CN105954969A - 3D engine applied to phantom imaging and implementation method thereof - Google Patents
3D engine applied to phantom imaging and implementation method thereof Download PDFInfo
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- CN105954969A CN105954969A CN201610550944.5A CN201610550944A CN105954969A CN 105954969 A CN105954969 A CN 105954969A CN 201610550944 A CN201610550944 A CN 201610550944A CN 105954969 A CN105954969 A CN 105954969A
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- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
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Abstract
The invention relates to phantom imaging technologies and discloses an implementation method of a 3D engine applied to phantom imaging. The implementation method specifically comprises the following steps: S101, acquiring a 3D model of an object needing phantom imaging, thereby obtaining images of the 3D model in a front window, a back window, a left window and a right window; S102, rendering the images in the front window, the back window, the left window and the right window; and S103, after adjusting the sizes of the rendered images in the front window, the back window, the left window and the right window, splicing the adjusted images according to projection shapes of four projection planes of a pyramid on a plane, and sequentially arranging the front image, the left image, the back image and the right image clockwise, wherein the tops of the four images point to an intermediate point of a rectangle or respectively point to four sides of the rectangle; and finally projecting the combined image onto the pyramid to perform the phantom imaging. By adopting the implementation method of the 3D engine applied to the phantom imaging, massive 3D models can be directly displayed in a phantom imaging system.
Description
Technical field
The present invention relates to phantom imaging technology, particularly to a kind of 3D engine for phantom imaging and its implementation.
Background technology
Phantom imaging is a kind of application in holographic imaging technology, it achieves three-dimensional picture and is suspended in outdoor scene illusory effect (its principle is as shown in Figure 1) in the air, and it has built the most unreal also genuine atmosphere, and effect is peculiar, has strong depth feelings, and true and false difficulty is debated.It is suitable for performance details or the more rich individual articles of internal structure, such as famous-brand clock, name car, jewelry, industrial products, also can show personage, cartoon etc., to the sensation of spectators' total relief.
In prior art, in order to make the hologram of three-dimensional body, it is necessary first in three-dimensional software, one section of video is recorded in the face, four, animation point front, rear, left and right of object respectively, with Video editing software, four sections of video-splicings are become a video the most again.If it is desired to the action even size adjusting object all must be done one time the most again, if four sides vertebral body is inverted, the stitching direction of all video contents also must be readjusted, and whole process is the most loaded down with trivial details；And video content be by linear play be the most also difficult to interact with user.Video file is the biggest, and the video of a few minutes needs to take the space of nearly 100,000,000, is unfavorable for that network transmits.More than limit that to ultimately result in current phantom imaging system application scenarios very limited, be mainly used in the displaying of article under line.
3D engine of the prior art output can be only the output of a viewport image, patent such as Application No. CN201510220736.4, its three-dimensional stereo effect mentioned, only it is the use of a holographic film as projection screen, as long as the image of this one viewport of mode is it is achieved that but such effect that realizes obviously cannot realize the phantom imaging of 360 °.
Summary of the invention
It is an object of the invention to: there is manufacturing process for phantom imaging of the prior art loaded down with trivial details, it is difficult to amendment and the big technical problem of file, the invention discloses a kind of 3D engine for phantom imaging and its implementation.
The technical solution used in the present invention is such that
The invention discloses the implementation method of a kind of 3D engine for phantom imaging, it specifically includes below step: step S101, acquisition need the 3D model of phantom imaging object, obtain the 3D model image at four viewing windows in front, rear, left and right；Step S102, image to four viewing windows in front, rear, left and right render；Step S103, will render after four viewing windows in front, rear, left and right Image Adjusting size after splice by four perspective planes of four sides vertebral body projection of shape in the plane, the most sequentially placing front image, left image, rear image and right image, the top of four images is directed to the intermediate point of rectangle or is respectively directed to the four edges of rectangle；Finally the image projection after combination is carried out phantom imaging on the vertebral body of four sides.
Further, when perspective plane is positive vertebral body, the top of four images is directed to the intermediate point of rectangle；When perspective plane is vertebral body, the top of four images is directed to the four edges of rectangle.
Further, said method also includes, when the outward flange of four images that user is sized exceeds the projection in the plane of four perspective planes of vertebral body, four sides, to carry out cutting beyond part.
Further, above-mentioned cutting and splicing are particularly as follows: with four perspective planes of four sides vertebral body projection of shape in the plane for cutting template, the part reservation that four images are intersecting therewith, beyond partly carrying out cutting, remainder splices with background color.
The invention also discloses a kind of 3D engine for phantom imaging, it specifically includes the acquisition interface unit of 3D model, the acquiring unit of viewing window image, rendering unit and image mosaic unit；Described interface unit needs the 3D model of phantom imaging object for obtaining, and obtains the 3D model image at four viewing windows in front, rear, left and right；Described rendering unit is for rendering the image of four viewing windows in front, rear, left and right；Splice by four perspective planes of four sides vertebral body projection of shape in the plane after the Image Adjusting size of the described image mosaic unit four viewing windows in front, rear, left and right after just render, the most sequentially placing front image, left image, rear image and right image, the top of four images is directed to the intermediate point of rectangle or is respectively directed to the four edges of rectangle；Finally the image projection after combination is carried out phantom imaging on the vertebral body of four sides.
Further, above-mentioned 3D engine also includes memory element, and described memory element is used for the image after caching the image of four viewing windows in front, rear, left and right and rendering.
Further, above-mentioned 3D engine also includes that cutting and stapling unit, cutting and stapling unit will be for when the outward flange of four images exceeds the projection in the plane of four perspective planes of vertebral body, four sides, carrying out cutting beyond part.
Further, the process that implements of above-mentioned cutting and concatenation unit is: with four perspective planes of four sides vertebral body, projection of shape in the plane is for cutting template, the part reservation that four images are intersecting therewith, carries out cutting beyond part, and remainder splices with background color.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows: 1.
By personage's 3D model of band skeleton action as a example by 360 ° of positive pyramidal systems of phantom imaging show, phantom imaging 3D engine can import the 3D person model of 3DMAX or Maya form band skeleton action, 3D engine carries out real-time rendering from all around four viewing windows to model, four rendering result are spliced, and on screen, show final rendering result, through the refraction of four display surfaces of vertebral body, people from each orientation it can be seen that a static 3D personage is suspended in vertebral body.When 3D engine receives the instruction (such as: mouse drag rotates, deliberate action triggers) of outside, 3D engine is by according to the movement locus set, with speed more than 30 frames per second, complete rendering, recombinate and showing of every frame, so people just can see a 3D personage moved in vertebral body, if change action command, the action of 3D personage changes the most therewith.Finally achieved the display of 3D model in phantom imaging system and control by above procedure 3D engine, thus enormously simplify original operating procedure, owing to achieving the random control to 3D model, therefore can develop very many application on this basis.2. amendment process becomes very flexibly, it is only necessary to amendment 3D model and control instruction just can conveniently realize the action amendment of phantom, direction adjustment, the greatly aspect use of user.The size of the most whole file reduces a lot of times compared with original video file, it is simple to preserve, network transmission etc..
The present invention makes the threedimensional model of magnanimity directly can need not present in phantom imaging system through video conversion, and the api interface of the 3D engine passed through, the action conversion controlling information realization threedimensional model can be inputted at any time, clothing replacing etc., it is easy to and user interaction, even can develop phantom 3d gaming, this will expand the range of application of phantom system greatly.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of phantom imaging.
Fig. 2 be the phantom imaging of the present invention realize procedure chart.
Fig. 3 is the procedure chart that wherein piece image carries out real-time rendering.
Fig. 4 is the schematic diagram of the spliced map that positive vertebral body is corresponding.
Fig. 5 is the schematic diagram of the spliced map that vertebral body is corresponding.
Fig. 6 is image cropping schematic diagram.
Fig. 7 is image mosaic schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 2 be the phantom imaging of the present invention realize procedure chart.The invention discloses the implementation method of a kind of 3D engine for phantom imaging, it specifically includes below step: step S101, acquisition need the 3D model of phantom imaging object, obtain the 3D model image at four viewing windows in front, rear, left and right；Step S102, image to four viewing windows in front, rear, left and right render；Step S103, will render after four viewing windows in front, rear, left and right Image Adjusting size after splice by four perspective planes of four sides vertebral body projection of shape in the plane, the most sequentially placing front image, left image, rear image and right image, the top of four images is directed to the intermediate point of rectangle or is respectively directed to the four edges of rectangle；Finally the image projection after combination is carried out phantom imaging on the vertebral body of four sides.As projecting to carry out phantom imaging on the vertebral body of four sides.
Said method is used to make the threedimensional model of magnanimity directly can need not present in phantom imaging system through video conversion, api interface by 3D engine, control information can be inputted at any time convert with the action realizing threedimensional model, clothing replacing etc., it is easy to and user interaction, even can develop phantom 3d gaming, this will expand the range of application of phantom system greatly.
3D model in above-mentioned steps S101 can use the 3D person model of 3DMAX or Maya form, the usually action of band skeleton, naturally it is also possible to is other model, is not the most defined this.3D engine in the present invention can be introduced directly into the 3D person model of 3DMAX or Maya form band skeleton action, so that the existing 3D model existed sufficiently is applied.
Step S102 carries out the process of real-time rendering as shown in Figure 3 to wherein piece image.It specifically includes below step: S201, obtains the geometric data of 3D model, and geometric data is carried out world's conversion, view transformation and photo-irradiation treatment；Step S202, result step S201 obtained carry out projective transformation, cutting and rasterisation, thus complete to render.So rendering the phantom image shown afterwards the most true to nature, picture texture is more preferable, so that user is the most satisfied.
The image mosaic of four viewing windows in front, rear, left and right after rendering in step S103 becomes piece image.Wherein four sides vertebral body includes two kinds, and one is positive vertebral body, and one is vertebral body.Fig. 4 is the schematic diagram of the spliced map that positive vertebral body is corresponding.Fig. 5 is the schematic diagram of the spliced map that vertebral body is corresponding.When perspective plane is positive vertebral body, the intermediate point of rectangle is pointed at the top of the image of four viewing windows in front, rear, left and right；When perspective plane is vertebral body, the four edges of rectangle is pointed at the top of the image of four viewing windows in front, rear, left and right.The picture connecting method that structure different choice according to perspective plane is different, so that correctly show, and makes display effect the most true to nature.User is facilitated to watch.
Said method also includes cutting and the stitching carrying out image according to the magnitude relationship between vertebral body perspective plane, four sides and the outward flange of image.Cutting and stitching is carried out so that the picture effect presented is more preferable according to the size between vertebral body perspective plane, four sides and the outward flange of image.When the edge of picture is without departing from the display surface of vertebral body, have only to remainder splice by background colour, when the outward flange of picture exceeds the display surface of vertebral body, will crop beyond the picture of part, and the picture after cutting is spliced to successively in a rectangle, show for phantom imaging.
Background is typically set to black by said method.Background is set to black, and such display effect is more preferable.
Said method also includes that judgement is 180 ° of phantom imagings or 360 ° of phantom imagings.180 ° of phantom imagings are after 3D renders end, background just can directly be set to black can carry out screen and show, need not the splicing of image, directly image can be shown on the perspective plane at 45 ° of inclination angles, but so cannot realize 360 ° of phantom imagings, at most can only realize 180 ° of phantom imagings.And 360 ° of phantom imagings are after reading 3D model, the image of model four viewing windows all around is rendered (the typically image of these four viewing windows is all rectangular image), rendering result is stored in caching, and according to the different picture connecting method of the set direction of perspective plane vertebral body.When perspective plane is positive vertebral body, the intermediate point of rectangle is pointed at the top of the image of four viewing windows in front, rear, left and right；When perspective plane is vertebral body, the four edges of rectangle is pointed at the top of the image of four viewing windows in front, rear, left and right.
If 3D model band action, it is only necessary to ensure that rendering splicing speed is more than 30 frames per second, can normally show.
3D engine includes system module, math block, graphics system, physical system, sound module, input control module, artificial intelligence module, graphic user interface and various auxiliary development instrument are (such as Scene Editor, specially good effect editing machine etc.), wherein, graphics system is the nucleus module of whole 3D engine, and for the 3D engine of phantom imaging system, it is i.e. the image-forming principle according to phantom imaging and feature, carry out the graph rendering module of graphics system in 3D engine improving with the requirement reaching phantom imaging, other parts of 3D engine are not belonging to the improvement emphasis of the present invention, no longer the other parts of 3D engine are illustrated at this.
The description of the substance of 3D graphics system, i.e. given scenario, including the material of each object, texture, coordinate etc., the position of photographing unit and towards information such as, light sources, calculate its finally corresponding on the rasterisation display of two dimension display result.From initial scene description to final display result, this whole process all completes in 3D rendering pipeline.
The invention also discloses a kind of 3D engine for phantom imaging, it specifically includes the acquisition interface unit of 3D model, the acquiring unit of viewing window image, rendering unit and image mosaic unit；Described interface unit needs the 3D model of phantom imaging object for obtaining, and obtains the 3D model image at four viewing windows in front, rear, left and right；Described rendering unit is for rendering the image of four viewing windows in front, rear, left and right；Splice by four perspective planes of four sides vertebral body projection of shape in the plane after the Image Adjusting size of the described image mosaic unit four viewing windows in front, rear, left and right after just render, the most sequentially placing front image, left image, rear image and right image, the top of four images is directed to the intermediate point of rectangle or is respectively directed to the four edges of rectangle；Finally the image projection after combination is carried out phantom imaging on the vertebral body of four sides.
Further, above-mentioned 3D engine also includes memory element, and described memory element is used for the image after caching the image of four viewing windows in front, rear, left and right and rendering.
Further, above-mentioned 3D engine also includes that cutting and stapling unit, cutting and stapling unit will be for when the outward flange of four images exceeds the projection in the plane of four perspective planes of vertebral body, four sides, carrying out cutting beyond part.
Further, the process that implements of above-mentioned cutting and concatenation unit is: with four perspective planes of four sides vertebral body, projection of shape in the plane is for cutting template, the part reservation that four images are intersecting therewith, carries out cutting beyond part, and remainder splices with background color.
Image cropping schematic diagram as shown in Figure 6, the isosceles triangle intersection image that rectangular image is formed with four sides vertebral body projection retains, and the image beyond part carries out cutting.
Image mosaic schematic diagram as shown in Figure 7.Four isosceles trapezoids are stitched together, and mid portion is filled by background color, eventually form a rectangle.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (8)
1. being used for an implementation method for the 3D engine of phantom imaging, it specifically includes below step: step S101, acquisition need the 3D model of phantom imaging object, obtain the 3D model image at four viewing windows in front, rear, left and right；Step S102, image to four viewing windows in front, rear, left and right render；Step S103, will render after four viewing windows in front, rear, left and right Image Adjusting size after splice by four perspective planes of four sides vertebral body projection of shape in the plane, the most sequentially placing front image, left image, rear image and right image, the top of four images is directed to the intermediate point of rectangle or is respectively directed to the four edges of rectangle；Finally the image projection after combination is carried out phantom imaging on the vertebral body of four sides.
2. the implementation method of the 3D engine for phantom imaging as claimed in claim 1, it is characterised in that when perspective plane is positive vertebral body, the top of four images is directed to the intermediate point of rectangle；When perspective plane is vertebral body, the top of four images is directed to the four edges of rectangle.
3. the implementation method of the 3D engine for phantom imaging as claimed in claim 1, it is characterized in that described method also includes, when the outward flange of four images that user is sized exceeds the projection in the plane of four perspective planes of vertebral body, four sides, to carry out cutting beyond part.
4. the implementation method of the 3D engine for phantom imaging as claimed in claim 3, it is characterized in that described cutting and splicing particularly as follows: with four perspective planes of four sides vertebral body projection of shape in the plane for cutting template, the part reservation that four images are intersecting therewith, carrying out cutting beyond part, remainder splices with background color.
5. the 3D engine for phantom imaging, it is characterised in that specifically include the acquisition interface unit of 3D model, the acquiring unit of viewing window image, rendering unit and image mosaic unit；Described interface unit needs the 3D model of phantom imaging object for obtaining, and obtains the 3D model image at four viewing windows in front, rear, left and right；Described rendering unit is for rendering the image of four viewing windows in front, rear, left and right；Splice by four perspective planes of four sides vertebral body projection of shape in the plane after the Image Adjusting size of the described image mosaic unit four viewing windows in front, rear, left and right after just render, the most sequentially placing front image, left image, rear image and right image, the top of four images is directed to the intermediate point of rectangle or is respectively directed to the four edges of rectangle；Finally the image projection after combination is carried out phantom imaging on the vertebral body of four sides.
6. the 3D engine for phantom imaging as claimed in claim 5, it is characterised in that described 3D engine also includes memory element, described memory element is used for the image after caching the image of four viewing windows in front, rear, left and right and rendering.
7. the 3D engine for phantom imaging as claimed in claim 6, it is characterized in that described 3D engine also includes cutting and stapling unit, cutting and stapling unit will be for when the outward flange of four images exceeds the projection in the plane of four perspective planes of vertebral body, four sides, carrying out cutting beyond part.
8. the 3D engine for phantom imaging as claimed in claim 7, the process that implements that it is characterized in that described cutting and concatenation unit is: with four perspective planes of four sides vertebral body, projection of shape in the plane is for cutting template, the part reservation that four images are intersecting therewith, carrying out cutting beyond part, remainder splices with background color.
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Application publication date: 20160921 |