CN1976482B - Irregular stereo-curtain projecting method - Google Patents
Irregular stereo-curtain projecting method Download PDFInfo
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- CN1976482B CN1976482B CN2005101108194A CN200510110819A CN1976482B CN 1976482 B CN1976482 B CN 1976482B CN 2005101108194 A CN2005101108194 A CN 2005101108194A CN 200510110819 A CN200510110819 A CN 200510110819A CN 1976482 B CN1976482 B CN 1976482B
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- curved surface
- curtain
- surface curtain
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- projection
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Abstract
A projecting method of irregular stereocurtain includes correcting geometric distortion of display image, eliminating pieces caused by image split joint, compensating hot spot, correcting and compensating color for making image effect on said stereocurtain be as the same as a complete frame of picture.
Description
Technical field
The present invention relates to projecting method, more particularly, the present invention relates to a kind of irregular stereo-curtain projecting method.
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 is true to nature, Display Technique is also comparatively complicated, by multi-channel video output and programming, please consult shown in Figure 1 earlier, through boxcar 100, stereo projector 200, screen 300 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 multichannel 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 projecting apparatus the time all are screens at the plane in design, when such projecting apparatus image projection to the curved surface curtain, image will metamorphopsic distortion, this phenomenon is referred to as nonlinear distortion, referring to figs. 2 and 3 the situation that shows nonlinear distortion.Wherein Fig. 2 shows image demonstration situation in the plane, and Fig. 3 has shown the situation of the distortion that image is taken place when being presented on the curved surface.In order on the curved surface curtain, to obtain image display effect true to nature, must proofread and correct the image of geometric distortion.
In addition, image piece etc. also can influence the picture quality on the curved surface curtain and the effect of virtual three-dimensional scene.The main cause that the image piece produces is owing to adopt multi-section (normally three ones) projecting apparatus to project to jointly on the curved surface curtain at synchronization, therefore each projecting apparatus common picture that forms on the curved surface curtain will certainly produce piece, piece is the bottleneck of restriction three-dimensional animation development, how to eliminate the piece that is produced and is paid close attention to by the insider always.
Summary of the invention
The objective of the invention is in the above-mentioned three-dimensional animation, be prone to the problem of projected image piece on the shortcoming of the nonlinear distortion of the projected image that occurs on the curved surface curtain and the curved surface curtain, a kind of irregular stereo-curtain projecting technology is provided, projected image geometric distortion on the curved surface curtain is corrected and eliminated the piece of three-dimensional animation image.
According to the present invention, a kind of irregular stereo-curtain projecting method is provided, comprise the following steps: to correct the step of display image geometric distortion; The step of the piece that the removal of images splicing causes; The focus compensation process; Colour correction and compensation process.
According to one embodiment of the invention, the step of described rectification display image geometric distortion comprises:
A, on the curved surface curtain, lay evenly distributed anchor point, and establish a centre spot;
B, usefulness projecting apparatus make the central point centring anchor point of cross hairs to curved surface curtain projection cross hairs;
C, with projecting apparatus 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 projecting apparatus to the several vertical lines of curved surface curtain projection, make each root vertical line all with the curved surface curtain on the anchor point of vertical arrangement coincide;
E, by to all vertical, horizontal adjustment, finish institute wired with the curved surface curtain on anchor point identical till.
In described step a, on the curved surface curtain, lay evenly distributed anchor point and can adopt the projecting apparatus projection, or directly on the curved surface curtain, lay in advance.
In described step b,, vertical, four end points of level and the anchor point of cross hairs matched when curved surface curtain projection cross hairs makes its central point centring anchor point.
In described step c, adjusting projecting apparatus 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, elder generation adjust to the level and the radian of the central horizontal line of curved surface curtain projection projecting apparatus;
C2, then projecting apparatus is carried out horizontal adjusting to other horizontal line of curved surface curtain projection;
C3, again projecting apparatus is arc horizontal line to the projection of curved surface curtain and adjusts.
In described steps d, adjust projecting apparatus to each root vertical line of curved surface curtain projection all with the curved surface curtain on the anchor point of vertical arrangement coincide in the process, further may further comprise the steps:
D1, elder generation adjust to the perpendicularity and the radian of the central vertical line of curved surface curtain projection projecting apparatus;
D2, then projecting apparatus is vertically adjusted to other vertical line of curved surface curtain projection;
D3, again projecting apparatus is arc vertical line to the projection of curved surface curtain and adjusts.
According to one embodiment of the invention, the step of the piece that described removal of images splicing causes comprises:
F, image to display is carried out image projection on the curved surface curtain by the array projecting apparatus;
G, eliminate the image geometric distortion of each projecting apparatus on the curved surface curtain respectively;
H, will carry out image overlay, and make each group image at curved surface curtain and two groups of adjacent image overlaids through the array image of eliminating geometric distortion;
The image brightness of i, adjusting overlaid part, a side picture that makes lap is that the gray scale, the opposite side picture that fade out are the gray scale that comes out gradually, and forms image co-registration zone seamless.
In described step g, removal of images geometric distortion is corrected each width of cloth image by the mode that cross hairs is corrected, horizontal line is corrected, vertical line is corrected respectively.
In described step h, three groups of images are carried out image overlay, when three groups of images were carried out image overlay, one group of image, two groups of lap picture materials with adjacent on the curved surface curtain were identical in the middle of making.
In described step I, when regulating the brightness of lap, the brightness that makes the brightness of a side picture be linear attenuation, opposite side picture is linear to be increased.
According to technical scheme of the present invention, by adopting antidote of the present invention, 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, by joining method of the present invention, the array projector projects is eliminated preferably to the piece that is produced between the image of curved surface curtain, formed image effect has solved the bottleneck problem of the evolution of restriction three-dimensional animation effectively as the view picture picture.
Description of drawings
The above and other feature of the present invention, character and advantage will further describe below in conjunction with the accompanying drawings and embodiments, and identical in the accompanying drawings Reference numeral is represented identical feature all the time, wherein,
Fig. 1 is the structure chart of the embodiment of an optical projection system.
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 the flow chart according to the irregular stereo-curtain projecting method of one embodiment of the invention.
Fig. 5 is the flow chart according to the method for the rectification geometric distortion of one embodiment of the invention.
Fig. 6 is in the rectification geometric distortion method of the present invention, lays evenly distributed anchor point schematic diagram on the curved surface curtain.
Fig. 7 is in the rectification geometric distortion method of the present invention, to the schematic diagram of curved surface curtain projection cross hairs.
Fig. 8-Fig. 9 is respectively in the rectification geometric distortion method of the present invention, and horizontal line is corrected schematic diagram.
Figure 10-Figure 11 is respectively in the rectification geometric distortion method of the present invention, and vertical line is corrected schematic diagram.
Figure 12 is the schematic diagram after finishing vertical, horizontal line and correcting.
Figure 13 is the flow chart that splices the method for the piece that causes according to the removal of images of one embodiment of the invention.Embodiment
Further specify technical scheme of the present invention below in conjunction with drawings and Examples.
The purpose of this invention is to provide a kind of irregular stereo-curtain projecting method, show the flow chart of an embodiment of this method with reference to figure 4, it comprises following step:
Correct the step of display image geometric distortion;
The step of the piece that the removal of images splicing causes;
The focus compensation process;
Colour correction and compensation process.
Wherein, the step of correcting display image geometric distortion can further comprise following several treatment steps, shows its flow chart with reference to figure 5:
A, on the curved surface curtain, lay evenly distributed anchor point, and establish a centre spot; On the curved surface curtain, lay evenly distributed anchor point and can adopt the projecting apparatus 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.Fig. 6 shows the schematic diagram of the evenly distributed anchor point of on curved surface curtain laying.
B, usefulness projecting apparatus make the central point centring anchor point of cross hairs to curved surface curtain projection cross hairs; When curved surface curtain projection cross hairs makes its central point centring anchor point, vertical, four end points of level and the anchor point of cross hairs matched.Fig. 7 shows the schematic diagram to curved surface curtain projection cross hairs.
C, with projecting apparatus 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.Adjusting projecting apparatus 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. earlier projecting apparatus is adjusted to the level and the radian of the central horizontal line of curved surface curtain projection, made crooked horizontal line become real horizontal line;
C2. then projecting apparatus is carried out horizontal adjusting to other horizontal line of curved surface curtain projection;
C3. again projecting apparatus is arc horizontal line to the projection of curved surface curtain and adjusts, make the horizontal line of up-bow or following bow become real horizontal linear.
Fig. 8-9 shows the schematic diagram that horizontal line is corrected.
D, with projecting apparatus to the several vertical lines of curved surface curtain projection, make each root vertical line all with the curved surface curtain on the anchor point of vertical arrangement coincide.Adjust projecting apparatus to each root vertical line of curved surface curtain projection all with the curved surface curtain on the anchor point of vertical arrangement coincide in the process, further may further comprise the steps:
D1. earlier projecting apparatus is adjusted to the perpendicularity and the radian of the central vertical line of curved surface curtain projection;
D2. then projecting apparatus is vertically adjusted to other vertical line of curved surface curtain projection;
D3. again projecting apparatus is arc vertical line to the projection of curved surface curtain and adjusts, make the vertical line of right bow or left side bow become real vertical line.
Figure 10-11 shows the schematic diagram that vertical line is corrected.
E, by to all vertical, horizontal adjustment, finish institute wired with the curved surface curtain on anchor point identical till.Figure 12 is the schematic diagram after finishing vertical, horizontal line and correcting.
Wherein, the step of the piece that the removal of images splicing causes can further be decomposed as follows, and Figure 13 is the flow chart that splices the method for the piece that causes according to the removal of images of one embodiment of the invention.
F, image to display is carried out image projection on the curved surface curtain by the array projecting apparatus; In one embodiment, adopt three groups of projecting apparatus that image to display is carried out image projection on the curved surface curtain.
G, eliminate the image geometric distortion of each projecting apparatus on the curved surface curtain respectively.The process of removal of images geometric distortion can be with reference to step recited above.By the mode that cross hairs is corrected, horizontal line is corrected, vertical line is corrected each width of cloth image is corrected respectively.
H, will carry out image overlay, and make each group image at curved surface curtain and two groups of adjacent image overlaids through the array image of eliminating geometric distortion.In one embodiment, three groups of images are carried out image overlay, when three groups of images were carried out image overlay, one group of image, two groups of lap picture materials with adjacent on the curved surface curtain were identical in the middle of making.Two groups of adjacent lap images are not less than 12.5% of each image in three groups of images.
The image brightness of i, adjusting overlaid part, a side picture that makes lap is that the gray scale, the opposite side picture that fade out are the gray scale that comes out gradually, and forms image co-registration zone seamless.When regulating the brightness of lap, the brightness that makes the brightness of a side picture be linear attenuation, opposite side picture is linear to be increased, accomplish consistency until lap and other parts, form an on all four image after three width of cloth image overlay of three groups of projecting apparatus institutes projection.
According to technical scheme of the present invention, by adopting antidote of the present invention, 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, by joining method of the present invention, the array projector projects is eliminated preferably to the piece that is produced between the image of curved surface curtain, formed image effect has solved the bottleneck problem of the evolution of restriction three-dimensional animation effectively as the view picture picture.
Though technical scheme of the present invention is illustrated in conjunction with preferred embodiment; but it should be appreciated by those skilled in the art; various modifications or change for the above embodiments are predictable; this should not be regarded as having exceeded protection scope of the present invention; therefore; protection scope of the present invention is not limited to above-mentioned specifically described embodiment, and should be the most wide in range scope that meets the inventive features that discloses in this place.
Claims (10)
1. an irregular stereo-curtain projecting method is characterized in that, comprises
Correct the step of display image geometric distortion;
The step of the piece that the removal of images splicing causes;
The focus compensation process;
Colour correction and compensation process.
2. irregular stereo-curtain projecting method as claimed in claim 1 is characterized in that, the step of described rectification display image geometric distortion comprises:
A, on the curved surface curtain, lay evenly distributed anchor point, and establish a centre spot;
B, usefulness projecting apparatus make the central point centring anchor point of cross hairs to curved surface curtain projection cross hairs;
C, with projecting apparatus 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 projecting apparatus to the several vertical lines of curved surface curtain projection, make each root vertical line all with the curved surface curtain on the anchor point of vertical arrangement coincide;
E, by to all vertical, horizontal adjustment, finish institute wired with the curved surface curtain on anchor point identical till.
3. as irregular stereo-curtain projecting method as described in the claim 2, it is characterized in that, among the described step a, on the curved surface curtain, lay evenly distributed anchor point and can adopt the projecting apparatus projection, or directly on the curved surface curtain, lay in advance.
4. irregular stereo-curtain projecting method as claimed in claim 2 is characterized in that, among the described step b, when curved surface curtain projection cross hairs makes its central point centring anchor point, vertical, four end points of level and the anchor point of cross hairs is matched.
5. irregular stereo-curtain projecting method as claimed in claim 2, it is characterized in that, among the described step c, adjusting projecting apparatus 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, elder generation adjust to the level and the radian of the central horizontal line of curved surface curtain projection projecting apparatus;
C2, then projecting apparatus is carried out horizontal adjusting to other horizontal line of curved surface curtain projection;
C3, again projecting apparatus is arc horizontal line to the projection of curved surface curtain and adjusts.
6. irregular stereo-curtain projecting method as claimed in claim 2 is characterized in that,
In the described steps d, adjust projecting apparatus to each root vertical line of curved surface curtain projection all with the curved surface curtain on the anchor point of vertical arrangement coincide in the process, further may further comprise the steps:
D1, elder generation adjust to the perpendicularity and the radian of the central vertical line of curved surface curtain projection projecting apparatus;
D2, then projecting apparatus is vertically adjusted to other vertical line of curved surface curtain projection;
D3, again projecting apparatus is arc vertical line to the projection of curved surface curtain and adjusts.
7. irregular stereo-curtain projecting method as claimed in claim 2 is characterized in that, the step of the piece that described removal of images splicing causes comprises:
F, image to display is carried out image projection on the curved surface curtain by the array projecting apparatus;
G, eliminate the image geometric distortion of each projecting apparatus on the curved surface curtain respectively;
H, will carry out image overlay, and make each group image at curved surface curtain and two groups of adjacent image overlaids through the array image of eliminating geometric distortion;
The image brightness of i, adjusting overlaid part, a side picture that makes lap is that the gray scale, the opposite side picture that fade out are the gray scale that comes out gradually, and forms image co-registration zone seamless.
8. irregular stereo-curtain projecting method as claimed in claim 7 is characterized in that, in the described step g, removal of images geometric distortion is corrected each width of cloth image by the mode that cross hairs is corrected, horizontal line is corrected, vertical line is corrected respectively.
9. irregular stereo-curtain projecting method as claimed in claim 7, it is characterized in that, among the described step h, three groups of images are carried out image overlay, when three groups of images were carried out image overlay, one group of image, two groups of lap picture materials with adjacent on the curved surface curtain were identical in the middle of making.
10. irregular stereo-curtain projecting method as claimed in claim 7 is characterized in that, in the described step I, when regulating the brightness of lap, the brightness that makes the brightness of a side picture be linear attenuation, opposite side picture is linear to be increased.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005101108194A CN1976482B (en) | 2005-11-28 | 2005-11-28 | Irregular stereo-curtain projecting method |
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| CN2005101108194A CN1976482B (en) | 2005-11-28 | 2005-11-28 | Irregular stereo-curtain projecting method |
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| CN1976482B true CN1976482B (en) | 2010-09-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101888511A (en) * | 2010-07-12 | 2010-11-17 | 清投视讯(北京)科技有限公司 | Projection integration method for large screen display device |
| CN102809880B (en) * | 2012-08-15 | 2014-12-31 | 无锡羿飞科技有限公司 | System and method for superimposing multiple projectors on basis of spherical display |
| CN103257454A (en) * | 2013-05-27 | 2013-08-21 | 苏州和氏设计营造股份有限公司 | Naked eye 3D projection display system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595283A (en) * | 2003-09-10 | 2005-03-16 | 日本电气视象技术株式会社 | Projection type display device |
| CN1674653A (en) * | 2004-03-23 | 2005-09-28 | 乐金电子（沈阳）有限公司 | A projection display equipment and its working state displaying and keystone distortion correcting method |
| CN1690770A (en) * | 2004-04-30 | 2005-11-02 | 上海科技馆 | Method for correcting geometric distortion of projected image on curved curtain |
| CN1696974A (en) * | 2004-05-10 | 2005-11-16 | 上海科技馆 | Method for eliminating edge joint of 3D stereo animation images |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1595283A (en) * | 2003-09-10 | 2005-03-16 | 日本电气视象技术株式会社 | Projection type display device |
| CN1674653A (en) * | 2004-03-23 | 2005-09-28 | 乐金电子（沈阳）有限公司 | A projection display equipment and its working state displaying and keystone distortion correcting method |
| CN1690770A (en) * | 2004-04-30 | 2005-11-02 | 上海科技馆 | Method for correcting geometric distortion of projected image on curved curtain |
| CN1696974A (en) * | 2004-05-10 | 2005-11-16 | 上海科技馆 | Method for eliminating edge joint of 3D stereo animation images |
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