JPH01204190A - Stereoscopic image display device - Google Patents

Stereoscopic image display device

Info

Publication number
JPH01204190A
JPH01204190A JP2649188A JP2649188A JPH01204190A JP H01204190 A JPH01204190 A JP H01204190A JP 2649188 A JP2649188 A JP 2649188A JP 2649188 A JP2649188 A JP 2649188A JP H01204190 A JPH01204190 A JP H01204190A
Authority
JP
Japan
Prior art keywords
image
edge
projection image
display device
tomographic
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP2649188A
Other languages
Japanese (ja)
Inventor
Hiroko Shiotani
塩谷 裕子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Canon Medical Systems Corp
Original Assignee
Toshiba Corp
Toshiba Medical Systems Engineering Co Ltd
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 Toshiba Corp, Toshiba Medical Systems Engineering Co Ltd filed Critical Toshiba Corp
Priority to JP2649188A priority Critical patent/JPH01204190A/en
Priority to DE19893903838 priority patent/DE3903838A1/en
Publication of JPH01204190A publication Critical patent/JPH01204190A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To clearly display a projection image by being equipped with an edge emphasizing means to emphasize the edge of respective sectional images stored in an image storing part, and emphasizing the outline of the projection image. CONSTITUTION:Each sectional image data stored in an image storing part 1 are transmitted to an edge emphasizing means 2 connected to a rear step and the edge is emphasized to respective sectional images. Based on the edge emphasized sectional image, a projection image is formed based on a line of sight position and line of sight direction inputted in a projection image preparing part 3 and the projection image is displayed through a projection image storing part 4 on a displaying part 5. Thus, the projection image, in which an edge part is clear, can be displayed.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野〉 本発明は複数からなる断層画像データに基き任意の投影
像を作成し表示する立体画像表示装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a stereoscopic image display device that creates and displays an arbitrary projection image based on a plurality of pieces of tomographic image data.

(従来の技術) 画像処理における立体画像表示方法には、断面変換法2
表面表示法、マルチフレーム表示法。
(Prior art) A three-dimensional image display method in image processing includes cross-section conversion method 2.
Surface display method, multi-frame display method.

再投影表示法等が知られており、表示対象に応じて適宜
最適な方法が選択される。これらの中で再投影表示法は
内部構成を表現する場合に有効な表示法である。この再
投影表示法とは、CT多多層層面ら得られた三次元状の
ボクセルデータを観察者の視線方向に積分することによ
り作成した投影像を、眼の視差を利用してステレオペア
表示、アニメーション表示等を行うことにより投影像を
立体的に表示するものである。
Reprojection display methods and the like are known, and the optimal method is selected as appropriate depending on the display target. Among these, the reprojection display method is an effective display method when expressing the internal structure. This reprojection display method uses the parallax of the eyes to display a projected image in stereo pairs, which is created by integrating three-dimensional voxel data obtained from a CT multilayer surface in the direction of the observer's line of sight. The projected image is displayed three-dimensionally by performing animation display or the like.

ところで前記再投影表示法による投影像の作成方法は、
X線CT装置、MRI装置等により@影した断層像を躍
彰位置に従って第5図(a)に示すように三次元的に積
み上げ、これに補間を施すことで三次元状すなわち立体
的な画像データを再構成し、これを視線方向に積分する
ことで得ている。
By the way, the method of creating a projected image using the reprojection display method is as follows:
The tomographic images captured by an X-ray CT device, MRI device, etc. are stacked three-dimensionally according to the jumping position as shown in Figure 5 (a), and interpolation is applied to the images to create a three-dimensional image. It is obtained by reconstructing the data and integrating it in the line-of-sight direction.

(発明が解決しようとする課題) ところが、第5図(a)に示す断層像Dl乃至DNの各
断層像10にはそれぞれ同図(b)のように画素値の偏
移が見られないが、上述したような従来の作成方法によ
って同図(C)に示すような投影像11が作成された段
階では、その輪郭すなわちエツジ部分が不明瞭となる。
(Problem to be Solved by the Invention) However, although no shift in pixel values is observed in each of the tomographic images Dl to DN shown in FIG. 5(a), as shown in FIG. 5(b), When the projection image 11 as shown in FIG. 2C is created by the conventional creation method as described above, its contour, that is, the edge portion becomes unclear.

従って、同図(d>に示すように投影像のエツジ部分の
画素値が低下してぼやけたものとなる結果、その細部が
把握しにくいという問題があった。
Therefore, as shown in FIG. 3(d), the pixel values at the edge portions of the projected image decrease and become blurred, resulting in a problem that it is difficult to grasp the details.

そこで本発明は投影像を明瞭に表示できる立体画像表示
装置の提供を目的とする。
Therefore, an object of the present invention is to provide a stereoscopic image display device that can clearly display projected images.

[発明の構成1 (課題を解決するための手段) 上)ホした目的を達成するための本発明の構成は、複数
の断層画像データを記憶する画像記憶部を備え、この断
層画像データに基き任意の投影像を作成し表示する立体
画像表示装置において、前記画像記憶部に記憶された各
断層画像のエツジ強調を行うエツジ強調手段を具備して
いる。
[Structure 1 of the Invention (Means for Solving the Problems) A structure of the present invention for achieving the above object is provided with an image storage section that stores a plurality of tomographic image data, and a method based on the tomographic image data. A stereoscopic image display device for creating and displaying an arbitrary projection image includes an edge emphasis means for performing edge emphasis on each tomographic image stored in the image storage section.

(作 用) 上記構成を備えた本発明の作用は、投影像の輪郭すなわ
ちエツジ部分を強調するようにして該投影像を明瞭に表
示できるようにしている。
(Function) The function of the present invention having the above-mentioned configuration is to emphasize the outline or edge portion of the projected image so that the projected image can be clearly displayed.

(実施例) 以下本発明の立体画像表示装置について図面を参照して
説明する。
(Example) A stereoscopic image display device of the present invention will be described below with reference to the drawings.

第1図は一実施例立体画像表示装置の構成ブロック図で
ある。
FIG. 1 is a block diagram of a three-dimensional image display device according to an embodiment.

同図において立体画像表示装置は、例えばX線C″r装
置、MRI装置等によって得られた複数枚のCT多断層
画像データを二次元データとして記憶する画像記憶部1
と、この画像記憶部1に記憶された各断層画像のエツジ
強調を行うエツジ強調手段2と、図示しない入力部より
入力される視点位置データ及び視線方向データに基き前
記エツジ強調の施された各断層画像に基づいて投影像を
作成する投影像作成部3と、この投影像作成部3で作成
された投影像を一時的に記憶する投影像記憶部4と、こ
の投影像記憶部4に記憶される投影像を表示するCRT
デイスプレィ等からなる表示部5とを備えて構成されて
いる。
In the figure, the stereoscopic image display device includes an image storage unit 1 that stores a plurality of CT multi-sectional image data obtained by, for example, an X-ray C″r device, an MRI device, etc. as two-dimensional data.
, an edge enhancement means 2 that performs edge enhancement of each tomographic image stored in the image storage unit 1, and an edge enhancement unit 2 that performs edge enhancement of each tomographic image stored in the image storage unit 1; A projection image creation section 3 that creates a projection image based on a tomographic image; a projection image storage section 4 that temporarily stores the projection image created by the projection image creation section 3; and a projection image storage section 4 that stores the projection image created in the projection image storage section 4. CRT that displays the projected image
The display unit 5 includes a display unit 5 such as a display.

前記エツジ強調手段2は、本実施例においてはエツジ強
調フィルタで構成している。従って、このエツジ強調フ
ィルタで各断層像のエツジを検出し、該エツジの強調を
行うようにしている。
In this embodiment, the edge emphasizing means 2 is constituted by an edge emphasizing filter. Therefore, the edges of each tomographic image are detected using this edge enhancement filter, and the edges are enhanced.

以上のように構成された立体画像表示装置の作用、効果
について説明する。尚、前記画像記憶部1には第2図(
a>、(b)に示すように予め複数枚の断層画像データ
D1乃至DNが記憶されているものとする。尚、同図(
b)に9で示すものは各断層画像データ中の断層像であ
る。
The functions and effects of the stereoscopic image display device configured as above will be explained. It should be noted that the image storage unit 1 is stored in the image storage unit 1 as shown in FIG.
It is assumed that a plurality of pieces of tomographic image data D1 to DN are stored in advance as shown in a> and (b). In addition, the same figure (
What is indicated by 9 in b) is a tomographic image in each tomographic image data.

まず、画像記憶部1に記憶されている前記断層画像デー
タD1乃至DNが俊段に接続されているエツジ強調手段
2に送信されると、ここで各断層像9にエツジ強調が施
される。すなわち、この時の第2図(C)に示す各断層
画像データD1乃至DNの各断層像9′は、同図(d>
に示すようにそのエツジ部分が強調される。
First, when the tomographic image data D1 to DN stored in the image storage section 1 are transmitted to the edge enhancement means 2 which is connected in a connected manner, each tomographic image 9 is subjected to edge enhancement. That is, each tomographic image 9' of each tomographic image data D1 to DN shown in FIG. 2(C) at this time is
The edges are emphasized as shown in .

そして、このようにエツジ強調がされた断層像9′を基
に、投影像作成部3において入力される視点位置及び視
線方向とに基いて同図(e)中8で示すような投影像が
作成され、投影像記憶部4を介して表示部5上に該投影
像8が表示される。
Based on the tomographic image 9' that has been edge-enhanced in this way, a projected image as shown at 8 in FIG. The projected image 8 is created and displayed on the display unit 5 via the projected image storage unit 4.

以上のようなエツジ強調を行うと、第2図(f)に示す
ように投影像のエツジ部分の画素値を従来のものと比較
して高い値とすることができる。このことから、エツジ
部分が明瞭な投影像を表示できることになり、細部の把
握を容易とすることができる。従って、例えば医用画像
診断機器に適用した際には該診断能を向上させることが
でき、被検体に対して効果的な治療を行えるようになる
By performing edge enhancement as described above, the pixel value of the edge portion of the projected image can be made higher than that of the conventional method, as shown in FIG. 2(f). As a result, a projected image with clear edge portions can be displayed, making it easier to grasp details. Therefore, when applied to medical image diagnostic equipment, for example, the diagnostic performance can be improved, and effective treatment can be performed on the subject.

尚、前記投影像作成部3における投影像の作成方法とし
ては再投影表示法の他、断面変換法2表面表示法、マル
チフレーム法等の各種の方法が適用できる。
In addition to the reprojection display method, various methods such as the cross section conversion method, the two-surface display method, and the multi-frame method can be applied to the projection image creation method in the projection image creation section 3.

第3図は本発明の立体画像表示装はの他の実施例を示す
ものであり、第4図(a)乃至(d>は第3図に示す装
置において断面像にエツジ強調を行う際の説明図である
。尚、第3図において第1図に示すものと同等のものに
ついては同一の符号を付してその構成説明を省略する。
FIG. 3 shows another embodiment of the stereoscopic image display device of the present invention, and FIGS. 4(a) to 4(d) show how the device shown in FIG. FIG. 3 is an explanatory diagram. In FIG. 3, the same components as those shown in FIG.

同図に示す立体画像表示装置と第1図に示す立体画像表
示装置との相違点は、前記画像記憶部1とエツジ強調手
段2どの間に三次元像再構成部6を配置した点である。
The difference between the stereoscopic image display device shown in the figure and the stereoscopic image display device shown in FIG. .

前記三次元像再構成部6は、断層画像データを基に例え
ば線形補間等の方法で各断層画像データ間を補間して三
次元像を作成するものでおる。
The three-dimensional image reconstruction unit 6 creates a three-dimensional image by interpolating between each tomographic image data based on the tomographic image data using a method such as linear interpolation.

すなわら、画像記憶部1には第4図(a)に示すような
断層画像データ12乃至14が記憶されているとすると
、三次元像再構成部6において断層画像データ12.断
層画像データ13の間に対して12’、12″で示す断
層画像データを補間し、断層画像データ13.断層画像
データ14の間に対して同様に13’、13″で示す断
層画像データを補間する。そして、このように補間され
た後の断層画像データに基づいて三次元画像を再構成す
る。
That is, assuming that the image storage unit 1 stores tomographic image data 12 to 14 as shown in FIG. 4(a), the three-dimensional image reconstruction unit 6 stores tomographic image data 12 to 14. The tomographic image data indicated by 12' and 12'' are interpolated between the tomographic image data 13 and the tomographic image data indicated by 13' and 13'' are similarly interpolated between the tomographic image data 13 and 14. Interpolate. A three-dimensional image is then reconstructed based on the tomographic image data interpolated in this way.

後段に接続されたエツジ強調手段2では、前段の三次元
像再構成部6で作成された第4図(C)に示すような三
次元画像の各断層像画像データ12.12’ 、12”
 、・・・、14の断層像(図示しない〉それぞれにエ
ツジ強調を施す。
The edge enhancement means 2 connected at the latter stage collects tomographic image data 12, 12', 12'' of the three-dimensional image as shown in FIG. 4(C) created by the three-dimensional image reconstruction unit 6 at the former stage.
, . . . Edge enhancement is applied to each of the 14 tomographic images (not shown).

投影像作成部3では前述したエツジ強調された三次元像
を基に投影像を作成する。
The projection image creation section 3 creates a projection image based on the edge-enhanced three-dimensional image described above.

そして、このようにして作成された投影像は投影像記憶
部4に一旦記”lされた後、表示部5上に表示される。
The projection image created in this manner is once recorded in the projection image storage section 4 and then displayed on the display section 5.

このような構成とした立体画像表示装置でおっても、前
述と同様の効果を得ることができる。
Even with a stereoscopic image display device having such a configuration, the same effects as described above can be obtained.

尚、本発明は上述した各図示実施例に限定されるもので
はなく、その要旨の範囲内で様々に変形実施が可能であ
ることを付記する。
It should be noted that the present invention is not limited to the illustrated embodiments described above, and that various modifications can be made within the scope of the gist.

[発明の効果] 以上詳述した本発明によれば、投影像を明瞭に表示でき
る立体画像表示装置の提供ができる。
[Effects of the Invention] According to the present invention described in detail above, it is possible to provide a stereoscopic image display device that can clearly display a projected image.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の立体画像表示装置の一実施例構成を示
す構成ブロック図、第2図(a)乃至(f)は断層像に
エツジ強調を行う際の説明図、第3図は本発明の立体画
像表示装置の他の構成例を示す構成ブロック図、第4図
(a)乃至(C)は断層像にエツジ強調を行う際の説明
図、第5図(a)乃至(d)は従来の立体画像表示装置
における断層像の様子を示す説明図である。 1・・・画像記憶部、2・・・エツジ強調手段、Dl乃
至DN、12乃至14・・・断層画像データ。 代理人 弁理士 則  近  憲  佑同     近
   藤       猛(0)        (b
) (e) 第2図 第  3 @ +4  (b) +4(C) 第4図 I 第  5 図
FIG. 1 is a block diagram showing the configuration of an embodiment of the stereoscopic image display device of the present invention, FIGS. A configuration block diagram showing another configuration example of the stereoscopic image display device of the invention, FIGS. 4(a) to (C) are explanatory diagrams when edge enhancement is performed on a tomographic image, and FIGS. 5(a) to (d) FIG. 1 is an explanatory diagram showing a state of a tomographic image in a conventional stereoscopic image display device. DESCRIPTION OF SYMBOLS 1... Image storage unit, 2... Edge emphasis means, Dl to DN, 12 to 14... Tomographic image data. Agent Patent Attorney Nori Ken Yudo Kondo Takeshi Kondo (0) (b
) (e) Fig. 2 Fig. 3 @ +4 (b) +4 (C) Fig. 4 I Fig. 5

Claims (1)

【特許請求の範囲】[Claims] 複数の断層画像データを記憶する画像記憶部を備え、こ
の断層画像データに基き任意の投影像を作成し表示する
立体画像表示装置において、前記画像記憶部に記憶され
た各断層画像のエッジ強調を行うエッジ強調手段を具備
し、このエッジ強調後の断層像に基く前記投影像を表示
することを特徴とする立体画像表示装置。
In a stereoscopic image display device that includes an image storage unit that stores a plurality of tomographic image data and creates and displays an arbitrary projection image based on the tomographic image data, edge enhancement of each tomographic image stored in the image storage unit is provided. 1. A stereoscopic image display device, comprising: edge enhancement means for performing edge enhancement, and displaying the projected image based on the tomographic image after edge enhancement.
JP2649188A 1988-02-09 1988-02-09 Stereoscopic image display device Pending JPH01204190A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2649188A JPH01204190A (en) 1988-02-09 1988-02-09 Stereoscopic image display device
DE19893903838 DE3903838A1 (en) 1988-02-09 1989-02-09 Method and device for representing three-dimensional images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2649188A JPH01204190A (en) 1988-02-09 1988-02-09 Stereoscopic image display device

Publications (1)

Publication Number Publication Date
JPH01204190A true JPH01204190A (en) 1989-08-16

Family

ID=12194968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2649188A Pending JPH01204190A (en) 1988-02-09 1988-02-09 Stereoscopic image display device

Country Status (1)

Country Link
JP (1) JPH01204190A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08161530A (en) * 1994-12-09 1996-06-21 Olympus Optical Co Ltd Icon preparing method and frame preparing method for dynamic image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08161530A (en) * 1994-12-09 1996-06-21 Olympus Optical Co Ltd Icon preparing method and frame preparing method for dynamic image

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