CN101689354B

CN101689354B - Method for display of 3d image

Info

Publication number: CN101689354B
Application number: CN2007800535512A
Authority: CN
Inventors: 威廉·格本斯·瑞德曼
Original assignee: Thomson Licensing SAS
Current assignee: Thomson Licensing SAS
Priority date: 2007-06-27
Filing date: 2007-06-27
Publication date: 2013-11-06
Anticipated expiration: 2027-06-27
Also published as: JP2010534004A; KR20100027168A; KR101389074B1; EP2168119A4; WO2009002314A1; EP2168119A1; JP4932036B2; CN101689354A

Abstract

A method of displaying a 3D image having the steps of providing a first left eye image (406) and a first right eye image (416) for display and alternately displaying the first left eye image (406) and the first right eye image (416), wherein the first left eye image and first right eye image are displayed for an unequal number of times.

Description

Be used for showing the method for 3-D view

Technical field

The present invention relates to optical projection system (projection system).Particularly, the present invention relates to three-dimensional (3D) optical projection system.

Background technology

Be well known that, by projected image being converted to so-called three-dimensional (3D) image, can strengthen projected image to make it having depth perception.This is generally to carry out different optical polarizations by the image that the image that the left eye of wanting viewed person is watched and the right eye of wanting viewed person are watched to realize.As the beholder by using polarizing filter lens (polarized filter lens) when watching the image of polarization, will feel 3D effect, described polarizing filter lens are configured to " 3D watches glasses " usually, should " 3D watches glasses " have for the polarizing filter of beholder's left eye and are used for the different polarizing filter of polarization mode of beholder's right eye.When this 3D watches glasses to be used to watch 3D rendering, beholder's left eye only sees by suitable polarization with the light by the polarizing filter that is associated with left eye, and beholder's right eye is only seen by suitable polarization with the light by the polarizing filter that is associated with beholder's right eye.The method of above-mentioned demonstration 3D rendering is called as passive 3D and watches, wherein projector is according to twice rotation left eye information and the right eye information of typical frame speed, and the screen/light filter in lens the place ahead of projector/polarization restraining mass polarization of rotation projected image in the following manner: this mode makes the image of every eyes by the corresponding polarizing filter of above-mentioned secondary passive stereo glasses.It is alternative that passive 3D watches is that initiatively 3D watches, wherein each beholder wears the glasses with LCD dimmer, and described LCD dimmer is synchronoused working with projector, so that when projector shows left-eye image, the right eye dimmer of active stereoscopic glasses is closed, and vice versa.

A problem of current system be used to 3D rendering is provided is that some 3D rendering beholder reports and claims to have felt that " flicker " (flicker).More generally, flicker is allowed to watch feel during whole period of image not have First view to watch image-related at Second Sight with human optical system.Along with the time advances, Second Sight can not be watched image, and First view is watched image simultaneously.Eyes sequentially, are alternately allowed to watch image.Certainly, the polarization of the image that First view and Second Sight are watched is different, as previously mentioned.

Fig. 1 of prior art shows the timing that utilizes traditional system that is used for providing 3D rendering to beholder's left eye and right eye, image to be shown.Arrow 100 has been indicated the direction of expression time increase.Horizontal line 102 expression the first left-eye image (hereinafter, " left-eye image " is called as " LEI ") must ready left eye for projecting to the beholder time.LEI time period 104 (" LEI time period " be called as " LEITP ") hereinafter, expression is sent to timing and the duration of projector to a LEI (or first left-eye frame) from image composer (or image server).The time that horizontal line 106 expression the 2nd LEI must be ready watch for beholder's left eye, and timing and the duration of LEITP 108 expression transmission the 2nd LEI.Similarly, the time that horizontal line 110 expression the 3rd LEI must be ready watch for beholder's left eye, and timing and the duration of LEITP 112 expression transmission the 3rd LEI.In traditional system that is used for providing 3D rendering, LEI and eye image are (hereinafter, " eye image " is called as " REI ") send and can be for to watch be basically synchronous, thereby they basically arrive projector and can be used for projection from maker simultaneously.This synchronized delivery is had respectively with LEITP104,108 and 112 beginning and beginning and the deadline of deadline basic synchronization by the first, second, and third REI time period 114,116 and 118 (" REI time period " be called as " REITP ") hereinafter, and represents.The time slot between completing of sending of LEI and REI is commonly referred to as and sends intermittently 120, and usually can watch the shared time corresponding to the actual image that makes of projector.

The simplest traditional 3D rendering system is single sudden strain of a muscle (single flash) system, this system only between a LEI and a REI alternately once, then just advance to and show the 2nd LEI and the 2nd REI subsequently.Flashed (flash) during first duration 124 of LEI by a LEI is shown, a REI was flashed during first duration 128 of REI subsequently, represented the timing of single sudden strain of a muscle system 122.Next, the 2nd LEI was flashed during the 2nd the first duration 130 of LEI, and the 2nd REI was flashed during the 2nd the first duration 132 of REI subsequently.At last, the 3rd LEI was flashed during the 3rd the first duration 134 of LEI, and the 3rd REI was flashed during the 3rd the first duration 136 of REI subsequently.As shown in the figure, the interval 126 that switches wherein, when switching, does not illustrate image to any eyes between LEI and REI.Yet this list sudden strain of a muscle system can cause undesirable flicker.

In order to solve the problem of flicker, developed two sudden strains of a muscle (double flash) systems, this system is between LEI and REI alternately twice, just then advance to second group of LEI and REI.Flashed during first duration 140 of LEI by a LEI is shown, a REI was flashed during first duration 142 of REI subsequently, represented the timing of two sudden strain of a muscle system 138.Next, a LEI was flashed again in second duration 144 of LEI, and a REI is flashed during second duration 146 of REI again subsequently.Next, the 2nd LEI was flashed during the 2nd the first duration 148 of LEI, and the 2nd REI was flashed during the 2nd the first duration 150 of REI subsequently.Next, the 2nd LEI was flashed again in the 2nd the second duration 152 of LEI, and the 2nd REI is flashed during the 2nd the second duration 154 of REI again subsequently.Next, the 3rd LEI was flashed during the 3rd the first duration 156 of LEI, and the 3rd REI was flashed during the 3rd the first duration 158 of REI subsequently.Next, the 3rd LEI was flashed again in the 3rd the second duration 160 of LEI, and the 3rd REI is flashed during the 3rd the second duration 162 of REI again subsequently.Although two sudden strain of a muscle system 138 is the improvement to single sudden strain of a muscle system 122, this pair sudden strain of a muscle system 138 still can cause some beholders to feel undesirable flicker.

By providing a kind of three to dodge (triple flash) system and carried out further alleviating the trial of flicker, then this three sudden strain of a muscle systems between LEI and REI alternately three times advance to later those group LEI and REI.represent the timing of three sudden strain of a muscle systems 164 by the image that flashes in the following order is shown: a LEI flashes 166 for the first time, the one REI flashes 168 for the first time, the one LEI flashes 170 for the second time, the one REI flashes 172 for the second time, the one LEI flashes 174 for the third time, the one REI flashes 176 for the third time, the 2nd LEI flashes 178 for the first time, the 2nd REI flashes 180 for the first time, the 2nd LEI flashes 182 for the second time, the 2nd REI flashes 184 for the second time, the 2nd LEI flashes 186 for the third time, the 2nd REI flashes 188 for the third time, the 3rd LEI flashes 190 for the first time, the 3rd REI flashes 192 for the first time, the 3rd LEI flashes 194 for the second time, the 3rd REI flashes 196 for the second time, the 3rd LEI flashes 198 for the third time, and the 3rd REI flash for the third time 200.Certainly, flash at every turn and be switched interval 126 and separate.Further alleviated flicker although this three sudden strain of a muscle system 164 compares with two sudden strain of a muscle system 138, not all legacy equipment can both be in the situation that do not reduce the high speed that the whole resolution of image adapts between LEI and REI and switch.

Although have the method for many advanced persons' demonstration 3D rendering, still have room for improvement with regard to alleviating flicker.

Summary of the invention

The present invention is a kind of method for showing 3-D view in one embodiment, it comprises: the first image that has the first polarization for beholder's an eyes demonstration, the first image that has the second polarization for beholder's another eyes demonstration, and alternately repeat these step displays, wherein each in these step displays be performed at least twice and the first image with second polarization of the first image ratio with first polarization show more times.The method also comprises: the second image that has the first polarization for beholder's an eyes demonstration, the second image that has the second polarization for beholder's another eyes demonstration, and alternately repeat step display to the second image, wherein each in these step displays be performed at least twice and the second image with second polarization of the second image ratio of wherein having the first polarization show more times.

Description of drawings

Fig. 1 of prior art is the schematic diagram that system is dodged in sudden strain of a muscle single according to the tradition of prior art, two sudden strain of a muscle and three;

Fig. 2 is the schematic diagram according to 3D optical projection system of the present invention;

Fig. 3 is the schematic diagram according to alternately leading (alternating dominance) non-integer (non-integer) timing of the present invention;

Fig. 4 is the schematic diagram according to ready leading (ready dominance) non-integer scheme of the present invention.

Embodiment

With reference now to the Fig. 2 in accompanying drawing,, show according to 3D optical projection system of the present invention.Optical projection system 300 comprises image source 302 (perhaps image server), is used for by image link 304 (it can be encrypted pair of high definition serial digital interface (HD-SDI)), LEI and REI being provided to digital projector 306.LEI and REI are also passed through polarization unit and driver 310 from projector's 306 projections subsequently through projecting lens 308, and this polarization unit and driver 310 are provided to the polarization phase signal 312 from projector 306.After by polarization unit and driver 310, LEI and REI are directed on screen 316 as projection 314.Beholder 318 can utilize left eye polarized lens 320 and right eye polarized lens 322 to feel 3D rendering.In operation, when LEI was transmitted through polarization unit and driver 310, LEI was by with the first polarization scheme polarization.The LEI of polarization is reflexed to beholder 318 from screen 316 by left eye polarized lens 320.Similarly, when REI was transmitted through polarization unit and driver 310, REI was by with the second polarization scheme polarization.The REI of polarization is reflexed to beholder 318 from screen 316 by right eye polarized lens 322.Should be understood that the polarization scheme can comprise use P polarization/S polarization or circular polarization clockwise/circular polarization counterclockwise.The present embodiment requires the polarization of screen 316 retaining projection 314 when projection 314 is reflexed to beholder 318 from screen 316.

In alternate embodiment, 3D optical projection system 300 can comprise infrared transmitter 324,, the active dimmer glasses that are used for wearing in conjunction with user 326 use.Initiatively the dimmer glasses comprise left eye initiatively dimmer 328 and right eye active dimmer 330.Initiatively the dimmer glasses comprise the receiver (not shown), are used for receiving the signal from infrared transmitter 324 (or transmitter).Offering initiatively, the signal of dimmer glasses makes left eye active dimmer 328 and right eye active dimmer 330 synchronize with the LEI that is provided by projector 306 and REI, allow to watch when machine shows thereby make left eye active dimmer 328 be projected at LEI, and right eye active dimmer 330 when being projected the machine demonstration, LEI does not allow to watch.Similarly, right eye initiatively dimmer 330 allows to watch when REI is projected the machine demonstration, and left eye active dimmer 328 does not allow to watch when REI is projected machine 306 demonstration.Certainly, in the situation that infrared transmitter 324, left eye active dimmer 328 and right eye active dimmer 330 are used to watch 3D rendering, 3D optical projection system 300 will not need to use polarization unit and driver 310, left eye polarized lens 320 or right eye polarized lens 322, and screen 316 does not need the polarization of retaining projection 314 yet.

Another of 3D optical projection system 300 substitutes the colored pectination light filter of the arrowband RGB that can comprise mutual exclusion, is used for only allowing LEI to pass through the colored pectination light filter (not shown) in left side and only allows REI to pass through right side colored pectination light filter (not shown).In this embodiment, have the LEI that is fit to the color component that filtered by colored pectination light filter and REI by from projector's 306 projections.

Certainly, 3D optical projection system 300 is suitable for various speed and utilizes various timings (describing hereinafter) to provide respectively LEI and left eye from REI to beholder and right eye.

With reference now to the Fig. 3 in accompanying drawing,, Fig. 3 shows according to alternately leading non-integer timing 400 of the present invention.Alternately leading non-integer timing 400 is suitable for being used for providing respectively LEI and left eye from REI to beholder and right eye in conjunction with 3D optical projection system 300.Arrow 402 has been indicated the direction of expression time increase.Horizontal line 404 expression the one LEI must ready left eye for projecting to the beholder time.LEITP 406 expressions are sent to timing and the duration of projector to a LEI (or first left-eye frame) from image composer (or image server).Provide in the scheme of 3D rendering at this, sending and can supplying to watch of LEI and REI be basically synchronous, thereby they basically arrive projector and can be used for projection from maker simultaneously.This synchronized delivery is had respectively with LEITP 406,410 and 414 beginning and beginning and the deadline of deadline basic synchronization by first, second, and third REITP 416,418 and 420 and represents.The sending of LEI completed and LEI must be ready be commonly referred to as for the time slot between the time of projection and sends intermittently 422, and it can watch the shared time corresponding to the actual image that makes of projector usually.

Still with reference to figure 3, in this embodiment, alternately leading non-integer timing 400 replaces 2.5 times between LEI and REI, then advances to second group of LEI and REI.Flashed during first duration 424 of LEI by a LEI is shown, a REI was flashed during first duration 426 of REI subsequently, represented the timing of this alternately leading non-integer timing 400.Next, a LEI is flashed during second duration 428 of LEI again, and a REI is flashed during second duration 420 of REI again subsequently.Next, a LEI was flashed during the 3rd duration 432 of LEI, and a REI after this no longer flashes.Scheme 400 then advance to and show second group of LEI and REI.

Particularly, the time that horizontal line 408 expression the 2nd REI must be ready watch for beholder's right eye, and timing and the duration of LEITP 410 expression transmission the 2nd LEI.For this second group of LEI and REI, at first show REI rather than LEI.Particularly, the 2nd REI was flashed during the 2nd the first duration 434 of REI, and the 2nd LEI was flashed during the 2nd the first duration 436 of LEI subsequently.Next, the 2nd REI is flashed during the 2nd the second duration 438 of REI again, and the 2nd LEI is flashed during the 2nd the second duration 440 of LEI again subsequently.Next, the 2nd REI was flashed during the 2nd the 3rd duration 442 of REI, and the 2nd LEI after this no longer flashes.Scheme 400 then advance to and be shown to the 3rd group of LEI and REI.

Similarly, the time that horizontal line 412 expression the 3rd LEI must be ready watch for beholder's left eye, and timing and the duration of LEITP 414 expression transmission the 3rd LEI.The same with REI with first group of LEI, in this 3rd group of LEI and REI, at first show LEI rather than REI.Finally, the 3rd LEI was flashed during the 3rd the first duration 444 of LEI, and the 3rd REI was flashed during the 3rd the first duration 446 of REI subsequently, and the 3rd LEI is flashed during the 3rd the second duration 448 of LEI again subsequently.Next, the 3rd REI is flashed during the 3rd the second duration 450 of REI again.Next, the 3rd LEI was flashed during the 3rd the 3rd duration 452 of LEI, no longer the 3rd REI was carried out any flashing after this.Scheme 400 then advance to is shown to the 4th and subsequent those group LEI and REI (not shown) by this way.Switching interval 454 (to any eyes, image not being shown therebetween) appears between each Alternation Display of LEI and REI, and can be used for making the undesirable optics of crosstalking between LEI and REI to feel to reach bottom line, this crosstalking is to cause switching time due to polarization unit and driver 310 or dimmer 328 and 330.The non-integer timing is by increasing in the situation that do not exceed the limit bandwidth of many traditional projectors the minimizing that number of times that each LEI and REI be illustrated has been realized the flicker felt.Due to the limit bandwidth that does not exceed equipment, so LEI and REI can be transmitted by its full resolution, wright of image is desirable just for this.

With reference now to the Fig. 4 in accompanying drawing,, Fig. 4 shows according to ready leading non-integer timing 500 of the present invention.Ready leading non-integer timing 500 is suitable for being used for providing respectively LEI and left eye from REI to beholder and right eye in conjunction with 3D optical projection system 300.Arrow 502 has been indicated the direction of expression time increase.Horizontal line 504 expression the one LEI must ready left eye for projecting to the beholder time.LEITP 506 expressions are sent to timing and the duration of projector to a LEI (or first left-eye frame) from image composer (or image server).The time that horizontal line 508 expression the 2nd LEI must be ready watch for beholder's left eye, and LEITP510 represents to transmit timing and the duration of the 2nd LEI.Similarly, the time that horizontal line 512 expression the 3rd LEI must be ready watch for beholder's left eye, and timing and the duration of LEITP 514 expression transmission the 3rd LEI.Provide the system of 3D rendering different from traditional being used for, LEI and REI send and can not be synchronous for watching, thereby they arrive projector and can be used for projection from maker at different time.This asynchronous send to be had respectively by first, second, and third REITP 516,518 and 520 have beginning and the deadline of essence skew to represent with respect to LEITP 506,510 and 514 beginning and deadline.Yet, should be understood that in other alternate embodiments of the present invention, asynchronous sending can be that LEI and REI group are provided serially.Horizontal line 522 expression the 2nd LEI and REI be the ready time for watching.The sending of LEI completed and LEI must be ready be commonly referred to as for the time slot between the time of projection and sends intermittently 524, and it can watch the shared time corresponding to the actual image that makes of projector usually.

Still with reference to figure 4, in this embodiment, ready leading non-integer timing 500 replaces between LEI and REI with fixing speed, and setting about showing follow-up LEI and REI when ready at follow-up LEI and REI, is also like this even specific LEI or REI must be illustrated more or less time than previous LEI or REI.Flashed during first duration 526 of LEI by a LEI is shown, a REI was flashed during first duration 528 of REI subsequently, represented the timing of this ready leading non-integer timing 500.Next, a LEI is flashed during second duration 530 of LEI again, and a REI is flashed during second duration 532 of REI again subsequently.Next, a LEI was flashed during the 3rd duration 534 of LEI, and a REI was flashed during the 3rd duration 536 of REI subsequently.Next, the 2nd LEI was flashed during the 2nd the first duration 538 of LEI, and the 2nd REI was flashed during the 2nd the first duration 540 of REI subsequently.In addition, the 2nd LEI was flashed during the 2nd the second duration 542 of LEI, and the 2nd REI was flashed during the 2nd the second duration 544 of REI subsequently.Next, the 3rd LEI was flashed during the 3rd the first duration 546 of LEI, and the 3rd REI was flashed during the 3rd the first duration 548 of REI subsequently.In addition, the 3rd LEI was flashed during the 3rd the second duration 550 of LEI, and the 3rd REI is flashed during the 3rd the second duration 552 of REI again subsequently.At last, the 3rd LEI was flashed during the 3rd the 3rd duration 554 of LEI.Switching interval 554 (to any eyes, image not being shown therebetween) appears between each Alternation Display of LEI and REI, and can be used for making the undesirable optics of crosstalking between LEI and REI to feel to reach bottom line.The non-integer timing is not in the situation that exceed the minimizing that the limit bandwidth of many traditional projectors and/or polarization unit and driver has been realized the flicker felt.Due to the limit bandwidth that does not exceed equipment, so LEI and REI can be transmitted by its full resolution, wright of image is desirable just for this.

The feature of the preferred embodiments of the present invention can be a kind of method that shows 3D rendering, and it comprises the following steps: non-synchronously provide the first left-eye image and the first eye image for demonstration; At first that provided by complete since the first left-eye image and the first eye image, with basic fixing speed Alternation Display the first left-eye image and the first eye image; Non-synchronously provide the second left-eye image and the second eye image for demonstration; The demonstration of the first left-eye image is provided with the second left-eye image during by complete providing when the second left-eye image, and replaces the demonstration of the first eye image during by complete providing with the second eye image when the second eye image.In the method, the first left-eye image is provided by complete prior to the first eye image, and perhaps the first eye image is provided by complete prior to the first left-eye image.The feature of the method also can be number of times that the first left-eye image is shown and the shown number of times of the first eye image add and be not equal to the shown number of times of the second left-eye image and the shown number of times of the second eye image add and.Perhaps, the feature of the method can be that the first left-eye image and the first eye image are relative to each other that serial provides, and the serial after the first left-eye image and the first eye image of the second left-eye image and the second eye image provides.

The feature of another preferred embodiment of the present invention can be a kind of method that shows 3-D view, and it comprises: the first image that has the first polarization for beholder's an eyes demonstration; The first image that has the second polarization for beholder's another eyes demonstration; And alternately repeat these step displays, the first image that the first image ratio that wherein has the first polarization has the second polarization shows more times.The method also can comprise and alternately repeat these step displays, and wherein each step display is performed at least twice.

Below only illustration realize some in possibility of the present invention.In scope and spirit of the present invention, many other embodiment are possible.Therefore, wish that above the description is counted as exemplaryly rather than restrictive, and wishes that scope of the present invention is provided by the equivalent of claim and gamut thereof.

Claims

1. method that shows 3D rendering comprises the following steps:

Provide the first right left-eye image of the first image and the first eye image for demonstration; And

Described the first left-eye image that described the first image of Alternation Display is right and described the first eye image;

Described first eye image right with respect to described the first image wherein, described the first left-eye image is shown unequal number of times.

2. the method for demonstration 3D rendering according to claim 1, wherein, described the first left-eye image is at first shown.

3. the method for demonstration 3D rendering according to claim 1, wherein, described the first eye image is at first shown.

4. the method for demonstration 3D rendering according to claim 1, wherein, described the first left-eye image and described the first eye image provide substantially simultaneously.

5. the method for demonstration 3D rendering according to claim 1, further comprising the steps of:

Provide the second right left-eye image of the second image and the second eye image for demonstration; And

After showing described the first left-eye image and described the first eye image, described the second left-eye image of Alternation Display and described the second eye image;

Described second eye image right with respect to described the second image wherein, described the second left-eye image is shown unequal number of times.

6. the method for demonstration 3D rendering according to claim 5, wherein, described the first left-eye image is shown prior to described the first eye image, and described the second eye image is shown prior to described the second left-eye image.

7. the method for demonstration 3D rendering according to claim 5, wherein, described the first eye image is shown prior to described the first left-eye image, and described the second left-eye image is shown prior to described the second eye image.

8. the method for demonstration 3D rendering according to claim 5, described the first left-eye image and described the first eye image provide substantially simultaneously, and described the second left-eye image and described the second eye image provide substantially simultaneously.

9. a method that is used for showing 3-D view, comprise the following steps;

A.) eyes for the beholder show the first image with first polarization;

B.) the another eyes for the beholder show the first image with second polarization; And

C.) alternately repeat step display a.) and b.), each in wherein said step display be performed at least twice and described the first image ratio with first polarization have described first image of the second polarization shown more times.

10. method as claimed in claim 9, further comprising the steps of:

D.) the described eyes for described beholder show the second image with described first polarization;

E.) the described another eyes for described beholder show the second image with described second polarization;

F.) alternately repeat step display d.) and e.), wherein said step display d.) and e.) in each be performed at least twice and described the second image with second polarization of described the second image ratio with first polarization show more times.

11. a method that is used for showing 3-D view comprises the following steps:

A.) eyes for the beholder show the first image with first polarization;

C.) alternately repeat step display a.) and b.), described the first image that described the first image ratio that wherein has the first polarization has the second polarization shows more times.

12. method as claimed in claim 11 is further comprising the steps of:

D.) alternately repeat described step display a.) and b.), wherein said step display a.) and b.) in each be performed at least twice.