50)/100
After extracting gray value, calculate three RGB gray values of RGB lamp bead at each pixel,
R:G:B ≈ 3:6:1, by controlling each LED current value so that it is meet above formula, can be by every
The chroma data of individual phase vegetarian refreshments can be applied directly in the gradation data of each LED.
In 24 chromatic graph sheets, each phase vegetarian refreshments accounts for 3 byte datas, and RGB respectively accounts for a byte, corresponding
In display gradation data, being also each lamp bead data of accounting for 3 bytes, RGB respectively accounts for a byte.
B: determine the gray scale display information of each lamp bead
Determine the gray scale of each pixel in display picture, i.e. corresponding rectangular coordinate (x, y),
Being converted by coordinate system, (x y) and turns between the polar coordinate (ρ, θ) of lamp bar the rectangular coordinate of acquisition picture
Change relation:
Draw: x=ρ × cos (θ × (2 π/360))
Y=ρ × sin (θ × (2 π/360))
The row-coordinate of display picture each phase vegetarian refreshments in the middle of x: plane coordinate system；Y: aobvious in the middle of plane coordinate system
Show the row coordinate of picture each phase vegetarian refreshments；
The required angle rotated of size of C: acquisition one RGB lamp bead of displacement:
It addition, the structure of LED lamp bar can be the polymorphic structure such as M shape, I shape in the present invention.
Technical scheme is not limited to the restriction of above-mentioned specific embodiment, every technology according to the present invention
The technology deformation that scheme is made, within each falling within protection scope of the present invention.
Claims (8)
1. a view-based access control model persists the bore hole holographic display of effect, it is characterized in that: include multiple LED lamp bar and rotating disk, inner and the described rotating disk of multiple described LED lamp bar is fixing to be connected, multiple described LED lamp bar are uniformly distributed along the center of rotation of described rotating disk, described LED lamp bar includes that lamp stand and RGB lamp bead, multiple described RGB lamp bead are that line style is fixed on described lamp stand.
A kind of view-based access control model the most according to claim 1 persists the bore hole holographic display of effect, it is characterised in that: arranging speed probe in described rotating disk, the front side of described LED lamp bar is provided with light sensor.
3. the display packing of the bore hole holographic display of effect is persisted based on a kind of view-based access control model described in the claims 1 or 2, it is characterised in that: comprise the steps:
(1) viewing area and resolution are determined: determine the length of LED lamp bar, and be mounted in rotating disk；
(2) rotation period is calculated: calculate the rotation period of rotating disk according to the length of LED lamp bar and the quantity of LED lamp bar；
(3) refresh time is calculated: calculate the refreshing frequency of RGB lamp bead according to the length of LED lamp bar and the quantity of LED lamp bar；
(4) display picture data processes: obtain the half-tone information needed for each RGB lamp bead, and lights RGB lamp bead according to the information obtained and realize picture and show.
A kind of view-based access control model the most according to claim 2 persists the display packing of the bore hole holographic display of effect, it is characterised in that: in above-mentioned steps (1), viewing area with the computing formula of resolution is:
Viewing area: S=π m2
Resolution: P=mn π
In formula: m is the length of LED lamp bar, and in LED lamp bar, the distributive law of RGB lamp bead is n/ rice.
A kind of view-based access control model the most according to claim 3 persists the display packing of the bore hole holographic display of effect, it is characterised in that: in above-mentioned steps (2), the computational methods of rotation period are:
Forming the rotational angle of an each LED lamp bar of width picture: α=360/N, unit is degree rotating speed:Unit is revolutions per second；
In formula: 1/24 produces the maximum duration of persistence of vision for human eye, and N is lamp bar number equally distributed in being turned plane.
A kind of view-based access control model the most according to claim 4 persists the display packing of the bore hole holographic display of effect, it is characterised in that: the computational methods of the refresh time in above-mentioned steps (3) are:
Determine the number of the arrangement of RGB lamp bead on the circular arc at the maximum line velocity of LED lamp bar:
Refresh time is:Unit is the second；
In formula: r is the diameter of RGB lamp bead.
A kind of view-based access control model the most according to claim 5 persists the display packing of the bore hole holographic display of effect, it is characterised in that: the method that in above-mentioned steps (4), picture data processes is:
A: by chrominance information acquisition gray value:
Obtain formula: Gray=R × 0.299+G × 0.587+B × 0.114
After extracting gray value, calculate three RGB gray values of RGB lamp bead at each pixel；
B: determine the gray scale display information of each lamp bead
Determine the gray scale of each pixel in display picture, i.e. corresponding rectangular coordinate (x, y),
Converted by coordinate system, obtain picture rectangular coordinate (x, transformational relation y) and between the polar coordinate (ρ, θ) of lamp bar:
Conversion formula is
The required angle rotated of size of C: acquisition one RGB lamp bead of displacement:
。
A kind of view-based access control model the most according to claim 7 persists the display packing of the bore hole holographic display of effect, it is characterised in that: obtain rotating disk by described speed probe and revolve the time T turning around required1, obtain the time T rotating minimum angles2, controlling RGB lamp bead and refresh, its refreshing frequency is:And detect its refreshing frequency by described light sensor.
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| CN107134241A (en) * | 2017-03-30 | 2017-09-05 | 何星 | Colyliform 3D display devices and method |
| CN107527576A (en) * | 2017-08-18 | 2017-12-29 | 深圳市无介质成像***有限公司 | Holographic advertisement machine |
| CN107564444A (en) * | 2017-09-29 | 2018-01-09 | 深圳盟云全息文化有限公司 | Holographic advertisement machine |
| CN107767779A (en) * | 2017-11-21 | 2018-03-06 | 成都炫境科技有限公司 | A kind of double-side display device |
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| CN108735111A (en) * | 2018-06-01 | 2018-11-02 | 刘礼金 | A kind of LED light bar rotational display control system and display methods |
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