CN105787951A - 3D special-effect panoramic display method and system for image photographed by fisheye lens - Google Patents
3D special-effect panoramic display method and system for image photographed by fisheye lens Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/04—Texture mapping
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30244—Camera pose
Abstract
The invention discloses a 3D special-effect panoramic display method and a system for an image photographed by a fisheye lens. According to the method of the invention, when 3D model is built or a mapping relationship between a model vertex and fisheye image coordinates is built, a function system with adjustable parameters is adopted, and the parameter values are dynamically adjusted. The thinking set of the existing 3D panoramic display model is broken, the panoramic display can be more beautiful and cooler and has artistic temperament, and individuality is shown in network sharing.
Description
Technical field
The present invention relates to panorama Display Technique, shoot specially good effect panorama display packing and the system of image and/or video especially for fish eye lens, be applied to the various fields such as virtual reality, scientific research, amusement, Internet communication, artistic creation, monitoring.
Background technology
The step that tradition 3D panorama shows includes: the demarcation of (1) fish eye images；(2) 3D model is set up；(3) mapping relations between model vertices and fish eye images coordinate are set up；(4) 3D renders；(5) 3D scene is watched with different view by interactive operation.Further, it is also possible to 3D scene instant network is shared on various internet.
When setting up 3D model, it it is no matter the spliced panoramic of single-lens flake panorama or many camera lenses, the 3D display model of traditional method only has this several frequently seen solid of cube, ball, hemisphere, cylinder, plane, purpose be by shooting or sew up panoramic picture represented according to the visual custom of human eye by 3D model, it is seen that undistorted, have direction feeling, without blind area, just as 3D scene on the spot in person.Further, user can only select from existing model, it does not have changes the possibility of model.
And, when setting up the mapping relations between model vertices and fish eye images coordinate, traditional method is to depend entirely on the optical imagery model of camera lens, such as existing Equisolidangle (solid angle) model, Equidistant (equidistantly) model etc., it is therefore an objective to distort when reproducing 3D scene minimum.Therefore, the mapping relations between model vertices and fish eye images coordinate usually increase, along with the angle of light with optical axis, the incremental relation that imaging radius increases, and see the relation of r and θ in Fig. 1.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention proposes 3D specially good effect panorama display packing and the system of a kind of fish eye lens shooting image.It has broken the thinking set of existing 3D panorama display model, make panorama show can more beautiful, more cruel, there is artistic temperament, network sharing shows individual character.
The technical scheme is that
The 3D specially good effect panorama display packing of a kind of fish eye lens shooting image, comprises the steps:
Carry out 3D model creation or set up between model vertices and fish eye images coordinate mapping relations time, adopt Parameter adjustable function system, dynamically-adjusting parameter value.
The present invention also provides for the 3D specially good effect panorama display system of a kind of fish eye lens shooting image.
There is advantages that
The 3D specially good effect panorama display packing of the fish eye lens shooting image of the present invention and system, broken the routine that existing 3D panorama shows, no longer treated panorama from the angle of distortion correction and show, but annotated 3D panorama from the different visual angles such as intention, moulding.Not only enrich 3D panorama display model, make panorama show more beautiful, more cruel, there is artistic temperament, help user to show individual character in network sharing；And, create the process of model be visual, can be mutual, there is interest and creativeness, promote user's sense of participation.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below accompanying drawing required during embodiment is described is done simple introduction, apparently, drawings discussed below is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a Sphere Measurement Model schematic diagram.
Fig. 2 is texture mapping angle transforming function transformation function schematic diagram.
Fig. 3 (a) (b) (c) is the example changing model by changing proportionality coefficient, and Fig. 3 (d) (e) (f) (g) is various asteroid views.
Fig. 4 (a) (b) (c) is the example changing model by changing moulding coefficient.
Fig. 5 (a) (b) (c) (d) is the example of more multi-model, comprises asymmetric model.
Fig. 6 (a) (b) (c) (d) (e) (f) is the fish eye images shot by single-lens panoramic camera, respectively as texture image in Fig. 3,4,5.
Fig. 7 is the 3D specially good effect panorama display system of embodiment of the present invention fish eye lens shooting image.
Detailed description of the invention
Below in conjunction with Figure of description 1-7, the detailed description of the invention of the embodiment of the present invention is elaborated.
The present invention adopts the function system of Parameter adjustable, by interactive operation dynamically-adjusting parameter value, creates the 3D model of continuous variable；By the 3D mapping technology rendered, fish eye images is mapped on the 3D model built up, generates 3D specially good effect panorama model；By interactive operation, watch the 3D specially good effect panorama model of generation with different view；In conjunction with technology such as HTML5, WebGL, 3D specially good effect panorama model is shared network immediately.
As a kind of embodiment, when setting up 3D model, described 3D model can be mutual, have employed the function system of Parameter adjustable, dynamically-adjusting parameter value, creates the 3D model of continuous variable.It is essential that user can see the model of establishment immediately, therefrom select the model oneself liked.
As a kind of embodiment, when setting up the mapping relations between model vertices and fish eye images coordinate, its mapping relations can be mutual, have employed the function system of Parameter adjustable, dynamically-adjusting parameter value, creates the mapping relations between model vertices and the fish eye images coordinate of continuous variable.
Set up the mapping relations between model vertices and fish eye images coordinate, in the embodiment of the present invention, owing to the fish eye images of shooting has color abundant, natural, it is as having artistic texture image, and it is not only used for the reproduction of real scene, therefore, mapping relations are also variable alternately in embodiments of the present invention, it is therefore an objective to make to be attached to effect more aesthetic feeling on 3D model.
Create 3D specially good effect panorama model, complete instant network followed by technology such as HTML5 and WebGL and share and propagate.HTML5 technology can carry out cross-platform use, no matter is that notebook, desktop computer or smart mobile phone can browse the website based on HTML5 very easily.WebGL is a kind of 3D drafting standards, provides hardware 3D to accelerate to render by unified, standard, cross-platform OpenGL interface for HTML5, thus can show 3D scene and model in browser more glibly.
Embodiment one
The enforcement one of the present invention utilizes the procedure of the 3D model of the function system establishment continuous variable of changeable parameters when being detailed description mutual establishment 3D model.
In the embodiment of the present invention, 3D model uses coordinate system as it is shown in figure 1, this coordinate system is consistent with the definition of OpenGL world coordinate system [Descartes (Descartes) right-handed coordinate system], it is simple to adopts OpenGL technology to carry out 3D and renders.
Fig. 1 has a Sphere Measurement Model.In prior art, if the coordinate of any point p is on sphere, (x, y, z), then spherical equation is provided by formula (1).Wherein, θ isWith the angle of y-axis,It isAt the angle of projection and the x-axis of xoz plane, R is radius.
In the embodiment of the present invention, for making the variable appearance of 3D model, spherical equation formula (1) is improved, become the function system of changeable parameters, such as following formula (2),
In formula, hx、hy、hzTake arithmetic number, for changing the model ratio in x, y, z direction, be called proportionality coefficient；tx、ty、tzTreating excess syndrome number, for changing the model moulding in x, y, z direction, is called moulding coefficient；cyTreating excess syndrome number, for arranging the model position in y-axis, is called position parameter.θ、Definition and formula (1) identical.
As a kind of embodiment, the range of choice of changeable parameters function is very extensive, for instance can also in formula (2)Before also increase coefficient lx, lz；Wherein, coefficient lx, lzFor real number, namely formula (2) is transformed to formula (2a):
Or change over the trigonometric function of other changeable parameters, polynomial function etc..
It is merely illustrative and is specifically described for formula (2), it is therefore apparent that as parameter h in formula (2)x、hzEqual, and tx、tzTime equal, model is symmetrical about y-axis.
Fig. 3 is by changing proportionality coefficient hx、hy、hzChanging the example of model, model parameter is as follows respectively:
Fig. 3 (a): hx=hz=0.1；hy=1；tx=ty=tz=0.5；cy=-0.5；
Fig. 3 (b): hx=hz=0.5；hy=1；tx=tz=ty=0.5；cy=-0.5；
Fig. 3 (c): hx=hz=0.5；hy=0；tx=tz=ty=0.5；cy=-0.5；
Fig. 3 (d): same to Fig. 3 (c)
Wherein, Fig. 3 (a) (b) (c) sees the view to zero (0,0,0) from viewpoint (0,0,4) edge-z-axis.Fig. 3 (c) has deteriorated to the disk plane of y=0.5.And Fig. 3 (d) and Fig. 3 (c) model is identical, simply direction of visual lines is different, and Fig. 3 (d) sees the view to zero (0,0,0) along y-axis from viewpoint (0,4,0).
Fig. 3 (e) be the viewpoint in Fig. 3 (d) further towards disk plane time the partial view seen.LittlePlanet (asteroid) figure that this view generates with existing Stereographicprojection (stereographic projection) technology plays the same tune on different musical instruments, as shown in Fig. 3 (f).Owing to original fish eye images visual angle is not 360 ° x360 °, but 360 ° x230 °, a black hole can be produced in the center of stereographic projection asteroid figure.Different from stereographic projection technology, in the embodiment of the present invention, asteroid figure is by a 3D model special case (the same to Fig. 3 (c) of parameter under special parameter, certain viewing angles, viewpoint (0,4,0), see to (0,0,0)), not only in center without black hole, produce " cartoon " effect, see Fig. 3 (e)；And, by adjusting parameter, it is possible to generate various different asteroid figure；It is further possible to add the circular image of any radius in center, for instance the LOGO in Fig. 3 (g) so that effect is close to stereographic projection asteroid figure.
Model in all Fig. 3 is all with fish-eye image 6 (a), creates, according to following embodiment two, the texture mapping that the mapping relations described in the mapping relations between model vertices and fish eye images coordinate carry out alternately.
Fig. 4 is by changing moulding coefficient tx、ty、tzChanging the example of model, texture image is from Fig. 6 (b), and model parameter is as follows respectively:
Fig. 4 (a): hx=hz=hy=1；tx=tz=2.5；ty=1.0；cy=-0.5；
Fig. 4 (b): hx=hz=hy=1；tx=tz=3.0；ty=1.5；cy=-0.5；
Fig. 4 (c): hx=hz=hy=1；tx=tz=5.0；ty=1.0；cy=-0.5；；
The example of Fig. 3 and Fig. 4 is all the model symmetrical about y-axis.It is true that by allowing hx、hzOr tx、tzUnequal can be created that various asymmetric model.More 3D model refer to Fig. 5, parameter numerous to list herein.The texture image of Fig. 5 (a) (b) (c) (d) is respectively from Fig. 6 (c) (d) (e) (f).It will be seen that the embodiment of the present invention makes panorama show the display breaching traditional sense, having more can interactive art effect.
In the embodiment of the present invention, building 3D model is continuous function, and all parameters are all real numbers, therefore can adjusting alternately by interface easily.Such as, the different gesture of definition or button represent and adjust different parameters, change of definition finger or mouse moving direction and distance representation parameter etc., the coefficient operation on interface being converted in formula (2) passes to 3D module, thus changing the 3D model of display.
Embodiment two
The enforcement two of the present invention is the detailed process that the mutual mapping relations created between model vertices and fish eye images coordinate of detailed description create continuous variable mapping relations.
Illustrate for Fig. 1.If the optical imagery model of camera lens is r=f (θ), wherein r is imaging radius, and θ is the angle of light and optical axis.Then on 3D model any summit p (x, y, z), in prior art, texture mapping relations are r=kf (θ), and wherein k is proportionality coefficient so that texture coordinate i (u v) is mapped in [0,1] interval.This mapping relations can make 3D scene relatively truer, distorts less, and distortion degree depends on the approximation ratio of pattern function and true optical function.
The embodiment of the present invention due to not by distort little for the purpose of, therefore can be changed on the basis of optical model, as shown in formula (3).
R=kf (g (θ)), θ ∈ [0, θmax](3)
In formula (3), θmaxMaximum angle for light Yu optical axis；Angle transform function g (θ) is [0, θmax] continuous function in interval.
In prior art, texture mapping relations are g (θ)=θ, see the increasing function straight line in Fig. 2, and in embodiments of the present invention, that use in Fig. 3,4,5 is all g (θ)=θmax-θ, is shown in the decreasing function straight line in Fig. 2, and both mapping relations are all simple linear functions.It is possible to further the function curve that Selection parameter is variable, the function curve that two dotted lines in Fig. 2 represent, to produce different texture mapping effect.
Embodiment three
When sharing 3D panorama specially good effect model, 3D model data, and the fish eye images as texture uploads onto the server, server end be embedded in HTML5 code, and generates network linking for accessing.
In prior art, HTML5 and WebGL technology all supported by most of browsers, and under the support of the two, the instant network of 3D panorama is shared and is possibly realized.Except WebGL, also there is other network 3D Rendering, only illustrate for WebGL here.
WebGL is built-in rendering code in HTML5 webpage, comprises the 3D such as 3D model, texture image, light, material and renders element, is the online edition of OpenGL.
When opening a HTML5 webpage containing WebGL code, support that the browser of WebGL can run automatically and render code, show the 3D scene rendered at browser window.
WebGL supports self-defining 3D model.Therefore, when sharing 3D panorama specially good effect model, only need to 3D model data, for instance vertex cache, indexed cache etc., and the fish eye images as texture uploads onto the server, server end automatically insert in HTML5 code, and generate network linking for people's access.
As a kind of embodiment, it is exemplified below:
31) mobile terminal generates specially good effect model；
32) after click is shared, the model data of generation: vertical array, array of indexes are sent to server in the way of file.Flake original image is also sent to server simultaneously.
Model data and flake original image are all only stored in server.
33) server generates html5 link, and sends back mobile terminal.
For sharing of tradition 3D panorama model, this scheme namely can be used, it is also possible to directly utilize the WebGL 3D model comprised itself.
Embodiment four
For realizing the purpose of the embodiment of the present invention, as shown in Figure 7, the embodiment of the present invention additionally provides the 3D specially good effect panorama display system of fish eye lens shooting image, it includes dynamic adjusting module 10, for carry out 3D model creation or set up between model vertices and fish eye images coordinate mapping relations time, adopt the function system of Parameter adjustable, dynamically-adjusting parameter value.
As a kind of embodiment, described dynamic adjusting module 10, including model creation submodule 11 and mapping submodule 12.
Described model creation submodule 11, for when carrying out 3D model creation, have employed the function system of Parameter adjustable, by user operation dynamically-adjusting parameter value, creates the 3D model of continuous variable.
Described mapping submodule 12, for when the mapping relations set up between model vertices and fish eye images coordinate, its mapping relations can be mutual, have employed the function system of Parameter adjustable, dynamically-adjusting parameter value, creates the mapping relations between model vertices and the fish eye images coordinate of continuous variable.
Described 3D specially good effect panorama display system, it is also possible to include sharing module 20, for when sharing 3D panorama specially good effect model, 3D model data, and the fish eye images as texture uploads onto the server, server end it is embedded in HTML5 code, and generates network linking for accessing.
The 3D specially good effect panorama display system of the fish eye lens shooting image of the embodiment of the present invention, the process of its work is essentially identical with the 3D specially good effect panorama display packing of the fish eye lens of embodiment of the present invention shooting image, therefore, in the present invention about in the work specification of this system, repeated description no longer one by one.
In the embodiment of the present invention, user passes through shirtsleeve operation, for instance finger slides, mouse moves, it is possible to automatically create a series of special formed solid；Further, automatically by selected fish eye images pinup picture on this solid；From the solid after arbitrarily angled viewing pinup picture, the 3D display effect that various difference is conventional can be presented by simple operations；Further, immediately the 3D model of generation being shared network, such as circle of friends, microblogging, forum etc., the more people of confession views and admires.It has broken the thinking set of existing 3D panorama display model, make panorama show can more beautiful, more cruel, there is artistic temperament, network sharing shows individual character.
Those of ordinary skill in the art should further appreciate that, the unit of each example described in conjunction with the embodiments described herein and algorithm steps, can with electronic hardware, computer software or the two be implemented in combination in, in order to clearly demonstrate the interchangeability of hardware and software, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Those of ordinary skill in the art specifically can should be used for using different methods to realize described function to each, but this realization is it is not considered that beyond the scope of this invention.
The method described in conjunction with the embodiments described herein or the step of algorithm can hold the software module of track with hardware, processor, or the combination of the two is implemented.Software module can be placed in any other form of storage medium known in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable ROM, depositor, hard disk, moveable magnetic disc, CD-ROM or technical field.
Embodiment described above only have expressed the present invention preferred embodiment, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (12)
1. the 3D specially good effect panorama display packing of a fish eye lens shooting image, it is characterised in that comprise the steps:
Carry out 3D model creation or set up between model vertices and fish eye images coordinate mapping relations time, adopt Parameter adjustable function system, dynamically-adjusting parameter value.
2. 3D specially good effect panorama display packing according to claim 1, it is characterised in that adopt the function system of Parameter adjustable during described 3D model creation, comprise the steps:
When carrying out 3D model creation, have employed the function system of Parameter adjustable, by user operation dynamically-adjusting parameter value, create the 3D model of continuous variable；
Building 3D model is continuous function, and all parameters are all real numbers.
3. 3D specially good effect panorama display packing according to claim 2, it is characterised in that described changeable parameters function is trigonometric function or the polynomial function of changeable parameters.
4. 3D specially good effect panorama display packing according to claim 2, it is characterised in that described changeable parameters function is:
In formula, if on model, the coordinate of any point p is (x, y, z)；Wherein, θ isWith the angle of y-axis,It isAngle in projection and the x-axis of xoz plane；hx、hy、hzTake arithmetic number, for changing the model ratio in x, y, z direction, be called proportionality coefficient；tx、ty、tzTreating excess syndrome number, for changing the model moulding in x, y, z direction, is called moulding coefficient；cyTreating excess syndrome number, for arranging the model position in y-axis, is called position parameter.
5. 3D specially good effect panorama display packing according to claim 4, it is characterised in that described changeable parameters function is:
Wherein, coefficient lx, lzFor real number.
6. the 3D specially good effect panorama display packing according to any one of claim 1 to 5, it is characterised in that when setting up the mapping relations between model vertices and fish eye images coordinate, adopts the function system of Parameter adjustable, comprises the steps:
When setting up the mapping relations between model vertices and fish eye images coordinate, its mapping relations can be mutual, have employed the function system of Parameter adjustable, dynamically-adjusting parameter value, creates the mapping relations between model vertices and the fish eye images coordinate of continuous variable.
7. 3D specially good effect panorama display packing according to claim 6, it is characterised in that setting the optical imagery model of camera lens as r=f (θ), wherein r is imaging radius, and θ is the angle of light and optical axis；
Then on 3D model any summit p (x, y, z), texture mapping relations:
R=kf (g (θ)), θ ∈ [0, θmax]
K is proportionality coefficient；θmaxMaximum angle for light Yu optical axis；Angle transform function g (θ) is [0, θmax] continuous function in interval.
8. 3D specially good effect panorama display packing according to claim 7, it is characterised in that described angle transform function is:
G (θ)=θmax-θ。
9. 3D specially good effect panorama display packing according to claim 6, it is characterised in that also comprise the steps:
When sharing 3D panorama specially good effect model, 3D model data, and the fish eye images as texture uploads onto the server, server end be embedded in HTML5 code, and generates network linking for accessing.
10. the 3D specially good effect panorama display system of a fish eye lens shooting image, it is characterized in that, including dynamic adjusting module, for carry out 3D model creation or set up between model vertices and fish eye images coordinate mapping relations time, adopt the function system of Parameter adjustable, dynamically-adjusting parameter value.
11. 3D specially good effect panorama display system according to claim 10, it is characterised in that described dynamic adjusting module, including model creation submodule and mapping submodule；
Wherein:
Described model creation submodule, for when carrying out 3D model creation, have employed the function system of Parameter adjustable, by user operation dynamically-adjusting parameter value, creates the 3D model of continuous variable.
Described mapping submodule, for when the mapping relations set up between model vertices and fish eye images coordinate, its mapping relations can be mutual, have employed the function system of Parameter adjustable, dynamically-adjusting parameter value, creates the mapping relations between model vertices and the fish eye images coordinate of continuous variable.
12. the 3D specially good effect panorama display system according to claim 10 or 11, it is characterized in that, also include sharing module, for when sharing 3D panorama specially good effect model, 3D model data, and the fish eye images as texture uploads onto the server, server end it is embedded in HTML5 code, and generates network linking for accessing.
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| PCT/CN2016/110631 WO2017128887A1 (en) | 2016-01-26 | 2016-12-19 | Method and system for corrected 3d display of panoramic image and device |
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| CN111223177B (en) * | 2019-12-18 | 2020-12-04 | 北京城市网邻信息技术有限公司 | Method and device for constructing three-dimensional model of three-dimensional space and storage medium |
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