CN100401132C - Method for correcting geometric distortion of projected image on curved curtain - Google Patents
Method for correcting geometric distortion of projected image on curved curtain Download PDFInfo
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- CN100401132C CN100401132C CNB2004100181018A CN200410018101A CN100401132C CN 100401132 C CN100401132 C CN 100401132C CN B2004100181018 A CNB2004100181018 A CN B2004100181018A CN 200410018101 A CN200410018101 A CN 200410018101A CN 100401132 C CN100401132 C CN 100401132C
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- curved surface
- surface curtain
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- projection
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Abstract
The present invention relates to a method for correcting the geometric distortion of projected images on curved surface screens. In the method, a curved surface screen is provided with position points which are uniformly ranged and distributed; a center position point is established; a projector is used for projecting a cross line to the curved surface screen for causing the center point of the cross line to align the center position point; the projector is used for projecting a plurality of horizontal lines to the curved surface screen for causing all of the horizontal lines to coincide with the position point horizontally ranged on the curved surface screen; the projector is used for projecting a plurality of vertical lines to the curved surface screen for causing all of the vertical lines to be coincides with the position points vertically ranged on the curved surface screen. The method can perfectly correct nonlinear distortion pictures of images projected on curved surface screens by projectors; images on curved surface screens have vivid effects; observers can feel virtual stereoscopic scenes permeating at the periphery, are in the true world as though and have a strong immersing feeling only by wearing stereoscopic eyeglasses on heads.
Description
Technical field
The present invention relates to the Flame Image Process of three-dimensional animation, more specifically refer to a kind of antidote projected image geometric distortion on the curved surface curtain.
Background technology
Three-dimensional animation is as one of simulating reality life scene image display technique, it is a comparatively high-end technology, three-dimensional animation is different with common three-dimensional animation, when display effect was true to nature, display technique was also comparatively complicated, by multi-channel video output and programming, please consult shown in Figure 1 earlier, through boxcar 1, stereo projector 2, screen 3 is a curved surface curtain, and the people who watches can watch the animation effect with strong depth of field with going up special 3 D stereo glasses (polariscope).Three-dimensional animation is applicable to urban design, garden planning and achievement report as a high-end image shows.
In the application of vision simulation, simulating reality life, triple channel post curtain projection display system is the display mode that present people generally adopt, and screen adopts the curved projection surfaces curtain.Its advantage is the observation visual field that can provide bigger, and the horizontal field of view angle is 150 ° usually, 40 ° at vertical field of view angle, and the brightness of image reaches more than the 2000ANSI lumen and resolution is 1280 * 1024.Can immerse wherein for tens people, the user wears anaglyph spectacles can experience virtual three-dimensional scene around spreading in, places oneself in the midst of the real world seemingly, has stronger feeling of immersion.Difficulty is big but the hyperchannel Projection Display possesses skills, and for example, screen is the curved surface curtain owing to what adopt, and the picture that is projected on the curtain can produce geometric distortion.All projector all are the screen at the plane when design, please respectively in conjunction with Fig. 2, Fig. 3.When such projector image projection to the curved surface curtain, image will metamorphopsic distortion, this phenomenon is referred to as nonlinear distortion.In order on the curved surface curtain, to obtain image display effect true to nature, must proofread and correct the image of geometric distortion.
Summary of the invention
The objective of the invention is in the above-mentioned three-dimensional animation, the shortcoming of the nonlinear distortion of the projected image that occurs on the curved surface curtain provides a kind of antidote to projected image geometric distortion on the curved surface curtain.
To achieve these goals, the present invention adopts following technical scheme,
This antidote to projected image geometric distortion on the curved surface curtain may further comprise the steps:
A lays evenly distributed anchor point, and establishes a centre spot on the curved surface curtain;
B to curved surface curtain projection cross curve, makes the central point centering adjustment anchor point of cross curve with projector;
C, with projector to the several horizontal lines of curved surface curtain projection, make each root horizontal line all with the curved surface curtain on horizontal anchor point coincide;
D, with projector to the several perpendicular line of curved surface curtain projection, make each root perpendicular line all with the curved surface curtain on the anchor point of homeotropic alignment coincide;
E, by to all vertical, horizontal adjustment, finish till the anchor point on wired and the curved surface curtain coincide.
Among the described step a, on the curved surface curtain, lay evenly distributed anchor point and can adopt the projector projection, or directly on the curved surface curtain, lay in advance.
Among the described step b,, vertical, four end points of level and the anchor point of cross curve matched when curved surface curtain projection cross curve makes its central point centering adjustment anchor point.
Among the described step c, adjusting projector in each root horizontal line of curved surface curtain projection and the horizontal anchor point on the curved surface curtain coincide process, further may further comprise the steps:
C1 adjusts to the level and the radian of the central horizontal line of curved surface curtain projection projector earlier;
C2 carries out horizontal adjustment to projector to other horizontal line of curved surface curtain projection then;
C3 is arc horizontal line to projector to the projection of curved surface curtain again and adjusts.
In the described steps d, adjust projector to each root perpendicular line of curved surface curtain projection all with the curved surface curtain on the anchor point of homeotropic alignment coincide in the process, further may further comprise the steps:
D1 adjusts to the verticality and the radian of the central vertical line of curved surface curtain projection projector earlier;
D2 vertically adjusts to other perpendicular line of curved surface curtain projection projector then;
D3 is arc perpendicular line to projector to the projection of curved surface curtain again and adjusts.
In the technical scheme of invention, on the curved surface curtain, lay evenly distributed anchor point earlier, and establish a centre spot; Use projector to curved surface curtain projection cross curve then, make the central point centering adjustment anchor point of cross curve; Use projector to the several horizontal lines of curved surface curtain projection again, make each root horizontal line all with the curved surface curtain on horizontal anchor point coincide; Use projector to the several perpendicular line of curved surface curtain projection and then, make each root perpendicular line all with the curved surface curtain on the anchor point of homeotropic alignment coincide; At last, by to all vertical, horizontal adjustment, finish till the anchor point on wired and the curved surface curtain coincide.Behind above-mentioned antidote, projector projects can be corrected preferably to the nonlinear distortion picture that image produced of curved surface curtain, image effect on the curved surface curtain is true to nature, the observer wears anaglyph spectacles can experience virtual three-dimensional scene around spreading in, place oneself in the midst of the real world seemingly, have stronger feeling of immersion.
Description of drawings
Fig. 1 is a three-dimensional animation projection theory synoptic diagram.
Fig. 2 is the perspective view of screen when being the plane curtain.
Fig. 3 is the perspective view of screen when being the curved surface curtain.
Fig. 4 is an antidote schematic flow sheet of the present invention.
Fig. 5 is in the method for the present invention, lays evenly distributed anchor point synoptic diagram on the curved surface curtain.
Fig. 6-Fig. 8 is respectively in the method for the present invention, and horizontal line is corrected synoptic diagram.
Fig. 9-Figure 10 is respectively in the method for the present invention, and perpendicular line is corrected synoptic diagram.
Figure 11 is the synoptic diagram after finishing vertical, horizontal line and correcting.
Embodiment
See also shown in Figure 4,
The present invention may further comprise the steps the antidote of projected image geometric distortion on the curved surface curtain:
A lays anchor point
On the curved surface curtain, lay evenly distributed anchor point, and establish a centre spot;
B, cross curve is corrected
To curved surface curtain projection cross curve, make the central point centering adjustment anchor point of cross curve with projector;
C, horizontal line is corrected
With projector to the several horizontal lines of curved surface curtain projection, make each root horizontal line all with the curved surface curtain on horizontal anchor point coincide;
D, perpendicular line is corrected
With projector to the several perpendicular line of curved surface curtain projection, make each root perpendicular line all with the curved surface curtain on the anchor point of homeotropic alignment coincide.
E corrects and finishes
By to all vertical, horizontal adjustment, finish the anchor point on wired and the curved surface curtain coincide till (please earlier referring to Figure 11).
Please successively in conjunction with shown in Fig. 5-8,
Among the described step a, on the curved surface curtain, lay evenly distributed anchor point and can adopt the projector projection, or directly on the curved surface curtain, lay in advance.Also can adopt the laser positioning instrument to raise the site of adjusting at the curved surface curtain.
Among the described step b,, vertical, four end points of level and the anchor point of cross curve matched when curved surface curtain projection cross curve makes its central point centering adjustment anchor point.
Among the described step c, adjusting projector in each root horizontal line of curved surface curtain projection and the horizontal anchor point on the curved surface curtain coincide process, further may further comprise the steps:
C1 adjusts to the level and the radian of the central horizontal line of curved surface curtain projection projector earlier, makes crooked horizontal line become real horizontal line;
C2 carries out horizontal adjustment to projector to other horizontal line of curved surface curtain projection then;
C3 is arc horizontal line to projector to the projection of curved surface curtain again and adjusts, and makes the horizontal line of up-bow or following bow become real horizontal linear.
See also Fig. 9, shown in Figure 10 again,
In the described steps d, adjust projector to each root perpendicular line of curved surface curtain projection all with the curved surface curtain on the anchor point of homeotropic alignment coincide in the process, further may further comprise the steps:
D1 adjusts to the verticality and the radian of the central vertical line of curved surface curtain projection projector earlier;
D2 vertically adjusts to other perpendicular line of curved surface curtain projection projector then;
D3 is arc perpendicular line to projector to the projection of curved surface curtain again and adjusts, and makes the perpendicular line of right bow or left side bow become real vertical line.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (4)
1. antidote to projected image geometric distortion on the curved surface curtain is characterized in that this antidote may further comprise the steps:
A lays evenly distributed anchor point, and establishes a centre spot on the curved surface curtain;
B to curved surface curtain projection cross curve, makes the central point centering adjustment anchor point of cross curve with projector; When curved surface curtain projection cross curve makes its central point centering adjustment anchor point, vertical, four end points of level and the anchor point of cross curve matched;
C, with projector to the several horizontal lines of curved surface curtain projection, make each root horizontal line all with the curved surface curtain on horizontal anchor point coincide;
D, with projector to the several perpendicular line of curved surface curtain projection, make each root perpendicular line all with the curved surface curtain on the anchor point of homeotropic alignment coincide;
E, by to all vertical, horizontal adjustment, finish till the anchor point on wired and the curved surface curtain coincide.
2. the antidote of projected image geometric distortion is characterized in that on the curved surface curtain as claimed in claim 1,
Among the described step a, on the curved surface curtain, lay evenly distributed anchor point and can adopt the projector projection, or directly on the curved surface curtain, lay in advance.
3. the antidote of projected image geometric distortion is characterized in that on the curved surface curtain as claimed in claim 1,
Among the described step c, adjusting projector in each root horizontal line of curved surface curtain projection and the horizontal anchor point on the curved surface curtain coincide process, further may further comprise the steps:
C1 adjusts to the level and the radian of the central horizontal line of curved surface curtain projection projector earlier;
C2 carries out horizontal adjustment to projector to other horizontal line of curved surface curtain projection then;
C3 is arc horizontal line to projector to the projection of curved surface curtain again and adjusts.
4. the antidote of projected image geometric distortion is characterized in that on the curved surface curtain as claimed in claim 1,
In the described steps d, adjust projector to each root perpendicular line of curved surface curtain projection all with the curved surface curtain on the anchor point of homeotropic alignment coincide in the process, further may further comprise the steps:
D1 adjusts to the verticality and the radian of the central vertical line of curved surface curtain projection projector earlier;
D2 vertically adjusts to other perpendicular line of curved surface curtain projection projector then;
D3 is arc perpendicular line to projector to the projection of curved surface curtain again and adjusts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100181018A CN100401132C (en) | 2004-04-30 | 2004-04-30 | Method for correcting geometric distortion of projected image on curved curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100181018A CN100401132C (en) | 2004-04-30 | 2004-04-30 | Method for correcting geometric distortion of projected image on curved curtain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690770A CN1690770A (en) | 2005-11-02 |
| CN100401132C true CN100401132C (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100181018A Expired - Fee Related CN100401132C (en) | 2004-04-30 | 2004-04-30 | Method for correcting geometric distortion of projected image on curved curtain |
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| CN (1) | CN100401132C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1976482B (en) * | 2005-11-28 | 2010-09-08 | 上海科技馆 | Irregular stereo-curtain projecting method |
| CN101385047B (en) * | 2006-02-20 | 2011-11-23 | 松下电工株式会社 | Image signal processing apparatus and virtual reality creating system |
| CN102238396B (en) * | 2010-04-28 | 2014-05-07 | 周修平 | Image converting method, imaging method and system of stereoscopic vision |
| CN102385238B (en) * | 2010-09-03 | 2015-07-01 | 深圳华强数码电影有限公司 | Implementation method and system for projecting and showing of ball screen |
| CN103149786B (en) * | 2013-03-29 | 2016-08-03 | 北京臻迪科技股份有限公司 | Panoramic screen, full-view screen system and operational approach thereof |
| CN103995417B (en) * | 2014-05-27 | 2016-02-17 | 海信集团有限公司 | Optical projection system |
| CN105791786A (en) * | 2016-03-09 | 2016-07-20 | 上海易景信息科技有限公司 | System and method for automatically adjusting smoothness of projection surface |
| CN105787980B (en) * | 2016-03-17 | 2018-12-25 | 北京牡丹视源电子有限责任公司 | A kind of detection virtual reality shows the method and system of equipment field angle |
| CN110262176B (en) * | 2019-06-27 | 2021-06-08 | 成都菲斯特科技有限公司 | Projection screen installation system and installation method |
| CN111707456A (en) * | 2020-08-20 | 2020-09-25 | 歌尔光学科技有限公司 | Optical machine definition testing method and testing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382493A (en) * | 1989-08-28 | 1991-04-08 | Sega Enterp Ltd | Video game machine |
| JP2002148711A (en) * | 2000-11-08 | 2002-05-22 | Matsushita Electric Works Ltd | Spherical wide field angle video display device |
| JP2003009039A (en) * | 2001-06-27 | 2003-01-10 | Namco Ltd | Image display device, image display method, information storage medium, and image display program |
-
2004
- 2004-04-30 CN CNB2004100181018A patent/CN100401132C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382493A (en) * | 1989-08-28 | 1991-04-08 | Sega Enterp Ltd | Video game machine |
| JP2002148711A (en) * | 2000-11-08 | 2002-05-22 | Matsushita Electric Works Ltd | Spherical wide field angle video display device |
| JP2003009039A (en) * | 2001-06-27 | 2003-01-10 | Namco Ltd | Image display device, image display method, information storage medium, and image display program |
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| CN1690770A (en) | 2005-11-02 |
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