WO2012056692A1 - 3d image display device and 3d image display method - Google Patents

3d image display device and 3d image display method Download PDF

Info

Publication number
WO2012056692A1
WO2012056692A1 PCT/JP2011/005981 JP2011005981W WO2012056692A1 WO 2012056692 A1 WO2012056692 A1 WO 2012056692A1 JP 2011005981 W JP2011005981 W JP 2011005981W WO 2012056692 A1 WO2012056692 A1 WO 2012056692A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
display
radiation
stereoscopic image
displayed
Prior art date
Application number
PCT/JP2011/005981
Other languages
French (fr)
Japanese (ja)
Inventor
俊孝 阿賀野
孝夫 桑原
靖子 八尋
大田　恭義
玲 長谷川
Original Assignee
富士フイルム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Publication of WO2012056692A1 publication Critical patent/WO2012056692A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/066—Adjustment of display parameters for control of contrast

Definitions

  • the present invention relates to a stereoscopic image display apparatus and a stereoscopic image display method for capturing a subject from two different shooting directions and displaying a stereoscopic image using two captured parallax images.
  • stereoscopic viewing can be performed using parallax by displaying a plurality of images in combination.
  • Such stereoscopic images that can be stereoscopically viewed are obtained by capturing a plurality of images by photographing the same subject from different positions using a plurality of cameras, and using the parallax of the subjects included in the plurality of images. Can be generated by synthesizing these images.
  • a plurality of images are superimposed by differentiating the colors of the plurality of images, such as red and blue, or overlapping the polarization directions of the plurality of images.
  • a visual image can be generated.
  • a stereoscopic image is displayed, and the stereoscopic image displayed using the stereoscopic glasses that separate the images such as red-blue glasses and polarized glasses is fused with the auto-focus function of the eyes, whereby the image is displayed.
  • Stereoscopic viewing is possible (anaglyph method, polarization filter method). It is also possible to display a stereoscopic image by using stereoscopic glasses and alternately displaying a parallax image for the left eye and a parallax image for the right eye (time division method).
  • Patent Document 1 and Patent Document 2 propose two-dimensional display of text boxes and characters in a stereoscopic image.
  • Patent Document 3 since there is a strong sense of incongruity at the boundary between the 3D stereoscopic image area and the 2D image area, a transparent area is provided to soften the boundary, or the boundary is gradually thinned. However, nothing is disclosed regarding 2D display of text boxes and contrast.
  • the present invention has been made in view of the above circumstances, and a stereoscopic image display device that can reduce the fatigue of an observer when observing a monitor on which a stereoscopic image that can be stereoscopically viewed by an observer is displayed. It is another object of the present invention to provide a stereoscopic image display method.
  • the stereoscopic image display device of the present invention includes a display unit that displays a stereoscopic image that can be stereoscopically viewed using a parallax image for each of the shooting directions acquired by shooting a subject from different shooting directions; Two-dimensional display box display control means for two-dimensionally displaying a two-dimensional display box on the display unit; Image processing means for gradually reducing the contrast as it approaches the two-dimensional display box in the stereoscopic image of a partial region adjacent to the two-dimensional display box displayed two-dimensionally by the two-dimensional display box display control means; It is characterized by having.
  • the “two-dimensional display box” refers to a rectangular character input or display area or layout frame on an operation screen of an application program or the like, and can also input or display symbols, pictograms, and the like. An image can also be displayed.
  • the two-dimensional display box is not limited to a rectangular shape, and may be an elliptical shape, a cloud shape, a polygonal shape, or the like.
  • “contrast” means a difference in density value or a brightness value between a bright part and a dark part represented by a density value or a brightness value.
  • the luminance value is a value indicating the degree of screen brightness customarily used in the display
  • the density value is a value indicating the degree of image brightness customarily used in the film.
  • the image processing means reduces the contrast so that the contrast of a partial region of the stereoscopic image in contact with the two-dimensional display box becomes zero. Also good.
  • the parallax image is a radiation image detected by a radiation image detector by irradiating a subject with radiation, and the stereoscopic image is displayed on the display unit based on the radiation image. It is preferable that the medical image is displayed on the screen.
  • the stereoscopic image display method of the present invention displays a stereoscopically viewable stereoscopic image on the display unit using a parallax image for each of the photographing directions acquired by photographing subjects from different photographing directions, and two-dimensionally.
  • a display box is displayed two-dimensionally on the display unit, In the stereoscopic image of a partial area adjacent to the two-dimensional display box displayed two-dimensionally, the contrast is gradually decreased as the two-dimensional display box is approached.
  • the contrast can be reduced so that the contrast of a partial region of the stereoscopic image in contact with the two-dimensional display box becomes zero.
  • the parallax image is a radiographic image detected by a radiographic image detector by irradiating a subject with radiation, It is preferable to display a medical image which is a stereoscopic image based on the radiation image on the display unit.
  • a stereoscopic image that can be stereoscopically viewed using a parallax image for each photographing direction acquired by photographing subjects from different photographing directions is displayed.
  • the contrast gradually decreases as the two-dimensional display box is approached. Since the contrast is reduced at the boundary portion between the three-dimensional display region and the two-dimensional display region, the step between the three-dimensional display region and the two-dimensional display region at the boundary portion can be reduced.
  • the boundary portion between the three-dimensional display region and the two-dimensional display region disappears, so the three-dimensional display region Therefore, it is possible to reduce fatigue when the observer observes the display unit without switching from the display area to the two-dimensional display area.
  • FIG. 1 is a schematic configuration diagram of a breast image photographing display system using an embodiment of a stereoscopic image display device of the present invention.
  • the figure which looked at the arm part of the mammography display system 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 image capturing and displaying system shown in FIG.
  • the figure which shows an example of the display of the breast and the text box in the radiographic image for the right eye and the radiographic image for the left eye Explanatory drawing explaining the image processing of one Embodiment of this invention
  • FIG. 1 is a diagram showing a schematic configuration of the entire breast image photographing display system of the present embodiment.
  • a breast image radiographing display system 1 includes a mammography apparatus 10, a computer 2 connected to the mammography apparatus 10, a monitor 3 connected to the computer 2, and an input unit. 4 is provided.
  • 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 section 13 has an alphabet C shape, and a radiation table 16 is attached to one end of the arm section 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 radiation image detector 15 such as a flat panel detector, and a detector controller 33 for controlling reading of a charge signal from the radiation image detector 15 are provided.
  • 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.
  • 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.
  • a radiation image signal readout method a radiation image signal is read out 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 accommodated 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, time, tube voltage, etc.) in the radiation source 17.
  • a compression plate 18 disposed above the imaging table 14 to press and compress the breast, a support portion 20 that supports the compression plate 18, and a support portion 20 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 2 includes a central processing unit (CPU), a semiconductor memory, a storage device such as a hard disk and an SSD, and the like. With these hardware, a control unit 8a, a radiation image storage unit 8b, an image, and the like shown in FIG. A processing unit 8c and a display control unit 8d are configured.
  • FIG. 3 is a block diagram showing a schematic configuration inside the computer of the breast image radiographing display system shown in FIG. 1
  • FIG. 4 is a flowchart for explaining the operation of the breast image radiographing display system shown in FIG. 3
  • FIG. FIG. 6 is a diagram showing an example of display of a breast and a text box in a right-eye radiographic image and a left-eye radiographic image
  • FIG. 6 is an explanatory diagram for explaining image processing according to an embodiment of the present invention.
  • the control unit 8a outputs predetermined control signals to the various controllers 31 to 35 to control the entire system. A specific control method will be described in detail later.
  • the radiation image storage unit 8b stores in advance two radiation image signals detected by the radiation image detector 15 by photographing from two different photographing directions.
  • the image processing unit 8c performs image processing for changing the contrast in the two radiation images, and the image processing by the image processing unit 8c will be described in detail later.
  • the display control unit 8d includes a radiation image display control unit 51 and a text box display control unit 52.
  • the radiographic image display control unit 51 performs a predetermined process on the two radiographic image signals read from the radiographic image storage unit 8b, and then displays a normal radiographic stereo image of the breast M on the monitor 3. It is.
  • the text box display control unit 52 displays a text box for inputting characters two-dimensionally on the monitor 3, and as shown in FIG. 5, the right-eye radiographic image and the left-eye radiographic image are placed at the same position in each image.
  • the observer displays the text box on the monitor 3 two-dimensionally. Can be observed.
  • the input unit 4 accepts input of photographing conditions and observation conditions by the observer, input of operation instructions, and the like, and is configured by an input device such as a keyboard and a mouse, for example.
  • the monitor 3 is configured to be able to display a stereo image using two radiation image signals output from the computer 2 at the time of photographing a stereo image.
  • a stereo image for example, a radiographic image based on two radiographic image signals is displayed using two screens, and one of the radiographic images is observed by using a half mirror or a polarizing glass. It is possible to adopt a configuration in which a stereo image is displayed by being incident on the right eye of the observer and the other radiation image is incident on the left eye of the observer.
  • two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and this may be configured to generate a stereo image by observing with a polarizing glass, or a parallax barrier method and a lenticular method
  • a stereo image may be generated by displaying two radiation images on a stereoscopically viewable 3D liquid crystal.
  • the patient's breast M is placed on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18 (S10).
  • the first radiographic image of the two radiographic images constituting the stereo image of the breast M is captured (S12).
  • the control unit 8 a reads a convergence angle ⁇ for photographing a preset stereo image, and outputs the read information on the convergence angle ⁇ to the arm controller 31.
  • ⁇ ⁇ 2 ° is stored in advance as information on the convergence angle ⁇ at this time.
  • the present invention is not limited to this, and an arbitrary convergence angle is set by the photographer in the input unit 4. It can be set.
  • the arm controller 31 receives the information on the convergence angle ⁇ output from the control unit 8a.
  • the arm controller 31 captures the image of the arm unit 13 based on the information on the convergence angle ⁇ as shown in FIG.
  • a control signal is output so as to rotate + ⁇ ° with respect to a direction perpendicular to the table 14. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated + 2 ° with respect to a direction perpendicular to the imaging table 14.
  • the control unit 8a applies radiation to the radiation source controller 32 and the detector controller 33 and the radiation.
  • a control signal is output so as to read out the image signal.
  • radiation is emitted from the radiation source 17
  • a radiation image obtained by photographing the breast from the + 2 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33.
  • the radiographic image signal is stored in the radiographic image storage unit 8 b of the computer 2.
  • the second radiographic image of the two radiographic images constituting the stereo image of the breast M is taken (S13).
  • the arm controller 31 outputs a control signal so as to rotate the arm unit 13 by ⁇ ° with respect to a direction perpendicular to the imaging table 14 as shown in FIG. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated by ⁇ 2 ° with respect to a direction perpendicular to the imaging table 14.
  • the control unit 8 a applies radiation to the radiation source controller 32 and the detector controller 33, and the radiation.
  • a control signal is output so as to read out the image signal.
  • radiation is emitted from the radiation source 17
  • a radiation image obtained by imaging the breast from the ⁇ 2 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33.
  • predetermined signal processing is performed, it is stored in the radiation image storage unit 8b of the computer 2.
  • the two radiation image signals stored in the radiation image storage unit 8b as described above are input to the text box display control unit 52, and the text box display control unit 52 performs the right-eye radiation as described above.
  • Text boxes BR and BL are generated for the image and the left-eye radiation image, respectively.
  • the image signals of the right-eye radiation image and the left-eye radiation image in which the text boxes BR and BL are generated are input to the image processing unit 8c, and image processing is performed in the image processing unit 8c (S14).
  • the image processing by the image processing unit 8c is performed in a partial region adjacent to the text boxes BR and BL in the right-eye and left-eye radio images, specifically, in the text boxes BR and BL.
  • the contrast gradually decreases with respect to the 10 mm surrounding areas AR and AL (hereinafter referred to as three-dimensional parallax image areas AR and AL) as the text boxes BR and BL are approached. To be.
  • the density value for each pixel is converted so that the contrast in the three-dimensional parallax image areas AR and AL decreases in the direction of the arrow in FIG.
  • D is a density value before conversion
  • D ′ is a density value after conversion
  • D0 is a target density value
  • D ′ (x, y) A (L) ⁇ D (x, y) + D0
  • D (x, y) ⁇ D0 D ′ (x, y) A (L) ⁇ D (x, y) + (1 ⁇ A (L)) ⁇ D0
  • D0 may be set as appropriate, such as density 0, maximum density, or background density of a text box.
  • a (L) can be represented by a graph shown in FIG. 7, for example.
  • the radiographic image display control unit 51 is an image signal of two radiographic images stored in the radiographic image storage unit 8b, and the text box BR and BL are generated by the text box display control unit 52.
  • a stereo image of a breast that can be stereoscopically viewed on the monitor 3 and a text box that can be viewed two-dimensionally on the monitor 3 by performing predetermined processing on the image signal of the radiographic image for the left eye and the left eye and outputting it to the monitor 3 Is displayed (S15).
  • the contrast becomes closer to the text box. Since the contrast is reduced at the boundary between the 3D display area and the 2D display area, the step between the 3D display area and the 2D display area at the boundary can be reduced. This can reduce the recognition of the stereoscopic effect when the observer observes the text box, that is, the two-dimensional display area and the stereoscopic image, that is, the three-dimensional display area. Can be reduced.
  • the area subjected to image processing by the image processing unit 8c is 10 mm around the text box.
  • the present invention is not limited to this, and the observer inputs an arbitrary value from the input unit 4. This can be set as appropriate.
  • the text box is displayed on the monitor 3 two-dimensionally by the text box display control unit 52.
  • the present invention is not limited to this.
  • a two-dimensional display box display control unit is provided.
  • the two-dimensional image may be displayed on the monitor 3 by the two-dimensional display box display control unit.
  • the text box BR in the right-eye radiographic image and the left-eye radiographic image, the text box BR as shown by an arrow in FIG. , The contrast may be gradually reduced so that the contrast of the three-dimensional parallax image areas AR and AL in contact with BL becomes zero.
  • the density value for each pixel is converted so that the contrast in the three-dimensional parallax image areas AR and AL decreases in the direction of the arrow in FIG.
  • a (L) is a function of a distance (L) from a text box
  • D is a pixel value before conversion
  • D ′ is a pixel value after conversion
  • D ′ (x, y) A (L) ⁇ D (x, y)
  • a (L) can be represented by a graph shown in FIG. 7, for example.
  • the boundary portion between the three-dimensional display area and the two-dimensional display area is As a result, there is no sudden switching from the three-dimensional display area to the two-dimensional display area, and fatigue when the observer observes the display unit can be reduced.
  • one embodiment of the stereoscopic image display device of the present invention is applied to a breast image capturing and displaying system.
  • the subject of the present invention is not limited to the breast, and for example, a chest or a head.
  • the present invention can also be applied to a radiographic imaging display system that captures images such as.

Abstract

The present invention addresses the problem of making it possible to reduce the fatigue a viewer experiences when viewing a monitor on which a 3D image that can be viewed in 3D is displayed. To that end, in the present invention, a 3D image that can be viewed in 3D is displayed on a display unit, using per-imaging-direction parallax images acquired by imaging a subject from mutually different imaging directions; a 2D-display box is displayed on the display unit in 2D; and in partial regions (AR, AL) of the 3D image adjacent to the 2D-display box (BR, BL) displayed in 2D, the contrast is set such that the closer to the 2D-display box (BR, BL), the lower the contrast.

Description

立体視画像表示装置および立体視画像表示方法Stereoscopic image display device and stereoscopic image display method
　本発明は、互いに異なる２つの撮影方向から被写体を撮影し、撮影した２つの視差画像を用いて立体視画像を表示する立体視画像表示装置及び立体視画像表示方法に関するものである。 The present invention relates to a stereoscopic image display apparatus and a stereoscopic image display method for capturing a subject from two different shooting directions and displaying a stereoscopic image using two captured parallax images.
従来、複数の画像を組み合わせて表示することにより、視差を利用して立体視できることが知られている。このような立体視ができる立体視画像は、同一の被写体を異なる位置から複数のカメラを用いて撮影することにより複数の画像を取得し、複数の画像に含まれる被写体の視差を利用して複数の画像を合成することにより生成することができる。 Conventionally, it is known that stereoscopic viewing can be performed using parallax by displaying a plurality of images in combination. Such stereoscopic images that can be stereoscopically viewed are obtained by capturing a plurality of images by photographing the same subject from different positions using a plurality of cameras, and using the parallax of the subjects included in the plurality of images. Can be generated by synthesizing these images.
具体的には、複数の画像の色を例えば赤と青のように異ならせて重ね合わせたり、複数の画像の偏光方向を異ならせて重ね合わせたりすることにより、複数の画像を合成して立体視画像を生成することができる。この場合、立体視画像を表示して、赤青眼鏡や偏光眼鏡等の画像を分離する立体視眼鏡を用いて表示された立体視画像を目の自動焦点機能により融合視することにより、画像を立体視することができる（アナグリフ方式、偏光フィルタ方式）。また立体視眼鏡を使用し、左目用視差画像と右目用視差画像を交互に表示することにより、立体視画像を表示することも可能である（時分割方式）。 Specifically, a plurality of images are superimposed by differentiating the colors of the plurality of images, such as red and blue, or overlapping the polarization directions of the plurality of images. A visual image can be generated. In this case, a stereoscopic image is displayed, and the stereoscopic image displayed using the stereoscopic glasses that separate the images such as red-blue glasses and polarized glasses is fused with the auto-focus function of the eyes, whereby the image is displayed. Stereoscopic viewing is possible (anaglyph method, polarization filter method). It is also possible to display a stereoscopic image by using stereoscopic glasses and alternately displaying a parallax image for the left eye and a parallax image for the right eye (time division method).
　上記のような立体視画像においては、特にテキスト等の文字をモニタに表示したときの立体視画像に対する観察時の疲労が問題となっていた。そこで、立体視画像中のテキストボックスや文字を２次元表示することが特許文献１や特許文献２に提案されている。 In the stereoscopic image as described above, fatigue during observation of the stereoscopic image particularly when characters such as text are displayed on the monitor has been a problem. Thus, Patent Document 1 and Patent Document 2 propose two-dimensional display of text boxes and characters in a stereoscopic image.
特表２００８－５２１４６２号公報JP 2008-521462 A 特開２００５－２６９０２２号公報JP 2005-269022 A 特開２００６－３４００２７号公報JP 2006-340027 A
　しかしながら、上記特許文献１や特許文献２で提案されているように、立体視画像においてテキストボックスや文字を２次元表示すると、立体視画像中に３次元表示領域と２次元表示領域とが存在してしまい、３次元表示領域と２次元表示領域との境界部分に段差が生じてしまう。このように立体視画像中に段差が生じると観察者が立体視画像を立体視するときに、強い違和感を感じて疲労してしまう虞がある。 However, as proposed in Patent Document 1 and Patent Document 2, when a text box or a character is displayed two-dimensionally in a stereoscopic image, a three-dimensional display region and a two-dimensional display region exist in the stereoscopic image. As a result, a step occurs at the boundary between the 3D display area and the 2D display area. Thus, when a level | step difference arises in a stereoscopic vision image, when an observer stereoscopically views a stereoscopic vision image, there exists a possibility that it may feel tired by feeling a strong sense of discomfort.
　特許文献３は３次元立体映像領域と２次元映像領域の境界部分において、境界面に強い違和感があるため、それをやわらげるために透明化領域を設けたことや、境界部分を徐々に薄くすることが記載されているが、テキストボックスを２Ｄ表示することやコントラストに関しては何も開示されていない。 In Patent Document 3, since there is a strong sense of incongruity at the boundary between the 3D stereoscopic image area and the 2D image area, a transparent area is provided to soften the boundary, or the boundary is gradually thinned. However, nothing is disclosed regarding 2D display of text boxes and contrast.
　本発明は、上記の事情に鑑みなされたものであり、観察者が立体視可能な立体視画像が表示されたモニタを観察するときの観察者の疲労を低減することができる立体視画像表示装置及び立体視画像表示方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and a stereoscopic image display device that can reduce the fatigue of an observer when observing a monitor on which a stereoscopic image that can be stereoscopically viewed by an observer is displayed. It is another object of the present invention to provide a stereoscopic image display method.
　本発明の立体視画像表示装置は、互いに異なる撮影方向からの被写体の撮影によって取得された前記撮影方向毎の視差画像を用いて立体視可能な立体視画像を表示する表示部と、
　２次元表示ボックスを前記表示部に２次元表示させる２次元表示ボックス表示制御手段と、
　該２次元表示ボックス表示制御手段により２次元表示された前記２次元表示ボックスに隣接する一部領域の前記立体視画像において、前記２次元表示ボックスに近づくほどコントラストを徐々に小さくする画像処理手段とを備えていることを特徴とするものである。 The stereoscopic image display device of the present invention includes a display unit that displays a stereoscopic image that can be stereoscopically viewed using a parallax image for each of the shooting directions acquired by shooting a subject from different shooting directions;
Two-dimensional display box display control means for two-dimensionally displaying a two-dimensional display box on the display unit;
Image processing means for gradually reducing the contrast as it approaches the two-dimensional display box in the stereoscopic image of a partial region adjacent to the two-dimensional display box displayed two-dimensionally by the two-dimensional display box display control means; It is characterized by having.
　なお本発明において「２次元表示ボックス」は、アプリケーションプログラム等の操作画面における矩形をした文字入力又は表示領域やレイアウト枠のことをいい、記号や絵文字等を入力又は表示することもできる。また、画像を表示することもできる。但し、２次元表示ボックスは、矩形状に限定するものではなく、例えば、楕円形状や雲形、多角形状等であっても構わない。 In the present invention, the “two-dimensional display box” refers to a rectangular character input or display area or layout frame on an operation screen of an application program or the like, and can also input or display symbols, pictograms, and the like. An image can also be displayed. However, the two-dimensional display box is not limited to a rectangular shape, and may be an elliptical shape, a cloud shape, a polygonal shape, or the like.
　また本発明において「コントラスト」は、濃度値や輝度値によって表される明るい部分と暗い部分との濃度値の差や輝度値の差のことをいう。なお輝度値はディスプレイで習慣的に使用される画面の明るさの度合いを示す値であり、濃度値はフイルムで習慣的に使用される画像の明るさの度合いを示す値である。 In the present invention, “contrast” means a difference in density value or a brightness value between a bright part and a dark part represented by a density value or a brightness value. The luminance value is a value indicating the degree of screen brightness customarily used in the display, and the density value is a value indicating the degree of image brightness customarily used in the film.
　また本発明の立体視画像表示装置においては、前記画像処理手段が、前記２次元表示ボックスに接する前記立体視画像の一部領域のコントラストが０になるように前記コントラストを小さくするものであってもよい。 In the stereoscopic image display apparatus of the present invention, the image processing means reduces the contrast so that the contrast of a partial region of the stereoscopic image in contact with the two-dimensional display box becomes zero. Also good.
　また本発明の立体視画像表示装置においては、前記視差画像が被写体への放射線の照射によって放射線画像検出器により検出された放射線画像であり、前記立体視画像が該放射線画像に基づいて前記表示部に表示される医療画像であることが好ましい。 In the stereoscopic image display device of the present invention, the parallax image is a radiation image detected by a radiation image detector by irradiating a subject with radiation, and the stereoscopic image is displayed on the display unit based on the radiation image. It is preferable that the medical image is displayed on the screen.
　本発明の立体視画像表示方法は、互いに異なる撮影方向からの被写体の撮影によって取得された前記撮影方向毎の視差画像を用いて立体視可能な立体視画像を前記表示部に表示すると共に２次元表示ボックスを前記表示部に２次元表示し、
　該２次元表示された前記２次元表示ボックスに隣接する一部領域の前記立体視画像において、前記２次元表示ボックスに近づくほどコントラストを徐々に小さくすることを特徴とする。 The stereoscopic image display method of the present invention displays a stereoscopically viewable stereoscopic image on the display unit using a parallax image for each of the photographing directions acquired by photographing subjects from different photographing directions, and two-dimensionally. A display box is displayed two-dimensionally on the display unit,
In the stereoscopic image of a partial area adjacent to the two-dimensional display box displayed two-dimensionally, the contrast is gradually decreased as the two-dimensional display box is approached.
　なお本発明の立体視画像表示方法においては、前記２次元表示ボックスに接する前記立体視画像の一部領域のコントラストが０になるように前記コントラストを小さくすることができる。 In the stereoscopic image display method of the present invention, the contrast can be reduced so that the contrast of a partial region of the stereoscopic image in contact with the two-dimensional display box becomes zero.
　また本発明の立体視画像表示方法においては、前記視差画像が被写体への放射線の照射によって放射線画像検出器により検出された放射線画像であり、
該放射線画像に基づいた立体視画像である医療画像を前記表示部に表示することが好ましい。 In the stereoscopic image display method of the present invention, the parallax image is a radiographic image detected by a radiographic image detector by irradiating a subject with radiation,
It is preferable to display a medical image which is a stereoscopic image based on the radiation image on the display unit.
　本発明の立体視画像表示装置及び立体視画像表示方法によれば、互いに異なる撮影方向からの被写体の撮影によって取得された撮影方向毎の視差画像を用いて立体視可能な立体視画像を表示部に表示すると共に２次元表示ボックスを表示部に２次元表示し、２次元表示された２次元表示ボックスに隣接する一部領域の立体視画像において、２次元表示ボックスに近づくほどコントラストを徐々に小さくするようにしたので、３次元表示領域と２次元表示領域との境界部分においてコントラストが小さくなることにより境界部分における３次元表示領域と２次元表示領域との段差を小さくすることができ、観察者が２次元表示ボックスすなわち２次元表示領域と立体視画像すなわち３次元表示領域とを観察するときに立体感の認識を弱くすることができるので観察者が表示部を観察するときの疲労を低減することができる。 According to the stereoscopic image display device and the stereoscopic image display method of the present invention, a stereoscopic image that can be stereoscopically viewed using a parallax image for each photographing direction acquired by photographing subjects from different photographing directions is displayed. In the stereoscopic image of a partial area adjacent to the two-dimensional display box displayed in two dimensions, the contrast gradually decreases as the two-dimensional display box is approached. Since the contrast is reduced at the boundary portion between the three-dimensional display region and the two-dimensional display region, the step between the three-dimensional display region and the two-dimensional display region at the boundary portion can be reduced. Reduces the perception of stereoscopic effect when observing a two-dimensional display box, ie, a two-dimensional display region, and a stereoscopic image, ie, a three-dimensional display region Since bets can can observer reduces fatigue when observing the display unit.
　また２次元表示ボックスに接する立体視画像の一部領域のコントラストが０になるようにコントラストを小さくする場合には、３次元表示領域と２次元表示領域との境界部分がなくなるので３次元表示領域から２次元表示領域へ急激に切り替わることがなく、観察者が表示部を観察するときの疲労を低減することができる。 Further, when the contrast is reduced so that the contrast of a partial region of the stereoscopic image in contact with the two-dimensional display box becomes zero, the boundary portion between the three-dimensional display region and the two-dimensional display region disappears, so the three-dimensional display region Therefore, it is possible to reduce fatigue when the observer observes the display unit without switching from the display area to the two-dimensional display area.
本発明の立体視画像表示装置の一実施形態を用いた乳房画像撮影表示システムの概略構成図1 is a schematic configuration diagram of a breast image photographing display system using an embodiment of a stereoscopic image display device of the present invention. 図１に示す乳房画像撮影表示システムのアーム部を図１の右方向から見た図The figure which looked at the arm part of the mammography display system shown in FIG. 1 from the right direction of FIG. 図１に示す乳房画像撮影表示システムのコンピュータ内部の概略構成を示すブロック図1 is a block diagram showing a schematic configuration inside a computer of the breast image capturing and displaying system shown in FIG. 図３に示す乳房画像撮影表示システムの作用を説明するためのフローチャートThe flowchart for demonstrating an effect | action of the breast image radiographing display system shown in FIG. 右目用放射線画像と左目用放射線画像とにおける乳房とテキストボックスの表示の一例を示す図The figure which shows an example of the display of the breast and the text box in the radiographic image for the right eye and the radiographic image for the left eye 本発明の一実施形態の画像処理について説明する説明図Explanatory drawing explaining the image processing of one Embodiment of this invention テキストボックスからの距離（Ｌ）の関数Ａ（Ｌ）の一例を示すグラフA graph showing an example of a function A (L) of a distance (L) from a text box
　以下、図面を参照して本発明の立体視画像表示装置の一実施形態を用いた乳房画像撮影表示システムについて説明する。図１は、本実施形態の乳房画像撮影表示システム全体の概略構成を示す図である。 Hereinafter, a breast image photographing display system using an embodiment of a stereoscopic image display apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of the entire breast image photographing display system of the present embodiment.
　本実施形態の乳房画像撮影表示システム１は、図１に示すように、乳房画像撮影装置１０と、乳房画像撮影装置１０に接続されたコンピュータ２と、コンピュータ２に接続されたモニタ３および入力部４とを備えている。 As shown in FIG. 1, a breast image radiographing display system 1 according to this embodiment includes a mammography apparatus 10, a computer 2 connected to the mammography apparatus 10, a monitor 3 connected to the computer 2, and an input unit. 4 is provided.
　そして、乳房画像撮影装置１０は、図１に示すように、基台１１と、基台１１に対し上下方向（Ｚ方向）に移動可能であり、かつ回転可能な回転軸１２と、回転軸１２により基台１１と連結されたアーム部１３を備えている。なお、図２には、図１の右方向から見たアーム部１３を示している。 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.
　アーム部１３はアルファベットのＣの形をしており、その一端には撮影台１４が、その他端には撮影台１４と対向するように放射線照射部１６が取り付けられている。アーム部１３の回転および上下方向の移動は、基台１１に組み込まれたアームコントローラ３１により制御される。 The arm section 13 has an alphabet C shape, and a radiation table 16 is attached to one end of the arm section 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.
　撮影台１４の内部には、フラットパネルディテクタ等の放射線画像検出器１５と、放射線画像検出器１５からの電荷信号の読み出しなどを制御する検出器コントローラ３３が備えられている。 In the imaging table 14, a radiation image detector 15 such as a flat panel detector, and a detector controller 33 for controlling reading of a charge signal from the radiation image detector 15 are provided.
　また、撮影台１４の内部には、放射線画像検出器１５から読み出された電荷信号を電圧信号に変換するチャージアンプや、チャージアンプから出力された電圧信号をサンプリングする相関２重サンプリング回路や、電圧信号をデジタル信号に変換するＡＤ変換部などが設けられた回路基板なども設置されている。 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.
　また、撮影台１４はアーム部１３に対し回転可能に構成されており、基台１１に対してアーム部１３が回転したときでも、撮影台１４の向きは基台１１に対し固定された向きとすることができる。 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.
　放射線画像検出器１５は、放射線画像の記録と読出しを繰り返して行うことができるものであり、放射線の照射を直接受けて電荷を発生する、いわゆる直接型の放射線画像検出器を用いてもよいし、放射線を一旦可視光に変換し、その可視光を電荷信号に変換する、いわゆる間接型の放射線画像検出器を用いるようにしてもよい。また、放射線画像信号の読出方式としては、ＴＦＴ（thin film transistor）スイッチをオン・オフされることによって放射線画像信号が読みだされる、いわゆるＴＦＴ読出方式のものや、読取光を照射することによって放射線画像信号が読み出される、いわゆる光読出方式のものを用いることが望ましいが、これに限らずその他のものを用いるようにしてもよい。 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 readout method, a radiation image signal is read out 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.
　放射線照射部１６の中には放射線源１７と、放射線源コントローラ３２が収納されている。放射線源コントローラ３２は、放射線源１７から放射線を照射するタイミングと、放射線源１７における放射線発生条件（管電流、時間、管電圧等）を制御するものである。 A radiation source 17 and a radiation source controller 32 are accommodated 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, time, tube voltage, etc.) in the radiation source 17.
　また、アーム部１３の中央部には、撮影台１４の上方に配置されて乳房を押さえつけて圧迫する圧迫板１８と、その圧迫板１８を支持する支持部２０と、支持部２０を上下方向（Ｚ方向）に移動させる移動機構１９が設けられている。圧迫板１８の位置、圧迫圧は、圧迫板コントローラ３４により制御される。 Further, in the central portion of the arm portion 13, a compression plate 18 disposed above the imaging table 14 to press and compress the breast, a support portion 20 that supports the compression plate 18, and a support portion 20 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.
　コンピュータ２は、中央処理装置（ＣＰＵ）および半導体メモリやハードディスクやＳＳＤ等のストレージデバイスなどを備えており、これらのハードウェアによって、図３に示すような制御部８ａ、放射線画像記憶部８ｂ、画像処理部８ｃ、表示制御部８ｄが構成されている。 The computer 2 includes a central processing unit (CPU), a semiconductor memory, a storage device such as a hard disk and an SSD, and the like. With these hardware, a control unit 8a, a radiation image storage unit 8b, an image, and the like shown in FIG. A processing unit 8c and a display control unit 8d are configured.
なお図３は図１に示す乳房画像撮影表示システムのコンピュータ内部の概略構成を示すブロック図であり、図４は図３に示す乳房画像撮影表示システムの作用を説明するためのフローチャート、図５は、右目用放射線画像と左目用放射線画像とにおける乳房とテキストボックスの表示の一例を示す図、図６は本発明の一実施形態の画像処理について説明する説明図である。 FIG. 3 is a block diagram showing a schematic configuration inside the computer of the breast image radiographing display system shown in FIG. 1, FIG. 4 is a flowchart for explaining the operation of the breast image radiographing display system shown in FIG. 3, and FIG. FIG. 6 is a diagram showing an example of display of a breast and a text box in a right-eye radiographic image and a left-eye radiographic image, and FIG. 6 is an explanatory diagram for explaining image processing according to an embodiment of the present invention.
　制御部８ａは、各種のコントローラ３１～３５に対して所定の制御信号を出力し、システム全体の制御を行うものである。具体的な制御方法については後で詳述する。 The control unit 8a outputs predetermined control signals to the various controllers 31 to 35 to control the entire system. A specific control method will be described in detail later.
　放射線画像記憶部８ｂは、互いに異なる２つの撮影方向からの撮影によって放射線画像検出器１５によって検出された２枚の放射線画像信号を予め記憶するものである。 The radiation image storage unit 8b stores in advance two radiation image signals detected by the radiation image detector 15 by photographing from two different photographing directions.
　画像処理部８ｃは、上記２枚の放射線画像におけるコントラストを変更する画像処理を行うものであり、画像処理部８ｃによる画像処理については後で詳細に説明する。 The image processing unit 8c performs image processing for changing the contrast in the two radiation images, and the image processing by the image processing unit 8c will be described in detail later.
　表示制御部８ｄは、放射線画像表示制御部５１とテキストボックス表示制御部５２とを備えている。放射線画像表示制御部５１は、放射線画像記憶部８ｂから読み出された２枚の放射線画像信号に対して所定の処理を施した後、モニタ３に乳房Ｍの通常撮影のステレオ画像を表示させるものである。 The display control unit 8d includes a radiation image display control unit 51 and a text box display control unit 52. The radiographic image display control unit 51 performs a predetermined process on the two radiographic image signals read from the radiographic image storage unit 8b, and then displays a normal radiographic stereo image of the breast M on the monitor 3. It is.
　テキストボックス表示制御部５２は、文字を入力するテキストボックスをモニタ３に２次元表示させるものであり、図５に示すように右目用放射線画像と左目用放射線画像において各々の画像中の同じ位置にテキストボックスＢＲ，ＢＬを生成することにより、右目用放射線画像と左目用放射線画像の画像信号に基づく立体視画像をモニタ３に表示したときに観察者がテキストボックスをモニタ３上で２次元的に観察することができる。 The text box display control unit 52 displays a text box for inputting characters two-dimensionally on the monitor 3, and as shown in FIG. 5, the right-eye radiographic image and the left-eye radiographic image are placed at the same position in each image. By generating the text boxes BR and BL, when the stereoscopic image based on the image signals of the right-eye radiographic image and the left-eye radiographic image is displayed on the monitor 3, the observer displays the text box on the monitor 3 two-dimensionally. Can be observed.
　入力部４は、観察者による撮影条件や観察条件などの入力や操作指示の入力などを受け付けるものであり、たとえば、キーボードやマウスなどの入力デバイスによって構成されるものである。 The input unit 4 accepts input of photographing conditions and observation conditions by the observer, input of operation instructions, and the like, and is configured by an input device such as a keyboard and a mouse, for example.
　モニタ３は、ステレオ画像の撮影時においては、コンピュータ２から出力された２つの放射線画像信号を用いてステレオ画像を表示可能なように構成されたものである。ステレオ画像を表示する構成としては、たとえば、２つの画面を用いて２つの放射線画像信号に基づく放射線画像をそれぞれ表示させて、これらをハーフミラーや偏光グラスなどを用いることで一方の放射線画像は観察者の右目に入射させ、他方の放射線画像は観察者の左目に入射させることによってステレオ画像を表示する構成を採用することができる。または、たとえば、２つの放射線画像を所定の視差量だけずらして重ね合わせて表示し、これを偏光グラスで観察することでステレオ画像を生成する構成としてもよいし、もしくはパララックスバリア方式およびレンチキュラー方式のように、２つの放射線画像を立体視可能な３Ｄ液晶に表示することによってステレオ画像を生成する構成としてもよい。 The monitor 3 is configured to be able to display a stereo image using two radiation image signals output from the computer 2 at the time of photographing a stereo image. As a configuration for displaying a stereo image, for example, a radiographic image based on two radiographic image signals is displayed using two screens, and one of the radiographic images is observed by using a half mirror or a polarizing glass. It is possible to adopt a configuration in which a stereo image is displayed by being incident on the right eye of the observer and the other radiation image is incident on the left eye of the observer. Or, for example, two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and this may be configured to generate a stereo image by observing with a polarizing glass, or a parallax barrier method and a lenticular method As described above, a stereo image may be generated by displaying two radiation images on a stereoscopically viewable 3D liquid crystal.
　次に、本実施形態の乳房画像撮影表示システムの作用について説明する、図４に示すフローチャートを参照しながら説明する。 Next, the operation of the breast image radiographing display system of this embodiment will be described with reference to the flowchart shown in FIG.
　図４に示すように、まず、撮影台１４の上に患者の乳房Ｍが設置され、圧迫板１８により乳房Ｍが所定の圧力によって圧迫される（Ｓ１０）。 As shown in FIG. 4, first, the patient's breast M is placed on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18 (S10).
　次に、入力部４おいて、撮影者によって種々の撮影条件が入力された後、撮影開始の指示が入力される（Ｓ１１）。 Next, in the input unit 4, after various photographing conditions are inputted by the photographer, an instruction to start photographing is inputted (S11).
　そして、入力部４において撮影開始の指示があると、乳房Ｍのステレオ画像を構成する２枚の放射線画像のうちの１枚目の放射線画像の撮影が行われる（Ｓ１２）。 Then, when there is an instruction to start imaging at the input unit 4, the first radiographic image of the two radiographic images constituting the stereo image of the breast M is captured (S12).
　具体的には、まず、制御部８ａが、予め設定されたステレオ画像の撮影のための輻輳角θを読み出し、その読み出した輻輳角θの情報をアームコントローラ３１に出力する。なお、本実施形態においては、このときの輻輳角θの情報としてθ＝±２°が予め記憶されているものとするが、これに限らず、撮影者によって入力部４において任意の輻輳角を設定可能である。 Specifically, first, the control unit 8 a reads a convergence angle θ for photographing a preset stereo image, and outputs the read information on the convergence angle θ to the arm controller 31. In this embodiment, θ = ± 2 ° is stored in advance as information on the convergence angle θ at this time. However, the present invention is not limited to this, and an arbitrary convergence angle is set by the photographer in the input unit 4. It can be set.
　そして、アームコントローラ３１において、制御部８ａから出力された輻輳角θの情報が受け付けられ、アームコントローラ３１は、この輻輳角θの情報に基づいて、図２に示すように、アーム部１３が撮影台１４に垂直な方向に対して＋θ°回転するよう制御信号を出力する。すなわち、本実施形態においては、アーム部１３を撮影台１４に垂直な方向に対して＋２°回転するよう制御信号を出力する。 Then, the arm controller 31 receives the information on the convergence angle θ output from the control unit 8a. The arm controller 31 captures the image of the arm unit 13 based on the information on the convergence angle θ as shown in FIG. A control signal is output so as to rotate + θ ° with respect to a direction perpendicular to the table 14. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated + 2 ° with respect to a direction perpendicular to the imaging table 14.
　そして、このアームコントローラ３１から出力された制御信号に応じてアーム部１３が、＋２°だけ回転した状態において、制御部８ａは、放射線源コントローラ３２および検出器コントローラ３３に対して放射線の照射と放射線画像信号の読出しを行うよう制御信号を出力する。この制御信号に応じて、放射線源１７から放射線が射出され、乳房を＋２°方向から撮影した放射線画像が放射線画像検出器１５によって検出され、検出器コントローラ３３によって放射線画像信号が読み出され、その放射線画像信号に対して所定の信号処理が施された後、コンピュータ２の放射線画像記憶部８ｂに記憶される。 Then, in a state where the arm unit 13 is rotated by + 2 ° in accordance with the control signal output from the arm controller 31, the control unit 8a applies radiation to the radiation source controller 32 and the detector controller 33 and the radiation. A control signal is output so as to read out the image signal. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by photographing the breast from the + 2 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33. After predetermined signal processing is performed on the radiographic image signal, the radiographic image signal is stored in the radiographic image storage unit 8 b of the computer 2.
　次に、乳房Ｍのステレオ画像を構成する２枚の放射線画像のうちの２枚目の放射線画像の撮影が行われる（Ｓ１３）。具体的には、アームコントローラ３１が、図２に示すように、アーム部１３を撮影台１４に垂直な方向に対して－θ°回転するよう制御信号を出力する。すなわち、本実施形態においては、アーム部１３を撮影台１４に垂直な方向に対して－２°回転するよう制御信号を出力する。 Next, the second radiographic image of the two radiographic images constituting the stereo image of the breast M is taken (S13). Specifically, the arm controller 31 outputs a control signal so as to rotate the arm unit 13 by −θ ° with respect to a direction perpendicular to the imaging table 14 as shown in FIG. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated by −2 ° with respect to a direction perpendicular to the imaging table 14.
　そして、このアームコントローラ３１から出力された制御信号に応じてアーム部１３が－２°だけ回転した状態において、制御部８ａは、放射線源コントローラ３２および検出器コントローラ３３に対して放射線の照射と放射線画像信号の読出しを行うよう制御信号を出力する。この制御信号に応じて、放射線源１７から放射線が射出され、乳房を－２°方向から撮影した放射線画像が放射線画像検出器１５によって検出され、検出器コントローラ３３によって放射線画像信号が読み出され、所定の信号処理が施された後、コンピュータ２の放射線画像記憶部８ｂに記憶される。 Then, in a state where the arm unit 13 is rotated by −2 ° according to the control signal output from the arm controller 31, the control unit 8 a applies radiation to the radiation source controller 32 and the detector controller 33, and the radiation. A control signal is output so as to read out the image signal. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by imaging the breast from the −2 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33. After predetermined signal processing is performed, it is stored in the radiation image storage unit 8b of the computer 2.
　次に、上述したようにして放射線画像記憶部８ｂに記憶された２枚の放射線画像信号は、テキストボックス表示制御部５２に入力され、テキストボックス表示制御部５２が上述したようにして右目用放射線画像と左目用放射線画像の各々にテキストボックスＢＲ，ＢＬを生成する。そしてテキストボックスＢＲ，ＢＬが生成された右目用放射線画像と左目用放射線画像の画像信号が画像処理部８ｃに入力され、画像処理部８ｃにおいて画像処理が施される（Ｓ１４）。 Next, the two radiation image signals stored in the radiation image storage unit 8b as described above are input to the text box display control unit 52, and the text box display control unit 52 performs the right-eye radiation as described above. Text boxes BR and BL are generated for the image and the left-eye radiation image, respectively. Then, the image signals of the right-eye radiation image and the left-eye radiation image in which the text boxes BR and BL are generated are input to the image processing unit 8c, and image processing is performed in the image processing unit 8c (S14).
画像処理部８ｃによる画像処理は、図５に示すように右目用放射線画像と左目用放射線画像においてテキストボックスＢＲ，ＢＬに隣接する一部領域の放射線画像、具体的にはテキストボックスＢＲ，ＢＬの周囲１０ｍｍの立体視される領域ＡＲ，ＡＬ（以下、３次元視差画像領域ＡＲ，ＡＬという）に対して、図６に矢印で示すように、テキストボックスＢＲ，ＢＬに近づくほどコントラストが徐々に小さくなるようにする。 As shown in FIG. 5, the image processing by the image processing unit 8c is performed in a partial region adjacent to the text boxes BR and BL in the right-eye and left-eye radio images, specifically, in the text boxes BR and BL. As shown by the arrows in FIG. 6, the contrast gradually decreases with respect to the 10 mm surrounding areas AR and AL (hereinafter referred to as three-dimensional parallax image areas AR and AL) as the text boxes BR and BL are approached. To be.
具体的には３次元視差画像領域ＡＲ，ＡＬにおいてそれぞれ図６の矢印方向にコントラストが小さくなるように１画素毎の濃度値を変換する。例えば、Ａ（Ｌ）をテキストボックスからの距離（Ｌ）の関数、Ｄを変換前の濃度値、Ｄ’を変換後の濃度値、Ｄ０をターゲット濃度値としたとき、
Ｄ（ｘ,ｙ）≧ Ｄ０の場合
Ｄ'（ｘ,ｙ）＝Ａ（Ｌ）×Ｄ（ｘ,ｙ）＋Ｄ０
Ｄ（ｘ,ｙ）＜Ｄ０の場合
Ｄ'（ｘ,ｙ）＝Ａ（Ｌ）×Ｄ（ｘ,ｙ）＋（１－Ａ（Ｌ））×Ｄ０
のようにすればよい。ここでＤ０は濃度０、濃度最大、またはテキストボックスの背景濃度など適宜設定すればよい。なおＡ（Ｌ）は例えば図７に示すグラフで示すことができる。 Specifically, the density value for each pixel is converted so that the contrast in the three-dimensional parallax image areas AR and AL decreases in the direction of the arrow in FIG. For example, when A (L) is a function of the distance (L) from the text box, D is a density value before conversion, D ′ is a density value after conversion, and D0 is a target density value,
When D (x, y) ≧ D0 D ′ (x, y) = A (L) × D (x, y) + D0
When D (x, y) <D0 D ′ (x, y) = A (L) × D (x, y) + (1−A (L)) × D0
Like this. Here, D0 may be set as appropriate, such as density 0, maximum density, or background density of a text box. A (L) can be represented by a graph shown in FIG. 7, for example.
　次に放射線画像表示制御部５１が、放射線画像記憶部８ｂに記憶された２枚の放射線画像の画像信号であってテキストボックス表示制御部５２によってテキストボックスＢＲ，ＢＬが生成された右目用放射線画像と左目用放射線画像の画像信号に対して所定の処理を施してモニタ３に出力することにより、モニタ３において立体視可能な乳房のステレオ画像とモニタ３上に２次元的に視認可能なテキストボックスが表示される（Ｓ１５）。 Next, the radiographic image display control unit 51 is an image signal of two radiographic images stored in the radiographic image storage unit 8b, and the text box BR and BL are generated by the text box display control unit 52. A stereo image of a breast that can be stereoscopically viewed on the monitor 3 and a text box that can be viewed two-dimensionally on the monitor 3 by performing predetermined processing on the image signal of the radiographic image for the left eye and the left eye and outputting it to the monitor 3 Is displayed (S15).
このように本実施形態の乳房画像撮影表示システム及び乳房画像表示システムにおける乳房画像撮影表示方法によれば、２次元表示されたテキストボックスの周囲１０ｍｍの立体視画像領域において、テキストボックスに近づくほどコントラストを徐々に小さくするようにしたので、３次元表示領域と２次元表示領域との境界部分においてコントラストが小さくなることにより境界部分における３次元表示領域と２次元表示領域との段差を小さくすることができ、観察者がテキストボックスすなわち２次元表示領域と立体視画像すなわち３次元表示領域とを観察するときに立体感の認識を弱くすることができるので観察者が表示部を観察するときの疲労を低減することができる。 As described above, according to the breast image capturing and displaying system of the present embodiment and the breast image capturing and displaying method in the breast image displaying system, in the stereoscopic image region around 10 mm around the two-dimensionally displayed text box, the contrast becomes closer to the text box. Since the contrast is reduced at the boundary between the 3D display area and the 2D display area, the step between the 3D display area and the 2D display area at the boundary can be reduced. This can reduce the recognition of the stereoscopic effect when the observer observes the text box, that is, the two-dimensional display area and the stereoscopic image, that is, the three-dimensional display area. Can be reduced.
なお本実施形態では画像処理部８ｃにより画像処理が施される領域をテキストボックスの周囲１０ｍｍとしたが、本発明はこれに限られるものではなく、観察者が入力部４から任意の値を入力することにより適宜設定することが可能である。 In the present embodiment, the area subjected to image processing by the image processing unit 8c is 10 mm around the text box. However, the present invention is not limited to this, and the observer inputs an arbitrary value from the input unit 4. This can be set as appropriate.
また本実施形態では、テキストボックス表示制御部５２によってモニタ３にテキストボックスを２次元表示させるようにしたが、本発明はこれに限られるものではなく、例えば２次元表示ボックス表示制御部を備えて、該２次元表示ボックス表示制御部によってモニタ３に２次元画像を表示させるようにしてもよい。 In this embodiment, the text box is displayed on the monitor 3 two-dimensionally by the text box display control unit 52. However, the present invention is not limited to this. For example, a two-dimensional display box display control unit is provided. The two-dimensional image may be displayed on the monitor 3 by the two-dimensional display box display control unit.
また図５に示すように右目用放射線画像と左目用放射線画像においてテキストボックスＢＲ，ＢＬの周囲１０ｍｍの３次元視差画像領域ＡＲ，ＡＬに対して、図６に矢印で示すように、テキストボックスＢＲ，ＢＬに接する３次元視差画像領域ＡＲ，ＡＬのコントラストが０になるようにコントラストを徐々に小さくしてもよい。 Further, as shown in FIG. 5, in the right-eye radiographic image and the left-eye radiographic image, the text box BR as shown by an arrow in FIG. , The contrast may be gradually reduced so that the contrast of the three-dimensional parallax image areas AR and AL in contact with BL becomes zero.
具体的には３次元視差画像領域ＡＲ，ＡＬにおいてそれぞれ図６の矢印方向にコントラストが小さくなるように１画素毎の濃度値を変換する。例えば、Ａ（Ｌ）をテキストボックスからの距離（Ｌ）の関数、Ｄを変換前の画素値、Ｄ’を変換後の画素値としたとき、
Ｄ'（ｘ,ｙ）＝Ａ（Ｌ）×Ｄ（ｘ,ｙ）
のようにすればよい。なおＡ（Ｌ）は例えば図７に示すグラフで示すことができる。 Specifically, the density value for each pixel is converted so that the contrast in the three-dimensional parallax image areas AR and AL decreases in the direction of the arrow in FIG. For example, when A (L) is a function of a distance (L) from a text box, D is a pixel value before conversion, and D ′ is a pixel value after conversion,
D ′ (x, y) = A (L) × D (x, y)
Like this. A (L) can be represented by a graph shown in FIG. 7, for example.
このようにテキストボックスＢＲ，ＢＬの周囲１０ｍｍの３次元視差画像領域ＡＲ，ＡＬのコントラストが０になるようにコントラストを小さくする場合には、３次元表示領域と２次元表示領域との境界部分がなくなるので３次元表示領域から２次元表示領域へ急激に切り替わることがなく、観察者が表示部を観察するときの疲労を低減することができる。 When the contrast is reduced so that the contrast of the three-dimensional parallax image areas AR and AL of 10 mm around the text boxes BR and BL becomes 0 in this way, the boundary portion between the three-dimensional display area and the two-dimensional display area is As a result, there is no sudden switching from the three-dimensional display area to the two-dimensional display area, and fatigue when the observer observes the display unit can be reduced.
なお上述した実施形態は、本発明の立体視画像表示装置の一実施形態を乳房画像撮影表示システムに適用したものであるが、本発明の被写体としては乳房に限らず、たとえば、胸部や頭部などを撮影する放射線画像撮影表示システムにも本発明を適用することができる。
  In the above-described embodiment, one embodiment of the stereoscopic image display device of the present invention is applied to a breast image capturing and displaying system. However, the subject of the present invention is not limited to the breast, and for example, a chest or a head. The present invention can also be applied to a radiographic imaging display system that captures images such as.

Claims (6)

  1. 　互いに異なる撮影方向からの被写体の撮影によって取得された前記撮影方向毎の視差画像を用いて立体視可能な立体視画像を表示する表示部と、
    　２次元表示ボックスを前記表示部に２次元表示させる２次元表示ボックス表示制御手段と、
    　該２次元表示ボックス表示制御手段により２次元表示された前記２次元表示ボックスに隣接する一部領域の前記立体視画像において、前記２次元表示ボックスに近づくほどコントラストを徐々に小さくする画像処理手段とを備えていることを特徴とする立体視画像表示装置。     A display unit that displays a stereoscopic image that can be stereoscopically viewed using a parallax image for each photographing direction acquired by photographing subjects from different photographing directions;
    Two-dimensional display box display control means for two-dimensionally displaying a two-dimensional display box on the display unit;
    Image processing means for gradually reducing the contrast as it approaches the two-dimensional display box in the stereoscopic image of a partial region adjacent to the two-dimensional display box displayed two-dimensionally by the two-dimensional display box display control means; A stereoscopic image display device comprising:
  2. 　前記画像処理手段が、前記２次元表示ボックスに接する前記立体視画像の一部領域のコントラストが０になるように前記コントラストを小さくするものであることを特徴とする請求項１に記載の立体視画像表示装置。 2. The stereoscopic vision according to claim 1, wherein the image processing means reduces the contrast so that a contrast of a partial area of the stereoscopic image in contact with the two-dimensional display box becomes zero. Image display device.
  3. 　前記視差画像が被写体への放射線の照射によって放射線画像検出器により検出された放射線画像であり、前記立体視画像が該放射線画像に基づいて前記表示部に表示される医療画像であることを特徴とする請求項１又は２記載の立体視画像表示装置。 The parallax image is a radiation image detected by a radiation image detector by irradiating a subject with radiation, and the stereoscopic image is a medical image displayed on the display unit based on the radiation image. The stereoscopic image display apparatus according to claim 1 or 2.
  4. 　互いに異なる撮影方向からの被写体の撮影によって取得された前記撮影方向毎の視差画像を用いて立体視可能な立体視画像を前記表示部に表示すると共に２次元表示ボックスを前記表示部に２次元表示し、
    　該２次元表示された前記２次元表示ボックスに隣接する一部領域の前記立体視画像において、前記２次元表示ボックスに近づくほどコントラストを徐々に小さくすることを特徴とする立体視画像表示方法。     A stereoscopic image that can be viewed stereoscopically is displayed on the display unit using a parallax image for each shooting direction acquired by shooting subjects from different shooting directions, and a two-dimensional display box is displayed on the display unit in a two-dimensional manner. And
    A stereoscopic image display method characterized in that, in the stereoscopic image of a partial area adjacent to the two-dimensional display box displayed two-dimensionally, the contrast is gradually decreased as the two-dimensional display box is approached.
  5. 　前記２次元表示ボックスに接する前記立体視画像の一部領域のコントラストが０になるように前記コントラストを小さくすることを特徴とする請求項４に記載の立体視画像表示方法。 5. The stereoscopic image display method according to claim 4, wherein the contrast is reduced so that a contrast of a partial region of the stereoscopic image in contact with the two-dimensional display box becomes zero.
  6. 　前記視差画像が被写体への放射線の照射によって放射線画像検出器により検出された放射線画像であり、
    該放射線画像に基づいた立体視画像である医療画像を前記表示部に表示することを特徴とする請求項４又は５記載の立体視画像表示方法。
          The parallax image is a radiation image detected by a radiation image detector by irradiating the subject with radiation,
    6. The stereoscopic image display method according to claim 4, wherein a medical image which is a stereoscopic image based on the radiation image is displayed on the display unit.
PCT/JP2011/005981 2010-10-28 2011-10-26 3d image display device and 3d image display method WO2012056692A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40780010P 2010-10-28 2010-10-28
US61/407,800 2010-10-28

Publications (1)

Publication Number Publication Date
WO2012056692A1 true WO2012056692A1 (en) 2012-05-03

Family

ID=45993438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/005981 WO2012056692A1 (en) 2010-10-28 2011-10-26 3d image display device and 3d image display method

Country Status (1)

Country Link
WO (1) WO2012056692A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0973049A (en) * 1995-06-29 1997-03-18 Canon Inc Image display method and image display device using the same
WO2006054518A1 (en) * 2004-11-18 2006-05-26 Pioneer Corporation 3d display device
JP2010193409A (en) * 2009-02-20 2010-09-02 Nikon Corp Image presentation system, image processing apparatus, program and image presentation method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0973049A (en) * 1995-06-29 1997-03-18 Canon Inc Image display method and image display device using the same
WO2006054518A1 (en) * 2004-11-18 2006-05-26 Pioneer Corporation 3d display device
JP2010193409A (en) * 2009-02-20 2010-09-02 Nikon Corp Image presentation system, image processing apparatus, program and image presentation method

Similar Documents

Publication Publication Date Title
JP2012073434A (en) Adjustment method of stereoscopic display and adjusting device used for the same, and stereoscopic image display method and display unit used for the same
WO2012108187A1 (en) Device and method for generation of image for 3d vision, and programme
WO2012081244A1 (en) Display device
WO2012056695A1 (en) Three-dimensional image display device, method, and program
JP5695524B2 (en) Stereoscopic image display apparatus and method, and program
WO2012056692A1 (en) 3d image display device and 3d image display method
JP5658818B2 (en) Radiation breast image display method, radiation breast image display apparatus and program
JP2012068610A (en) Stereoscopic vision image display device, radiation image photographing and display system and stereoscopic vision image display method
WO2012056722A1 (en) Three-dimensional image display device, method, and program
WO2012043480A1 (en) Stereovision image display method and stereovision image display device
WO2012132379A1 (en) Image display device, display control device, display control method and programme
WO2012056677A1 (en) Three-dimensional image display device
WO2012043547A1 (en) Stereoscopic image display method and stereoscopic image display device
WO2012056679A1 (en) 3d image display system and 3d image display device
WO2012056718A1 (en) Three-dimensional radiation image display device, method, and program
WO2012066753A1 (en) Stereoscopic image display method and device
WO2012132443A1 (en) Image display device
WO2012132320A1 (en) Stereoscopic image display apparatus and stereoscopic image display method
WO2012090470A1 (en) Three-dimensional image display device and three-dimensional image display method
WO2012029705A1 (en) Device and method for delivering images
WO2012077319A1 (en) Stereovision image display method and apparatus therefor
JP2012178626A (en) Stereoscopic radiation image display method and device
JP2012110645A (en) Device and method for displaying stereoscopic image
WO2012132453A1 (en) Radiological breast-image display method, radiological breast-image display device, and programme
JP2012024516A (en) Radiological image radiographing and displaying method and apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11835837

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11835837

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP