CN105676470A - 3D scene vision spatial resolution enhancing method and system - Google Patents
3D scene vision spatial resolution enhancing method and system Download PDFInfo
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- CN105676470A CN105676470A CN201610173980.4A CN201610173980A CN105676470A CN 105676470 A CN105676470 A CN 105676470A CN 201610173980 A CN201610173980 A CN 201610173980A CN 105676470 A CN105676470 A CN 105676470A
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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Abstract
The invention relates to a 3D scene vision spatial resolution enhancing method and system. The method comprises: rendering a specific 3D scene, and obtaining different visual angle metagraphs of the 3D scene, wherein the different visual angle metagraphs form a light field plane; obtaining the rendering information of the high frequency part of the projection light of the light field plane, and obtaining the rendering frames of high resolution; decomposing the rendering frames of high resolution into the subsequence frames of low resolution; and displaying the subsequence frames of low resolution in a high refresh rate. The method and system decompose the rendering frames of high resolution of the 3D scene into the subsequence frames of low resolution, display the subsequence frames of low resolution in a high refresh rate, utilize eye integral characteristics to fuse the subsequence frames, and enhance 3D scene vision spatial resolution and provide realistic simulating 3D effects under the condition of not increasing hardware cost.
Description
Technical field
The present invention relates to 3D Display Technique field, particularly relate to the visual spatial resolution enhancement method and system of a kind of three-dimensional scenic.
Background technology
The object that human eye is seen in nature is all the form of expression of 3D, but is currently being widely used display and can only provide plane picture, it is impossible to provide real visual experience. Along with the development of 3D vision technique, stereo display increasingly becomes the key of following Display Technique development. Human eye can perceive three dimensions from the retinal image of two-dimensional space plane thus producing degree of depth intuition, depends on the hint of Depth cue. The three-dimensional scenic display packing commonly used at present includes based on the stereoscopic imaging technology of binocular parallax, holographic imaging technology and integration imaging technology etc.
Technology based on the three-dimensional display system of binocular parallax realizes simple with hardware requirement, utilizes split screen display and lens to realize, is at present can widely used 3D Display Technique. Its principle is in that to provide the anaglyph of correspondence by coloured filter, polaroid and electrical switch passage respectively for observer's right and left eyes, uses various passage respectively the image of left eye and right eye to be presented to eyes, for instance VR glasses OculusRift etc. But this stereo display technique can only meet the Depth cue based on binocular parallax, it is impossible to provide the 3D visual experience with physical third dimension.
Holographic imaging technology has record and reproduces two processes. First with the principle of interference amplitude by light wave and phase information record in media as well, according to diffraction principle when the reproducible three-dimensional scenic of light-wave irradiation medium. Owing to remaining whole amplitudes and the phase information of original Object light wave, therefore reconstruction of scenes and former scene have identical three-dimensional character, using the teaching of the invention it is possible to provide complete Depth cue. But owing to the recording process of laser hologram requires to adopt coherent source, often operating under dark room conditions, also require that equipment has the stability of height, these all greatly limit its range of application simultaneously. Current laser holography is only limitted to record static object, and the color gamut shown is limited, thus holographic 3D shows the display system that the video communication not being suitable for requirements at the higher level and needs process in real time.
Integration imaging technology has record equally and reproduces two processes. First with microlens array to spatial scene record by imaging, CCD is positioned at lens arra focal plane place and obtains light field, and each lenslet generates the imaging i.e. unit figure of corresponding different visual angles three-dimensional scenic. Then utilizing and have same parameter microlens array, according to light path principle of reversibility, the light-ray condensing reduction that microlens array transmits unit figure, thus reconstructing scene in the front of lens arra. Integration imaging technology can meet major part Depth cue, obtains light field by three-dimensional scenic is rendered, it is possible to directly utilize microlens array and realize the reproducing processes of three-dimensional scenic. But the first figure presenting different visual angles on the screen at the same can cause that visual spatial resolution is severely limited, and presents unsharp 3-D effect simultaneously.
Summary of the invention
The technical problem to be solved is: the existing visual spatial resolution of three-dimensional scenic display packing is low, hardware condition is required high problem.
For solving above-mentioned technical problem, one aspect of the present invention proposes the resolution enhancement methods of a kind of three-dimensional scenic, and the method includes:
Specific three-dimensional scenic being rendered, obtains the unit figure of the different visual angles of described three-dimensional scenic, the element pattern of described different visual angles becomes light field plane;
Obtain the spatial cue of the HFS of the throw light of described light field plane, obtain and high-resolution render frame;
The described high-resolution frame that renders is decomposed into the subsequence frame of low resolution;
The subsequence frame of described low resolution is shown with high refreshing frequency.
Alternatively, described specific three-dimensional scenic is rendered includes:
In microlens array, each lenticular photocentre position is ray origin, specific three-dimensional scenic is carried out ray tracing and renders.
Alternatively, the spatial cue of the HFS of the throw light of the described light field plane of described acquisition includes:
The throw light of described light field plane is carried out over-sampling, obtains the spatial cue of the HFS of the throw light of described light field plane.
Alternatively, described the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution, including:
Set up human eye vision response model, according to described human eye vision response model, the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution.
Alternatively, described high refreshing frequency is more than human eye critical flicker frequency.
Another aspect of the present invention proposes the enhancing system of a kind of three-dimensional scenic resolution, and this system includes:
Three-dimensional scenic rendering unit, for specific three-dimensional scenic is rendered, obtains the unit figure of the different visual angles of described three-dimensional scenic, and the element pattern of described different visual angles becomes light field plane;
High-resolution renders frame acquiring unit, obtains the spatial cue of the HFS of the throw light of described light field plane, obtains and high-resolution renders frame;
Subsequence frame acquiring unit, is decomposed into the subsequence frame of low resolution by the described high-resolution frame that renders;
Subsequence frame display unit, for showing the subsequence frame of described low resolution with high refreshing frequency.
Alternatively, described three-dimensional scenic rendering unit, it is further used for: in microlens array, each lenticular photocentre position is ray origin, specific three-dimensional scenic is carried out ray tracing render, obtaining the unit figure of the different visual angles of described three-dimensional scenic, the element pattern of described different visual angles becomes light field plane.
Alternatively, described high-resolution renders frame acquiring unit, is further used for: the throw light of described light field plane is carried out over-sampling, obtains the spatial cue of the HFS of the throw light of described light field plane, obtains and high-resolution renders frame.
Alternatively, described subsequence frame acquiring unit, it is further used for: set up human eye vision response model, according to described human eye vision response model, the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution.
Alternatively, described high refreshing frequency is more than human eye critical flicker frequency.
The Enhancement Method of the visual spatial resolution of three-dimensional scenic provided by the invention and system, it is decomposed into the subsequence frame of low resolution by obtaining the high-resolution frame that renders of three-dimensional scenic, and the subsequence frame of described low resolution is shown with high refreshing frequency, the integral characteristic utilizing human eye realizes the fusion of subsequence frame, when not increasing hardware spending, enhance the visual spatial resolution of three-dimensional scenic, it is provided that intend genuine 3D effect.
Accompanying drawing explanation
Being more clearly understood from the features and advantages of the present invention by reference accompanying drawing, accompanying drawing is schematic and should not be construed as and the present invention is carried out any restriction, in the accompanying drawings:
Fig. 1 illustrates the schematic flow sheet of the visual spatial resolution enhancement method of the three-dimensional scenic of one embodiment of the invention;
Fig. 2 a illustrates that the ray tracing of one embodiment of the invention renders the schematic diagram of the light projection method of light field; Fig. 2 b illustrates the schematic diagram rendering the light field plane obtained of one embodiment of the invention;
Fig. 3 illustrates the schematic diagram of the spatial cue of the HFS obtaining throw light of one embodiment of the invention;
Fig. 4 illustrates the schematic flow sheet of the enhancing system of the visual spatial resolution of the three-dimensional scenic of one embodiment of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention is described in detail.
Fig. 1 illustrates the schematic flow sheet of the visual spatial resolution enhancement method of the three-dimensional scenic of one embodiment of the invention. As it is shown in figure 1, the visual spatial resolution enhancement method of the three-dimensional scenic of this embodiment, including:
S11: specific three-dimensional scenic is rendered, obtains the unit figure of the different visual angles of described three-dimensional scenic, and the element pattern of described different visual angles becomes light field plane;
S12: obtain the spatial cue of the HFS of the throw light of described light field plane, obtains and high-resolution renders frame;
S13: the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution;
S14: show the subsequence frame of described low resolution with high refreshing frequency.
The Enhancement Method of the visual spatial resolution of three-dimensional scenic of the present embodiment, it is decomposed into the subsequence frame of low resolution by obtaining the high-resolution frame that renders of three-dimensional scenic, and the subsequence frame of described low resolution is shown with high refreshing frequency, the integral characteristic utilizing human eye realizes the fusion of subsequence frame, when not increasing hardware spending, enhance the visual spatial resolution of three-dimensional scenic, it is provided that intend genuine 3D effect.
In the optional embodiment of one, described specific three-dimensional scenic is rendered includes:
In microlens array, each lenticular photocentre position is ray origin, specific three-dimensional scenic is carried out ray tracing and renders.
Fig. 2 a illustrates that the ray tracing of one embodiment of the invention renders the schematic diagram of the light projection method of light field; Fig. 2 b illustrates the schematic diagram rendering the light field plane obtained of one embodiment of the invention. Tradition ray tracing being rendered framework be extended, in microlens array, each lenticular photocentre position renders for ray origin, and the element pattern generating different visual angles becomes light field plane, unit figure and lenticule one_to_one corresponding.
It should be noted that ray tracing renders light field except considering the verity of ray tracing technology rendering effect, rendering result can also be obtained by disposable throw light simultaneously for various visual angles light field plane. Specifically, the starting point of throw light be set to corresponding microlens array feel terribly worried array time, can render from array throw light simultaneously of feeling terribly worried and obtain and lenticule unit's image array one to one, cover lenticule to observe, realized the reproducing processes of integration imaging principle by light path principle of reversibility, visually restore 3-D scene.
Further, the spatial cue of the HFS of the throw light of the described light field plane of described acquisition includes:
The throw light of described light field plane is carried out over-sampling, obtains the spatial cue of the HFS of the throw light of described light field plane.
Generally in ray tracing render process, throw light carries out over-sampling can reduce sawtooth effect, utilizes same principle that throw light is carried out over-sampling and can obtain the spatial cue of HFS.
Fig. 3 illustrates the schematic diagram of the spatial cue of the HFS obtaining throw light of one embodiment of the invention. As it is shown on figure 3, to improve 4 resolutions for target, the light of a pixel projection is obtained sub-pix information (A, B, C, D are for four sub-pixs) with 4 times of over-samplings; When not increasing hardware spending, light projection also can be carried out frame by frame for changing over three-dimensional scenic slowly.
It should be noted that owing to monitor resolution currently used in light field display system is limited, the light field plane presenting various visual angles on a display plane inevitably limits the resolution of unit figure simultaneously. Assuming that a pixel only projects a light, the high-frequency information of unit figure will be lost, and now obtaining unit's figure resolution is M × N. Balance ray tracing renders amount of calculation and the quality rendering image, and selecting to improve display resolution 4 times is target. As it is shown on figure 3, by throw light is carried out over-sampling, it is possible to the resolution obtaining rendering result reaches 2M × 2N, and each pixel is divided into 4 subpixel regions and projects one or more light.
Further, described the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution, including:
Set up human eye vision response model, according to described human eye vision response model, the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution.
It should be noted that according to Talbert-pula holder law, when the mean flow rate that display frequency exceedes critical flicker frequency and bright light is identical with the brightness stablizing light, human eye will produce the sensation merged, it is impossible to distinguishes flicker; According to this characteristic, human eye vision response is modeled, it is thus achieved that human eye response integral function under high frame per second state, high-resolution rendering result is decomposed according to function, improve 4 times with resolution and obtain 2 frame low resolution subsequence frames for target.
In actual applications, due to the restriction of hardware display platform resolution, it is thus achieved that high-resolution rendering result can not directly display out. Known when image pixel be in high frequency change state time, neighbor is integrated by human visual system in time domain, thus visually producing new pixel value. Utilizing pixel sub-pix displacement under high frequency state, observer can obtain the high resolution vision comprising sub-pix information and experience. When refreshing frequency is close to critical flicker frequency, the response that Rapid Variable Design is made by human eye is negligible, and now retinal responses can be approximated to be pixel value limited weighted integral over time and space. Assume that retina perception cell is uniformly distributed, when retina perceptron response coupling high-resolution renders frame, it is possible to by retinal responses function, high-resolution is rendered frame and be decomposed into low resolution subsequence frame. During to improve resolution 4 times for target, can simplify integration weights is 0.5, obtains following relational expression:
Wherein, Hp(x, y) represent be positioned at (x, y) place renders the high-resolution pixel value obtained,Represent that t framing bit is in (x, low-resolution pixel value y).
Following double; two Matrix with Central Symmetry equation form can be expressed as:
H=W1aL1W1b+W2aL2W2b
Wherein, H is the matrix form of higher resolution frame
Wherein, W1a、W1b、W2aAnd W2bIt it is all the expression matrix form of weights.
Can try to achieve and decompose the two frame continuous print low resolution that obtain by solving above-mentioned equation and render frame L1And L2。
Further, described high refreshing frequency is more than human eye critical flicker frequency.
In actual applications, the refresh rate of regular display is 60Hz, and being decomposed into subsequence frame display speed during 2 frame is 30Hz, close to human eye critical flicker frequency; If using 120Hz height refresh rate displays to can be analyzed to 3 frames, subsequence display speed is that 40Hz approaches human eye flicker frequency more.
The visual spatial resolution enhancement method of the three-dimensional scenic of the present embodiment, utilizes the ray tracing technology improved to render multi-view image, obtains the high-resolution with large viewing when not increasing hardware spending and renders frame; Utilize human visual system to be modeled simultaneously, high-resolution is rendered frame and is decomposed into the subsequence frame of low resolution according to retina reaction functions; Last with high refresh rate display subsequence frame, the integral characteristic realization fusion utilizing human eye so that observer forms the visual effect with higher spatial resolution. Than existing design, the present invention can effectively overcome the problem that 3D light field display system causes effective resolution to decline owing to presenting multi-view image simultaneously, utilizes human visual system's characteristic to be effectively improved visual spatial resolution under existing hardware level.
Fig. 4 illustrates the schematic flow sheet of the enhancing system of the visual spatial resolution of the three-dimensional scenic of one embodiment of the invention. As shown in Figure 4, the enhancing system of the visual spatial resolution of the three-dimensional scenic of this embodiment includes:
Three-dimensional scenic rendering unit 41, for specific three-dimensional scenic is rendered, obtains the unit figure of the different visual angles of described three-dimensional scenic, and the element pattern of described different visual angles becomes light field plane;
High-resolution renders frame acquiring unit 42, obtains the spatial cue of the HFS of the throw light of described light field plane, obtains and high-resolution renders frame;
Subsequence frame acquiring unit 43, is decomposed into the subsequence frame of low resolution by the described high-resolution frame that renders;
Subsequence frame display unit 44, for showing the subsequence frame of described low resolution with high refreshing frequency.
In the optional embodiment of one, described three-dimensional scenic rendering unit, it is further used for: in microlens array, each lenticular photocentre position is ray origin, specific three-dimensional scenic is carried out ray tracing render, obtaining the unit figure of the different visual angles of described three-dimensional scenic, the element pattern of described different visual angles becomes light field plane.
Described high-resolution renders frame acquiring unit, is further used for: the throw light of described light field plane is carried out over-sampling, obtains the spatial cue of the HFS of the throw light of described light field plane, obtains and high-resolution renders frame.
Described subsequence frame acquiring unit, is further used for: set up human eye vision response model, according to described human eye vision response model, the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution.
Described high refreshing frequency is more than human eye critical flicker frequency.
The visual spatial resolution enhancement system of the three-dimensional scenic described in the present embodiment may be used for performing said method embodiment, and its principle is similar with technique effect, repeats no more herein.
The Enhancement Method of three-dimensional scenic resolution provided by the invention and system, it is decomposed into the subsequence frame of low resolution by obtaining the high-resolution frame that renders of three-dimensional scenic, and the subsequence frame of described low resolution is shown with high refreshing frequency, the integral characteristic utilizing human eye realizes the fusion of subsequence frame, when not increasing hardware spending, enhance the visual spatial resolution of three-dimensional scenic, it is provided that intend genuine 3D effect.
Although being described in conjunction with the accompanying embodiments of the present invention, but those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such amendment and modification each fall within the scope being defined by the appended claims.
Claims (10)
1. the visual spatial resolution enhancement method of a three-dimensional scenic, it is characterised in that including:
Specific three-dimensional scenic being rendered, obtains the unit figure of the different visual angles of described three-dimensional scenic, the element pattern of described different visual angles becomes light field plane;
Obtain the spatial cue of the HFS of the throw light of described light field plane, obtain and high-resolution render frame;
The described high-resolution frame that renders is decomposed into the subsequence frame of low resolution;
The subsequence frame of described low resolution is shown with high refreshing frequency.
2. the visual spatial resolution enhancement method of three-dimensional scenic according to claim 1, it is characterised in that described specific three-dimensional scenic is rendered includes:
In microlens array, each lenticular photocentre position is ray origin, specific three-dimensional scenic is carried out ray tracing and renders.
3. the visual spatial resolution enhancement method of three-dimensional scenic according to claim 1, it is characterised in that the spatial cue of the HFS of the throw light of the described light field plane of described acquisition includes:
The throw light of described light field plane is carried out over-sampling, obtains the spatial cue of the HFS of the throw light of described light field plane.
4. the visual spatial resolution enhancement method of three-dimensional scenic according to claim 1, it is characterised in that described the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution, including:
Set up human eye vision response model, according to described human eye vision response model, the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution.
5. the visual spatial resolution enhancement method of three-dimensional scenic according to claim 1, it is characterised in that described high refreshing frequency is more than human eye critical flicker frequency.
6. the visual spatial resolution enhancement system of a three-dimensional scenic, it is characterised in that including:
Three-dimensional scenic rendering unit, for specific three-dimensional scenic is rendered, obtains the unit figure of the different visual angles of described three-dimensional scenic, and the element pattern of described different visual angles becomes light field plane;
High-resolution renders frame acquiring unit, obtains the spatial cue of the HFS of the throw light of described light field plane, obtains and high-resolution renders frame;
Subsequence frame acquiring unit, is decomposed into the subsequence frame of low resolution by the described high-resolution frame that renders;
Subsequence frame display unit, for showing the subsequence frame of described low resolution with high refreshing frequency.
7. the visual spatial resolution enhancement system of three-dimensional scenic according to claim 6, it is characterized in that, described three-dimensional scenic rendering unit, it is further used for: in microlens array, each lenticular photocentre position is ray origin, specific three-dimensional scenic is carried out ray tracing render, obtaining the unit figure of the different visual angles of described three-dimensional scenic, the element pattern of described different visual angles becomes light field plane.
8. the visual spatial resolution enhancement system of three-dimensional scenic according to claim 6, it is characterized in that, described high-resolution renders frame acquiring unit, it is further used for: the throw light of described light field plane is carried out over-sampling, obtain the spatial cue of the HFS of the throw light of described light field plane, obtain and high-resolution render frame.
9. the visual spatial resolution enhancement system of three-dimensional scenic according to claim 6, it is characterized in that, described subsequence frame acquiring unit, it is further used for: set up human eye vision response model, according to described human eye vision response model, the described high-resolution frame that renders is decomposed into the subsequence frame of low resolution.
10. the visual spatial resolution enhancement system of three-dimensional scenic according to claim 6, it is characterised in that described high refreshing frequency is more than human eye critical flicker frequency.
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| CN107274397A (en) * | 2017-06-13 | 2017-10-20 | 深圳市瑞云科技有限公司 | A kind of automatic identifying method of card frame |
| CN107527322A (en) * | 2017-09-27 | 2017-12-29 | 杭州群核信息技术有限公司 | Rendering intent, device, engine and storage medium |
| CN108495117A (en) * | 2018-03-29 | 2018-09-04 | 香港光云科技有限公司 | Hologram image various visual angles processing conversion, display methods and equipment |
| CN110036413A (en) * | 2016-12-23 | 2019-07-19 | 高通股份有限公司 | Blinkpunkt rendering in tiling framework |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110036413A (en) * | 2016-12-23 | 2019-07-19 | 高通股份有限公司 | Blinkpunkt rendering in tiling framework |
| CN110036413B (en) * | 2016-12-23 | 2023-06-02 | 高通股份有限公司 | Gaze point rendering in tiled architecture |
| CN107274397A (en) * | 2017-06-13 | 2017-10-20 | 深圳市瑞云科技有限公司 | A kind of automatic identifying method of card frame |
| CN107527322A (en) * | 2017-09-27 | 2017-12-29 | 杭州群核信息技术有限公司 | Rendering intent, device, engine and storage medium |
| CN107527322B (en) * | 2017-09-27 | 2020-08-04 | 杭州群核信息技术有限公司 | Rendering method, device, engine and storage medium combined with convolutional neural network |
| CN108495117A (en) * | 2018-03-29 | 2018-09-04 | 香港光云科技有限公司 | Hologram image various visual angles processing conversion, display methods and equipment |
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