CN102081249A - Image display method of three-dimensional display - Google Patents
Image display method of three-dimensional display Download PDFInfo
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Abstract
The invention discloses an image display method of a three-dimensional display. The image display method comprises the following steps of: providing the three-dimensional display capable of providing N watching angels for an audience, wherein the three-dimensional display comprises a periodic structure and a pixel plane; dividing a space into N visual areas according to the value of N; forming projection areas corresponding to the visual areas on the pixel plane by dint of the periodic structure, wherein the pixel plane corresponding to each projection area is provided with at least one sub-pixel unit; obtaining image information of each visual area according to the sub-pixel unit corresponding to each visual area; and synthesizing the image information of all the visual areas to display the three-dimensional image. With the method, the convenience for use and the error tolerance of counterpoint precision between an optical element and the display are increased.
Description
Technical field
The present invention relates to a kind of method for displaying image, relate in particular to a kind of method for displaying image of three-dimensional display.
Background technology
Along with the progress and prosperity of science and technology, people increase and minimizing never to having only for the enjoyment one of material life and spiritual aspect.With spiritual aspect, in the age that this science and technology is maked rapid progress, people wish to realize by three-dimensional display the imagination of powerful and unconstrained style, to reach the effect of being personally on the scene; Therefore, how to make three-dimensional display present three-dimensional image or image, just become the target that the three-dimensional display technology utmost point is now desired to reach.
In present display technique, stereo display technique can roughly be divided into the observer need wear hyperphoria with fixed eyeballs mirror (stereoscopic) that the particular design glasses watch and the direct bore hole bore hole formula (auto-stereoscopic) of watching.Wherein hyperphoria with fixed eyeballs mirror stereo display technique is full-fledged, and extensively uses as on some specific use such as military affairs simulations or large-scale amusement, but hyperphoria with fixed eyeballs mirror stereo display technique is not good because of its convenience and comfortableness, and it is universal to make this type of technology be difficult for.Therefore, bore hole formula stereo display technique develops and becomes new trend gradually.
Bore hole formula stereo display technique has been developed to the stereo display technique of multiple viewing angle (multi-view) at present.The advantage of the stereo display technique of multiple viewing angle is the bigger fancy space of audience can be provided or view and admire degree of freedom.But for traditional autostereoscopic display, the distance of viewing and admiring between audience and the three-dimensional display must be at the very start to fixed, to keep the display quality that the audience is seen.Yet this restriction has but caused very big inconvenience to the audience.In addition, traditional autostereoscopic display requires very strict for the contraposition between its optical element and the display (alignment), for making, a major challenge especially.
Summary of the invention
The invention provides a kind of method for displaying image of three-dimensional display, can freely adjust for the audience and view and admire distance, and keep good display quality, the contraposition of increase optical element and display is the error tolerance accurately.
The invention provides a kind of method for displaying image of three-dimensional display.Described method for displaying image comprises the steps.One three-dimensional display is provided, and it can provide an audience to have N to watch vision area (multi-view).Wherein, three-dimensional display comprises at least one periodic structure and at least one pixel planes.According to the N value, in the space, mark off N vision area (view zone).By periodic structure, go up the pairing view field of each vision area of formation at pixel planes (pixel plane).Wherein, at least one sub-pixel unit on each view field respective pixel plane.According to the pairing sub-pixel unit of each vision area, obtain the image information of each vision area.The image information of synthetic each vision area is to show a stereo-picture picture.
In one embodiment of this invention, each above-mentioned vision area is the plane of the line segment or the two-dimensional space of the one-dimensional space.
In one embodiment of this invention, the periodicity of above-mentioned periodic structure is T.Form in the step of each view field on pixel planes, each vision area forms T view field on pixel planes.
In one embodiment of this invention, above-mentioned method for displaying image also comprises the steps.Relatively whether each sub-pixel unit corresponds to plural vision area.
In one embodiment of this invention, if each sub-pixel unit does not correspond to plural vision area, in the step of the image information that obtains each vision area, the image information of each sub-pixel unit is considered as the image information of corresponding vision area.
In one embodiment of this invention, if each sub-pixel unit corresponds to plural vision area, in the step of the image information that obtains each vision area, the image information stacked system of each sub-pixel unit is the function of the projection amount of each pairing view field of vision area, to obtain the image information of each vision area.
In one embodiment of this invention, above-mentioned method for displaying image also comprises the steps.The a plurality of reference point of definition on periodic structure.According to each vision area and its corresponding reference point, obtain the positional information of the pairing view field of each vision area on pixel planes.According to the positional information of each view field, determine the pairing sub-pixel unit of each vision area.
In one embodiment of this invention, above-mentioned reference point is arranged along a first direction and a second direction in an array mode.The step of definition reference point comprises the steps.According to the distance of audience and three-dimensional display, adjust the spacing of reference point on first direction.According to the distance of audience and three-dimensional display, adjust the angle of second direction and first direction.
In one embodiment of this invention, above-mentioned periodic structure comprises lens pillar (lenticularlens), liquid crystal lens (liquid crystal lens), slit grating (barrier) or prism (prism).
In one embodiment of this invention, above-mentioned sub-pixel unit comprises red sub-pixel unit, green sub-pixels unit and blue subpixels unit.
Based on above-mentioned, in exemplary embodiment of the present invention, the method for displaying image of three-dimensional display can be viewed and admired the allotment that distance is made displaying contents at different, to increase the convenience that uses and the contraposition between optical element and display error tolerance accurately.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended accompanying drawing to be described in detail below.
Description of drawings
Fig. 1 is the synoptic diagram of the three-dimensional display of one embodiment of the invention.
Fig. 2 is the structural representation of the three-dimensional display of Fig. 1.
Fig. 3 is the schematic top plan view of the three-dimensional display of Fig. 2.
Fig. 4 illustrates among Fig. 1 a wherein vision area pairing positional information on pixel planes.
Before Fig. 5 A and Fig. 5 B illustrate the synthetic stereo image picture, each sub-pixel unit shared weight in the picture of different angles.
Fig. 6 is the flow chart of steps of the method for displaying image of one embodiment of the invention.
Fig. 7 is the rough schematic view of the three-dimensional display of Fig. 1.
Fig. 8 A and Fig. 8 B illustrate the difference of one embodiment of the invention and view and admire the synoptic diagram of distance.
Wherein, description of reference numerals is as follows:
100: three-dimensional display
110: panel of LCD
111: chromatic filter layer
112: the substrate panel
113: polarizing layer
114a: lower-glass layer
114b: upper glass layer
116: organic material layer
118: the clearance
120: optical element
130, VZ1, VZ2: vision area
D, D1, D2: view and admire distance
O, V1～V8: the end points of vision area
W: the width of vision area
Wp: the width of sub-pixel unit
P: the spacing of lens pillar
P: the spacing of reference point on the x direction
PJ1, PJ2, PJ3: view field
K: the angle of lens pillar and y direction
K: the angle of second direction and y direction
Pr, Pr1, Pr2: reference point
Px1: end points is with respect to the coordinate points of reference point on pixel planes
I1, I2: picture
S600, S602, S604, S606, S608: the step of method for displaying image
Embodiment
In exemplary embodiment of the present invention, the method for displaying image of three-dimensional display can be at the different allotments that distance is made displaying contents of viewing and admiring, its allotment comprises horizontal direction and vertical direction, no longer be limited in a specific range so that view and admire distance, and then increase the convenience that three-dimensional display uses.In addition, owing to displaying contents can be adjusted, so the tolerable error of contraposition precision between optical element and the display is bigger, can reduce the degree of difficulty and the cost thereof of making.
Fig. 1 is the synoptic diagram of the three-dimensional display of one embodiment of the invention.Please refer to Fig. 1, in the present embodiment, three-dimensional display 100 comprises a panel of LCD 110 and an optical element 120, and wherein panel of LCD 110 comprises a pixel planes, and optical element 120 for example is an one-period property structure.
In the present embodiment, three-dimensional display 100 for example is the three-dimensional display of a multiple viewing angle (multi-view), and it can provide an audience that N viewing angle arranged.For the three-dimensional display 100 of multiple viewing angle, the numerical value of N representative has the source of the image information of N pictures as the stereo-picture image content.
Be with, the method for displaying image of present embodiment according to this N value, the vision area 130 (view zone) that to mark off N width in the space be W.At this, the N value for example is 8 being example, as shown in Figure 1.But the vision area number of present embodiment also can be and differs from 8 numerical value, and the representative of 8 vision areas has 8 to get the picture of 8 different angles from same object, with the stereo-picture picture of synthetic this object.
In the present embodiment, described vision area is positioned on the plane parallel with three-dimensional display 100, but the invention is not restricted to this.The form of described vision area, such as width, position, arrangement mode and with the distance of three-dimensional display only in order to illustrate, its arrangement mode is not as long as continuously, be restricted to a straight line or circular arc.Each vision area is the plane of the line segment or the two-dimensional space of the one-dimensional space, is example at this line segment with the one-dimensional space.What should be specified is that the distance D of described vision area and three-dimensional display can be represented the distance of viewing and admiring of an audience and three-dimensional display 100.
Fig. 2 is the structural representation of the three-dimensional display of Fig. 1.Please refer to Fig. 1 and Fig. 2, in the present embodiment, optical element 120 can directly be fitted or the mode of machinery assembling is disposed on the panel of LCD 110, and optical element 120 has periodic structure at least in one direction.At this, optical element 120 for example is lens pillar (lenticular lens), but the invention is not restricted to this.In other embodiments, optical element 120 can be liquid crystal lens (liquid crystal lens), slit grating (barrier) or prism (prism).
In the present embodiment, panel of LCD 110 comprises a substrate panel 112, lower-glass layer 114a, upper glass layer 114b and an organic material layer 116.Wherein, substrate panel 112 comprises a polarizing layer 113 and a chromatic filter layer 111, and has a clearance 118 between lower-glass layer 114a and the upper glass layer 114b.
In the present embodiment, the material of organic material layer 116 for example be polyethylene terephthalate (polyethylene terephthalate, PET).Chromatic filter layer 111 comprises the sub-pixel unit of redness (R), green (G) and blue colors such as (B), with as a pixel planes, provides the image information of synthetic stereo image picture.At this, the width of each sub-pixel unit is Wp.
(public information display PID) is example, and the width of its sub-pixel unit is 0.248 millimeter (mm), highly is 0.744mm that resolution is 1920 * 1080 with the public information display of 65 inches (65 ").Therefore, in the present embodiment, if viewing and admiring distance, the central authorities of design three-dimensional display 100 are 3 meters, and are preset as 8 vision areas that then the radius-of-curvature of each lens pillar (curvatureradius) for example is 7mm.
In the present embodiment, each layer thickness of panel of LCD 110 and refractive index are as illustrated in the following table ():
Table (one)
Thickness (mm) refractive index
Lower-glass layer 114a 6 1.5
What should be specified is, the width of each vision area of present embodiment must calculate according to the structure of the display of correspondence, no matter the structure of display is why, vision area width W, the width W p that views and admires distance D and sub-pixel unit meet beneath relational expression (1):
W/D=Wp/Dop relational expression (1)
Optical path length (optical path length) when wherein, on behalf of light beam, light path (optical distance) Dop transmit in panel of LCD 110.By above-mentioned relation formula (1) as can be known, after three-dimensional display completed, the width W p of sub-pixel unit and light path Dop promptly accused definite, therefore in the method for displaying image of present embodiment, when audience and three-dimensional display 100 view and admire distance D when changing, the vision area width W also can change thereupon.In other words, the method for displaying image of present embodiment can be at the different allotments that distance is made displaying contents of viewing and admiring, to increase the convenience that uses.
Specifically, with the structure of the three-dimensional display of present embodiment (65 " PID) is example; please refer to Fig. 1 and Fig. 2; that supposes audience and three-dimensional display 100 views and admires distance D=2.5 meter (meters); and mark off the words of 8 vision areas in the space; and consider the influence of panel of LCD 110 each layer structure to light path Dop, according to table (one) illustrated parameters, its result of calculation is:
Dop＝0188×1.5+4×1.5+4.6×1+6×1.5+0.2×1.33+0.7×1.5
＝12.01mm
Be with, with parameter D=2.5m, Dop=12.01mm, Wp=0.248mm substitution relational expression (1), can get W=51.58mm.That is to say that in the present embodiment, when viewing and admiring the distance D change, the vision area width W also can change thereupon.
Fig. 3 is the schematic top plan view of the three-dimensional display of Fig. 2.Please refer to Fig. 2 and Fig. 3, in the present embodiment, optical element 120 is for example arranged and periodicity is that the lens pillar (being that number is T) of T is formed along the x direction for a plurality of, and the spacing after it is made is p, and is attached at behind the panel of LCD 110 and the angle of y direction is k.
In the method for displaying image of present embodiment,, a plurality of reference point Pr on lens pillar (periodic structure), have been defined in order in the follow-up usefulness that performs calculations in order to keep good display quality.In the present embodiment, reference point Pr arranges along a first direction and a second direction in an array mode, and wherein first direction for example is the x direction, and second direction for example is and the y direction between have an angle K who tilts.In addition, the spacing of each reference point Pr on the x direction of present embodiment is P.
Generally speaking, if it is flawless that lens pillar is made, and with the attaching angle of panel of LCD also precisely as design general, and the viewing and admiring when the same of audience, then P=p and K=k apart from the numerical value of also planning with the designing institute of lens pillar with the width of its eyes.Yet because the precision of making at present and contraposition, above-mentioned perfect condition will be difficult to reach.In addition, the position at audience's place also may not be the distance of presetting of viewing and admiring, so corresponding displaying contents also needs to adjust.
Therefore, in the method for displaying image of present embodiment, spacing P is an adjustable parameter, and in order to the displaying contents of adjustment x direction, and angle of inclination K also is an adjustable parameter, in order to adjust the displaying contents of y direction.What should be specified is, adjusts angle of inclination K, promptly adjusts the angle of this second direction and this first direction.
After the audience stands firm the position (promptly viewing and admiring distance D fixes), its available telepilot or other any input modes are adjusted parameter P, K, till the stereo-picture picture of being seen is satisfied.In other words, displaying contents can be adjusted parameter P, K according to the distance of audience and three-dimensional display, so the audience adjusts, and afterwards resulting parameter P, K can be considered a result after the correction.When stereo-picture broadcast afterwards, three-dimensional display 100 promptly carries out Flame Image Process according to the picture that parameter P, K play institute's desire.
Be with because displaying contents can adjust, so the tolerable error of contraposition precision between optical element and the display is bigger, can reduce the degree of difficulty and the cost thereof of making.
Fig. 4 illustrates among Fig. 1 a wherein vision area pairing positional information on pixel planes.Please refer to Fig. 1 and Fig. 4, in the present embodiment, two-end-point V1, V2 and reference point Pr1, Pr2 with vision area VZ1 are example, it is ear law (Snell ' s law) that the light beam that is passed to end points V1 through reference point Pr1 can utilize light beam to look for mark principle (ray tracing) and department, and tracking out this light beam is corresponding to which coordinate points on the pixel planes.In Fig. 4, t is the tangent line of lens pillar at reference point Pr1, and n is the normal of lens pillar at reference point Pr1.
Particularly, utilize light beam look for mark principle and department be the ear law for example can calculate end points V1 with respect to the coordinate points of reference point Pr1 on pixel planes for (Px1, Py1).Similarly, utilize aforesaid way, can calculate end points V1 and be (Px2 with respect to the coordinate points of reference point Pr2 on pixel planes, Py2), and end points V2 respectively with respect to reference point Pr1, the Pr2 coordinate points on pixel planes be (Px3, Py3), (Px4, Py4).
In other words, in the method for displaying image of present embodiment,, can obtain the positional information of the pairing view field of each vision area on pixel planes according to each vision area and its corresponding reference point.And then, according to the positional information of each view field, determine the pairing sub-pixel unit of each vision area.In the present embodiment, each vision area pairing view field on pixel planes may comprise more than one sub-pixel unit.
From another viewpoint, specific sub-pixel unit may only correspond to a vision area, and define this sub-pixel unit this moment is 1 for the weight (weighting factor) of the specific image picture of this vision area.Therefore, in the present embodiment, method for displaying image comprises also whether each sub-pixel unit of comparison corresponds to plural vision area, and then calculates the weight of particular sub-pixel unit for the specific image picture of specific vision area.In the present embodiment, be divided into 8 vision areas in the space, representative has 8 to get the picture of 8 different angles from same object, with the stereo-picture picture of synthetic this object.
Before Fig. 5 A and Fig. 5 B illustrate the synthetic stereo image picture, each sub-pixel unit shared weight in the picture of different angles.Please refer to Fig. 5 A and Fig. 5 B, in Fig. 5 A and Fig. 5 B, picture I1, I2 are divided into a plurality of blocks respectively, and each block is corresponding to a plurality of sub-pixel unit on the pixel planes.If each sub-pixel unit does not correspond to plural vision area in the block, then the image information of each sub-pixel unit will be regarded as the image information of corresponding vision area.For example, in Fig. 5 A and Fig. 5 B, be denoted as 1 block, promptly represent the sub-pixel unit of this block only to correspond to a specific vision area.
If each sub-pixel unit corresponds to plural vision area, according to the projection amount of each pairing view field of vision area, the image information of each sub-pixel unit will be applied, to obtain the image information of each vision area.For example, in Fig. 5 A and Fig. 5 B, be denoted as 0.1,0.2,0.8 and 0.9 block, promptly represent the sub-pixel unit of this block to correspond to plural vision area, wherein the expression value in the block is promptly represented the weight of this block correspondence.What should be specified is, in the present embodiment, the corresponding different shared weight of image frame of each sub-pixel unit for example is relevant with projection amount (for example projected area) ratio of each pairing view field of vision area, that is its weight is the function of view field's projection amount.In other words, the image information stacked system of each sub-pixel unit is the function of the projection amount of each pairing view field of vision area, to obtain the image information of each vision area.
It should be noted that Fig. 5 A and Fig. 5 B only illustrate the weight distribution of the sub-pixel unit of each block among wherein two pictures I1, the I2 of synthetic stereo image picture, in the present embodiment, a synthetic stereo-picture picture needs the image information of 8 pictures.
Therefore, in the method for displaying image of present embodiment, can reach the weight of each sub-pixel unit of adjustment by adjusting parameter P, K for every pictures, and then change the image information that inputs to each sub-pixel unit, to reach the purpose of adjusting picture material according to the distance of audience and three-dimensional display.
Fig. 6 is the flow chart of steps of the method for displaying image of one embodiment of the invention.Fig. 7 is the rough schematic view of the three-dimensional display of Fig. 1.Please be simultaneously with reference to Fig. 6 and Fig. 7, in the present embodiment, the periodicity of lens pillar 120 is T, and is divided into 8 vision areas 130 in the space, and the lens pillar and the vision area of part only are shown among Fig. 7, to simplify accompanying drawing.The method for displaying image of present embodiment comprises the steps.
At first, in step S600, provide a three-dimensional display 100.
Then, in step S602, according to needed N value, mark off N vision area in the space, wherein each vision area has the image information of its corresponding picture.Because the periodicity of lens pillar is T, thus each vision area all on pixel planes 111, form T the PJ1 of view field, PJ2, PJ3 ..., the PJT (not shown).
Also promptly, in step S604,, on pixel planes 111, form the pairing view field of each vision area by lens pillar 120.By the projection amount (for example area that view field covered) of each vision area on pixel planes 111 as can be known, the quantity of the pairing sub-pixel unit of each vision area.And then, according to the quantity of the pairing sub-pixel unit of each vision area (one or several), can learn the image information of the image information of each sub-pixel unit for its corresponding vision area.
Therefore, in step S606,, obtain the image information of each vision area according to the pairing sub-pixel unit of each vision area.If corresponding sub-pixel unit then superposes two vision area corresponding image information corresponding to plural vision area.For example, if specific sub-pixel unit is corresponding to vision area VZ1, VZ2, and vision area VZ1, VZ2 are respectively Pj 1, Pj2 in the projection amount of this sub-pixel unit, the image information of corresponding picture is respectively i1, i2, then the picture signal of this sub-pixel unit is f * i1+g * i2, and wherein f, g are the function of projection amount Pj 1, Pj2.
At last, in step S608, the image information of synthetic each vision area is to show a stereo-picture picture.
In addition, the method for displaying image of embodiments of the invention can be obtained enough teachings, suggestion and implementation in the narration by Fig. 1～Fig. 5 embodiment, therefore repeats no more.
From another viewpoint, Fig. 8 A and Fig. 8 B illustrate the difference of one embodiment of the invention and view and admire the synoptic diagram of distance.Please refer to Fig. 8, in the present embodiment, look for the mark principle and department is the sub-pixel unit that the ear law calculates its each vision area correspondence, and then determine each sub-pixel unit to give the corresponding required image information of vision area with light beam.
The audience is (for example Fig. 8 A or Fig. 8 B) when diverse location, and its available telepilot or other any input modes are adjusted parameter P, K, till the stereo-picture picture of being seen is satisfied.As for the foundation of adjusting parameter P, K, for example be that the audience utilizes its left eye and to confirm that pattern (check pattern) carries out the image adjustment.Afterwards, the audience utilizes its right eye and another different affirmation pattern to carry out the image adjustment again, till the stereo-picture picture of being seen is satisfied.
In sum, in exemplary embodiment of the present invention, the method for displaying image of three-dimensional display can be viewed and admired the allotment that distance is made displaying contents at different, to increase the convenience that uses and the contraposition between optical element and display error tolerance accurately.。
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any those of ordinary skills; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the scope that claim defined.
Claims (10)
1. the method for displaying image of a three-dimensional display, this method for displaying image comprises:
One three-dimensional display is provided, and wherein this three-dimensional display comprises an one-period property structure and a pixel planes;
In the space, mark off N vision area;
By this periodic structure, on this pixel planes, form the respectively pairing view field of this vision area, wherein respectively this view field at least one sub-pixel unit on should pixel planes;
Foundation is pairing this sub-pixel unit of this vision area respectively, obtains the respectively image information of this vision area; And
The synthetic respectively image information of this vision area is to show a stereo-picture picture.
2. method for displaying image as claimed in claim 1, wherein respectively this vision area is the plane of the line segment or the two-dimensional space of the one-dimensional space.
3. method for displaying image as claimed in claim 1, wherein the periodicity of this periodic structure is T, forms on this pixel planes in this step of this view field respectively, respectively this vision area forms T view field on this pixel planes.
4. method for displaying image as claimed in claim 1 also comprises:
More whether this sub-pixel unit corresponds to plural described vision area.
5. method for displaying image as claimed in claim 4, wherein if respectively this sub-pixel unit does not correspond to plural described vision area, in obtaining this step of the image information of this vision area respectively, the image information of this sub-pixel unit respectively is considered as the image information of this corresponding vision area.
6. method for displaying image as claimed in claim 4, wherein if respectively this sub-pixel unit corresponds to plural described vision area, in obtaining this step of the image information of this vision area respectively, foundation is the projection amount of this pairing view field of vision area respectively, with the respectively image information stack of this sub-pixel unit, obtain the respectively image information of this vision area.
7. method for displaying image as claimed in claim 1 also comprises:
The a plurality of reference point of definition on this periodic structure;
Foundation is this vision area described a plurality of reference point corresponding with it respectively, obtain the respectively positional information of the pairing view field of this vision area on this pixel planes; And
Foundation is the positional information of this view field respectively, and decision is pairing this sub-pixel unit of this vision area respectively.
8. method for displaying image as claimed in claim 7, wherein said a plurality of reference point are arranged along a first direction and a second direction in an array mode, and this step that defines described a plurality of reference point comprises:
According to the distance of this audience and this three-dimensional display, adjust the spacing of described a plurality of reference point on this first direction; And
According to the distance of this audience and this three-dimensional display, adjust the angle of this second direction and this first direction.
9. method for displaying image as claimed in claim 1, wherein this periodic structure comprises lens pillar, liquid crystal lens, slit grating or prism.
10. method for displaying image as claimed in claim 1, wherein said sub-pixel unit comprise red sub-pixel unit, green sub-pixels unit and blue subpixels unit.
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