JPS63310086A - Three dimensional image displaying method - Google Patents

Abstract

PURPOSE:To obtain the stereoscopic image of reality by transforming so as to recognize as a stereoscopic image viewed at a stereoscopic glasses position correspondingly to a viewed position. CONSTITUTION:An image for a left eye and an image for a right eye recorded on a recording medium 6 are correctly stereoscopically viewed when the stereoscopic glasses 2 are situated at front positions 2L, 2R (reference position). When the glasses 2 move to 2L', 2R', this glasses position is detected by a glasses position detector 5 to execute a coordinate transforming processing corresponding to position information and the images for the left eye of A point and B point are respectively moved to AL', BL' and the images for the right eye are respectively moved to AR', BR'. The two points of the moved AL', AR' are respectively viewed by the left eye and the right eye, and then, they are seen as if they were in the A point when the glasses 2 are present in the reference position and similarly, the two points of the BL', BR' are respectively viewed by the left eye and the right eye, and then, they are seen as if they were present at the B point.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention alternately displays images for the right eye and images for the left eye on the screen of a display device, and 7. Viewing the image for the right eye with the right eye and viewing the image for the left eye with the left eye through stereoscopic glasses having a left eye shutter and a right eye shutter that open and close each other, the image can be seen in three dimensions.
Concerning dimensional image display force method.

[Prior Art] The above-mentioned three-dimensional display system is used for three-dimensional computer graphics, three-dimensional video, etc. The principle of this three-dimensional display system will be explained with reference to FIG. 8. 1a is, for example, the screen of a cathode ray tube display device, L is the left eye, R is the right eye,
2L is a shutter for the left eye of stereoscopic glasses, and 2R is a shutter for the right eye. Now, when expressing points A and B at positions raised from screen 1, on the screen, point AL is the left eye image of point A, point AR is the right eye image, point BL is the left eye image of point B, Point BR is displayed as an image for the right eye. Then, the left eye images AL, BL and the right eye images (TAR, BR) are projected alternately, and the left eye images AL, BL are projected. Viewing the images AL and BL for the right eye with the left eye, and when ARSBR is displayed on the image for the right eye, open the right eye shutter 2R and view the images AR and BR for the right eye with the right eye R. The figure A and B, which appear to float off the screen and connect points A and B, are recognized as a three-dimensional object.

[Problems to be Solved by the Invention] However, in the conventional three-dimensional image display method described above, even if the viewing position moves to the left or up or down, the same image A is displayed on the screen.
L, B L, and 1. Since this is handled by BR, changes caused by movement of the viewing position appear in an unnatural manner, distorting the recognized shape or making it unrealistic. That is, in the fjfJ8 diagram, the position of the sun increases from R to L'
, R', the image on screen 1a remains the same <Alt, Al1. [3R, BL, and therefore,
Looking from the moved eye positions L', R'', we see A, +'j,
Point B appears to be at position A', L3'.

In other words, what should appear as figure AB is figure A'B.
It looks like ', and it doesn't matter that you moved, and the image will be distorted when you compare it.

The present invention has been made to solve the above-mentioned conventional problems, and its objective is to provide a three-dimensional image display method in which the image A↑ appears as a stereoscopic image that correctly corresponds to the viewing position.

Means for Solving Problem E] The present invention which solves the above problems alternately displays images for the right eye and images for the left eye on the screen of the display device, and also alternately displays the right eye portion and the left eye portion in 014 closed mode. In the three-dimensional image display method, the image is viewed three-dimensionally by viewing the right-eye image with the right eye and viewing the left-mouth image with the left eye through the stereoscopic glasses. Detecting a position with respect to a display device screen, and converting a right-eye image and a left-eye image to be displayed in correspondence with the detected glasses position so that they are recognized as a three-dimensional image viewed at the glasses position. It is characterized by

[Effect 1] In the above configuration, the image on the display screen is transformed according to the position of the stereoscopic glasses, that is, the viewing position, so that it is recognized as a stereoscopic image seen at the position of the glasses, so the expression Even if the viewing position moves, the shape of the desired figure does not become distorted and is recognized as a realistic three-dimensional image viewed from a different point of view.

['-J! , Embodiments] Embodiments of the present invention on the downstream side will be described with reference to FIGS. 1 to 7.

FIG. 3 shows an example of a three-dimensional foot display system employing the three-dimensional image display method of the present invention. Reference numeral 1 indicates a display device having a display screen 1a such as a CRT, 2 indicates stereoscopic glasses including a left eye shutter 2L and a right eye shutter 2R, and 3 indicates a combination lens. The Cod Stereoscopic Glasses 2 have the following features:
The projector 4 is installed to detect the glasses position ().
It is attached. Reference numeral 5 denotes a glasses position detecting device, and this glasses position detecting device 5 detects the position of the glasses by detecting the bias from the projector 4, the details of which will be described later. The stereoscopic glasses 2 in this embodiment are of a liquid crystal shutter type connected to the computer 3 by wire, and are alternately opened and closed in synchronization with left-eye images and right-eye images that are alternately displayed. 6 is a recording medium, and video information expressed as coordinates is recorded on this recording medium 6. A joystick 7 can be operated to move an image on the screen of the display device 1.

The combiator 3 receives an image 11' from the recording medium 6.
One report is read out and a left-eye image and a right-eye image are alternately displayed on the screen 1a of the display device 1. In the present invention, the left-eye image and right-eye image are displayed by the glasses position detection device 5. According to the detected position information of the glasses 2, the image is converted so that it is recognized as a three-dimensional image seen at the position of the glasses.

That is, the image for the right eye and the image for the right eye recorded on the recording medium 6 are configured so that they can be viewed correctly in three dimensions when the stereoscopic glasses 2 are in the front positions indicated by 2L and 2R in the rjS1 diagram. Then, the second glasses position 2L
, 2Rf:: is set as a reference position, and an image ' constructed on the recording medium 6C assuming this reference position is set as a reference image.

In FIG. 1, the reference left-eye images of points A and B of the figure AB to be expressed are AL.

BL, the reference right-eye image is 1 to l(, Bl(). Now, if the glasses 2 have moved to the positions indicated by 2L' and 2R', this glasses position is detected by the glasses position detection device 5. , and performs coordinate conversion processing according to the position information, and then points A and B.
The left-eye images of the points A L' and B L' are respectively shown in the figure.
, the right daily video is shown in A1<'*B1<
Move to ゛. If you look at these two moved points A L' and A I with your left and right eyes, you can see
Similarly, 13L'
, 13R', 2 r':jN, respectively, look as if they were at the same point B when viewed with the left eye and the right eye. In other words, even if the position of the glasses 2 moves, the figure AB will not move or shake together with the glasses 2 (as a three-dimensional image of the same figure AB at the same position viewed from a different position). Recognized.

Next, the coordinate transformation process when moving the glasses will be described.

T! In figure S2, the coordinates of the object to be expressed: (X, y + Z), the coordinates of the object's projection onto the display screen la: the image to the left eye: (X
L, YL, 0), Image to right eye: (XR, YR, 0), Eye coordinates: Left eye coordinate L: (xLvFLy S) Right eye coordinate R: (
xRyyR* S), between each coordinate, (xL - x)/ (, S z) = (XL - x)
/ (z) ・=■(xR-x)/ (S z)
= (X Rx)/ (z) −■(yL−y)/
(S-z)-(YL-y)/(-2)-■(yR
-y)/(S-z)=(YR-y)/(-z) -
■The following relationship is established.

The coordinate transformation will be explained using the 2000 and 0 formulas as an example.

1] and the position of the object are fixed, and if you want to find the coordinates on the screen, then from equation 0, " (z/ (z-S
)) ・(xL −x)+x −■, so move your mouth by ΔX in the X direction while keeping the distance S from the screen 1a constant.
To reproduce the exact position of an object when you move it,
What is necessary is to increase XL on the screen by (z/(z-3))·ΔX. The XL above is 8 for the left eye image! Regarding the coordinates XR of the image for the right eye, from formula 0, XR = (z/'(z S))・(xR-x)+x
Since it is −■, it is sufficient to increase the amount by the same amount (−2/(2−3))·Δ× as the 8 motion amount of the left eye image position FXt.

Furthermore, regarding the movement in the y direction, from the formulas ■ and ■, YL=(z/(z-3))・(yL-y)
YR=(z/(z-3))・(yl(-y)y−
■ Therefore, if you move your mouth by Δy in the y direction, your eyes will move by Δy in the y direction while keeping the distance S from the screen 1a constant.
Reproduce the n iW of the object as it is when it is moved.
It is only necessary to increase it by /(z-3))·Δy.

The above-mentioned seat F! Conversion can be performed at each point of figure AB; for example, for points A and B, the converted left-eye images AL, BL' and right-eye image AR' shown in FIG.
, BR', etc. are obtained, and thus the same figure AB at the same position is recognized as the image 1 when viewed from a different viewpoint.

The glasses position detection method for detecting the position of the glasses 2 is used to select a menu displayed on a display screen by moving a cursor in a television device of a terminal such as a captain system (character/graphic information network system). One possibility is to use the principle of a remote-controlled position input device. That is, a transmitter on the stereoscopic glasses 2 side that emits a plurality of light beams or ultrasonic waves in a time-divisional manner, and a main body of the glasses position detection device that receives the light beams and outputs an electrical signal according to the intensity thereof. 5 side receiving section,
The electricity (, ?) is a device that connects the position of the transmitter, that is, the arithmetic unit that calculates the position of the glasses.For example, as shown in FIG. 4 light emitting diodes A.

B, C, and D are provided, and these four light emitting diodes A.

When sequentially starting from B, C, and D, 5) emit infrared light in a yI manner,
This infrared light is detected by the optical sensor of the receiving section 5a on the side of the glasses position detection device 5. This optical sensor is, for example, a light emitting diode (jED) A, B as shown in FIG.

Electric signals a corresponding to C and D and corresponding to the incident likelihood intensity,
Output b, c, d. In this case, electric 5 (signal atbt
It is necessary to identify which of the four light-emitting diodes A, B, and CD corresponds to which ctd corresponds, and therefore, it is necessary to synchronize the light-emitting diodes A, B, and C*D with the optical sensor. . There are various ways to achieve this synchronization, but for example, four light emitting diodes A and B.

The order of C and D is determined in advance, and the first light emission time and the electric signal a*bt output from the optical sensor of the receiving section 5a are
By synchronizing the output time of cwd, each electric signal a, b,
There is a method of identifying which light emitting diode A-B-C-D c and d correspond to.

FIG. 6 shows the display screen 1a of the display device 1 using polarized glasses with different left and right polarization angles as the stereoscopic glasses 2.
A synchronous polarization switching type transmitted light panel (indicated by hatching in the figure) 10 is placed over the camera, and under the control of the computer 3, the polarization of the transmitted light panel 10 is alternately switched, so that the image for the left eye and the image for the right eye are divided into left and right eye images. This is a method of viewing the images alternately.

Furthermore, the glasses position detection device 11 in this embodiment is as follows:
It is a light emitting/receiving type, and the glasses position is detected by emitting light from a glasses position detection device 11 and detecting the light reflected by a retroreflective sheet 12 attached to the glasses 2. The coordinate transformation method when the glasses 2 are moved is the same as in the previous embodiment.

To explain the details of the glasses position detecting device 11, this glasses position detecting device 11 has a transmitting/receiving section 11a, and a seventh
As shown in the figure, an optical sensor S is placed in the center of this transmitter/receiver 111a, and four light emitting diodes A, B, C, and D are placed around this optical sensor S. And these light emitting diodes A.

B, C, and D sequentially emit infrared light in a time-sharing manner, and the emitted infrared light is reflected by the retroreflective sheet 12 and illuminates the optical sensor S. In this case, retroreflective sheet 1
When the light sensor 2 receives a strong light from the light emitting diodes A and C out of all the light emitting diodes A, B, C, and D, the light sensor S receives the light from the light emitting diodes A and C. To explain this using FIG. 5 again, the optical sensor S generates large electrical outputs a and Vc when the light from the light emitting diodes A and C is incident on it. .These four electrical outputs a
, b, c, and d are calculated in the calculation unit of the computer, thereby making it possible to calculate where the retroreflective sheet 12 is directed, and determine the position of the glasses 2. Detection is performed.

Note that the means for detecting the position of the glasses is not limited to the above-mentioned embodiments.

Effect of the Invention 1 As explained above, according to the present invention, the position of the tree-viewing glasses with respect to the display screen is detected, and the right-eye image and left-eye image to be displayed are made to correspond to the detected position of the glasses. The image is converted so that it is recognized as a 3D image viewed from the position of the glasses, so even if the viewing position moves, the image will not be distorted (and the object itself will be recognized as being in its original position). This makes it possible to obtain even more realistic 3D images.

[Brief explanation of the drawing]

Figures 1 to fjS7 provide detailed explanations of the present invention.
Pt51 is an explanatory diagram of an image on a screen, Fig. 2 is an explanatory diagram of coordinate transformation, Fig. 3 is an explanatory diagram of a three-dimensional display system adopting the method of the present invention, and Fig. 4 is an explanatory diagram of a glasses position detection means. - This explanatory diagram, Fig. 5 is an explanatory diagram of the electrical output at the time of detection in the glasses position detection device, the fjSG diagram is an explanatory diagram of the three-dimensional display system showing the embodiment of the pond, and Fig. 7 is the transmitting/receiving section in Fig. 6. FIG. 8 is an explanatory diagram of an image on a screen to explain the conventional method. AL-BL...Left eye image, AR, BR...Right eye image, AL'-BL'...Left eye image after conversion, AR
', Blji... Image for right eye after conversion, 1... Display device, 1a... Screen, 2... Stereoscopic glasses, 2L...
・Left eye shutter, 2R...Right eye shutter, 4...
・Floodlight, 5.11...Glasses position detection device, 5a・
... Receiving section, 11a... Transmitting/receiving section, 12... Retroreflective sheet.

Claims (1)

[Claims] A right-eye image and a left-eye image are alternately projected on the screen of a display device, and the right-eye image is viewed with the right eye through stereoscopic glasses having a left-eye shutter and a right-eye shutter that open and close alternately, and the left-eye image is viewed with the right eye. In a three-dimensional image display method for making an image appear three-dimensional by viewing the image with the left eye, the position of the stereoscopic glasses with respect to the display screen is detected, and the right-eye image and the left-eye image to be displayed are separated. A three-dimensional image display method, comprising converting the image so that it is recognized as a three-dimensional image viewed at the detected position of the glasses in accordance with the detected position of the glasses.