JPH0644358A - Image display device - Google Patents

Abstract

PURPOSE:To provide the image display device which can display a three-dimensional scale together with a three-dimensional object image to recognize the size of the three-dimensional object displayed at the time of three-dimensional image processing CONSTITUTION:Prescribed three-dimensional data 22 and the display conditions of the three-dimensional scale inputted from a parameter input means 23 such as the shape of the scale, display position, moving distance, rotating angle, the unit and interval of scaling, the kind of an interval display symbol and color or the like are inputted to a conversion processing means 24. The conversion processing means 24 converts the prescribed three-dimensional scale data 22 based on the display conditions of the three-dimensional scale and obtains converted three-dimensional scale data. The pixel size of one piece of data in the boxel of the converted three-dimensional scale data 22 is made coincident with the pixel size of one piece of data in the boxel of three-dimensional data 21 by a match processing means 25 so that the scale of the converted three-dimensional scale data can be coincident with that of the three- dimensional data 21. Then, the three-dimensional data 21 and the output of the match processing means 25 are synthesized by a three-dimensional data synthesizing means 26, and the three-dimensional scale is displayed together with the three-dimensional object by a three-dimensional image preparing means 27.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to three-dimensional image processing,
In particular, it relates to a three-dimensional scale display for knowing the size of the three-dimensional image displayed on the screen.

[0002]

2. Description of the Related Art An object whose size is known, or the size of an image displayed on the screen together with such an object can be roughly estimated by visual inspection, but the size of the object is unknown. If you want to know the size of the image of the object, or if you want to know the exact size of an object that knows the normal size, a scale (image) is displayed at an appropriate position on the screen together with the image of the object. It is convenient if it is done. Conventionally, there is a two-dimensional scale as such a scale, which is displayed on a screen together with a two-dimensional image.

However, when trying to know the size of the three-dimensional image in the three-dimensional image processing, the length in the depth direction cannot be known by the two-dimensional scale. In that case, the scale calculation on the slice plane and the slice interval are performed. It was calculated manually from the table position.

[0004]

However, the above-described calculation of the distance (size) of a three-dimensional image by manual calculation requires time and effort and is not accurate.
For example, when two objects are displayed, there is a problem in that only the apparent size can be calculated even if the object in the back is actually larger than the previous object.

The present invention has been made in view of the above inconvenience, and an image display capable of displaying together with a three-dimensional object image a three-dimensional scale for knowing the size of the three-dimensional object image displayed in the three-dimensional image processing. The purpose is to provide a device.

[0006]

In order to achieve the above object, the image display device of the present invention comprises a first three-dimensional data corresponding to a first image and a second tertiary data corresponding to a second image. A second three-dimensional image display apparatus comprising: a synthesizing unit that synthesizes original data, a three-dimensional image creating unit that creates a three-dimensional image from the output of the synthesizing unit, and a display unit that displays the three-dimensional image. Input means for inputting display conditions of data, conversion processing means for converting predetermined second three-dimensional data based on the input display conditions, second converted three-dimensional data and first three-dimensional data Corresponding the data, the pixel size of one data in the voxel of the first three-dimensional data corresponding to the converted second three-dimensional and one data in the voxel of the converted second three-dimensional data are Match the pixel size you have Matching processing means, inputting the output of the matching processing means to the synthesizing means, and displaying the second image together with the first three-dimensional image on the display means via the three-dimensional image creating means. And

In the image display device according to the embodiment, the second three-dimensional data is three-dimensional scale data, the second image is three-dimensional scale, and the display condition is three-dimensional scale display condition. Is characterized by. In addition,
In the image display device, the three-dimensional scale display conditions are the shape of the three-dimensional scale, the display position of the three-dimensional scale, the moving distance, the rotation angle, the scale unit and scale interval of the three-dimensional scale, the type of the interval display symbol, and the color. It is desirable to include any or all of them.

[0008]

With the above construction, the image display apparatus of the present invention is based on the display condition in which the display condition of the second three-dimensional data is inputted by the input means and the predetermined second three-dimensional data is inputted by the conversion processing means. In the voxel of the first three-dimensional data corresponding to the converted second three-dimensional data by matching the converted second three-dimensional data with the first three-dimensional data. The pixel size of one data is matched with the pixel size of one data in the voxel of the converted second three-dimensional data. Then, the output of the matching processing means is input to the synthesizing means, and is displayed as a three-dimensional scale together with the first three-dimensional image on the display means via the three-dimensional image creating means.

In the embodiment, the second three-dimensional data is the three-dimensional scale data, the second image is the three-dimensional scale, the shape of the three-dimensional scale, the display position of the three-dimensional scale, the moving distance, the rotation angle, By inputting any or all of the scale unit and scale interval of the three-dimensional scale, the type of the interval display symbol, and the color as the three-dimensional scale display condition with the input means, the desired shape, the scale unit of the scale and the scale interval, The distance (length) can be measured by moving and displaying the three-dimensional scale of the type and color of the interval display symbol on the portion (position) of the object image to be measured.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the hardware construction of an embodiment of the image display device of the present invention. In FIG. 1, 1 is the entire image display apparatus, 2 is a CPU as a control unit for controlling the entire image processing apparatus, 3 is a communication interface for exchanging data with an external device via a network, and 4 is a CRT. A console for inputting commands and parameters necessary for operating the image processing apparatus 1, including a keyboard, a pointing device, etc., 5 designates a specific position of the displayed three-dimensional image, and its position, direction, and movement amount ( A pointing device such as a mouse capable of inputting a distance), 5 is an internal memory, 7 is firmware, 8 is an image storage device, and 9 is a display. The firmware 7 includes conversion processing means and matching processing means, which will be described later, and executes those means.

FIG. 2 is a schematic block diagram of image processing of the image display device of the present invention, and FIG. 3 is a flowchart showing the operation thereof. Further, FIG. 4 shows a three-dimensional scale 32 displayed on the display 9 together with the object image 31.
5 is an example of the shape of a three-dimensional scale prepared in advance in the system (in the firmware 7 of the image processing apparatus 1), which is I-shaped, + -shaped, L-shaped, Shape examples such as T-shape, * -shape, and inverted Y-shape are shown. Further, each scale can be rotated n times in the three-dimensional space, moved in parallel, changed in length, changed in crossing angle, and changed in scale. Further, by operating the mouse 5, it is possible to move only the scale, move only the object (three-dimensional image), simultaneously move the scale and the object, and the like. The scale can be displayed by the matching processing means described later in consideration of the pixel size of voxel data (three-dimensional data 21) composed of slice images (see step 36).

The flow of processing and the operation of each component of the image display apparatus according to the present invention will be described below with reference to the block diagram of FIG. 2 and the flowchart of FIG. In this case, for explanation purposes, prior to performing the following steps, the shape of the scale,
Standard display conditions of the three-dimensional scale such as display position, movement distance, rotation angle, scale unit and scale interval, scale display symbol type, color, etc. are displayed from the firmware 7 to a display condition table (not shown) in the internal memory 5. Shall be written in. Also, as a standard display condition of the three-dimensional scale,
In order to make it easy to check the scale of the three-dimensional scale, the colors for displaying the three-dimensional image and the three-dimensional scale in different colors are defined, and even when it is hidden behind the three-dimensional scale three-dimensional image, A display method for color-coding a three-dimensional scale or displaying by dividing the scale shape (for example, dotted line, broken line, etc.) is defined. [Steps 31 to 33]

In FIG. 2, the three-dimensional data 21 is composed of two-dimensional slice data (not shown) stored in the image storage device 6 (step 31) and is created as a three-dimensional image by the three-dimensional image creating means. (Step 3
2) is displayed on the display 9 (step 3)
3). In this case, in the embodiment, various commands are displayed on the display 9 along with an image, and a "scale" command is displayed as one of the commands. [Step 34]

When it is determined whether or not the size of the three-dimensional object image displayed on the display 9 is to be measured and the size of the three-dimensional object image is to be measured, the scale shape, display position, movement Display conditions such as distance, rotation angle, scale unit and scale interval of scale, type of interval display symbol, color and the like are input from an input means such as a pointing device such as the mouse 5 or a keyboard, and steps 35 to 37 are executed to execute step 32. Then, in step 33, the three-dimensional scale is displayed together with the three-dimensional object image. When it is desired to change the display condition of the scale, the display condition to be changed is input again in this step, and steps 35 to 37 and 32 to 34 are repeated. In the embodiment, the start of the display condition input for displaying the scale and the display condition input for changing the scale display (that is, determining whether or not to measure the size of the three-dimensional object image) is It depends on whether or not the "scale" command displayed in step 33 is specified.

When the size of the three-dimensional object image is not measured, or when the three-dimensional scale display condition is not changed when the three-dimensional scale is displayed (that is, when the "scale" command is not specified) Executes step 38 (an example of the input operation of the display condition of the three-dimensional scale by this step will be described later in the description of FIGS. 8 and 9).
● [Step 35]

If the display conditions of the three-dimensional scale stored in the display condition table of the internal memory 5 are different from the input display conditions, the conversion processing means 24 gives priority to the display conditions input for the different display conditions. The display condition table of the internal memory 5 is updated according to the display condition.
Then, the three-dimensional scale data 21 is converted based on the display condition, and the converted three-dimensional scale data (hereinafter, referred to as three-dimensional scale data 22 ') is created. [Step 36]

At the stage of step 35, the scales of the three-dimensional scale data 22 'and the three-dimensional data 21 created by the conversion processing means 24 do not always match.
Therefore, the 3D scale data 22 'and the 3D data 2
In order to match the scale of 1, the matching processing means 25 associates the three-dimensional scale data 22 ′ with the three-dimensional data 21, and one data in the voxel of the three-dimensional data 21 corresponding to the three-dimensional scale data 22 ′ has. The pixel size and the pixel size of one data in the voxel of the three-dimensional scale data 22 'are made to coincide with each other, and the three-dimensional data 21 whose scale is matched with the three-dimensional data 21 is created. By this processing, the distance (length) of the three-dimensional object image displayed on the display 9 can be accurately known using the three-dimensional scale. [Step 37]

The three-dimensional data synthesizing means 26 synthesizes the three-dimensional data 21 and the output of the matching processing means (three-dimensional scale data 22 'after the matching processing), and the process returns to step 32. The three-dimensional data synthesizing means 26 synthesizes two three-dimensional data by a usual three-dimensional data synthesizing method. [Step 38]

It is determined whether or not the next three-dimensional image is to be displayed. If the next three-dimensional image is to be displayed, the process returns to step 31, and new three-dimensional image data is constructed.
Repeat steps 2-37. When the next three-dimensional image is not displayed, the image display ends.

FIG. 6 is an explanatory diagram of an example of measuring the size of the object by the three-dimensional scale when the object and the three-dimensional scale do not intersect. The case where the object and the three-dimensional scale do not intersect means that the three-dimensional scale 6 is applied so as to apply an object difference when trying to measure the diameter and the depth of the concave portion 62 of the object 61 shown in FIG.
3 is a case where the measurement can be performed by moving 3 and a case where the measurement can be performed by applying a three-dimensional scale 63 to the outside of the object surface.

FIG. 7 is an explanatory view of another example of measuring the size of the object by the three-dimensional scale when the object and the three-dimensional scale intersect. The case where the object intersects with the three-dimensional scale means that when measuring the inside of the object 71 shown in FIG.
This is a case where the center coordinates of the three-dimensional scale 73 are positioned inside the object 71 for measurement.

FIG. 8 shows an example of the scale parameter menu displayed on the display. In FIG. 8, input items are limited to scale units, scale intervals, and center coordinates (X, Y) for explanation, and other display conditions ( For example, the display color of the three-dimensional scale, etc.) is set as standard. In step 34 of FIG. 3, clicking the “scale” command on the display 9 with the mouse 5 causes the scale parameter menu 80 to be displayed on the display. The operator sets the scale interval and center coordinates (X, Y) based on the display items of the scale parameter menu 80, and displays the scale on the display 9. The setting (parameter input) can be performed by clicking an item of the scale parameter menu 80 displayed on the display 9 with the mouse 5 or by inputting a value from the keyboard of the console 4.

FIG. 9 is a flow chart showing an example of the input operation of the display conditions of the three-dimensional scale in step 34 described above. Hereinafter, based on the scale parameter menu of FIG. 8, an example of the input operation of the display condition of the three-dimensional scale will be described with reference to FIG. ● [Step 91] Input scale units

Select one of the scale units 81 and 81 'of the scale of the parameter menu 80 by selecting the scale unit. When the scale unit 81 is selected, the scale is mm
The unit is (millimeters), and when the scale unit 81 'is selected, the scale is in inches. [Step 92] Input of scale interval

Since the standard-set graduation interval is displayed in the graduation-interval input portion 82, when it is desired to change the standard-set graduation interval, a value (1≤n
≦ 10; n is an integer). [Step 93] Input of center coordinates (X, Y, Z)

Input portion 8 of center coordinates (X, Y, Z)
Coordinate value of the coordinate center position of the scale displayed on 3, 84, 84 '(1 ≤ X, Y, Z ≤ 256; X, Y, Z are integers)
Is input from the keyboard on the console 4. [Steps 94, 95] Reset and display of three-dimensional scale

When the execution column 87 is clicked, the three-dimensional scale is displayed on the display 9 together with the three-dimensional image of the object. If the operator does not desire the displayed three-dimensional scale, he or she can click the cancel column 85 to reset the scale parameter menu 80, and the operator can reset the necessary items. In this case, the displayed three-dimensional scale is erased. When the execution column 87 is clicked after resetting, the three-dimensional scale is displayed under the reset display conditions. [Step 96] Moving the three-dimensional scale

If the user wants to move the three-dimensional scale, he / she can move it up / down / left / right by clicking the movement instruction fields 88, 88 'with the mouse 5. To move downward, click on the move instruction field 88, to move up, click on the move instruction field 88 ', and to move left, click the left mouse button and click to move right. In that case, press the right mouse button and click. [Steps 97, 98] Image update

Display 9 after displaying the three-dimensional scale
When the "update" command among the commands displayed above is clicked with the mouse 5, the updated images are continuously displayed.

In the above operation example, the central coordinates (X, Y,
The coordinate value of (Z) was input from the scale parameter menu, but the present invention is not limited to this. For example, the cursor is moved to a desired coordinate position of the display corresponding to the movement of the mouse, and the coordinate value (X, (Y, Z) can be input, and movement and rotation of the three-dimensional scale can be designated by moving the cursor. Further, in the present embodiment, the conversion processing means and the matching processing means, which will be described later, are included in the firmware and are executed by the firmware, but the conversion processing means and the matching processing means are stored in the storage device as the program means. However, it may be configured to be built in the internal scale at the time of execution and executed by the CPU. In addition,
The three-dimensional scale of the present invention is not limited to image display, but also X-ray
It can be applied to a three-dimensional image display of a T apparatus, an MRI apparatus, or the like. The embodiment of the present invention has been described above.
It is needless to say that the present invention is not limited to the above embodiment and various modifications can be made.

[0031]

As described above, according to the present invention, the size of the object displayed as a three-dimensional image and the size of the part of the object and the distance between the objects can be directly calculated without the conventional manual calculation. Since the measurement can be performed, the measurement time is shortened and the burden on the operator is reduced. In addition, even for complex object images with concaves and holes, the size of the object,
It is possible to easily measure the diameter and depth of recesses and holes. Further, since the three-dimensional scale matches the pixel size of the three-dimensional data and one data in the voxel, the accuracy of the length (distance) is higher than that of the conventional manual calculation.

[Brief description of drawings]

FIG. 1 is a block diagram showing a hardware configuration of an embodiment of an image display device of the present invention.

FIG. 2 is a schematic block diagram of image processing of the image display device of FIG.

FIG. 3 is a flowchart showing an operation of the image display device of FIG.

FIG. 4 is a display example of a three-dimensional scale displayed on a display together with an object.

FIG. 5 is an example of a shape of a three-dimensional scale prepared in the system.

FIG. 6 is an explanatory diagram of an example of measuring the size of an object using a three-dimensional scale.

FIG. 7 is an explanatory diagram of another example of measuring the size of an object using a three-dimensional scale.

FIG. 8 is an example of a scale parameter menu displayed on the display.

FIG. 9 is a flowchart showing an example of an input operation of display conditions of a three-dimensional scale.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image processing apparatus 5 Pointing device (input means) 9 Display (display means) 21 Three-dimensional data (first three-dimensional data) 22 Three-dimensional scale data (second three-dimensional data) 24 Conversion processing means 25 Matching processing means 26 three-dimensional data synthesizing means 27 three-dimensional image creating means

Claims (3)

[Claims] 1. A synthesizing unit for synthesizing first three-dimensional data corresponding to a first image and second three-dimensional data corresponding to a second image, and a three-dimensional image is created from an output of the synthesizing unit. In an image display device having a three-dimensional image creating unit for displaying the three-dimensional image and an input unit for inputting a display condition of the second three-dimensional data, and a predetermined second three-dimensional data. The conversion processing means for converting based on the input display condition, the converted second three-dimensional data and the first three-dimensional data are made to correspond to each other to correspond to the converted second three-dimensional data. And a matching processing unit for matching the pixel size of one data in the voxel of the first three-dimensional data with the pixel size of one data in the voxel of the converted second three-dimensional data. The output of the matching processing means An image display device characterized by inputting to a synthesizing means and displaying a second image together with a first three-dimensional image on the display means via the three-dimensional image creating means. 2. The image display device according to claim 1,
An image display device, wherein the second three-dimensional data is three-dimensional scale data, the second image is three-dimensional scale, and the display condition is three-dimensional scale display condition. 3. The image display device according to claim 2,
The three-dimensional scale display condition includes any or all of the three-dimensional scale shape, the three-dimensional scale display position, movement distance, rotation angle, three-dimensional scale scale unit and scale interval, interval display symbol type, and color. An image display device characterized by the above.