CN103871094A - Swept-volume-based three-dimensional display system data source generating method - Google Patents
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Abstract
The invention discloses a swept-volume-based three-dimensional display system data source generating method. The method comprises steps of acquiring a three-dimensional display film source and rebuilding a three-dimensional scene, acquiring location information and color information of a model from the three-dimensional scene, adopting dynamic palette algorithm to compress the color information, recombining the location information and the color information according to the physical structure and the circuit structure of the three-dimensional display system to generate a three-dimensional display system data source. According to the swept-volume-based three-dimensional display system data source generating method, advanced programming language is adopted to be combined with professional modeling software for processing the three-dimensional model, and the dynamic palette algorithm is combined to generate a data source high in compression ratio and applicable to a rotating platform.
Description
Technical field
The present invention relates to one based on swept-volume three-dimensional display system data source generation method, belong to the technical field that stereo-picture shows.
Background technology
3 D stereoscopic image, is that to observe the angle of object slightly variant due to people's eyes, therefore can distinguish object distance, thereby produce three-dimensional vision.Along with the hot showing of 3D film, popular also day by day dense to the interest of 3-D display.3D shows the developing direction that becomes video equipment of future generation.
Current 3D technology can be divided into bore hole formula and the large classification of spectacle two from observer's angle, spectacle 3D technology has been applied to consumer level market now, development is comparatively ripe, still, due to everyone individual difference, is difficult to adapt to the convenient user demand of general character.Bore hole formula 3D technology is in development mostly, and it is also not general that mass consumption person contacts, and is presented at following importance but research department of various countries and market department have recognized 3D.
Modern stereo display technique roughly can be divided into four large classes: stereoscope technology, holographic technique, free 3 D display technology, real tri-dimension display technique.Stereoscope technology ultimate principle is: by binocular vision, binocular receives two different width images, then combined by brain, thus the sensation of generation three-dimensional body; Holographic technique ultimate principle is: first by interference of light principle, object scattering or the specific light wave launched, with the form record of interference fringe, are then pressed to diffraction of light principle, reproduce the picture of the original under certain condition; Free 3 D display technology is the display technique of watching stereopsis without wearing aid, and its Main Function principle is still based on binocular parallax, still will be subject to certain limitation depending on person's viewing location; And real tri-dimension display mechanism based on swept-volume, adopt two-dimentional LED rotary screen, add and rotate to form the third dimension, having vertical and horizontal parallax, is the reconstruction of hologram true to nature to Subject, with respect to the current popular three-dimensional display that utilizes binocular parallax, can give people observes objective scene and more directly experiences, there is outstanding object and reproduce effect, meet all physiology and psychological depth cueing, allow many people, multi-angle, bore hole to watch scene simultaneously.Have a wide range of applications in fields such as military affairs, medical treatment, displaying, amusement, education, culture.
The acquisition methods of 3-D display film source has the real scene shooting of many camera lenses, tomoscan data reconstruction and scene modeling mode etc.In the real three-dimensional scenic of reconstruction, the modeling of scene is the problem that first will consider, and the quality of modeling directly affects user's impression.The modeling technique of main flow has three: by shape library and high-level programming language, this scheme is applicable to all mainstream operation system platforms, but is conventionally difficult to build complicated 3D model; By Virtual Reality Modeling Language, this language is widely used in network, but compiling ability can not meet the requirement of real-time structure; Be finally by professional 3D modeling software, in quality, there is high performance performance reliability aspect, but lacks good interactivity.
Summary of the invention
The present invention has overcome in prior art and has lacked the defects such as interactivity, has proposed a kind of based on swept-volume three-dimensional display system data source generation method.
The present invention proposes one based on swept-volume three-dimensional display system data source generation method, comprising:
Step 1: obtain 3-D display film source, reconstruction of three-dimensional scene;
Step 2: positional information and the color information of obtaining model from described three-dimensional scenic;
Step 3: adopt color information described in dynamic palette compression algorithm;
Step 4: reconfigure described positional information and described color information according to the physical arrangement of three-dimensional display system and circuit structure, generating three-dimensional display system data source.
Wherein, in described step 1, utilize modeling software, the real scene shooting of many camera lenses or tomoscan to obtain described 3-D display film source.
Wherein, described step 1 further comprises, when reconstruction of three-dimensional scene, described three-dimensional scenic is classified according to complexity, described classification according to comprising the size of described three-dimensional scenic, number and the color category of object.
Wherein, in described step 2, by obtaining described color information and described positional information in conjunction with shape library and high-level programming language.
Wherein, described step 3 further comprises, the color information by dynamic palette compression algorithm one frame picture also obtains corresponding palette, and the data in described palette are dynamic data, and described dynamic data changes according to the difference of every frame picture.
Wherein, the physical arrangement of described display screen is LED display in described swept-volume three-dimensional display system and the physical connection structure of rotation platform.
Wherein, described circuit structure is LED display circuit in described swept-volume three-dimensional display system and the circuit connection structure of control circuit; Brightness, color and the synchronizing information of LED display described in described control circuit control.
The present invention adopts the method in conjunction with professional software and high-level programming language.Can meet large complicated graphical modeling, can facilitate again late time data processing, improve efficiency and the quality of modeling, for large-scale rotary system provides the scheme of obtaining of data source.
Method of the present invention has adopted the method for real-time generation palette.According to the difference of every two field picture, real-time update palette information, had both guaranteed that selectable color gamut was 24bit true color, had enriched the color category that can select, had compressed data volume simultaneously, had improved efficiency.
The present invention is in conjunction with the electrical structure of rotary screen, generated data source.This data source can, in rotary screen platform application, form the 3-D view of true color, and having overcome can only be in the defect of the software platform emulation three-dimensional model of computing machine.For showing, the real tri-dimension of swept-volume carries the solution route that has encircleed data source.
Accompanying drawing explanation
Fig. 1 represents the process flow diagram based on swept-volume three-dimensional display system data source generation method;
Fig. 2 represents the concrete operations process flow diagram based on swept-volume three-dimensional display system data source generation method;
Fig. 3 is illustrated in software platform and utilizes high-level programming language simulation three-dimensional virtual scene.
Embodiment
In conjunction with following specific embodiments and the drawings, the present invention is described in further detail.Implement process of the present invention, condition, experimental technique etc., except the content of mentioning specially below, be universal knowledege and the common practise of this area, the present invention is not particularly limited content.
What Fig. 1 showed is based on swept-volume three-dimensional display system data source generation method, comprising:
Step 1: obtain 3-D display film source, reconstruction of three-dimensional virtual scene in computing machine or software platform.
3-D display film source can be obtained by modeling software, the real scene shooting of many camera lenses or tomoscan, in the present embodiment, play up and make software by three-dimensional animations such as 3dsMax, Maya, Blender and set up three-dimensional scenic, in computing machine or in software platform, generate the virtual three-dimensional scenic similar to real scene.The three-dimensional scenic generating can divide according to the judgement such as number and the color category complexity of the size of its three-dimensional scenic, contained object.Three-dimensional scenic is divided into complex scene and simple scenario according to complexity.Adopt corresponding modeling software to set up three-dimensional scenic according to the scene of different complexities.
Step 2: obtain positional information and color information from three-dimensional scenic.
The data of three-dimensional scenic mainly comprise model file and image information.In this model file, comprise the relevant information of three-dimensional scenic, the information of the three-dimensional scenics such as such as text creation information, scene information, material information, object information and gridding information.Image information is the pinup picture file (for example, BMP image) using in the time setting up three-dimensional scenic at modeling software.In computing machine or software platform, can build three-dimensional scene models by shape library and high-level programming language, shape library can be used the graphic package interface of OpenGL, high-level programming language can be taked OO Python or VC language, while setting up the model of three-dimensional scenic, can carry out big or small adjustment to the model of three-dimensional scenic according to the physics size of the LED display of swept-volume display system by computing machine or software platform.
In this step, by the above-mentioned model file of the derivation of professional modeling and image information.The three-dimensional scenic of rebuilding in conjunction with high-level programming language from OpenGL shape library, parse key message, key message is positional information and color information here.Wherein, positional information is the volume coordinate (X, Y, Z) of the point of component model in three-dimensional scenic.Color information is a little corresponding to the coordinate (U, V) in image information.By OpenCV vision storehouse in conjunction with pinup picture file acquisition color information.For example, call OpenCV vision storehouse and read in BMP image, pinup picture file coordinate (U, V) is corresponded to the pixel of BMP image, thereby obtain color information, by color information and positional information amalgamation.
Step 3: according to above-mentioned image information, adopt dynamic palette algorithm to compress data.
The display screen of three-dimensional display system is selected two-dimentional LED display, is covered with LED lamp in two-dimentional LED display, and two-dimentional LED display demonstrates different colors by a control chip control LED lamp.Whole LED display is spliced by multiple two-dimentional LED display, and by multiple control chip control, it shows, LED display is fixed on rotation platform.Rotation platform rotates one week, and LED display forms a two field picture.
The present invention adopts dynamic palette algorithm to every two field picture, choose and can represent that the N kind color of this two field picture writes in palette, in the time being switched to the image of next frame, again call palette algorithm, obtain and can represent that the N kind color of next frame image covers original palette, selectable color gamut like this is 24bit, and palette size corresponding to every two field picture is only N kind color, and this palette is dynamically, changes along with the difference of every two field picture.For example, pixel in image is 24bit true color, due to the restriction of transfer rate, need compress every two field picture, the result of compression is that every two field picture color is less than 16 kinds, from 24bit true color storehouse, choose and can represent that 16 kinds of colors of this two field picture create the palette of this two field picture, 0～15 numbering (being the index of 4bit) is externally provided, 24bit true color in palette that each numbering is corresponding, like this, the color information of each pixel of this two field picture is only 4bit index, the index information of each pixel and palette are now transferred to the control chip of LED, obtain real 24bit color information lightening LED lamp by control chip by index search palette.In the time of transmission next frame image, re-start the corresponding palette that palette algorithm obtains next frame image, the palette that upgrades former frame picture with the palette of next two field picture, so the data in palette change according to the difference of every frame picture, the data of palette are dynamic data.
Step 4: according to the circuit structure of three-dimensional display system display screen, generating three-dimensional display system data source.
Because LED display rotating 360 degrees forms a width solid space image, thus to model by angle section, by the point in model by rectangular coordinate (X, Y, Z) be transformed into cylindrical coordinates (R, θ, H), data are rearranged to the order of 359 degree by 0 degree.
The circuit structure of LED display comprises LED lamp and control circuit, and according to the design of hardware circuit, every control chip is controlled separately the demonstration of a slice LED lamp.Data are divided according to this hardware design, data correspondence is assigned to every control chip.
Preferably, completing steps two, step 3, with the basis of step 4 on, for guaranteeing that model and actual rotary screen agree with, and utilize respectively software platform to carry out simulating, verifying, the size of authentication image, the dense degree of point, after palette algorithm color situation, as shown in Figure 2.If there is mistake after the file that step 2, step 3, step 4 are obtained and data empirical tests, the step of makeing mistakes will be re-executed, the mistake of taking above-mentioned simulating, verifying effectively to occur in correction of data processing procedure.
Fig. 3 is for utilizing high-level programming language simulation three-dimensional virtual scene at software platform.Utilize Graphics Library in conjunction with high-level programming language, the file that professional software is derived carries out analytic trnasformation, the space three-dimensional image simulating at software platform.This 3-D view is made up of the point in space, and the information of each point comprises its positional information and color information.
The three-dimensional data DSN that the present invention generates, in conjunction with the physical arrangement of rotary screen, by image the rotation of LED screen display data sources, thereby obtains the true color 3-dimensional image based on swept-volume.
Protection content of the present invention is not limited to above embodiment.Do not deviating under the spirit and scope of inventive concept, variation and advantage that those skilled in the art can expect are all included in the present invention, and take appending claims as protection domain.
Claims (7)
1. one kind based on swept-volume three-dimensional display system data source generation method, it is characterized in that, comprising:
Step 1: obtain 3-D display film source, reconstruction of three-dimensional scene;
Step 2: positional information and the color information of obtaining model from described three-dimensional scenic;
Step 3: adopt color information described in dynamic palette compression algorithm;
Step 4: reconfigure described positional information and described color information according to the physical arrangement of three-dimensional display system and circuit structure, generating three-dimensional display system data source.
2. according to claim 1ly it is characterized in that based on swept-volume three-dimensional display system data source generation method, in described step 1, utilize modeling software, the real scene shooting of many camera lenses or tomoscan to obtain described 3-D display film source.
3. according to claim 1 based on swept-volume three-dimensional display system data source generation method, it is characterized in that, described step 1 further comprises, when reconstruction of three-dimensional scene, described three-dimensional scenic is classified according to complexity, described classification according to comprising the size of described three-dimensional scenic, number and the color category of object.
4. according to claim 1ly it is characterized in that based on swept-volume three-dimensional display system data source generation method, in described step 2, by obtaining described color information and described positional information in conjunction with shape library and high-level programming language.
5. according to claim 1 based on swept-volume three-dimensional display system data source generation method, it is characterized in that, described step 3 further comprises, color information by dynamic palette compression algorithm one frame picture also obtains corresponding palette, data in described palette are dynamic data, and described dynamic data changes according to the difference of every frame picture.
6. according to claim 1ly it is characterized in that based on swept-volume three-dimensional display system data source generation method, the physical arrangement of described display screen is LED display in described swept-volume three-dimensional display system and the physical connection structure of rotation platform.
7. according to claim 1ly it is characterized in that based on swept-volume three-dimensional display system data source generation method, described circuit structure is LED display circuit in described swept-volume three-dimensional display system and the circuit connection structure of control circuit; Brightness, color and the synchronizing information of LED display described in described control circuit control.
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| CN104902255A (en) * | 2015-03-05 | 2015-09-09 | 华东师范大学 | Data source generation method based on volume scanning three-dimensional display system |
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| WO2022052020A1 (en) * | 2020-09-11 | 2022-03-17 | 京东方科技集团股份有限公司 | Data generation method, driving method, computer device, display device and system |
| CN114731390A (en) * | 2020-09-11 | 2022-07-08 | 京东方科技集团股份有限公司 | Data generation method, driving method, computer device, display device and system |
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Application publication date: 20140618 |