CN103354616A - Method and system for realizing three-dimensional display on two-dimensional display - Google Patents
Method and system for realizing three-dimensional display on two-dimensional display Download PDFInfo
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Abstract
The invention provides a method and a system for realizing three-dimensional display on a two-dimensional display. The method includes steps of obtaining position information of eyes of a viewer relative to the two-dimensional display; obtaining images on a projection plane through performing perspective projection operation of a 3D object by taking the above position information as parameters; and displaying the above images on the two-dimensional display. According to the invention, the position information of the eyes of the viewers relative to the display is taken as the parameters for performing perspective projection operation of the 3D object and the images on the projection plane are obtained and displayed on the display, so that a three-dimensional visual effect is realized. The system for realizing three-dimensional display on the two-dimensional display is simple and easy to realize only by adopting the common display and a circuit system and no special glasses or displays are needed. The system for realizing three-dimensional display on the two-dimensional display is convenient to use and easy to promote.
Description
Technical field
The present invention relates to image and process and the Display Technique field, in particular to a kind of method and system of realizing stereo display in flat-panel screens.
Background technology
Along with the development of science and technology, stereo display technique is more and more favored by more people, improves quality of the life.The third dimension producing method of prior art Stereo display has multiple, the three-dimensional display that discloses of No. 201010169499.0,201010219921.9 or No. 200810184861.4 Chinese patents for example, the anaglyph spectacles and the three-dimensional display system thereof that disclose just like the 201110121624.5th, 201110209026.3 or No. 201080058671.3 Chinese patent again, but these modes all need to use special glasses or special display, can't realize in existing regular display.
Compare with existing third dimension production method, developing a kind of can be necessary in the common relief technology of flat-panel screens generation.
Summary of the invention
The present invention aims to provide a kind of method and system of realizing stereo display in flat-panel screens, can adjust the demonstration image according to beholder's real time position, makes the beholder produce real-time third dimension.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is as follows:
A kind of method that realizes stereo display in flat-panel screens is characterized in that, may further comprise the steps:
Obtain beholder's eyes with respect to the positional information of flat-panel screens;
Take aforementioned location information as parameter the 3D object is carried out the perspective projection computing, had the graphical information of 3D object, then carry out computing at image processor 2 interior real time positions according to eyes, obtain the image of projection plane; And the image of projection plane carried out coordinate transform, and it is transformed into screen coordinate system from the view plane coordinate system, the earlier figures picture is shown in flat-panel screens.
Further, in the preceding method, image by the image collecting device collection beholder that above flat-panel screens, arranges, the image that collects is sent to an image processor, this image processor obtains human eye with respect to the positional information of flat-panel screens based on recognition of face and human eye location algorithm.
Further, described image processor receives the image information from image collecting device, analyze and recognition image in people's face and definite its position, obtain the position of beholder's eyes, obtain again the distance of observer's eyes and flat-panel screens by the pixel distance between two.
Further, take aforementioned location information as parameter the 3D object is carried out the perspective projection computing by second image processor, obtain the image of projection plane, its operation method is: perspective projection is made of viewpoint and view plane, viewpoint is the position of beholder's eyes, and view plane is plane, display place, when the M point be on the 3D object a bit, E is the position of beholder's glasses, i.e. viewpoint; The coordinate that E is ordered is (X, Y, Z), and the coordinate that M is ordered is (a, b, c); The intersection point of line segment ME on screen is D, and the coordinate of D point on screen is (x, y); Then:
x=(c/(c+Z))*Y+(Z/(c+Z))*b
Y=(c/ (c+Z)) * Y+ (Z/ (c+Z)) * b, i.e. linear coordinate mapping algorithm.
Another aspect of the present invention also proposes a kind of system that realizes stereo display in flat-panel screens, comprise an image collecting device, the first image processor, the second image processor and flat-panel screens, wherein, described image collecting device is used for gathering a beholder image and transferring to described the first image processor, described image is identified and analyzed to the first image processor to obtain beholder's eyes with respect to the positional information of flat-panel screens, described second graph processor carries out the perspective projection computing take described positional information as parameter to the 3D object, obtain the image of projection plane, and with this image transmitting to described flat-panel screens to show.
Further, aforementioned image collecting device is a camera that is installed in the flat-panel screens top.
Further, aforementioned the first image processor carries out recognition of face go forward side by side identification and the location of pedestrian's eye to the image of aforementioned image collecting device collection.
Further, aforementioned the first graphic process unit adopts a kind of identification and the location of carrying out beholder's eyes in edge extracting method, template matches and the gray-level projection method.
Further, aforementioned the second image processor carries out the perspective projection computing take aforementioned location information as parameter to the 3D object, obtains the image of projection plane, its operation method such as above-mentioned.By above technical scheme of the present invention as can be known, beneficial effect of the present invention is 3D object to be carried out perspective projection computing with respect to the positional information of display as parameter take beholder's eyes, obtain the image of projection plane and show at display, to represent the 3D visual effect, its system is simple and easy to realize, only need a regular display and Circuits System just can realize, need not Special spectacles or display, easy to use, be easy to promote, especially can be widely used in a plurality of applications that third dimension had requirement such as science and education, advertisement and game.
Description of drawings
Fig. 1 is the structural representation of the system module of preferred embodiment of the present invention.
Fig. 2 is the implementation method schematic flow sheet of realizing stereo display in flat-panel screens.
Fig. 3 is the principle schematic of perspective projection.
Fig. 4 is beholder and location of displays relation principle figure.
Fig. 5 is for being linear coordinate mapping algorithm schematic diagram.
Embodiment
In order more to understand technology contents of the present invention, especially exemplified by specific embodiment and cooperate appended graphic being described as follows.
As shown in Figure 1, according to preferred embodiment of the present invention, realize the system of stereo display in flat-panel screens, comprise an image collecting device 1, the first image processor 2, the second image processor 3 and flat-panel screens 4, wherein, described image collecting device 1 is used for gathering a beholder image and transferring to described the first image processor 2, described image is identified and analyzed to the first image processor to obtain beholder's eyes with respect to the positional information of flat-panel screens, described second graph processor 3 carries out the perspective projection computing take described positional information as parameter to the 3D object, obtain the image of projection plane, and with this image transmitting to described flat-panel screens to show.
Below with reference to realization flow shown in Figure 2 and describe realization principle and the process of the present embodiment in detail in conjunction with Fig. 3,4.
With reference to figure 3,4, image collecting device 1 is a camera that is installed in the flat-panel screens top.Recognition of face is the basis of eye recognition, and the image of 2 pairs of aforementioned image collecting device collections of aforementioned the first image processor carries out recognition of face go forward side by side identification and the location of pedestrian's eye.Wherein, face recognition technology comprises collection, recognition of face preliminary treatment, people's face location of facial image etc., the recognition of face here all is the recognition of face of broad sense, mainly refer to the location of people's face, people's face catches in other words conj.or perhaps, namely from image, detect people's face and separate, and do not carry out the identification based on Facial Feature Analysis.
The identification of human eye and the method for location are a lot, and common method comprises edge extracting method, template matching method and gray-level projection method etc.The edge extracting method is according to the marginal information of image, by Hough transformation monitoring eyeball; Template matching method belongs to mode identification technology, and it utilizes the right and left eyes template to mate according to the priori of image and relevant pattern recognition; The gray-level projection method according to image in the horizontal direction with vertical direction on the peak-to-valley value of integral projection curve judge the position of human eye.
In the present embodiment, a kind of identification and location of carrying out beholder's eyes that the first image processor 2 adopts in edge extracting method, template matches and the gray-level projection method.
Perspective projection (Perspective Projection), be called again perspective view, a kind of by draw to obtain the method near the visual effect of true three-dimension object at two dimensional surface, it meets people's's " near big and far smaller " visual psychology custom, has a series of see-through property such as disappear sense, distance perspective and reflects the characteristics such as space lifelike image of object.With reference to the schematic diagram of figure 3, the perspective projection algorithm is a kind of 3D-2D algorithm, and it is input as 3D object and position of human eye, is output as the image on the projection plane, is a kind of geometric algorithm.
In the present embodiment, aforementioned the second image processor 3 carries out the perspective projection computing take aforementioned location information as parameter to the 3D object, obtains the image of projection plane, i.e. two dimensional image.
With reference to beholder shown in Figure 4 and the schematic diagram of location of displays relation, set up three-dimensional system of coordinate, take the summit, the lower left corner of display 4 as the origin of coordinates, the centre position that the beholder is two 5 is designated as the A point, and the coordinate of A point in coordinate system is (x, y, z), the distance of A point and display is z.As shown in the figure, be provided with an image collecting device 1 above display 4, the first-class image sensing device of for example making a video recording is used for gathering the image that comprises beholder face, and sends the image that photographs to first image processor 2.
The first image processor 2 receives and analyzes the image information from image collecting device, people's face in analysis and the recognition image is also determined its position, thereby obtain the position of beholder's eyes, and obtain beholder's eyes with respect to the positional information of display 4 according to certain algorithm principle, for example obtain observer's eyes by the pixel distance between two and display 4(is view plane) distance.The first image processor 2 transfers to the second image processor 3 with the positional information of beholder's eyes.
The second image processor 3 carries out perspective projection computing as parameter to the 3D object with the positional information of beholder's eyes, obtains the image of projection plane, and this image is shown at display 4.
This shows, the stereo display implementation procedure of the present embodiment is by placing the image collecting device collection beholder face of display top, the image that shooting is obtained sends the first image processor to, the first image processor utilizes the eye recognition algorithm, finds the position of beholder's eyes and positional information is transferred to the second image processor.The second image processor carries out perspective projection computing as parameter to the 3D object with beholder's eye position, obtains the image of projection plane, and this image is shown at display.
Concerning the beholder, the eye position of following oneself owing to the image demonstration of display changes, and can produce very strong third dimension.
In sum, the technical scheme of the present embodiment to 3D object is carried out perspective projection computing with respect to the positional information of display as parameter take beholder's eyes, obtain the image of projection plane and show at display, to represent the 3D visual effect, its system is simple and easy to realize, only need a regular display and Circuits System just can realize, need not Special spectacles or display, easy to use, be easy to promote, especially can be widely used in a plurality of applications that third dimension had requirement such as science and education, advertisement and game.
Algorithm schematic diagram 5 is as follows, and among the figure, the M point is a bit on the 3D object, and E is the position of beholder's glasses, i.e. viewpoint.The coordinate that E is ordered is (X, Y, Z), and the coordinate that M is ordered is (a, b, c).The intersection point of line segment ME on screen is D, and the coordinate of D point on screen is (x, y).Have so:
x=(c/(c+Z))*Y+(Z/(c+Z))*b
y=(c/(c+Z))*Y+(Z/(c+Z))*b
More than be the linear coordinate mapping algorithm.
Although the present invention discloses as above with preferred embodiment, so it is not to limit the present invention.The persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (9)
1. a method that realizes stereo display in flat-panel screens is characterized in that, may further comprise the steps:
Obtain beholder's eyes with respect to the positional information of flat-panel screens;
Take aforementioned location information as parameter the 3D object is carried out the perspective projection computing, had the graphical information of 3D object, then carry out computing at image processor 2 interior real time positions according to eyes, obtain the image of projection plane; And the image of projection plane carried out coordinate transform, and it is transformed into screen coordinate system from the view plane coordinate system, the earlier figures picture is shown in flat-panel screens.
2. method according to claim 1, it is characterized in that, in the preceding method, image by the image collecting device collection beholder that above flat-panel screens, arranges, the image that collects is sent to an image processor, this image processor obtains human eye with respect to the positional information of flat-panel screens based on recognition of face and human eye location algorithm.
3. method according to claim 2, it is characterized in that, in the preceding method, described image processor receives the image information from image collecting device, people's face in analysis and the recognition image is also determined its position, obtain the position of beholder's eyes, obtain again the distance of observer's eyes and flat-panel screens by the pixel distance between two.
4. method according to claim 1, it is characterized in that, in the preceding method, take aforementioned location information as parameter the 3D object is carried out the perspective projection computing by second image processor, obtain the image of projection plane, its operation method is: perspective projection is made of viewpoint and view plane, viewpoint is the position of beholder's eyes, and view plane is plane, display place, when the M point be on the 3D object a bit, E is the position of beholder's glasses, i.e. viewpoint; The coordinate that E is ordered is (X, Y, Z), and the coordinate that M is ordered is (a, b, c); The intersection point of line segment ME on screen is D, and the coordinate of D point on screen is (x, y); Then:
x=(c/(c+Z))*Y+(Z/(c+Z))*b
Y=(c/ (c+Z)) * Y+ (Z/ (c+Z)) * b more than is the linear coordinate mapping algorithm.
5. system that realizes stereo display in flat-panel screens, it is characterized in that, comprise an image collecting device, the first image processor, the second image processor and flat-panel screens, wherein, described image collecting device is used for gathering a beholder image and transferring to described the first image processor, described image is identified and analyzed to the first image processor to obtain beholder's eyes with respect to the positional information of flat-panel screens, described second graph processor carries out the perspective projection computing take described positional information as parameter to the 3D object, obtain the image of projection plane, and with this image transmitting to described flat-panel screens to show.
6. system according to claim 5 is characterized in that, aforementioned image collecting device is a camera that is installed in the flat-panel screens top.
7. system according to claim 6 is characterized in that, aforementioned the first image processor obtains human eye with respect to the positional information of flat-panel screens based on recognition of face and human eye location algorithm.
8. system according to claim 7 is characterized in that, aforementioned the first graphic process unit adopts a kind of identification and the location of carrying out beholder's eyes in edge extracting method, template matches and the gray-level projection method.
9. system according to claim 7, it is characterized in that, aforementioned the second image processor carries out the perspective projection computing take aforementioned location information as parameter to the 3D object, obtain the image of projection plane, its operation method is the linear coordinate mapping algorithm: the M point is a bit on the 3D object, E is the position of beholder's glasses, i.e. viewpoint.The coordinate that E is ordered is (X, Y, Z), and the coordinate that M is ordered is (a, b, c).The intersection point of line segment ME on screen is D, and the coordinate of D point on screen is (x, y).Have so:
x=(c/(c+Z))*Y+(Z/(c+Z))*b
y=(c/(c+Z))*Y+(Z/(c+Z))*b。
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| CN106874982A (en) * | 2017-01-17 | 2017-06-20 | 山东大学 | Towards the self-definition model stereoscopic two-dimensional code generating method and system of 3D printing |
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| CN108269232A (en) * | 2018-02-24 | 2018-07-10 | 夏云飞 | A kind of method for transformation of bore hole 3D pictures and the conversion method of bore hole 3D panoramic pictures |
| CN110390686A (en) * | 2019-07-24 | 2019-10-29 | 张天 | Naked eye 3D display method and system |
| CN113421344A (en) * | 2021-05-28 | 2021-09-21 | 互动视创科技(武汉)有限责任公司 | Immersive film watching device and method |
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