JPH01202995A - Stereoscopic television receiver and marker display method therein - Google Patents

Abstract

PURPOSE:To easily move the marker to a measuring position by providing a means moving a left eye marker position and a right eye marker position simultaneously while the horizontal interval of both the markers is made constant and a means adjusting the horizontal interval of the both markers. CONSTITUTION:An output control section 8, a marker generating section 18 comprising two graphic memories 12, 13, a coordinate arithmetic means 17, and an input section 14 are provided. The coordinate arithmetic means 17 has a function as a marker moving means moving the left and right eye marker position on the left and right eye picture corresponding to a stereoscopic marker displayed stereoscopically on a monitor 5 while keeping the horizontal interval of both the markers constant and a function as a marker interval adjusting means adjusting the horizontal interval of both the markers. Then the horizontal interval between both the markers is made constant, that is, the remote/close direction (depth direction) of the markers is fixed, then they are moved to adjust the marker position and the horizontal interval of both the markers is adjusted to adjust the remote/close direction of the marker displayed stereoscopically based on both the markers. Thus, the position of the markers is adjusted in two-dimension.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides an improvement in the display image by displaying an image for the left eye (referred to as a left image) and an image for the right eye (referred to as a right image). The present invention relates to a stereoscopic television device that enables stereoscopic recognition and displays markers at arbitrary points in the displayed image, and a marker display method in the device.

(Prior Art) Conventionally, stereoscopic television devices for obtaining stereoscopic images alternately display right and left images for each field, and in synchronization with each displayed image, the electric shutters of stereo glasses are moved left and right. (time-division system), which alternately opens and closes so that the right eye can see the right image, and the left eye only the left image, creating a three-dimensional display.

FIG. 4 shows the configuration of a conventional stereoscopic television apparatus using this electric shutter. The input composite video signal is
A video signal is generated by the synchronization separation circuit 1.

It is separated into a vertical synchronizing signal V and a horizontal synchronizing signal H.

The video signal R is amplified and outputted by the video amplification circuit 2, and the vertical synchronization signal @V is amplified by the vertical deflection circuit 3, and the horizontal synchronization signal H
are respectively deflected by a horizontal deflection circuit 4, and these video amplification circuits 2. Vertical deflection circuit 3. The output of the horizontal deflection circuit 4 is sent to a display 5, where the right image and left image are displayed alternately. On the other hand, the shutter control circuit 6 uses the vertical synchronization signal V and the horizontal synchronization signal H to manually determine the left and right sides of the field image, and provides a control signal to the eyeglass shutter 7 . This allows the shutter to close the right shutter during the period when the left image is displayed and the left shutter during the period when the right image is displayed using the control signal, so that the right eye can view the right image and the left eye can view the left image. The user can view the image and recognize the displayed image three-dimensionally.

By the way, for example, in medical diagnosis, etc., there is a growing desire to measure the distance between any two points in a stereoscopic display image. Differently, the principle of the above-mentioned 3D image is to make it stand out in a space other than on the display due to the parallax between the right and left eyes.
This simply means that the positions of two arbitrary points cannot be specified.

These problems are not limited to the time-division type, but are similar to other three-dimensional display techniques, such as a lenticular type or a type using colored glasses.

Therefore, in order to specify any two points in the stereoscopic display image, the applicant first set up a total of four bright points, one on the right image and one on the left image, corresponding to one point in the stereoscopic display image. a bright spot generating unit that generates a point; a coordinate calculation unit that derives the coordinates of the two points in a three-dimensional space including the subject from the generation position of the bright spot and known geometric parameters; We would like to propose a three-dimensional television having a distance calculation unit that calculates the distance between two points based on the coordinates (Japanese Patent Application No. 61-205911).

(Problem to be solved by the invention) However, when generating a total of four markers (bright spots), one point each on the left image and the right image, corresponding to any one point in the stereoscopic display image, .

New features include the need to specify markers individually and three-dimensionally for each image on the right, and the need to match the measurement position on the three-dimensional display image with the marker position, which requires time and complicates operations. This has led to serious problems.

For example, in the X-ray system shown in FIG. 5(a), when X-rays are emitted from the focal points XL and XR of the stereo X-ray tube 21, the measurement positions A in the subject S are 1 and I (image intensifier). Above Ra.

Since the distance is X as shown in 1-a, in order to display the three-dimensional marker A' corresponding to this measurement position A on the stereoscopic image, the same figure ( Shown in a)
gRa, [Ra' corresponding to a.

la' needs to be displayed, and in the case of time-division stereoscopic viewing, 1-a' is displayed in the first field as shown in Figure 6.
Ra' must be individually specified in the second field.

SUMMARY OF THE INVENTION Therefore, the present invention aims to eliminate the above-mentioned drawbacks, and aims to provide a three-dimensional television device that can easily move a marker to a measurement position, and a cursor display method for the device.

[Structure of the Invention] (Means for Solving the Problems) The structure of the present invention for achieving the above object enables three-dimensional recognition of the displayed image by displaying the left eye image and the right eye image on a monitor. In a stereoscopic television device that displays a marker stereoscopically corresponding to an arbitrary point in the stereoscopic display image, the position of the left eye marker on the left eye image and the right eye image corresponding to the stereoscopically displayed marker. and a marker moving means for simultaneously moving the right eye marker position with a constant horizontal interval between both markers, and a marker interval adjusting means for adjusting the horizontal interval between the two markers to expand or contract. In addition, the method for displaying the pull marker on the device is to display the left eye image and the right eye image on a monitor to make the displayed image three-dimensional, and to display the left eye image on the left eye image or the right eye image. Either the marker or the right eye marker is displayed on the monitor along with the display image, and the one marker and an arbitrary point in the display image are aligned on the line of sight, and then the marker to be used is set to the one marker. It is displayed on the monitor on a horizontal line, and the interval between both markers is adjusted to expand or contract on the horizontal line.

(Function) The function of the present invention having the above configuration is to change the left eye marker position and the right eye marker position on the left eye image and the right eye image.
Both markers are moved simultaneously with a constant horizontal interval. That is, the marker is moved while the perspective direction (depth direction) when displayed on the monitor is fixed. After adjusting the marker position two-dimensionally in this manner, the horizontal interval between the two markers is adjusted to extend or contract, and the distance direction of the marker displayed three-dimensionally is adjusted based on these two markers. Therefore, each position adjustment of the marker can be performed two-dimensionally, so that the measurement position of the stereoscopic display image can be specified easily and quickly. Further, as a display method of the marker, either one of the left eye marker or the right eye marker on the left eye image or the right eye image is displayed on a monitor together with the display image, and this one marker and the above display Align an arbitrary point in the image with the line of sight. after that,
The other marker is displayed on the horizontal line of the one marker, and the interval between both markers is adjusted to expand or contract on the horizontal line. In this case, each display position adjustment of the marker can be performed visually and two-dimensionally, so that the 51 measured positions on the stereoscopic display image can be specified easily and quickly.

(Example) Hereinafter, the present invention will be specifically explained with reference to Examples.

FIG. 1(a) is a block diagram of an apparatus according to an embodiment of the present invention. In this figure, parts having the same functions as those shown in FIG. 4 are given the same reference numerals, and detailed explanation thereof will be omitted.

The device of this embodiment differs from the conventional device (FIG. 4) in that the output control section 8, the first . Second graphics memory 12.13
It has a marker generation section 18, a coordinate calculation means 17, and an input section 14.

The input unit 14 is used to input measurement system conditions, measurement positions, etc. by an operator's operation. For example, when stereoscopically viewing an image obtained by the X-ray system shown in FIG. .

■Distance from 1. Focal distance d, 1. Each coordinate of I and CRT
A condition input means 16 for inputting parameters such as the relationship between pixels on the display (hereinafter also referred to as monitor) 5, and inputting the amount of movement of the right eye and left eye markers superimposed on the monitor 5, The marker operation section 15 that adjusts the expansion and contraction of the interval between both markers is on the right side. The outputs of the marker operation section 15 and the condition input means 16 are taken into the coordinate calculation means 17 arranged at a subsequent stage.

The details of the marker operation section 15 include six keys 15a to 15e, as shown in FIG. 2(b).

Among these, the keys 15a are for the right eye displayed on the monitor 5;
Key 15b sets the amount of movement of the left eye marker upward on the monitor; key 15b sets the amount of movement downward; key 15c similarly sets the amount of movement to the left; key 15d key 15e is used to set the movement m in the right direction, and the key 15e is used to set the marker specified by the stone eye and left eye markers and displayed three-dimensionally (hereinafter referred to as the three-dimensional marker) in front of the monitor in the depth direction. This sets the amount of movement to the side.

The key 15f is used to set the amount of movement in the opposite direction. Here, each movement amount is set in proportion to the pressing time of any key.

Note that this marker operation section is not limited to the above-described configuration, and may be replaced with a joystick, a trackball, etc., for example.

The coordinate calculation means 17 calculates the left-eye marker position and right-eye marker position on the left-eye image and right-eye image corresponding to the stereoscopic marker displayed three-dimensionally on the monitor 5, and the horizontal interval between the two markers. It has a function as a marker moving means to move the markers simultaneously at a constant rate, and a function as a marker interval adjusting means to expand and contract the horizontal interval between both markers, and is realized mainly by, for example, a CPU (central processing unit). .

Furthermore, the amount of movement of the marker is determined by the marker operation section 15 described above.
specified by. The coordinate conversion outputs are sent to the first and second graphic memories 12 and 13 arranged at the subsequent stage as left eye marker movement information and left eye marker movement information, respectively.

The first. The second graphic memory 12.13 stores left-eye marker movement information and right-eye marker movement information from the coordinate calculation means 17, respectively, and uses the horizontal synchronization signal H2 and the vertical synchronization signal V to transmit the video signal @D1. The left eye marker position information DL and the right eye marker position information DR are output in synchronization with the cycle.

Further, the output control section 8 is disposed between the synchronization separation circuit 1 and the video amplification circuit 2, and outputs the video signal D1 and the left eye marker position information D based on the horizontal synchronization signal T1 and the vertical synchronization signal V.
L, for controlling the transmission of the right eye marker position information DR, and the marker signal DL.

If DR is captured, send this marker signal $D.

The DR is output before the video signal D1. The output of this output control section 8 is assumed to be D2.

Note that the output D2 of the output control section 8 is sent to the monitor 5 via the video amplification circuit 2 arranged at a subsequent stage. This monitor 5 has a left eye marker and a left image.

The right eye marker and right image are displayed simultaneously.

Next, the operation of the above configuration will be explained.

In this embodiment, in order to specify the "cutting point 1" for performing distance measurement in a stereoscopic display image, the first . The right eye and left eye marker information in the second graphic memory 12.13 is superimposed on the video signal and displayed on the monitor.

The operator first presses the keys 15a to 15d of the marker operation unit 15 as appropriate to select the right eye marker Ra displayed on the monitor 5 shown in FIG. 1(C) via the eyeglass shutter 7.
' and the left eye marker la' are simultaneously moved to coincide with the measurement point H in the stereoscopic display image S. In this case, the perspective adjustment in the monitor depth direction is fixed.

Once the three-dimensional marker A' is aligned with the arbitrary measurement point To1 in this way, the perspective adjustment of the three-dimensional marker A' in the depth direction of the monitor 5 is performed at the coordinate position. This is the key 15e of the marker operation section 15.

This is done by pressing 15f. That is, this key 15
Pressing information on keys e and 15f is obtained from the coordinate operation means 17° 1st. Second
output control unit 8 via the graphics memory 12.13 of
and both markers 1a'.

The horizontal spacing of Ra' is adjusted and displayed on the monitor 5.

Such markers la' and Ra' are set as measurement point 1.
] may be made as follows.

First, an image for the left eye and an image for the right eye are displayed on a monitor to make the displayed image three-dimensional.

First, the left eye marker La′ on the left eye image or the right eye image
or the right eye marker Ra / is displayed on the monitor together with the display image S. At this time, for example, if the right eye marker Ra' is to be displayed on the monitor first, the glasses shutter 7 should be set so that only the right eye can be seen.

Then, this right eye marker Ra' and the measurement point To1 are aligned on the line of sight of the right eye, that is, on a straight line.

Next, the eyeglass shutter 7 is set so that only the left eye can see. After doing so, the left eye marker L a / is displayed in the horizontal direction of the right eye marker Ra'.

Then, by adjusting the movement of the left eye marker L a / in the horizontal direction, the left eye marker La' and the right eye marker Ra
Adjust the distance between / to expand or contract. This corresponds to adjusting the perspective of the three-dimensional marker A' on the monitor 5 in the depth direction. In this case, adjustments can be made visually in a two-dimensional state. Since each movement of the marker 8' is performed two-dimensionally in this way, it is possible to easily and quickly move the marker 8' to the measurement point 1.

Next, two points A within the subject using the actual flow-side device.

The case of finding the distance between 8 will be explained.

Here, as shown in FIG. 2, two points A and B within the subject S are 1. la, Ra, lb on I.

The image will be transferred to each point of Rb.

In a time-division stereoscopic television apparatus, the points Ra and Rb are placed in the second field as the right image.
-a, , 1-b will be projected in the first field as the left image.

Therefore, 1. Bright spots on one scanning line on the first and second fields shown in FIG.

If Rb' is displayed in a superimposed manner on the monitor, the bright spots 1a' and Ra' will make point A, and the bright spots Lb' and Rb'
Accordingly, each point B can be set as a three-dimensional marker that is a three-dimensional bright spot at S in the three-dimensional display image.

As described above, in this embodiment, two bright spots observed in a stereoscopic display image are used as markers for distance measurement.

Next, in order to measure the distance between points A and B, coordinate calculation means 17
Then, the two points A and B in the three-dimensional space including the subject S
I am looking for the coordinates of In this coordinate representation 1i, the bright spots (markers) La, Ra, Lb.

It can be calculated from the Lb occurrence position information and the known geometric parameters input by the condition input means 16.

For convenience of explanation, we will assume that points A and B in Fig. 2 have the same Z coordinate, and that only the X and Y coordinates are different.As an example, we will explain the procedure for finding the X coordinate x 1 of point A. do. From the generation position information of bright spot 1-a, Ra, la, Ra =
m is found. On the other hand, as geometric parameters, stereo X-ray tube 21 and 1. Distance from I, so-called S I D
(Source Image Distance) is generally constant in the X-ray system. Then, from the relationship d 12 - Xl, the X coordinate of point A is determined as Xi =□・1 m+d.

Hereinafter, the Y coordinate of point A and the X and Y coordinates of fish B can be calculated in the same manner. Note that even if points A and B are not on the same plane, each coordinate can be used as a cylinder using the same procedure. The coordinates to the point obtained in this way are (
Xl , Sh , Zl ), and the coordinates of point B are (X2
, V2, Z2).

Next, the distance between points A and B is determined, but this distance calculation is easy if the coordinates of points A and B are obtained from the coordinate calculation means 17. That is, (Xl-X2) "" (Vl-V2) "÷
(Zl −12) From 2, the actual distance between points A and B can be calculated.

It should be noted that the invention described above is not limited to the above embodiments, and various modifications can be made within the scope of the gist of each invention.

The invention relating to the stereoscopic television apparatus is limited to a time-sharing type stereoscopic television apparatus that displays the stone statue and the left image in a time-divided manner as in the above-mentioned embodiments, and views them stereoscopically using optical shutters that are alternately opened and closed. For example, a lenticular system in which a polarizing lens is placed on a monitor for stereoscopic viewing, or a system in which images of different colors are displayed as a stone image or left image, and this is viewed stereoscopically through a color filter. The same can be applied to Furthermore, the measurement points can be applied not only between two points but also between three or more points.

The invention relating to the marker display method in the stereoscopic television apparatus is limited to the above-described embodiment. For example, after aligning one marker and the arbitrary point 1 on the same line of sight,
When adjusting the distance between the other marker and one marker in the horizontal direction, the adjustment in the perspective direction may be performed after the glasses shutter is brought into a three-dimensional state. In this case as well, the same effects as described above can be obtained.

Effects of the Invention] As described in detail above, according to the stereoscopic television apparatus of the present invention, it is possible to provide a stereoscopic television apparatus in which a marker can be easily moved to a measurement position. Furthermore, according to the marker display method in the apparatus, in addition to the above-mentioned effects, the marker can be visually adjusted in a two-dimensional state, so that it can be easily moved to the measurement position.

[Brief explanation of the drawing]

FIG. 1 (a> is a block diagram of an apparatus according to the present invention-embodiment;
Figure (b) is a detailed view of the marker operation section, Figure 1 (C) is an explanatory diagram showing the moving state of the marker, Figures 2 and 3 (a>,
(b) is an explanatory diagram when calculating the distance between two points within the subject,
FIG. 4 is a block diagram of a conventional device, and FIGS. 5 and 6 are explanatory diagrams of measurement position designation. 5... Monitor (CRT display), 15... Marker operation unit, 17... Marker moving means. Marker interval adjustment means (coordinate calculation means). agent patent attorney rules near point can circumference
Takeshi Kondo (G) Figure 1 (b) ■ (C) Figure 1 Figure 2 (0) (b) Figure 3 Figure 4 Calculation Z7/-le)° Go 1 file) 1\ / 6th figure

Claims (2)

[Claims] (1) In a stereoscopic television device that enables stereoscopic recognition of a displayed image by displaying an image for the left eye and an image for the right eye on a monitor, and displays a marker corresponding to an arbitrary point in the stereoscopic display image. , a marker moving means for simultaneously moving a left eye marker position and a right eye marker position on the left eye image and right eye image corresponding to the stereoscopically displayed marker while maintaining a constant horizontal interval between both markers; , and marker interval adjustment means for expanding and contracting the horizontal interval between the two markers. (2) The left eye image and the right eye image are displayed on a monitor to make the displayed image three-dimensional, and either the left eye marker or the right eye marker on the left eye image or the right eye image is displayed as described above. The image is displayed on the monitor, and one marker and an arbitrary point in the displayed image are aligned on the line of sight.Then, the other marker is displayed on the monitor on the horizontal line of the one marker, and both markers are aligned on the horizontal line. A method for displaying markers in a three-dimensional television device, characterized by adjusting the interval.