CN104519341A - Method for generating integral imaging micropattern array with any inclination angle - Google Patents
Method for generating integral imaging micropattern array with any inclination angle Download PDFInfo
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- CN104519341A CN104519341A CN201510008611.5A CN201510008611A CN104519341A CN 104519341 A CN104519341 A CN 104519341A CN 201510008611 A CN201510008611 A CN 201510008611A CN 104519341 A CN104519341 A CN 104519341A
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Abstract
The invention provides a method for generating an integral imaging micropattern array with any inclination angle. The method comprises two steps that a circular virtual camera array acquires parallax images, and the parallax images are converted into an inclined micropattern array. The method disclosed by the invention realizes direct generation of the micropattern array with any inclination angle, so that a complicated image handling process and a calculating process for a large number of image elements are avoided; furthermore, shot acquired light ray information is completely used; a represented 3D image has a clear edge and does not distort.
Description
Technical field
The present invention relates to integration imaging 3D(three-dimensional) Display Technique, more particularly, the present invention relates to a kind of generation method of the micro-pattern matrix of integration imaging of arbitrary inclination.
Background technology
Integration imaging is a kind of real tri-dimension Display Technique, and beholder can not wearing any helping depending on watching authentic 3D rendering during equipment.Along with the fast development of computer technology, people generally use computer mould to fit the various optical technology of process, and derive Automated library system imaging technique.Automated library system imaging comprises two stages of recording and reconstruction, in the record stage, first microcomputer modelling software is adopted to set up 3D virtual scene, then set up with modeling software the anaglyph that virtual camera array obtains 3D virtual scene, after pixel-map, obtain the film source of integration imaging and micro-pattern matrix.In the display stage, place microlens array in panel surface, and on panel, show micro-pattern matrix to reproduce 3D rendering.
In order to eliminate the Moire fringe in 3D display system, need the microlens array on display floater to tilt an angle.Therefore, micro-pattern matrix panel shown also needs to tilt identical angle.But current Automated library system imaging technique all can only obtain traditional micro-pattern matrix of nothing inclination.By rotating special angle without micro-pattern matrix that tilts and obtaining micro-pattern matrix to all image primitives by after ad hoc fashion arrangement process, adds additional the image processing process to great amount of images unit and computational process, and the light information that can not fully utilize shooting to obtain.
Summary of the invention
The present invention proposes a kind of generation method of the micro-pattern matrix of integration imaging of arbitrary inclination, as shown in Figure 1, the method comprises circular virtual camera array acquisition anaglyph and anaglyph is converted into micro-pattern matrix two steps.
Described circular virtual camera array obtains anaglyph, and adopt convergence type stereoscopic camera structure, all cameras are all arranged in a border circular areas, the position coordinates at border circular areas center be (
x 0,
y 0), diameter is
d, each camera equidistantly arranges in the horizontal and vertical directions, and the spacing of adjacent cameras is
d, each image center is in the same plane, and each camera has common objective point
o, camera array place plane and each camera subject point
othe distance of the reference planes at place is
l, each camera all adopts rectangular projection geometrical model to play up 3D virtual scene.The microlens array parameter adopted when determining that integration imaging shows, lens cells pitch is
p, lens cells focal length is
f, single lens covers display panel pixel quantity and is
r×
r, comprise altogether
m×
nindividual lens cells.
Preferably, do not waste when being converted into micro-pattern matrix and not drop-out to meet anaglyph that virtual camera array plays up, the spacing of adjacent cameras
d, camera place the diameter of border circular areas
d, each camera position coordinates (
x i ,
y j ) meet following formula:
（1）
（2）
（3）
（4）
（5）
Wherein,
gthe distance between microlens array and display floater,
i,
jthe numbering of camera horizontal direction and longitudinal direction in camera array respectively,
i,
jbe all integer, and meet inequality respectively :-
d/ 2≤
i≤
d/ 2 ,-
d/ 2≤
j≤
d/ 2.
Described anaglyph is converted into micro-pattern matrix, and this process is called pixel-map process.
i(
i,
j)
i',
j'
?
irow
jin the anaglyph of row the
i' row
jthe pixel of ' row,
i' (
m,
n) be to tilt in micro-pattern matrix the
mrow
nthe pixel of row, so will obtain pixel-map equation is:
（6）
Several anaglyphs carry out pixel-map, and choosing of anaglyph is determined by the angle of inclination of the best, the sequence number of required anaglyph
i,
jmeet formula:
（7）
（8）
（9）
（10）
（11）
Wherein
aintermediate variable, symbol
xit is right to represent
xround downwards, represent é
xù couple
xround up, and
θit is best angle of inclination.
Preferably, tilted image unit is rotated 180 ° to eliminate degree of depth reversion around its central point, and this processing procedure is attached in pixel-map process, therefore can obtain
m,
n,
i,
j,
i' and
j' between relational expression be:
（12）
（13）
Present invention achieves the micro-pattern matrix directly generating arbitrary inclination, avoid the complicated image processing procedure to great amount of images unit and computational process.And the present invention make use of the captured light information obtained completely, the 3D rendering of reproduction has edge and not distortion clearly.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of the micro-pattern matrix of integration imaging directly generating arbitrary inclination.
Accompanying drawing 2 is the schematic diagram of micro-pattern matrix of tilting.
Shown by reference numeral in above-mentioned accompanying drawing is:
1.3D virtual scene, the 2. plane at camera array impact point place, 3. virtual camera array, 4. parallax image array, 5. circular diagram pixel, 6. tilted image unit, 7. tilt micro-pattern matrix.
Should be appreciated that above-mentioned accompanying drawing just schematically, do not draw in proportion.
Embodiment
The following detailed description of the exemplary embodiments of generation method of micro-pattern matrix utilizing a kind of arbitrary inclination of the present invention, the present invention is further described specifically.What be necessary to herein means out is; following examples are only described further for the present invention; limiting the scope of the invention can not be interpreted as; this art skilled person makes some nonessential improvement and adjustment according to the invention described above content to the present invention, still belongs to protection scope of the present invention.
In this embodiment, in microcomputer modelling software 3DS MAX, set up 3D virtual scene, 3D virtual scene comprises a 3D object " Kung Fu Panda " and a high definition Background.The plane at " Kung Fu Panda " place and the distance of camera array place plane are 1000mm.
According to the optimum configurations camera array of this embodiment integration imaging display system, the parameter of the microlens array used in integration imaging display system is: lens cells pitch is 1.25mm, and lens cells focal length is 3.38mm.The iPad mini 2 that the display floater used in integration imaging display system is produced for Apple, it is of a size of 7.9inch, and resolution is 2046 × 1536, and single Pixel Dimensions is 0.078mm.The present embodiment is assembled to microlens array on iPad mini 2, focusing mode is adopted to reproduce 3D rendering, distance then between microlens array and display floater equals the focal length 3.38mm of single lens unit, and the pixel quantity that single lens unit covers display floater is 16 × 16.According to the parameter of integration imaging display system and formula (1)-(5) this embodiment can determine the parameter of camera array and each camera position (
x i ,
y j ), wherein, camera spacing is 23.1mm, and the diameter of the border circular areas at camera place is 490mm.Play up virtual camera array and after obtaining anaglyph, several anaglyphs are chosen by the angle of inclination of the best and formula (7)-(11), carry out pixel-map according to formula (6), (11) and (12) again, micro-pattern matrix of arbitrary inclination can be obtained.Have successfully been obtained 20 ° in the present embodiment, 40 °, micro-pattern matrix at the angle of inclination of 60 ° and 80 °, wherein the micro-pattern matrix of the inclination of 20 ° as shown in Figure 2.In this embodiment integration imaging display system, according to the angle of inclination of the best of microlens array generate corresponding tilt micro-pattern matrix, and be placed in iPad mini 2 and show, the 3D rendering of reproduction has edge and not distortion clearly.
So far, the method for micro-pattern matrix of a kind of direct generation arbitrary inclination of the present invention, avoids the complicated image processing procedure to great amount of images unit and computational process.And the present invention make use of the captured light information obtained completely, the 3D rendering of reproduction has edge and not distortion clearly.
Claims (1)
1. a generation method for the micro-pattern matrix of the integration imaging of arbitrary inclination, is characterized in that, the method comprises circular virtual camera array acquisition anaglyph and anaglyph is converted into micro-pattern matrix two steps; Described circular virtual camera array obtains anaglyph, and it is characterized in that, all cameras are all arranged on a border circular areas, the position coordinates at border circular areas center be (
x 0,
y 0), diameter is
d, and equidistant in the horizontal and vertical directions
darrangement, each image center is in the same plane and respectively have common objective point
o, camera array place plane and impact point
othe distance of the reference planes at place is
l, all adopt rectangular projection geometrical model to play up 3D virtual scene, the microlens array parameter adopted when determining that integration imaging shows, lens cells pitch is
p, lens cells focal length is
f, single lens covers display panel pixel quantity and is
r×
r, comprise altogether
m×
nindividual lens cells, then camera spacing
d, border circular areas diameter
d, each camera position (
x i ,
y j ) meet following formula:
d=(
p×
l)/ (
r×
g),
d=
× (
r-1) ×
d,
x i =
x 0+
i×
d,
y i =
y 0+
i×
d, (
x i -
x 0)
2+ (
y j -
y 0)
2≤ 1/4 × d
2, wherein,
git is the distance between microlens array and display floater;
i,
jbe the numbering of camera horizontal direction and longitudinal direction in camera array respectively, and be all integer, and meet inequality :-
d/ 2≤
i≤
d/ 2 ,-
d/ 2≤
j≤
d/ 2; Described anaglyph is converted into micro-pattern matrix, it is characterized in that,
i(
i,
j)
i',
j'
?
irow
jin the anaglyph of row the
i' row
jthe pixel of ' row,
i' (
m,
n) be to tilt in micro-pattern matrix the
mrow
nthe pixel of row, so will obtain pixel-map equation is:
i' (
m,
n)=
i(
i,
j)
i',
j'
, several anaglyphs carry out pixel-map, the sequence number of required anaglyph
i,
jmeet formula:
,
，
,
,
, wherein
aintermediate variable, symbol
xrepresentative rounds downwards, é
xù representative rounds up, and
θbe best angle of inclination, the processing procedure eliminating degree of depth reversion be attached in pixel-map, therefore can obtain
m,
n,
i,
j,
i 'with
j 'between relational expression be:
,
.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106254859A (en) * | 2016-01-18 | 2016-12-21 | 北京智谷睿拓技术服务有限公司 | Light field display control method and device, light field display device |
| CN106254858A (en) * | 2015-12-31 | 2016-12-21 | 北京智谷睿拓技术服务有限公司 | Light field display control method and device, light field display device |
| CN108965853A (en) * | 2018-08-15 | 2018-12-07 | 张家港康得新光电材料有限公司 | A kind of integration imaging 3 D displaying method, device, equipment and storage medium |
| CN111263132A (en) * | 2020-02-24 | 2020-06-09 | 北京航空航天大学 | Integrated imaging ring sector micro-image array generation method |
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2015
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| JPH1056654A (en) * | 1996-08-13 | 1998-02-24 | Fujitsu Ltd | Stereoscopic display method and device therefor |
| US20020114077A1 (en) * | 2001-01-23 | 2002-08-22 | Bahram Javidi | Integral three-dimensional imaging with digital reconstruction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106254858A (en) * | 2015-12-31 | 2016-12-21 | 北京智谷睿拓技术服务有限公司 | Light field display control method and device, light field display device |
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| CN111263132A (en) * | 2020-02-24 | 2020-06-09 | 北京航空航天大学 | Integrated imaging ring sector micro-image array generation method |
| CN111263132B (en) * | 2020-02-24 | 2021-03-19 | 北京航空航天大学 | Integrated imaging ring sector micro-image array generation method |
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