CN102497563B

CN102497563B - Tracking-type autostereoscopic display control method, display control apparatus and display system

Info

Publication number: CN102497563B
Application number: CN201110396345.XA
Authority: CN
Inventors: 宋磊; 刘宁; 戈张
Original assignee: Shenzhen Super Perfect Optics Ltd
Current assignee: Shenzhen Super Technology Co Ltd
Priority date: 2011-12-02
Filing date: 2011-12-02
Publication date: 2014-08-13
Anticipated expiration: 2031-12-02
Also published as: CN102497563A

Abstract

A tracking-type autostereoscopic display control method, a display control apparatus and a display system are disclosed. An adjusting process of a set display parameter by using the display control method comprises the following steps: assessing a value to be assessed of the display parameter according to position information of at least two viewers and determining a target value of display parameter adjustment according to an assessment result; adjusting the display parameter according to the target value. The display control apparatus comprises: a dereferencing sub-apparatus and an assessment sub-apparatus, wherein the dereferencing sub-apparatus is used to take out the value to be assessed of the set display parameter; the assessment sub-apparatus is used to assess the value to be assessed of the display parameter according to the position information of at least two viewers and determine the target value of the display parameter adjustment according to the assessment result. In the invention, according to a plurality of viewer positions obtained through tracking, the target value of the display parameter adjustment is determined so that viewers who watch a same display screen can watch a normal stereo effect as many as possible. Therefore, a viewing section of the autostereoscopic display apparatus can be enlarged.

Description

Tracking mode bore hole stereo display control method, display control unit and display system

Technical field

The present invention relates to bore hole stereo display technique, relate in particular to a kind of tracking mode bore hole stereo display control method, display control unit and corresponding display device, display system.

Background technology

Current stereopsis display mode is broadly divided into 3 classes, i.e. spectacle, head-mounted display (Head Mount Display) formula and herein by the bore hole formula of introducing.Bore hole formula comprises numerous species, conventionally adopts the realizations such as lens arra formula technology, parallax obstacle type technology.Naked-eye stereoscopic display device mainly coordinates light-splitting device to assemble as grating by two dimension (Two-Dimensional, 2D) flat-panel screens (comprising liquid crystal display, plasma display, Field Emission Display and display of organic electroluminescence etc.).The grating using can be divided into slit grating and cylindrical grating, and accordingly, raster pattern 3D three-dimensional display also has two kinds of implementations: slit grating formula 3 d display device and microlens array 3 d display device.Yet slit grating inevitably blocks part light, cause the reduction of light utilization efficiency.And cylindrical grating is due to the cause of self material, the parameters such as focal length, pitch (PITCH) are all fixing and nonadjustable.For above-mentioned defect, industry has proposed again the controlled light-splitting devices such as the adjustable liquid crystal lens (LC-Lens) of parameter, liquid crystal grid (LC-Barrier).For example, liquid crystal lens, owing to being to add electric drive by strip electrode and electrode layer to form, distributes by changing voltage, can make lens unit be moved, and can also change pitch and the focal length of lens unit.

In diversified bore hole formula stereo display technique, what start at first exploitation is eyes (or claiming 2 viewpoints) modes.After eyes mode, many more super many viewpoints modes of (or claiming many viewpoints) mode, panorama (ray space reproduction) mode and viewpoint number are developed in succession.

A very large defect of bore hole formula stereo display is the restriction that is subject to watching scope.Take and support that the naked-eye stereoscopic display device with grid of 4 viewpoints is example, shown in Fig. 1, be from obtaining perpendicular to display floater and the direction intercepting that is parallel to display floater width, having drawn a part of (imaging plane) 10 of the display floater in three-dimensional display and light-splitting device 20.The origin of coordinates of the reference axis shown in Fig. 1 is defined in display screen center.The X-direction of this reference axis is also referred to as laterally, and Y direction is also referred to as short transverse, and Z axis is also referred to as fore-and-aft direction, and Z coordinate figure is also referred to as viewing distance.

As shown in the figure, display floater is as being arranged with the display unit 101 of 4 visual point images on liquid crystal panel, by 1,2, and 3,4,1,2,3,4, ... mode circulate and be staggered, be denoted as the image that 1,2,3,4 display unit is respectively used to show the 1st viewpoint, the 2nd viewpoint, the 3rd viewpoint and the 4th viewpoint.In two adjacent display units, one for showing the image that offers beholder's left eye, and another is for showing the image that offers beholder's right eye.In literary composition by the width W of 4 continuous display units _dbe called a display unit and arrange cycle W _td(under N viewpoint, be W _td=N*W _d).Display unit in literary composition is a logical concept, can be time pixel or pixel, but be not limited to this, and as can be also that two pixels are a display unit, or thinner inferior pixel segmentation again, be called time time pixel etc.

Minute light action by the spectrophotometric unit 201 on light-splitting device 20 (spectrophotometric unit of Fig. 1 is a grill unit on three-dimensional filter, can be also a lens unit in lens arra etc.) can spatially form the subarea of watching of staggered each visual point image of circulation.In figure, be labeled as 1,2,3,4 the subarea 30 of watching and show respectively the 1st, 2,3,4 visual point images watch the position of subarea in viewing ratio (or being called the suitable distance of seeing).Fig. 2 a shows that in Fig. 1, lateral attitude is corresponding to continuous 4 exemplary shapes of watching subarea at display screen center, and inside is labeled with 1,2,3,4 quadrangle represents respectively the 1st, 2,3,4 visual point images watch subarea, be quadrangle, can see respectively the 1st, 2, the image that the display unit of 3,4 visual point images presents, line segment BD represents the position of viewing ratio.The subarea of watching of other positions is also quadrangle, slightly variant.Continuous the 1st, watch subarea to be called one for 4 of 2,3,4 visual point images and watch subarea group, watch the width W of subarea group in viewing ratio for one _twequal 4 and watch the width 4*W of subarea in viewing ratio _w(W under N viewpoint _tw=N*W _w), W _wfor interocular distance.It should be noted in the discussion above that if adopt the grating that tilts, in the XZ plane of the differing heights of display floater, there is lateral shift in the display unit of each visual point image.

Images of left and right eyes respectively in the 1st, 2 viewpoints or the 2nd, 3 viewpoints or the 3rd, 4 visual point images watch in subarea time, left eye is seen left-eye image, right eye is seen eye image, and generation is faced, and can watch stereo display effect.And if images of left and right eyes respectively in the 4th, 1 visual point image watch in subarea time, look generation is contrary.If when images of left and right eyes is just positioned at two borders of watching subarea, can produces and crosstalk.According to the subarea of watching of each visual point image, can determine the positive vision area of adjacent viewpoint image and contrary vision area, crosstalk zone, Fig. 2 b shows positive vision area and the contrary vision area of watching adjacent viewpoint image in the group of subarea shown in Fig. 2 a, inside is labeled with 1, when 2 quadrangle represents that place between the eyebrows is positioned at wherein, left eye is watched the 1st visual point image and right eye is watched the positive vision area of the 2nd visual point image, be labeled with 2,3 and 3,4 quadrangle similarly.And inside is labeled with 4,1 quadrangle while representing that place between the eyebrows is positioned at wherein, left eye watches the 4th visual point image and right eye is watched the contrary vision area of the 1st visual point image.In viewing ratio, the width of above-mentioned positive vision area and contrary vision area is W _w.

More than to take 4 viewpoints as example, when viewpoint number is N, N >=2, the number of the display unit comprising in the display unit arrangement cycle, one watch the number of watching subarea that subarea group comprises to be N, positive vision area and 1 contrary vision area that can form N-1 adjacent viewpoint image, shape is also quadrangle.

Utilize head tracking technology (also referred to as face tracking technology) can effectively alleviate limited this defect of bore hole formula stereo display viewing areas, viewing areas is increased a lot.The maximum feature of head tracking technology is can detect in real time beholder's position (refer to that the position of beholder's eyes or place between the eyebrows is as three-dimensional coordinate, or be the relevant position that can infer beholder's eyes or place between the eyebrows position) and offer display control unit; Display control unit can change the display parameters of display according to beholder's position, make beholder enjoy stereo display effect.

Industry has been developed the head tracing system of cutting apart conversion grid (Shift Barrier) mode by name for a long time.This system is periodically development, by 1997, developed again can be when beholder moves the technology of switching right and left (LR) image.Before liquid crystal panel, be placed with parallax barrier, can by the image for left eye in three-dimensional view (also referred to as left image) and for right eye image (also referred to as right image) separate, make left image enter beholder's left eye, right image enters into beholder's right eye.As shown in Figure 3, when beholder has been moved to the left while being equivalent to its interocular distance as 65mm, the left and right image that now beholder sees at first can exchange, left image enters beholder's right eye and right image enters into beholder's left eye, this state is called " contrary looking ", beholder can not produce correct stereoscopic vision, can not enjoy stereo display effect.Now can the upper left image of switchable liquid crystal panel and the demonstration of right image (to double vision dot system, be equivalent to display unit and be offset the distance that half display unit is arranged the cycle), just can guarantee that beholder continues generation stereoscopic vision.Within 1999, developed again can transverse shifting grid position conversion grid technology.As shown in Figure 4, when lateral shift occurs for beholder's position, if only moved half of interocular distance, for example during 32.5mm, the images of left and right eyes that beholder can occur is seen right image and left image simultaneously, occurs crosstalk phenomenon.In this case, only need movable grid slightly, just can eliminate and crosstalk.

Being illustrated as shown in Fig. 5 of this process, in Fig. 5, the picture left above shows beholder and moves front position, and now beholder's place between the eyebrows is arranged in positive vision area, can produce correct stereoscopic vision.In Fig. 6, the right side illustrates beholder and moves right to behind crosstalk zone, by movable grid, positive vision area is moved thereupon, can guarantee that beholder produces correct stereoscopic vision.Beholder, continue to move right, while entering contrary vision area, can switch left and right image.So, beholder all can produce correct stereoscopic vision on almost any position of transverse shifting, and this effect is as shown in lower-left figure in Fig. 6.By these behaves, successfully increased in the horizontal the scope of watching.

By the adjustment to display unit or light-splitting device, except realizing, watch the movement in the horizontal of subarea, also can realize the variation of viewing ratio, as adjusted display unit, arrange on cycle, light-splitting device spectrophotometric unit width (as the pitch of lens unit) etc.

But the tracking technique of at present stereo display is mainly for view single (site) person, and during application tracking technology, just must consider the demand that many people watch on large scale stereoscopic display device.And under the scene of the bore hole stereo display that many people are followed the tracks of, just can not as above-mentioned single tracking, only consider a beholder's needs, and need to consider a plurality of beholders' the needs of watching, make beholder as much as possible enjoy stereo display effect.But, also there is no at present corresponding solution.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of tracking mode bore hole stereo display control method, display control unit, display device and display system that can make beholder as much as possible enjoy stereo display effect.

In order to address the above problem, the invention provides a kind of tracking mode bore hole stereo display control method, wherein, the adjustment process of the display parameters of setting is comprised:

According at least two beholders' positional information, the valuation to be evaluated of described display parameters is assessed, according to assessment result, determine the desired value that described display parameters are adjusted;

According to described desired value, described display parameters are adjusted.

Preferably,

At least two beholders' of described basis positional information, assesses the valuation to be evaluated of described display parameters, according to assessment result, determines the desired value that described display parameters are adjusted, and comprising:

According to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.

Preferably,

According to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least with described beholder's position and the weighted average of the geometric distance sum between immediate projection centre or described geometric distance is minimum separately, and all beholders are not alternative condition in contrary vision area, select the desired value that described display parameters are adjusted from described valuation to be evaluated; Or

According to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least with described beholder's position and the weighted average of the geometric distance sum between immediate projection centre or described geometric distance is minimum separately, and the beholder in contrary vision area is minimum is alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.

Preferably,

According to the position of described beholder's position and target viewing area corresponding to described valuation to be evaluated, at least take and have maximum beholders to be positioned at target viewing area as alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.

Preferably, described target viewing area is a kind of in following several region:

Watch all regions of watching the outline delimitation in subarea in the group of subarea for one;

Watch in the region that in the group of subarea, all outlines of watching subarea delimited for one, by the region that half interocular distance of translation to the inside limits in vertical direction separately, each limit in the region of this delimitation;

A region of watching the outline delimitation of the positive vision area of all adjacent viewpoint images in the group of subarea;

A positive vision area of watching all adjacent viewpoint images in the group of subarea.

Preferably,

The deterministic process that also comprises the adjustment process that whether starts described display parameters:

According to the position of the lasting viewing area corresponding with current display parameters, described beholder's position, judge whether described beholder is all positioned at described lasting viewing area, as inequality be positioned at this lasting viewing area and as described in beholder while having two at least, start the adjustment process of described display parameters.。

Preferably,

Described lasting viewing area is a kind of in following several region:

A positive vision area of watching all adjacent viewpoint images in the group of subarea;

And described lasting viewing area is more than or equal to described target viewing area.

Preferably,

Described beholder's position and the separately geometric distance between immediate projection centre, refer to:

Described beholder's position and the separately lateral separation between immediate projection centre; Or

Described beholder's position and the separately fore-and-aft distance between immediate projection centre; Or

Described beholder's position and separately the point-to-point distance between immediate projection centre.

Preferably,

Take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted, comprising:

Take described beholder's position and separately the fore-and-aft distance minimum between immediate projection centre be alternative condition, select the value of the first display parameters; Or

Take described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters; Or

Take described beholder's position and separately the point-to-point between immediate projection centre apart from minimum, be alternative condition, select the value of the first display parameters and the value of the second display parameters simultaneously; Or

Take described beholder's position and separately the fore-and-aft distance minimum between immediate projection centre be alternative condition, select the value of the first display parameters, take again described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters; Or

Take described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters, take again described beholder's position and separately the fore-and-aft distance minimum between immediate projection centre be alternative condition, select the value of the first display parameters;

Wherein, described the first display parameters are that display unit is arranged cycle and/or spectrophotometric unit width, and described the second display parameters are display unit deviant and/or spectrophotometric unit deviant.

Preferably,

Described display parameters comprise the first display parameters, and the valuation to be evaluated of described the first display parameters is taken out in the following manner:

According to described beholder's position calculation, go out the viewing distance scope that maximum viewing distance and minimum viewing distance by beholder limit;

Calculate the span of the first display parameters corresponding to described viewing distance scope;

In the span of described the first display parameters, take out the valuation to be evaluated of the first display parameters;

Wherein, described the first display parameters are that display unit is arranged cycle and/or spectrophotometric unit width.

Preferably,

Described display parameters comprise the second display parameters, and the valuation to be evaluated of described the second display parameters is taken out in the following manner:

Each valuation to be evaluated to the first definite or current display parameters, determine the span of the second corresponding display parameters, from this span, taking-up is corresponding to the valuation one or more to be evaluated of the second display parameters of this valuation to be evaluated of the first display parameters;

Wherein, described the second display parameters comprise display unit deviant and/or spectrophotometric unit deviant, described the first display parameters are that display unit is arranged cycle and/or spectrophotometric unit width, the size of the span of described display unit deviant is that a display unit is arranged the cycle, and the size of the span of described spectrophotometric unit deviant is a spectrophotometric unit width.

Preferably,

The position of the target viewing area that at least two beholders' of described basis position and described valuation to be evaluated are corresponding, take and have maximum beholders to be positioned at target viewing area as alternative condition, selects the desired value that described display parameters are adjusted from described valuation to be evaluated, comprising:

Valuation to be evaluated to described display parameters is assessed one by one, to described display parameters certain or certain while organizing valuation to be evaluated assessment, according to described beholder's position and this, maybe this organizes the position of target viewing area corresponding to valuation to be evaluated, judge whether that all beholders are all positioned at the target viewing area of described correspondence, in this way, using this, maybe this organizes the desired value that valuation to be evaluated is adjusted as described display parameters.

Correspondingly, the present invention also provides a kind of tracking mode bore hole display control unit, it is characterized in that, comprising:

The sub-device of value, for taking out the valuation to be evaluated of the display parameters of setting;

Assess sub-device, for according at least two beholders' positional information, the valuation to be evaluated of described display parameters is assessed, according to assessment result, determine the desired value that described display parameters are adjusted.

Preferably,

The sub-device of described assessment, according at least two beholders' positional information, is assessed the valuation to be evaluated of described display parameters, according to assessment result, determines the desired value that described display parameters are adjusted, and comprising:

According to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted; Or

Preferably,

According to the position of described beholder's position and target viewing area corresponding to described valuation to be evaluated, at least take and have maximum beholders to be positioned at target viewing area as alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted;

Described target viewing area is a kind of in following several region:

Preferably, described display control unit also comprises:

Adjust the sub-device of judgement, be used for according to the position of the lasting viewing area corresponding with current display parameters, described beholder's position, judge whether described beholder is all positioned at described lasting viewing area, as inequality be positioned at this lasting viewing area and as described in beholder while having two at least, start the sub-device of described value and the sub-device of assessment carries out the adjustment of display parameters;

Wherein, described lasting viewing area is a kind of in following several region:

Preferably,

The described beholder's that the sub-device of described assessment calculates position and the separately geometric distance between immediate projection centre, refer to: described beholder's position and the separately lateral separation between immediate projection centre; Or, described beholder's position and the separately fore-and-aft distance between immediate projection centre; Or, described beholder's position and separately the point-to-point distance between immediate projection centre;

The sub-device of described assessment take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted, comprising:

Preferably,

The sub-device of value, the valuation to be evaluated for the display parameters that take out, comprising:

Take out in the following manner the valuation to be evaluated of the first display parameters: according to described beholder's position calculation, go out the viewing distance scope that maximum viewing distance and minimum viewing distance by beholder limit; Calculate the span of the first display parameters corresponding to described viewing distance scope; In the span of described the first display parameters, take out the valuation to be evaluated of the first display parameters; Wherein, described the first display parameters are that display unit is arranged cycle and/or spectrophotometric unit width; And/or

Take out in the following manner the valuation to be evaluated of the second display parameters: each valuation to be evaluated to the first definite or current display parameters, determine the span of the second corresponding display parameters, from this span, taking-up is corresponding to the valuation one or more to be evaluated of the second display parameters of this valuation to be evaluated of the first display parameters; Wherein, described the second display parameters comprise display unit deviant and/or spectrophotometric unit deviant, described the first display parameters are that display unit is arranged cycle and/or spectrophotometric unit width, the size of the span of described display unit deviant is that a display unit is arranged the cycle, and the size of the span of described spectrophotometric unit deviant is a spectrophotometric unit width.

Correspondingly, the present invention also provides a kind of tracking mode bore hole stereoscopic display device, comprises display screen and display control unit, and wherein, described display control unit adopts display control unit as above.

Correspondingly, the present invention also provides a kind of tracking mode naked-eye stereoscopic display system, wherein, comprising:

Tracking means, for obtaining each beholder's positional information;

Display control unit as above;

Vision-control device, for adjusting described display parameters according to the desired value of the definite display parameters adjustment of described display control unit;

Three-dimensional display, for showing stereo-picture;

Described naked-eye stereoscopic display system is the naked-eye stereoscopic display system of double vision point or many viewpoints.

The desired value that a plurality of beholders' that such scheme obtains according to tracking location positioning display parameters are adjusted, making to watch in the beholder of same display screen has beholder as much as possible to see normal stereoeffect, has increased the viewing area of naked-eye stereoscopic display device.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of watching subarea that three-dimensional display forms each visual point image;

Fig. 2 a be in Fig. 1 one watch 4 shape schematic diagrames of watching subarea continuous in the group of subarea;

Fig. 2 b is the schematic diagram of positive vision area of watching forming in the group of subarea in Fig. 2 a, contrary vision area;

Fig. 3 is beholder while moving to contrary vision area, by left and right image switching, makes beholder produce the schematic diagram of stereoscopic vision;

Fig. 4 is beholder while moving to crosstalk zone, by movable grid, makes beholder produce the schematic diagram of stereoscopic vision;

Fig. 5 is the schematic diagram that while making beholder's transverse shifting by movable grid and the left and right image of switching, total energy produces stereoscopic vision;

Fig. 6 a～Fig. 6 d is respectively target viewing area and watch subarea, target viewing area and positive vision area, first and lasting viewing area and positive vision area, and target viewing area and the 3rd target viewing area be related to schematic diagram;

Fig. 7 is the schematic diagram of the distribution of target viewing area on whole display space;

Fig. 8 is the flow chart of first embodiment of the invention bore hole stereo display control method;

Fig. 9 is the detail flowchart of step 120 in Fig. 8;

Figure 10 is the schematic diagram of the geometric distance at He Sheying center, beholder position;

Figure 11 is the block diagram of the embodiment of the present invention one naked-eye stereoscopic display system;

Figure 12 is the block diagram of display control unit in Figure 11;

Figure 13 is the flow chart of second embodiment of the invention bore hole stereo display control method;

Figure 14 is the detail flowchart of step 220 in Figure 13.

Embodiment

For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the embodiment in the application and the feature in embodiment be combination in any mutually.

Under the scene of many viewpoints, under the stereo display of tracking mode bore hole and two viewpoint scenes, there is larger difference, now need to consider a plurality of beholders' position, after can not always guaranteeing to adjust, all beholders can enjoy stereo display effect, also will consider the factors such as complexity of computing simultaneously.Therefore, beholder can be set and be positioned at the wherein region with regard to not needing to adjust, in literary composition, be called lasting viewing area, after can also being set, adjustment wishes that beholder is positioned at region wherein, in literary composition, be called target viewing area, usually, lasting viewing area can be more than or equal to target viewing area.The frequent degree of the setting in these two kinds of regions and viewing effect, adjustment and operand etc. are relevant, according to different condition and requirement, can have Different Strategies.

A quadrangle ABCD is drawn out in the subarea of watching of 4 visual point images of Fig. 6 a based on continuous in Fig. 2 a, wherein, using two of the 1st, 4 visual point images, watches each two outer side edges in subarea as four limits of quadrangle ABCD.Fig. 6 b shows the position relationship of the positive vision area of this quadrangle ABCD and 3 adjacent viewpoint images wherein, Fig. 6 c 3 positive vision areas based in Fig. 6 b draws out another quadrangle abcd, wherein, can see the 1st, 2 visual point images and the 3rd, each two outer side edges of two positive vision areas of 4 visual point images are as four limits of quadrangle abcd and limit quadrangle abcd, and quadrangle abcd is included among quadrangle ABCD.

Easily understand, when beholder's (referring to place between the eyebrows position) is in quadrangle abcd, on a part of position except the positive vision area of adjacent viewpoint image, images of left and right eyes is respectively in 1,3 viewpoints, 1,4 viewpoints or 2,4 visual point images watches subarea, beholder also can produce stereoscopic vision, and the parallax of the stereo-picture of just seeing is larger than what see in positive vision area, also can be referred to as positive vision area.Another part position is crosstalk zone.Certainly, also can get rid of a part of crosstalk zone, form as the hexagon being limited by summit gbefdh in Fig. 6 c, can also be other shapes.This region of delimiting according to an outline of watching all positive vision areas in the group of subarea (referring in quadrangle abcd or quadrangle abcd and the region that comprises all positive vision areas) can be used as target viewing area.Similarly, in many view system, when beholder is arranged in quadrangle ABCD, may enjoy stereo display effect, even if beholder not in positive vision area, is also easier to produce stereoscopic vision by beholder self adjustment slightly.Similar, can in quadrangle ABCD, get rid of a part of crosstalk zone, form as the hexagon being limited by summit GBEFDH in Fig. 6 c, can also be other shapes.Thisly according to one, watch the regions that in the group of subarea, all outlines of watching subarea delimited (refer in quadrangle ABCD or quadrangle ABCD and comprise all regions of watching subarea) to can be used as target viewing area.As shown in Fig. 6 d, by four limits of quadrangle ABCD half interocular distance of translation to the inside in vertical direction separately, also can obtain a quadrangle a ' b ' c ' d ', this quadrangle a ' b ' c ' d ' and quadrangle abcd are more approaching, but also incomplete same, also can be used as target viewing area.According to above description, the setting that those skilled in the art should understand target viewing area is to be not limited to upper type, also has other mapping mode, without enumerating.

Fig. 7 be shown in Fig. 1, under scene, form according to the distribution schematic diagram of watching a plurality of targets viewing area (being the quadrangle ABCD in Fig. 6 a) that in the group of subarea, all outlines of watching subarea delimited, these target viewing areas are continuous in viewing ratio.The geometric center that it should be noted that above-mentioned all types of target viewing area is identical, is and watches two summits of subarea group in viewing ratio as the mid point of the line segment between BD.This mid point can be used as the projection centre of a corresponding N display unit, and in the XZ plane shown in Fig. 1, projection centre has a plurality of.In the XZ plane of the differing heights of display floater, as there is lateral shift in the display unit of each visual point image, a plurality of projection centres that form also can respective offsets, therefore in the XZ plane of each height, there is one group of projection centre, the projection centre forming on differing heights may be different, and its deviant is corresponding with the display unit deviant on differing heights.Projection centre of the present invention also can be defined as other positions, as quadrangle ABCD in Fig. 7, intersection point of angular bisector etc. is approached to the point of this quadrangle geometric center position.

This point also can be called the projection centre of target viewing area.

For a three-dimensional display, each visual point image watch subarea and corresponding positive vision area, contrary vision area and above-mentioned all types of target viewing area relevant with the display parameters of this three-dimensional display.Can be with reference to Fig. 1, the skew of display unit (laterally) can make the subarea of watching of each visual point image that respective offsets occurs, as display unit skew offset _dtime, watch subarea will be offset offset in viewing ratio _w, have offset _d/ W _d=offset _w/ W _w.Display unit is arranged cycle W _dduring variation, viewing ratio D _wcan there is corresponding change.Similar, for controlled light-splitting device, by to spectrophotometric unit as the lens unit forming in liquid crystal lens, liquid crystal grid, the skew of grill unit, also can make the subarea of watching of each visual point image that respective offsets occurs, by changing spectrophotometric unit width as the pitch of lens unit and respective focal, also can be so that viewing ratio changes.

At a time, display parameters are determined, the position of watching subarea and corresponding positive vision area, contrary vision area and above-mentioned all types of target viewing area of each visual point image that three-dimensional display forms also can be determined thereupon, may calculate according to display parameters, or search and obtain from the corresponding relation of the display parameters of preservation and the position of one or more viewing areas.

Embodiment mono-

The present embodiment tracking mode bore hole stereo display control method comprises:

Step 1, the position that obtains described beholder;

Beholder's position is as represented with the three-dimensional coordinate of beholder's place between the eyebrows, but is not limited only to place between the eyebrows position, can be also face or head center position, or can indirect reformer be the position at binocular interval center.If the maximum that the user's that tracking means is caught position allows in three-dimensional display is watched outside scope, can, not using this user as beholder, abandon its position data.Other embodiment herewith.

Step 2, according to the position of described beholder's position and current lasting viewing area, judges whether that all beholders are all positioned at and continues viewing area;

The position of current lasting viewing area can be after last time display parameters being adjusted record in addition, its position is as represented with the three-dimensional coordinate that continues each summit, viewing area.By three-dimensional coordinate, contrast, just can make above-mentioned judgement.

Step 3, while being all positioned at lasting viewing area as all beholders, does not start the adjustment process of display parameters, finishes, otherwise, the adjustment process of startup display parameters.

Wherein, lasting viewing area can be but be not limited to following a kind of in several:

The present embodiment provides after a plurality of beholders position is obtained in many people's tracking, the strategy that whether will carry out display parameters adjustment, lasting viewing area that can be different with condition setting according to different demands.When lasting viewing area arranges greatlyr, substantially watch under the condition of requirement meeting, can avoid frequent and adjust the problems such as the screen flicker that brings, computing complexity, and will continue viewing area, to arrange hour, can improve the precision of adjustment, obtain more excellent stereo display effect.

The present embodiment triggers the deterministic process of display parameters adjustment process, if there are at least two beholders while starting display parameters adjustment process, can trigger for conduct in following embodiment the deterministic process of display parameters adjustment process, but the adjustment process of the display parameters of each embodiment also can there be other conditions or also can carry out in real time below.

Embodiment bis-

The present embodiment carries out the adjustment of display parameters according to the geometric distance of the beholder position projection centre corresponding with the valuation to be evaluated of display parameters.

The present embodiment tracking mode bore hole stereo display control method as shown in Figure 8, comprises the adjustment process of display parameters, and this process comprises:

Step 110, the valuation to be evaluated of taking out the display parameters of setting;

The display parameters of setting refer to for realizing many people follows the tracks of the display parameters that the target viewing area under scene is adjusted.The present embodiment comprises display unit arrangement cycle and display unit deviant.But in other embodiment, can be that display unit is arranged one or more in cycle, display unit deviant, spectrophotometric unit deviant and spectrophotometric unit width.When the adjustable display parameters of setting are one or have a plurality of but while adjusting respectively, be once to take out a valuation to be evaluated, if any a plurality of display parameters and adjust simultaneously, once take out one group of valuation to be evaluated.

The present embodiment is once one group of valuation to be evaluated of taking out to be assessed, and comprises a display unit arrangement valuation to be evaluated in cycle and the valuation to be evaluated of a corresponding display unit deviant.But, if once a parameter is entered to adjust, once a valuation to be evaluated of taking out is assessed in other embodiments.

Display unit is arranged the valuation to be evaluated in cycle and can be taken out in such a way: according to described beholder's position calculation, go out the viewing distance scope that maximum viewing distance and minimum viewing distance by beholder limit; Then calculate display unit corresponding to described viewing distance scope and arrange the span in cycle; Then in the span in described display unit arrangement cycle, take out the valuation to be evaluated that display unit is arranged the cycle.Because being a display unit, the size of the span of display unit deviant arranges the cycle, therefore after the valuation to be evaluated in display unit arrangement cycle is determined, display unit is arranged to this valuation to be evaluated in cycle as the span of corresponding display unit deviant, can take out the valuation to be evaluated of a plurality of display unit deviants.Each display unit is arranged the valuation to be evaluated in cycle and can, corresponding to the valuation to be evaluated of a plurality of display unit deviants, as one group of valuation to be evaluated, be assessed together.

The value mode of spectrophotometric unit width is similar to the value mode that display unit is arranged the cycle, and the value mode of the display unit deviant that the value mode of the spectrophotometric unit deviant that spectrophotometric unit width is corresponding and display unit arrangement cycle are corresponding is similar.Do not repeat them here.

Although the value mode of the present embodiment as above, but the present invention is not limited to this, as arranged the span that cycle and/or spectrophotometric unit width set in advance a span and obtain corresponding display unit deviant and/or spectrophotometric unit deviant for display unit, and do not consider beholder's position yet.Or, can first according to beholder's viewing distance, calculate after an average, then a setting range of take centered by this average is the span that display unit is arranged cycle and/or spectrophotometric unit width, etc.

During concrete value, can at display unit, arrange the span in cycle, take out respectively valuation to be evaluated in the span of corresponding display unit deviant according to the step-length of setting.Can get all values according to a step-length, also can use a plurality of step-lengths, first by larger step-length, get valuation to be evaluated, as there is no suitable value after the valuation assessment to be evaluated of taking out, then take out valuation to be evaluated by less step-length.And in the order of value and assessment, can once take out all valuations to be evaluated and then assessment, also (display parameters take out one can to take out one or one group of valuation to be evaluated, while having a plurality of display parameters, take out a plurality of simultaneously) after just to this, maybe this is organized valuation to be evaluated and assesses, and then get the next one or one group of valuation to be evaluated is assessed.The concrete processing the present invention here is not limited.

Step 120, according to the position of at least two beholders' position and projection centre corresponding to described valuation to be evaluated, take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted;

While only having a beholder's position, can use other control method, the present invention is not discussed.

As shown in Figure 9, this step can be divided into following steps again:

Step 1201, to one of display parameters or one group of valuation to be evaluated, calculates the position of corresponding projection centre;

The corresponding relation of the position of projection centre and the valuation to be evaluated of display parameters can calculate in real time, also can preserve in advance.

Step 1202, calculates each beholder's position and the geometric distance between immediate projection centre separately, and obtains this geometric distance sum of all beholders or the weighted average of this geometric distance;

Two quadrangles are as shown in figure 10 positioned in XZ plane, p1 and p2 represent respectively the first beholder and the second beholder's position, its immediate projection centre and p1, p2 is in same XZ plane, and O1O2 represents respectively and p1, immediate two projection centres of p2, L1 and L2 represent respectively summit and the projection centre O1 on target viewing area longitudinally, the line of O2, L3 is through O1O2 and is parallel to the straight line of display screen, L3 is viewing ratio to the distance of display screen.P1b1, p2b2 is the straight line that is parallel to L3.P1a1 be p1 to the vertical line of L3, P2a2 is that p2 is to the vertical line of L3.

The first beholder's the position p1 of take is example, in literary composition, the length of the line segment O1p1 of this plane is defined as to the point-to-point distance of this beholder projection centre O1 immediate with it, the length of line segment p1b1 is defined as to this beholder to the lateral separation of projection centre O1, the length of the length of line segment O1b1 or p1a1 is defined as to this beholder to the fore-and-aft distance of projection centre O1.

Above-mentioned weighted average can be to average, but also can compose different weights to the beholder of diverse location, and weights are as can be rule of thumb arranged or determining by modes such as emulation, debugging.

In the present embodiment, what when calculating, adopt is the point-to-point distance of beholder's projection centre immediate with it.But also can adopt in other embodiments, lateral separation or the fore-and-aft distance of beholder's projection centre immediate with it.

Step 1203, all valuations to be evaluated are completed after the calculating of above-mentioned two steps, using one corresponding or an one group of desired value that valuation to be evaluated is adjusted as display parameters minimum in the weighted average of a plurality of geometric distance sums that obtain or described a plurality of geometric distances.

In some change examples of the present embodiment, position that can also described beholder and the separately minimum of the fore-and-aft distance between immediate projection centre are alternative condition, select the value of the first display parameters, take again described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters; Or, take described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters, take again described beholder's position and separately the fore-and-aft distance minimum between immediate projection centre be alternative condition, select the value of the first display parameters.

Step 130, carries out display parameters adjustment according to the desired value of described display parameters adjustment.

Because beholder more approaches projection centre, just more likely produce stereoscopic vision.Therefore, the present embodiment using each beholder's position and separately the geometric distance sum between immediate projection centre as evaluation function, take the distance that obtains and or the weighted average minimum of distance determine the desired value of display parameters adjustment as alternative condition, to obtain more excellent whole viewing effect.

Although being the valuation to be evaluated of once taking out two parameters, above-described embodiment assesses simultaneously, but, in another embodiment, also can first take out one of them, as display unit, arranging the valuation to be evaluated in cycle (as spectrophotometric unit width) assesses, as above, just now in computing, service range should adopt fore-and-aft distance defined above to the method adopting during assessment.According to assessment, select after the desired value of display unit arrangement cycle adjustment, according to the valuation to be evaluated of the desired value taking-up display unit deviant (or spectrophotometric unit deviant) that the display unit arrangement cycle is adjusted, assess again, during computing, lateral separation defined above should be adopted, just adjustment can be completed select the value of display unit deviant according to assessment after.

In addition, can increase some alternative conditions to the present embodiment, obtain some and become example.

For example, in step 1202, to one of display parameters or one group of valuation to be evaluated, except calculating all beholders' position and separately the geometric distance sum between immediate projection centre, can also judge whether all beholders are not in contrary vision area simultaneously, if have beholder not in contrary vision area, abandon this or one group of assessed value.Certainly this judgement also can be carried out or first carry out after calculating this geometric distance sum of all beholders.So, be equivalent to by alternative condition become with each beholder's position and separately minimum the and all beholders of the distance sum between immediate projection centre not in contrary vision area.This is become to example changes a little, there iing beholder not in contrary vision area, not to abandon this or one group of assessed value, but record each or one group of assessed value corresponding not in beholder's number of contrary vision area, the beholder weighted average of described geometric distance sum or described geometric distance is minimum and in contrary vision area is minimum is alternative condition.

And for example, at another, become in example, to each or one group of assessed value, according to the position of its corresponding target viewing area, determine again and be positioned at this maybe number of the beholder of target viewing area corresponding to this group assessed value, in when assessment, take that to have maximum beholders be alternative condition in target viewing area and each beholder's position with the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance separately, select the desired value of display parameters adjustment.

As shown in figure 11, the present embodiment tracking mode naked-eye stereoscopic display system can be the naked-eye stereoscopic display system of double vision point or many viewpoints, comprises tracking means 10, display control unit 20, vision-control device 30 and three-dimensional display 40.Wherein:

Tracking means 10, for obtaining each beholder's positional information, can comprise image collecting device and image processing apparatus.

Display control unit 20, for according at least two beholders' positional information, is assessed the valuation to be evaluated of described display parameters, according to assessment result, determines the desired value that described display parameters are adjusted.

Vision-control device 30 is for adjusting described display parameters according to the desired value of the definite display parameters adjustment of described display control unit.

Three-dimensional display 40 is for showing stereo-picture.This three-dimensional display can be for supporting the three-dimensional display of double vision point or many viewpoints.

Above-mentioned three-dimensional display, display control unit and vision-control device can be arranged in a display device, as TV, notebook, mobile phone, digital camera, video camera etc.But can be arranged on a plurality of equipment, the present invention is not limited this yet.

Especially, as shown in figure 12, display control unit comprises:

The sub-device of value, for taking out the valuation to be evaluated of the display parameters of setting.Concrete processing mode as described above.

Assess sub-device, for according to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.Concrete processing method and for example become the above, no longer repeats.

At other, become in example, the sub-device of assessing also can be according to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least with described beholder's position and the weighted average of the geometric distance sum between immediate projection centre or described geometric distance is minimum separately, and all beholders are not alternative condition in contrary vision area, select the desired value that described display parameters are adjusted from described valuation to be evaluated; Or, according to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least with described beholder's position and the weighted average of the geometric distance sum between immediate projection centre or described geometric distance is minimum separately, and the beholder in contrary vision area is minimum is alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.

Alternatively, described display control unit also comprises:

Adjust the sub-device of judgement, be used for according to the position of the lasting viewing area corresponding with current display parameters, described beholder's position, judge whether described beholder is all positioned at described lasting viewing area, as inequality be positioned at this lasting viewing area and as described in beholder while having two at least, start the sub-device of described value and the sub-device of assessment carries out the adjustment of display parameters.

The present invention also provides a kind of tracking mode bore hole stereoscopic display device, comprises display screen and display control unit as above.

Embodiment tri-

The present embodiment carries out the adjustment of display parameters according to the position relationship of the target viewing area corresponding with the valuation to be evaluated of display parameters, beholder position.

The present embodiment tracking mode bore hole stereo display control method as shown in figure 13, comprises the adjustment process of display parameters, and this process comprises:

Step 210, the valuation to be evaluated of taking out the display parameters of setting;

This step is with reference to the step 110 of embodiment bis-.

Step 220, according to the position of at least two beholders' position and target viewing area corresponding to described valuation to be evaluated, take and have maximum beholders to be positioned at target viewing area as alternative condition, selects the desired value that described display parameters are adjusted from described valuation to be evaluated;

As shown in figure 14, this step can be divided into following steps again:

Step 2201, one or one group of valuation to be evaluated of taking out display parameters, calculate the position of corresponding target viewing area;

Target viewing area generally has a plurality of, and the corresponding relation of the valuation to be evaluated of its position and display parameters can calculate in real time, also can preserve in advance.

Step 2202, compares each beholder's position and the position of the target viewing area calculating, and judges whether that all beholders are all in target viewing area, if so, and execution step 2203, if not, execution step 2204;

Step 2203, using this, maybe this organizes the desired value that valuation to be evaluated is adjusted as described display parameters, finishes;

Step 2204, maybe this organizes the next beholder's in its corresponding target viewing area of valuation to be evaluated number to record this;

Step 2205, judges whether to take out the valuation all to be evaluated of display parameters, if so, and execution step 2206, otherwise, return to step 2201;

Step 2206, using there being maximum beholders to be positioned at one or one group of desired value that valuation to be evaluated is adjusted as described display parameters of target viewing area, finishes.

Step 230, carries out display parameters adjustment according to the desired value of described display parameters adjustment.

In the present embodiment, target viewing area can be but be not limited to following a kind of in several: watch the regions that in the group of subarea, all outlines of watching subarea delimited for one; Watch in the region that in the group of subarea, all outlines of watching subarea delimited for one, by the region that half interocular distance of translation to the inside limits in vertical direction separately, each limit in the region of this delimitation; A region of watching the outline delimitation of the positive vision area of all adjacent viewpoint images in the group of subarea; An and positive vision area of watching all adjacent viewpoint images in the group of subarea.Preferably, it is identical with lasting viewing area or be included in this lasting viewing area that target viewing area can arrange, if it is little compared with lasting viewing area that target viewing area arranges, the minute movement of the beholder in border, target viewing area is not easy to shift out lasting viewing area, just can not occur to adjust frequently.

Tracking mode naked-eye stereoscopic display system and the embodiment bis-of the present embodiment are basic identical, also comprise tracking means, display control unit, vision-control device and three-dimensional display, wherein display control unit also comprises the sub-device of value and the sub-device of assessment, difference is, the function of assessing sub-device is different with the unit comprising.In the present embodiment, assess sub-device for the position of target viewing area corresponding to the valuation to be evaluated of basis at least two beholders' position and the display parameters of taking-up, take and have maximum beholders to be positioned at target viewing area as alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.The present embodiment also provides a kind of display device that comprises above-mentioned display control unit.

Tracking mode bore hole stereo display control method of the present invention, after getting a plurality of beholders' position, the desired value by determining that display parameters are adjusted, falls into as far as possible in target viewing area beholder, thereby can enjoy stereo display effect.Also increased thus the viewing areas of naked-eye stereoscopic display.The method also can, for many view system, have better effect during for many viewpoints for double vision dot system.

It will be understood by those skilled in the art that all or part of step in said method can come instruction related hardware to complete by program, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits, and correspondingly, each the module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a tracking mode bore hole stereo display control method, wherein, comprises the adjustment process of the display parameters of setting:

According to described desired value, described display parameters are adjusted;

Wherein, according at least two beholders' positional information, the valuation to be evaluated of described display parameters is assessed, according to assessment result, is determined the desired value that described display parameters are adjusted, comprising:

According to the geometric distance of at least two beholders' the positional information projection centre corresponding with described valuation to be evaluated, determine the desired value that described display parameters are adjusted, be specially: according to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.

Or, according to the position relationship of at least two beholders' the positional information target viewing area corresponding with described valuation to be evaluated, determine the desired value that described display parameters are adjusted, be specially: according to the position of described beholder's position and target viewing area corresponding to described valuation to be evaluated, at least take and have maximum beholders to be positioned at target viewing area as alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted.

2. the method for claim 1, is characterized in that:

Described alternative condition also comprises that all beholders are not in contrary vision area; Or described alternative condition also comprises in the beholder of contrary vision area minimum.

3. the method for claim 1, is characterized in that: described target viewing area is a kind of in following several region:

4. the method as described in claim 1 or 2 or 3, is characterized in that, also comprises the deterministic process of the adjustment process that whether starts described display parameters:

According to the position of the lasting viewing area corresponding with current display parameters, described beholder's position, judge whether described beholder is all positioned at described lasting viewing area, as inequality be positioned at this lasting viewing area and as described in beholder while having two at least, start the adjustment process of described display parameters.

5. method as claimed in claim 4, is characterized in that:

Described lasting viewing area is a kind of in following several region:

6. method as claimed in claim 1 or 2, is characterized in that, described beholder's position and the separately geometric distance between immediate projection centre, refer to:

7. method as claimed in claim 6, is characterized in that:

Take described beholder's position and separately the fore-and-aft distance minimum between immediate projection centre be alternative condition, select the value of the first display parameters; Or,

Take described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters; Or,

Take described beholder's position and separately the point-to-point between immediate projection centre apart from minimum, be alternative condition, select the value of the first display parameters and the value of the second display parameters simultaneously; Or,

Take described beholder's position and separately the fore-and-aft distance minimum between immediate projection centre be alternative condition, select the value of the first display parameters, take again described beholder's position and separately the lateral separation minimum between immediate projection centre be alternative condition, select the value of the second display parameters; Or,

8. the method for claim 1, is characterized in that:

9. method as claimed in claim 8, is characterized in that:

10. the method for claim 1, is characterized in that:

11. 1 kinds of tracking mode bore hole display control units, is characterized in that, comprising:

Assess sub-device, positional information at least two beholders of basis, valuation to be evaluated to described display parameters is assessed, according to assessment result, determine the desired value that described display parameters are adjusted, geometric distance specifically at least two beholders' of basis the positional information projection centre corresponding with described valuation to be evaluated, determine the desired value that described display parameters are adjusted, be specially: according to the position of described beholder's position and projection centre corresponding to described valuation to be evaluated, at least take described beholder's position and separately the weighted average minimum of the geometric distance sum between immediate projection centre or described geometric distance be alternative condition, from described valuation to be evaluated, select the desired value that described display parameters are adjusted,

12. display control units as claimed in claim 11, is characterized in that:

Described alternative condition further comprises: all beholders are not in contrary vision area; Or minimum in the beholder of contrary vision area.

13. display control units as claimed in claim 11, is characterized in that:

Described target viewing area is a kind of in following several region:

14. display control units as described in claim 11 or 12 or 13, is characterized in that, described display control unit also comprises:

15. display control units as claimed in claim 11, is characterized in that:

16. display control units as claimed in claim 11, is characterized in that:

17. 1 kinds of tracking mode bore hole stereoscopic display devices, comprise display screen and display control unit, it is characterized in that, described display control unit adopts the display control unit as described in arbitrary in claim 11～13,15,16.

18. 1 kinds of tracking mode naked-eye stereoscopic display systems, is characterized in that, comprising:

Tracking means, for obtaining each beholder's positional information;

Display control unit as described in the arbitrary claim in claim 11 to 13,15,16;

Three-dimensional display, for showing stereo-picture;