JP2012099927A - Stereoscopic image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a display in common as a display of a stereoscopic image and a display of a normal image, in a stereoscopic image display device for displaying the stereoscopic image using two images of a right-eye image and a left-eye image.SOLUTION: A stereoscopic image display device is provided with: a right-eye image display part 40 which displays a right-eye image; a left-eye image display part 41 which is arranged side by side with the right-eye image display part 40 and displays a left-eye image; and a half mirror 42 which displays a stereoscopic image by optically composing the right-eye image and the left-eye image. In order that the half mirror 42 is movable from the middle position between the display surface 40a of the right-eye image display part 40 and the display surface 41a of the left-eye image display part 41 to the vicinity of the display surface 40a and/or the display surface 41a, the half mirror 42 is rotatably mounted with a hinge 43 near the middle between the vicinity of the display surface 40a and the display surface 41a.

Description

  The present invention relates to a stereoscopic image display device that displays a stereoscopic image using two images, a right-eye image and a left-eye image.

  Conventionally, it is known that stereoscopic viewing using parallax is possible by combining and displaying two images, a right-eye image and a left-eye image. Such a stereoscopically viewable image (hereinafter referred to as a stereoscopic image or a stereo image) is generated based on a plurality of images having parallax obtained by photographing the same subject from different positions.

  Such generation of stereoscopic images is used not only in the fields of digital cameras and televisions but also in the field of radiographic imaging. That is, the subject is irradiated with radiation from different directions, the radiation transmitted through the subject is detected by the radiation image detector, and a plurality of radiation images having parallax are obtained, and based on these radiation images A stereoscopic image is generated. And by generating a stereoscopic image in this way, a radiographic image with a sense of depth can be observed, and a radiographic image more suitable for diagnosis can be observed. (For example, see Patent Document 1)

JP 2010-110571 A JP 2003-005130 A JP 05-285129 A

By the way, as a stereoscopic image display device for displaying a stereoscopic image as described above, it is provided with two display screens arranged side by side and a half mirror, and displays a right eye image and a left eye image on each display screen. There has been proposed a monitor that displays a stereoscopic image by optically synthesizing a right-eye image and a left-eye image with a half mirror. (For example, see Patent Documents 2 and 3)
Since the display screen in the stereoscopic image display apparatus of such a system can be the same as that for displaying a normal image, the display of the stereoscopic image and the display of the normal image can be combined. However, in this case, there is a problem that the half mirror interferes with display during normal image display.

  In view of the above circumstances, the present invention aims to provide a stereoscopic image display device that displays a stereoscopic image using two images, a right-eye image and a left-eye image, in which the above-described problems are solved. And

  A stereoscopic image display device according to the present invention is a stereoscopic image display device capable of displaying both a stereoscopic image and a normal image using two images of a right-eye image and a left-eye image. The right-eye image display means for displaying the normal image and the right-eye image display means are arranged side by side, and the left-eye image display means for displaying the left-eye image and the normal image, and the right-eye image and the left-eye image are stereoscopically viewed. A half mirror that is optically combined so that it can be viewed as an image, and the half mirror is in the vicinity of the display surface of the right-eye image display means from an intermediate position between the display surface of the right-eye image display means and the display surface of the left-eye image display means And / or one end of the half mirror is rotatably held in the vicinity of the vicinity of the right-eye image display means and the left-eye image display means so as to be movable to the vicinity of the display surface of the left-eye image display means. And it is characterized in and.

  The stereoscopic image display apparatus of the present invention may be provided with only one half mirror, or may be provided with two half mirrors, and the half mirror for the right eye image display means may include a display surface of the right eye image display means. The half mirror for the left-eye image display means and the display surface of the right-eye image display means are held so as to be movable from an intermediate position with respect to the display surface of the left-eye image display means to the vicinity of the display surface of the right-eye image display means. It may be held so as to be movable from an intermediate position with respect to the display surface of the left-eye image display means to the vicinity of the display surface of the left-eye image display means.

  Further, half mirror position detecting means for detecting that the half mirror is in the vicinity of the display surface of the right-eye image display means and / or the display surface of the left-eye image display means, and the half mirror is the display surface of the right-eye image display means It is preferable to include display control means for increasing the display brightness of the image in the image display means having a half mirror near the display surface when in the vicinity and / or in the vicinity of the display surface of the left-eye image display means.

  According to the stereoscopic image display device of the present invention, in the stereoscopic image display device capable of displaying both a stereoscopic image and a normal image using two images of a right eye image and a left eye image, The right-eye image display means for displaying the normal image and the right-eye image display means are arranged side by side, and the left-eye image display means for displaying the left-eye image and the normal image, and the right-eye image and the left-eye image are stereoscopically viewed. A half mirror that is optically combined so that it can be viewed as an image, and the half mirror is in the vicinity of the display surface of the right-eye image display means from an intermediate position between the display surface of the right-eye image display means and the display surface of the left-eye image display means And / or one end of the half mirror is rotatably held in the vicinity of the vicinity of the right-eye image display means and the left-eye image display means so that it can move to the vicinity of the display surface of the left-eye image display means. As a result, when the half mirror is moved to the vicinity of the display surface of the right-eye image display means and / or to the vicinity of the display surface of the left-eye image display means, the right-eye image and the left-eye image are optically combined. Instead, only the image displayed on the image display means close to the half mirror is transparently displayed, so that the stereoscopic image display and the normal image display can be combined.

  If only one half mirror is provided, the image displayed on the image display means close to the half mirror during normal image display is observed through the half mirror. It is displayed darker than the image displayed on the image display means. Therefore, two half mirrors are provided, and the half mirror for the right-eye image display means is in the vicinity of the display surface of the right-eye image display means from an intermediate position between the display face of the right-eye image display means and the display face of the left-eye image display means. The half mirror for the left-eye image display means is in the vicinity of the display surface of the left-eye image display means from an intermediate position between the display face of the right-eye image display means and the display face of the left-eye image display means. If the image is held so as to be movable, the state of the appearance of the images displayed on both the image display means during normal image display can be made substantially equal.

  Further, half mirror position detecting means for detecting that the half mirror is in the vicinity of the display surface of the right-eye image display means and / or the display surface of the left-eye image display means, and the half mirror is the display surface of the right-eye image display means If it is provided with a display control means for increasing the display brightness of the image in the image display means having a half mirror in the vicinity of the display surface when in the vicinity and / or in the vicinity of the display surface of the left-eye image display means, the half mirror It is possible to display an easy-to-see image that compensates for the decrease in luminance caused by

1 is a schematic configuration diagram of a breast stereoscopic image photographing display system using a stereoscopic image display apparatus according to a first embodiment of the present invention. The figure which looked at the arm part of the stereoscopic vision image photographing display system for breasts shown in FIG. 1 from the right direction of FIG. 1 is a block diagram showing a schematic configuration inside a computer of the breast stereoscopic image capturing and displaying system shown in FIG. Perspective view of the stereoscopic image display device The top view which shows the state at the time of the stereoscopic image display of the said stereoscopic vision image display apparatus The top view which shows the state at the time of the normal image display of the said stereoscopic vision image display apparatus The top view which shows the state at the time of the stereoscopic image display of the stereoscopic image display apparatus of the 2nd Embodiment of this invention. The top view which shows the state at the time of the normal image display of the stereoscopic vision image display apparatus of the 2nd Embodiment of this invention.

  Hereinafter, a breast stereoscopic image photographing and display system using the stereoscopic image display apparatus according to the first embodiment of the present invention will be described with reference to the drawings. First, a schematic configuration of the whole breast stereoscopic image photographing / displaying system according to the present embodiment will be described. FIG. 1 is a schematic configuration diagram of a breast stereoscopic image photographing / displaying system using the stereoscopic image displaying apparatus of the present embodiment, and FIG. 2 is a diagram illustrating an arm unit of the breast stereoscopic image photographing / displaying system shown in FIG. FIG. 3 is a block diagram showing a schematic configuration inside a computer of the breast stereoscopic image capturing and displaying system shown in FIG. 1, FIG. 4 is a perspective view of the stereoscopic image display device, and FIG. FIG. 6 is a top view showing a state of the stereoscopic image display device when displaying a stereoscopic image, and FIG. 6 is a top view showing a state of the stereoscopic image display device when displaying a normal image.

  As shown in FIG. 1, a breast stereoscopic imaging and displaying system 1 according to this embodiment includes a breast imaging device 10, a computer 8 connected to the breast imaging device 10, and a monitor 9 connected to the computer 8. (Stereoscopic image display device) and an input unit 7 are provided.

  As shown in FIG. 1, the mammography apparatus 10 includes a base 11, a rotary shaft 12 that can move in the vertical direction (Z direction) with respect to the base 11, and can rotate. The arm part 13 connected with the base 11 is provided. FIG. 2 shows the arm 13 viewed from the right direction in FIG.

  The arm portion 13 has an alphabet C shape, and a radiation table 16 is attached to one end of the arm portion 13 so as to face the imaging table 14 at the other end. The rotation and vertical movement of the arm unit 13 are controlled by an arm controller 31 incorporated in the base 11.

  A radiographic image detector 15 such as a flat panel detector and a detector controller 33 that controls reading of a charge signal from the radiographic image detector 15 are provided inside the imaging table 14. Further, inside the imaging table 14, a charge amplifier that converts the charge signal read from the radiation image detector 15 into a voltage signal, a correlated double sampling circuit that samples the voltage signal output from the charge amplifier, A circuit board provided with an AD conversion unit for converting a voltage signal into a digital signal is also installed.

  In addition, the photographing table 14 is configured to be rotatable with respect to the arm unit 13, and even when the arm unit 13 rotates with respect to the base 11, the direction of the photographing table 14 is fixed to the base 11. can do.

  The radiation image detector 15 can repeatedly perform recording and reading of a radiation image, and may use a so-called direct type radiation image detector that directly receives radiation and generates charges. Alternatively, a so-called indirect radiation image detector that converts radiation once into visible light and converts the visible light into a charge signal may be used. As a radiation image signal reading method, a radiation image signal is read by turning on / off a TFT (thin film transistor) switch, or by irradiating reading light. It is desirable to use a so-called optical readout system from which a radiation image signal is read out, but the present invention is not limited to this, and other systems may be used.

  A radiation source 17 and a radiation source controller 32 are housed in the radiation irradiation unit 16. The radiation source controller 32 controls the timing of irradiating radiation from the radiation source 17 and the radiation generation conditions (tube current, tube voltage, time, etc.) in the radiation source 17.

  Further, in the central portion of the arm portion 13, a compression plate 18 that is disposed above the imaging table 14 and presses and compresses the breast M, a support portion 20 that supports the compression plate 18, and a support portion 20 that extends in the vertical direction. A moving mechanism 19 for moving in the (Z direction) is provided. The position of the compression plate 18 and the compression pressure are controlled by the compression plate controller 34.

  The computer 8 includes a central processing unit (CPU), a storage device such as a semiconductor memory, a hard disk, and an SSD. The control unit 8a, the data storage unit 8b, and the image processing unit shown in FIG. Part 8c is configured.

  The controller 8a outputs predetermined control signals to the various controllers 31 to 34 to control the entire system. A specific control method will be described in detail later. The data storage unit 8b stores radiation image data and the like for each imaging angle acquired by the radiation image detector 15. The image processing unit 8c is for performing various image processing.

  The input unit 7 is configured by a pointing device such as a keyboard and a mouse, for example, and is used for receiving input of a movement operation of a three-dimensional cursor, shooting conditions, an operation instruction, and the like.

  The monitor 9 is capable of displaying both a stereoscopic image and a normal image using two images of a right eye image and a left eye image. As shown in FIG. 4, the right eye image and the normal image are displayed. A right-eye image display unit 40 to display, a left-eye image display unit 41 to display a left-eye image and a normal image, and a half mirror that optically combines the right-eye image and the left-eye image so as to be seen as a stereoscopic image. 42 (shown by a dotted line in the figure) is rotatably connected by a hinge 43, and has a structure in which a stand 44 is attached to the image display unit 41 for the left eye. In addition, a sensor (not shown) that detects that the half mirror 42 is in the vicinity of the display surface 40 a of the right-eye image display unit 40 or the display surface 41 a of the left-eye image display unit 41 is provided in the hinge 43. . In the right-eye image display unit 40 and the left-eye image display unit 41, a display (not shown) that increases the display brightness of the image when the sensor detects that the half mirror 42 is in the vicinity of the display surface. Control means are provided.

  The display light in the right-eye image display unit 40 and the left-eye image display unit 41 is configured to be polarized light orthogonal to each other. The user wears polarizing glasses having a right-eye polarizing lens for observing the right-eye image and a left-eye polarizing lens for observing the left-eye image, and observes the left-eye image and the right-eye image with the left and right eyes, respectively. Visual images can be observed.

  When displaying a stereoscopic image on the monitor 9, as shown in FIG. 5, the angle formed by the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41 is less than 180 °. The right-eye image display unit 40 is moved so that the half-eye mirror 42 is moved, and the half mirror 42 is moved so as to be positioned between the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41. .

  The angle formed between the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41 during stereoscopic image display is not particularly limited as long as it is less than 180 °. The angle is preferably about 120 °, and most preferably 90 °.

  Further, the movement of the right-eye image display unit 40 and the half mirror 42 may be manually performed by the user, or an input unit such as a switch for receiving a stereoscopic image display instruction input is provided. Or a radiographic image signal input to the monitor 9 or when it is detected that a signal for a stereoscopic image is input based on incidental information of the radiographic image signal or the like. Alternatively, it may be moved automatically.

  The stereoscopic image displayed on the monitor 9 can be observed from either the right side or the left side in FIG. 5, but here, the mechanism of the stereoscopic image display will be described as observing from the right side. As shown in FIG. 5, when a stereoscopic image is observed from the right side of the monitor 9, the right-eye image displayed on the display surface 40 a of the right-eye image display unit 40 is reflected by the half mirror 42, and the left-eye image display unit The left-eye image displayed on the display surface 41a of 41 passes through the half mirror 42, and as a result, the right-eye image and the left-eye image are optically combined and displayed as a stereoscopic image. Note that, when a stereoscopic image is observed from the left side of the monitor 9, only the reflected image and the transmitted image are reversed, and a stereoscopic image similar to the case of observing the stereoscopic image from the right side is displayed.

  When displaying a normal image on the monitor 9, as shown in FIG. 6, the half mirror 42 is moved to the vicinity of the display surface 40 a of the right-eye image display unit 40 (or the vicinity of the display surface 41 a of the left-eye image display unit 41). Move. In addition, there is no restriction | limiting in particular in the angle which the display surface 40a of the image display part 40 for right eyes and the display surface 41a of the image display part 41 for left eyes at this time make.

  The normal image includes not only a two-dimensional image other than the right-eye image and the left-eye image but also a case where the right-eye image and the left-eye image are individually observed as a two-dimensional image instead of a stereoscopic image.

  Further, when a sensor (not shown) in the hinge 43 detects that the half mirror 42 is in the vicinity of the display surface 40a of the right-eye image display unit 40, a display control unit (not shown) in the right-eye image display unit 40. Thus, processing for increasing the display brightness of the image displayed on the display surface 40a is performed.

  Basically, when the light passes through the half mirror 42, the luminance is approximately halved. Therefore, if the display luminance is increased by about twice, the luminance can be the same as that when the half mirror 42 is not transmitted, but this value is limited. Instead, any mode may be used.

  The half mirror 42 may be moved manually by the user, or provided with an input unit such as a switch for receiving an instruction input for normal image display, and automatically moved based on the instruction from the input unit. Alternatively, it may be automatically moved when it is detected that a normal image signal has been input based on the radiation image signal input to the monitor 9 or incidental information of the radiation image signal. May be.

  Next, the operation of the breast stereoscopic image capturing and displaying system according to the present embodiment will be described.

  First, the operation at the time of shooting will be described.

  First, the breast M is set on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18.

  Next, after various imaging conditions including a combination of an angle formed by two different imaging directions (hereinafter referred to as a convergence angle θ) and an imaging angle θ ′ constituting the convergence angle θ are input in the input unit 7, An instruction to start shooting is input.

  Then, when there is an instruction to start photographing at the input unit 7, a stereoscopic image of the breast M is photographed. Specifically, first, the control unit 8 a outputs information about the convergence angle θ and the imaging angle θ ′ constituting the convergence angle θ to the arm controller 31. In the present embodiment, θ = 4 ° is set as information on the convergence angle θ at this time, and a combination of θ ′ = ± 2 ° is set as a combination of the imaging angles θ ′ constituting the convergence angle θ. However, the present invention is not limited to this, and the photographer can set an arbitrary convergence angle θ at the input unit 7.

  The arm controller 31 receives the information of the imaging angle θ ′ output from the control unit 8a, and the arm controller 31 first uses the arm to capture a radiographic image for the right eye based on the information of the imaging angle θ ′. The controller 13 outputs a control signal with an imaging angle θ ′ that is inclined + 2 ° with respect to a direction perpendicular to the detection surface 15a.

  In response to the control signal output from the arm controller 31, the arm unit 13 rotates to a position of + 2 °. Subsequently, the control unit 8a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and readout of the radiation image signal. In accordance with this control signal, radiation is emitted from the radiation source 17, and a radiation image obtained by photographing the breast M from the direction where the imaging angle θ ′ is + 2 ° is detected by the radiation detector 15, and the radiation image signal is detected by the detector controller 33. Is read and stored in the data storage unit 8b of the computer 8.

  Subsequently, in order to capture a radiographic image for the left eye, a control signal that outputs an imaging angle θ ′ in which the arm unit 13 is inclined by −2 ° with respect to a direction perpendicular to the detection surface 15a is output.

  In response to the control signal output from the arm controller 31, the arm unit 13 rotates to a position of -2 °. Subsequently, the control unit 8a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and readout of the radiation image signal. In accordance with this control signal, radiation is emitted from the radiation source 17, and a radiation image obtained by photographing the breast M from the direction where the imaging angle θ ′ is −2 ° is detected by the radiation detector 15, and the radiation image is detected by the detector controller 33. The signal is read out and stored in the data storage unit 8b of the computer 8.

  Next, an operation for displaying a stereoscopic image will be described.

  First, after two radiographic image signals of a right eye radiographic image and a left eye radiographic image stored in the data storage unit 8b of the computer 8 are read from the data storage unit 8b, the right eye image display unit 40 of the monitor 9 Each image is displayed on the display surface 40a and the display surface 41a of the left-eye image display unit 41.

  In this state, as shown in FIG. 5, the right-eye image display unit 40 is set so that the angle formed between the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41 is less than 180 °. If the half mirror 42 is moved so as to be positioned between the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41, the stereoscopic image can be observed. Can do.

  As shown in FIG. 6, if the half mirror 42 is moved to the vicinity of the display surface 40a of the right-eye image display unit 40 (or the vicinity of the display surface 41a of the left-eye image display unit 41), the right-eye image and the left-eye image are displayed. The image can be observed as a two-dimensional image (normal image) individually rather than as a stereoscopic image.

  During normal image display, images other than the right-eye image and the left-eye image may be displayed.

  Next, a stereoscopic image display device according to a second embodiment of the present invention will be described. FIG. 7 is a top view showing a state when displaying a stereoscopic image of the stereoscopic image display apparatus of the present embodiment, and FIG. 8 is a top view showing a state of displaying a stereoscopic image of the stereoscopic image display apparatus of the present embodiment. It is. In FIGS. 7 and 8, the same elements as those in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted unless particularly required.

  The monitor 9 ′ of the present embodiment is different from the first embodiment in that two half mirrors, a half mirror 45 for the right eye image display unit and a half mirror 46 for the left eye image display unit, are provided. It is different in comparison.

  When the stereoscopic image is displayed on the monitor 9 ′, as shown in FIG. 7, the angle formed by the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41 is 180 °. The right-eye image display unit 40 is moved so as to be less than the range, and the half mirrors 45 and 46 are positioned between the display surface 40a of the right-eye image display unit 40 and the display surface 41a of the left-eye image display unit 41. Move to.

  Further, when displaying a normal image, as shown in FIG. 8, the half mirror 45 is near the display surface 40a of the right-eye image display unit 40, and the half mirror 46 is near the display surface 41a of the left-eye image display unit 41. Move.

  By setting it as such an aspect, since the state of the image display at the time of a normal image display can be made the same on either side, it can be set as a monitor with little discomfort for a user.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to the said embodiment.

  For example, with regard to the arrangement of the right-eye image display unit 40 and the left-eye image display unit 41, the right-eye image display unit 40 is arranged on the right side and the left-eye image display unit 41 is arranged on the left side in the above embodiment. Even when the right-eye image display unit 40 is arranged on the left side and the left-eye image display unit 41 is arranged on the right side, a stereoscopic image can be displayed in exactly the same manner.

  In addition, although the example in which the right-eye image display unit 40 and the left-eye image display unit 41 are arranged side by side has been illustrated as being arranged in the left-right direction, any mode may be employed, such as a vertical direction.

  In addition, as an embodiment of the stereoscopic image display device of the present invention, an example of combination with a stereoscopic image capturing / displaying system for breasts has been shown, but the present invention is limited to a stereoscopic image capturing / displaying system for breasts. Rather, it can be combined with any system.

  In addition to the above, it goes without saying that various improvements and modifications may be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Breast stereoscopic image imaging display system 7 Input part 8 Computer 8a Control part 8b Data storage part 8c Image processing part 9 Monitor 10 Breast imaging apparatus 11 Base 12 Rotating shaft 13 Arm part 14 Imaging stand 15 Radiation image detector 16 Radiation irradiation unit 17 Radiation source 18 Compression plate 31 Arm controller 32 Radiation source controller 33 Detector controller 34 Compression plate controller 40 Right-eye image display unit 41 Left-eye image display unit 42 Half mirror 43 Hinge 44 Stand 45 Half mirror 46 Half mirror

Claims (3)

A stereoscopic image display device capable of displaying both a stereoscopic image and a normal image using two images of a right-eye image and a left-eye image,
Right-eye image display means for displaying the right-eye image and the normal image;
Left-eye image display means arranged side by side with the right-eye image display means and displaying the left-eye image and the normal image;
A half mirror that optically synthesizes the right-eye image and the left-eye image so as to appear as a stereoscopic image;
The half mirror is located in the vicinity of the display surface of the right-eye image display means and / or the display surface of the left-eye image display means from an intermediate position between the display surface of the right-eye image display means and the display surface of the left-eye image display means. A stereoscopic image display device characterized in that one end of the half mirror is rotatably held in the vicinity of a proximity portion between the right-eye image display means and the left-eye image display means so as to be movable to the vicinity. . Two half mirrors are provided,
The half mirror for the right-eye image display means can be moved from an intermediate position between the display surface of the right-eye image display means and the display surface of the left-eye image display means to the vicinity of the display surface of the right-eye image display means. Held in
The half mirror for the left-eye image display means can move from an intermediate position between the display surface of the right-eye image display means and the display surface of the left-eye image display means to the vicinity of the display surface of the left-eye image display means. The stereoscopic image display device according to claim 1, wherein the stereoscopic image display device is held in a frame. Half mirror position detecting means for detecting that the half mirror is near the display surface of the right-eye image display means and / or near the display surface of the left-eye image display means;
When the half mirror is in the vicinity of the display surface of the right-eye image display means and / or in the vicinity of the display surface of the left-eye image display means, the display brightness of the image in the image display means having the half mirror in the vicinity of the display surface is increased. The stereoscopic image display apparatus according to claim 1, further comprising display control means for raising the display image.

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