JPH07249112A - Three-dimensional display processing method and three-dimensional display processor - Google Patents

Abstract

PURPOSE:To provide a three-dimensional display processing method and a three- dimensional display processor capable of highly efficient three-dimensional display processing. CONSTITUTION:The three-dimensional display processor is provided with an operation means 3 setting the threshold of picture data in a range to be displayed by using the histogram of picture data and a three-dimensional processing means 2 displaying the historgram of picture data which is to three- dimensionally be displayed, displaying a two-dimensional tomographic picture, displaying the range of the threshold which is set on the two-dimensional tomographic picture and generating a three-dimensional picture by using picture data in the range of the set threshold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a three-dimensional display processing method and a three-dimensional display processing device, and in particular, by knowing in what state a three-dimensional image is generated before generating a three-dimensional image. The present invention relates to a three-dimensional display processing method and a three-dimensional display processing device capable of efficiently generating a three-dimensional image.

[0002]

2. Description of the Related Art NMR imaging (MRI) and X-ray C
The object of measurement at T is usually a three-dimensional sample. Therefore, in order to obtain a tomographic image, it must be sliced by some method. As a method of this slicing, there is a method of taking in three-dimensional information by three-dimensional measurement, determining a slice plane by arithmetic processing, and obtaining a tomographic image of the plane. There is also a method of slicing at the time of measurement and detecting only signals in the layer to construct a two-dimensional image.

In NMR imaging, since the resonance frequency corresponds to the magnetic field strength, a magnetic field corresponding to that frequency can be obtained by exciting with a high frequency signal of a specific frequency while applying a gradient magnetic field whose magnetic field strength is inclined in a certain direction. Only the intensity portion, that is, a specific slice plane perpendicular to the above-mentioned direction is selectively excited, and the NMR data is collected from there.

In NMR, it is necessary to change the amount of phase coding and repeat the sequence of excitation and signal detection a large number of times. When repeating the excitation in this way, the next excitation is performed after waiting for the relaxation of the magnetization. It must be done and the repetition time cannot be shortened.

Therefore, conventionally, the relaxation waiting time within the repetition time is used to excite different slice planes and perform signal detection within one repetition time to reconstruct an image of a plurality of slice planes in one scan. The scanning method is being performed.
As a result, data of different slice planes can be obtained at one time in one scan time, which is performed by changing the phase coding amount and repeating the sequence of excitation and signal detection a number of times, thereby shortening the data acquisition time. .

In this way, two-dimensional (2D) or three
Rendering of surface model (3D image of surface only) and volumetric model (3D image of surface and interior) as 3D image based on image data obtained by 3D scan (Re
ndering), the threshold range (upper and lower limits) is set for the image data, and image processing is performed to display using the data within the threshold range. The object was displayed three-dimensionally.

In such a case, what kind of three-dimensional image can be obtained by setting what kind of threshold value is not known before generation of the three-dimensional display.
Three-dimensional image processing and display were performed by setting a threshold value determined by the experience and intuition of the operator.

Therefore, when the three-dimensional image displayed by the above operation is not the intended one, the threshold value is set again and the three-dimensional display process is re-executed.

[0009]

With the threshold setting based on the experience of the operator as described above, it is not possible to visually know what kind of three-dimensional image will be produced before the three-dimensional image is created. In some cases, the created three-dimensional image is different from the intended one. In such a case 3 again
There has been a problem that the process of extracting a desired display surface cannot be performed quickly because the three-dimensional image has to be created repeatedly.

The present invention has been made in view of the above points, and an object of the present invention is to realize a three-dimensional display processing method and a three-dimensional display processing apparatus capable of performing efficient three-dimensional display processing.

[0011]

The first means for solving the above-mentioned problems is to set a range of image data for generating a three-dimensional image by a threshold value, and set a range of the set threshold value. A three-dimensional display processing method is characterized in that one or more two-dimensional tomographic images are displayed for image data, and a three-dimensional image is created and displayed using image data within a set threshold range. .

A second means for solving the above problem is to display a histogram for image data, set a range of image data to be three-dimensionally displayed on the basis of this histogram by a threshold value, and set the range. A three-dimensional display processing method characterized in that a three-dimensional image is created and displayed using image data in a threshold range.

A third means for solving the above problem is to generate and display a histogram for image data, and set a range of image data to be three-dimensionally displayed based on the histogram by a threshold value. , Generating and displaying one or more two-dimensional tomographic images for the image data in the set threshold range, and generating and displaying a three-dimensional image using the image data in the set threshold range A three-dimensional display processing method characterized by the above.

A fourth means for solving the above problem is to set a range of image data for generating a three-dimensional image by a threshold value, and to display one or more two-dimensional tomographic images, It is characterized in that each area corresponding to the set threshold value range is displayed by color, and a three-dimensional image is created and displayed using image data in the set threshold value range. It is a dimensional display processing method.

Further, a fifth means for solving the above-mentioned problems is an operation means for setting a threshold value of image data in a range to be three-dimensionally displayed, and an image data to be three-dimensionally displayed.
A three-dimensional process for displaying a two-dimensional tomographic image, displaying a set threshold value range on a two-dimensional tomographic image, and creating a three-dimensional image using image data in the set threshold value range. A three-dimensional display processing device comprising:

A sixth means for solving the above-mentioned problems is a histogram display means for generating and displaying a histogram for image data, and a range of image data to be three-dimensionally displayed based on the generated histogram. A three-dimensional display comprising: an operating means set by a threshold value; and a three-dimensional image generating means for generating and displaying a three-dimensional image using image data in the set threshold range. It is a processing device.

Further, a seventh means for solving the above-mentioned problem is that a histogram display means for generating and displaying a histogram for image data and a range of image data to be three-dimensionally displayed based on the generated histogram are provided. Operation means set by a threshold value, two-dimensional tomographic image generation means for generating and displaying one or more two-dimensional tomographic images for image data in the set threshold value range, and set threshold value And a three-dimensional image generating means for generating and displaying a three-dimensional image using image data in the range.

An eighth means for solving the above-mentioned problems is an operating means for setting a range of image data for generating a three-dimensional image by a threshold value and displaying one or more two-dimensional tomographic images. On the other hand, 3 using the two-dimensional tomographic image display means for displaying each color for each area corresponding to the set threshold value range and the image data in the set threshold value range 3
A three-dimensional display processing device, comprising: a three-dimensional image generation unit that creates and displays a three-dimensional image.

[0019]

In the three-dimensional display processing method as the first means for solving the problem, when the threshold value of the range of the image data to be subjected to the three-dimensional display processing is set, the image in the set threshold value range is set. Display according to the data is performed on the two-dimensional tomographic image. Then, a three-dimensional image corresponding to the image data in the set threshold range is created.

In the three-dimensional display processing method which is the second means for solving the problem, in the three-dimensional display processing method,
Dimensional display A histogram of the signal strength and appearance frequency of the image data to be processed is displayed, and when the threshold of the display range is set by referring to this histogram, the image data of the set threshold range is displayed. A three-dimensional image corresponding to is created.

In the three-dimensional display processing method which is the third means for solving the problem, a histogram of the signal intensity and the appearance frequency of the image data to be subjected to the three-dimensional display processing is displayed, and the range displayed with reference to this histogram When the threshold value is set, the display is performed on the two-dimensional tomographic image according to the image data in the set threshold value range. Then, a three-dimensional image corresponding to the image data in the set threshold range is created.

In the three-dimensional display processing method as the fourth means for solving the problem, when the threshold value of the range of the image data to be subjected to the three-dimensional display processing is set, the set threshold value range is set. Color display is performed on the two-dimensional tomographic image.
Then, a three-dimensional image is created for each image data within the set threshold range.

In the three-dimensional display processing apparatus which is the fifth means for solving the problem, when the threshold value is set, the display according to the image data in the set threshold value range is displayed on the two-dimensional tomographic image. To be done. Then, a three-dimensional image is created according to the image data within the set threshold range.

In the three-dimensional display processing apparatus which is the sixth means for solving the problem, a histogram of the signal intensity and the appearance frequency of the image data to be subjected to the three-dimensional display processing is displayed, and the range displayed with reference to this histogram When the threshold value is set, a three-dimensional image corresponding to the image data in the set threshold value range is created.

In the three-dimensional display processing apparatus which is the seventh means for solving the problem, a histogram of the signal intensity and the appearance frequency of the image data to be subjected to the three-dimensional display processing is displayed, and the range displayed with reference to this histogram When the threshold value is set, the display is performed on the two-dimensional tomographic image according to the image data in the set threshold value range. Then, a three-dimensional image corresponding to the image data in the set threshold range is created.

In the three-dimensional display processing device as the eighth means for solving the problem, when the threshold value of the range of the image data to be subjected to the three-dimensional display processing is set, the set threshold value range is set. Color display is performed on the two-dimensional tomographic image.
Then, a three-dimensional image is created for each image data within the set threshold range.

[0027]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a flow chart showing the procedure according to the three-dimensional display processing method of one embodiment of the present invention.

First, before describing the implementation procedure with the flowchart of FIG. 1, the entire three-dimensional display processing apparatus will be described with reference to the system configuration diagram of FIG. In FIG. 2, the data storage unit 1 includes an MR (magnetic resonance imaging apparatus) and a C.
This is for temporarily storing image data scanned (2D / 3D scan) as slice data from a T scanner or the like, and is composed of a magnetic disk device, a magneto-optical disk device, or the like. The three-dimensional processing unit 2 performs a three-dimensional display process (generation of a two-dimensional tomographic image, generation of a histogram, selected image data of a predetermined range) on the image data read from the data storage unit 1 by a method described later. 3D image generation), software, hardware, such as a computer device or an image processor equipped with a 3D display processing program,
It is composed of firmware. Therefore, this 3
The dimension processing unit 2 constitutes a histogram display means, a two-dimensional tomographic image generation (display) means, and a three-dimensional image generation means. The operation unit 3 gives various instructions at the time of three-dimensional display processing, and is composed of, for example, a keyboard, a mouse, a trackball, a joystick, a touch panel and the like connected to a computer. The display unit 4 is for displaying an image processed or being processed by the three-dimensional processing unit 2, and is composed of a display device such as a CRT display device or a liquid crystal display device capable of color display. still,
The operation instruction section (icon or the like) displayed on the display screen of the display means 4 is used together with the mouse or the like to input an instruction, and the icon or the like on the display screen also constitutes the operation means. May be included in 3. The image output means 5 outputs an image to a recording medium such as a film (X-ray film or the like).

Next, the procedure of the three-dimensional display processing method and the operation of the three-dimensional display processing apparatus according to the embodiment of the present invention will be described with reference to the display screen examples shown in FIGS. First, according to an instruction from the operation unit 3, desired image data is selected from the image data stored in the data storage unit 1 by the three-dimensional processing unit 2.
It is read into the internal memory area (step 1). With respect to the read image data, the three-dimensional processing unit 2 displays the multi-window on the display means 4 as shown in FIG. FIG. 3 shows an example of a screen only for the portion related to the operation description of this embodiment.

First, the three-dimensional processing unit 2 generates a main screen (FIGS. 3B and 4) on which a two-dimensional tomographic image of the read image data from each three-axis direction and an operation instruction icon are displayed. Then, it is displayed on the display means 4 (step 2).

Here, the main screen is axial,
A tomographic image (hereinafter referred to as an axial image, a coronal image, and a sagittal image) from each of the three axial directions of coronal and sagittal is shown, and this is referred to as multiplanar reformation (Mult).
i Plannar Reformation) image (hereinafter referred to as MPR image). Here, the axial image shows a tomographic image when the body axis is viewed in the depth direction (axial direction) (CV2 and FIG. 4 in FIG. 3B), and the sagittal image is the sagittal direction along the axis. 3B is a tomographic image (CV3 and FIG. 4 in FIG. 3B), and the coronal image is a tomographic image in a coronal direction orthogonal to the axial and sagittal directions (CV4 and FIG. 3B). 4). At this stage, since the three-dimensional image (CV1 in FIG. 3B) has not been generated, only the three-axis two-dimensional tomographic image is displayed. Thus, the three-axis two-dimensional tomographic image is simultaneously displayed. By doing so, the state of the region of interest (VOI) can be known, so that the region where the three-dimensional image is to be generated is easily recognized.

A reference line as a reference line indicating a display position is displayed on the three-dimensional two-dimensional tomographic image in the MPR image of each axis, and the reference line is orthogonal to the MPR image of the other axis. The position is shown. Therefore, by giving an instruction to move any of the reference lines shown in the MPR image using the mouse and the icon on the display screen, the two-dimensional processing of the axis is performed by the processing of the three-dimensional processing unit 2. The tomographic image moves vertically and horizontally, and a two-dimensional tomographic image of a cross section corresponding to the other two axes is displayed. By such an operation, it is possible to quickly display an arbitrary desired plane while displaying a three-axis two-dimensional tomographic image.

Further, the icon group displayed on the right side of FIG. 4 constitutes an operation panel of the main screen, and a desired operation is performed by clicking these icons with a mouse or the like.

As the operation of the icon group on the main screen of FIG. 4 by the operation panel, at the stage of displaying the two-dimensional tomographic image, as a preprocessing function, the reconstruction area setting, the threshold setting, the image Enlargement / reduction, offset center setting associated with image enlargement processing, mask image save /
Can be loaded. In addition, after displaying a three-dimensional tomographic image, which will be described later, the window level is changed, various measurements are performed, the threshold is changed, the format is changed, the object (object) is rotated, and the cut plane (cut plane) is changed. Settings, object operation, offset setting / change, film output (shooting), saving of display image data, etc. can be performed.

Then, the three-dimensional processing unit 2 generates a histogram of the appearance frequency of the signal intensity for all the read image data, and displays the histogram screen on the display means 4 (step 3 in FIG. 1). , Fig. 3 (c)
And FIG. 5). As shown in FIG. 3, this histogram screen has the same display screen (FIG. 3) as the main screen described above.
(A)) Displayed as a multi-window.

When generating this histogram,
Although it may be a histogram for all the read image data, it is sufficient that at least the data of the two-dimensional image to be displayed is included.

Here, referring to the signal strength and the appearance frequency of the histogram screen displayed on the display means 4, the upper limit of the threshold value of the range (this range is referred to as "window") in which the three-dimensional display is to be performed. And the lower limit are interactively specified on the histogram screen via the operation unit 3 (step 4 in FIG. 1). That is, the three-dimensional processing unit holds the designated threshold value and the threshold value so that the threshold value (a pair of the upper limit value and the lower limit value) is displayed on the histogram screen according to the instruction from the operation unit 3. Display processing is performed on the histogram screen of. It is assumed that the upper limit value and the lower limit value given by one instruction are displayed in the same color on the assumption that the instruction of the threshold value is given a plurality of times, and different colors are displayed each time the instruction is given. It is possible to

Thus, by observing the shape of the peaks and valleys of the histogram, the shape of the flat portion sandwiched between the peaks, etc.,
Areas of signal intensity corresponding to skin, brain parenchyma, bones, etc. can be expected. Therefore, by pointing the window with reference to the histogram screen in this way, the range of image data of the part (skin, brain parenchyma, bone, etc.) to be three-dimensionally displayed can be predicted in advance before the three-dimensional processing. As a result, an almost appropriate threshold value is given.

FIG. 6 is an explanatory diagram showing the details of each icon on the histogram screen of FIG. 5 described above. This Figure 6
As shown in, on the histogram screen, in addition to the histogram (i) displayed in the canvas (CANVAS) as the graph display area, the horizontal scale mode selector that selects whether the horizontal scale of the histogram is automatic or manual (ii),
Magnification section (iii) where the magnification entered by key input when manually setting the magnification on the horizontal axis is displayed, Vertical scale mode selector to select whether the vertical scale of the histogram is automatic or manual
(iv), the magnification section (v) where the magnification entered by key input when manually setting the vertical axis is displayed, the window creation button (xi) instructed when creating the window, the last created Delete window Delete window button (xi
i), the window selector (viii) that selects the window number that becomes valid when setting the threshold, and the maximum threshold input section (ix) where the input value is displayed when the upper limit of the threshold is keyed in. ), The minimum threshold input section (x) where the input value is displayed when the lower limit of the threshold is entered, the window (xi) surrounded by the upper and lower limits of the threshold, the window to the left and right A window slider to slide (xii), a minimum slider (xiii) to determine the lower limit, a minimum warp button (xiv) to set the lower limit of the histogram minimum, and a preview button (xv) to instruct the execution of the preview. ), The standard display button (xvi) that returns the main screen changed in the preview to the original display, the image update button that executes the three-dimensional display processing based on the set window, the operation that ends this histogram screen Exit button Exists.
Therefore, a desired operation can be executed by clicking each of the above buttons and icons with a mouse or the like.

Next, when the icon corresponding to the preview button on the display screen shown in FIG. 5 is clicked, the portion corresponding to the data in the threshold range is displayed as an MPR image and the designated threshold is displayed. The three-dimensional processing unit 2 executes a preview process of filling (overwriting) with the same color as that described above, and displays it on the display unit 4 (FIG. 1).
Step 5). In addition to displaying the MPR image in advance and filling the predetermined range with a color, for example, it is possible to display only the MPR image in the necessary range for the first time by a preview instruction.

By such a preview process (displaying the filling for each color corresponding to the threshold value), the filled area of the MPR image can be seen to find out what part
Whether the three-dimensional display processing is performed can be visually known before the three-dimensional display processing is executed. Therefore, if it is found by looking at the preview processing result that the threshold value is not appropriate, the threshold value can be reset as described later. In this way, it becomes possible to set the optimum threshold value for extracting the region in which the three-dimensional display process is executed.

Further, by referring to the preview processing result, it becomes possible to visually know before the three-dimensional image is generated that the unnecessary portion or the extra portion called dust is included in the threshold value. (FIG. 1, step 6). That is, when dust due to noise or the like is displayed on the MPR image of the main screen due to the threshold value, a correction process such as a mask process is performed on such a part as necessary (step 7 in FIG. 1). This correction process is performed by giving an instruction from the operation unit 3.

When it is found by looking at the preview processing result that the threshold value is not appropriate (step 8 in FIG. 1), the upper and lower threshold values are again instructed by the operation unit 3. It is possible to reset the threshold value by instructing interactively on the histogram screen via (step 4 in FIG. 1). In this case, if the display is made in a color different from the display of the upper limit value and the lower limit value given by the previous instruction, the changed portion becomes clear when the preview processing result is displayed again. In this way, it becomes possible to set the optimum threshold value for extracting the region in which the three-dimensional display process is executed.

Then, when the icon of the preview button on the histogram screen is clicked again by the operation unit 3, the portion corresponding to the data of the threshold range set again is displayed by the MPR image and the designated threshold is displayed. The three-dimensional processing unit 2 executes a preview process in which the same color as the displayed color is used to fill it, and displays it on the display unit 4 (FIG. 1).
Step 5).

For example, on the histogram screen, a portion that seems to correspond to the brain parenchyma is selected as a window by the upper and lower threshold values (step 4 in FIG. 1), and the upper and lower threshold values are displayed in green. Suppose In this case, the preview processing result display (step 5 in FIG. 1) is MP
The part corresponding to the brain parenchyma of the R image is displayed in green, and it can be easily recognized that this part is selected. Also,
At the same time, if another portion of the threshold value is selected, it is displayed in a different color (red, yellow, etc.), and the preview processing result is also displayed in the same corresponding color.

When the threshold value is reset, the three-dimensional display can be performed depending on the range of the changed threshold value by looking at the area painted again with a different color on the MPR image. Whether or not is performed can be visually known before the execution of the three-dimensional display processing.

If the threshold value needs to be changed, the process is repeated with reference to the preview result in which the MPR image is color-filled. Further, it is also possible to change the display location of the MPR image displayed on the main screen and perform a preview. Then, if it is not necessary to change the threshold value, the process proceeds to three-dimensional processing.

Here, when the icon of the setting update button on the histogram screen is clicked by the operation unit 3, the three-dimensional processing is performed such that volume data is created only for the image data within the threshold range set at that time. 3
The dimension processing unit executes it (step 9 in FIG. 1). And 3
The dimension processing unit 2 generates a three-dimensional image to be displayed from the volume data, and the upper left column of the main screen on the display unit 4 (see FIG. 3).
(B) Display on CV1 and FIG. 4).

If a plurality of threshold ranges (windows) are set as described above, a plurality of three-dimensional images can be generated. For example, volumetric models of the brain, skin, and bone can be generated (FIG. 1, step 10 → step 4). For example, first, a threshold value for the brain parenchyma is set and the three-dimensional display process is executed, and then a threshold value for the bone is set and the three-dimensional display process is executed. It is also possible to process.

Further, with respect to the generated three-dimensional image, data is stored in the image storage device 1 as necessary, and is output (filming) to a film or the like via the image output means 5 as needed.

As described above, before the three-dimensional display processing is executed, the threshold value of the data to be processed in the three-dimensional display processing is set, and the data selected by the threshold setting is previewed on the MPR image. With the three-dimensional display processing method of performing the three-dimensional display processing, it is possible to visually confirm the range to be three-dimensionally processed from the preview before processing, and it becomes possible to quickly perform the processing of extracting the desired display surface, and the reprocessing can be performed efficiently It becomes possible to perform a three-dimensional display process that does not require

Before executing the three-dimensional display processing, the three-dimensional display processing method is performed in which the histogram of the data is displayed and the threshold value of the data to be three-dimensionally displayed is set with reference to the histogram. You can visually check the range to be processed from the histogram before processing.
The process of extracting a desired display surface can be performed quickly, and the three-dimensional display process that is efficient and does not require reprocessing can be performed.

Before the three-dimensional display processing is executed, the histogram of the data is displayed, the threshold value of the data to be three-dimensionally displayed by referring to the histogram is set, and the threshold value is selected. By the three-dimensional display processing method of previewing on the MPR image based on the data, the range to be three-dimensionally processed can be visually confirmed from the histogram and the preview before processing, and the desired display surface extraction processing can be performed quickly. As a result, the three-dimensional display processing can be performed efficiently and without the need for reprocessing.

Then, before executing the three-dimensional display processing,
By the threshold value setting of the data to be processed in three-dimensional display and the three-dimensional display processing method of performing a preview for each color on the MPR image by the data selected by the threshold setting,
Even if there are a plurality of three-dimensionally processed areas, each area can be visually confirmed, the desired display surface extraction processing can be performed quickly, and the processing is efficient and does not require reprocessing.
Dimensional display processing can be performed.

Before executing the three-dimensional display processing, the 3
Dimension display A threshold value of data to be processed and a three-dimensional display processing device for previewing on the MPR image according to the data selected by the threshold value are used to change the range of three-dimensional processing from the preview before processing. It is possible to visually confirm, and the process of extracting a desired display surface can be quickly performed, and the three-dimensional display process that is efficient and does not require reprocessing can be performed.

Before executing the three-dimensional display processing, the three-dimensional display processing device for displaying the histogram of the data and setting the threshold value of the data to be processed for the three-dimensional display with reference to the histogram is used. You can visually check the range to be processed from the histogram before processing.
The process of extracting a desired display surface can be performed quickly, and the three-dimensional display process that is efficient and does not require reprocessing can be performed.

Before the three-dimensional display processing is executed, the histogram of the data is displayed, the threshold value of the data to be three-dimensionally displayed by referring to the histogram is set, and the threshold value is selected. With the three-dimensional display processing device that performs a preview on the MPR image based on the data, the range to be three-dimensionally processed can be visually confirmed from the histogram and the preview before processing, and the desired display surface extraction processing can be performed quickly. As a result, the three-dimensional display processing can be performed efficiently and without the need for reprocessing.

Then, before executing the three-dimensional display processing,
With a three-dimensional display processing device for setting a threshold value of data to be three-dimensionally displayed and performing a preview for each color on an MPR image according to the data selected by the threshold value setting,
Even if there are a plurality of three-dimensionally processed areas, each area can be visually confirmed, the desired display surface extraction processing can be performed quickly, and the processing is efficient and does not require reprocessing.
Dimensional display processing can be performed.

[0059]

As described above in detail, in the present invention, the three-dimensional processing is executed after the processing such as the display of the histogram, the setting of the threshold value and the execution of the preview are combined. Thus, the three-dimensional image generated by the three-dimensional processing can be visually confirmed in advance (before the three-dimensional image processing), the desired display surface extraction processing can be performed quickly, and the efficiency is improved. It is possible to realize a three-dimensional display processing method and a three-dimensional display processing device capable of performing three-dimensional display processing that does not need to be recreated.

[Brief description of drawings]

FIG. 1 is a flowchart showing a procedure of a three-dimensional display processing method according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a configuration of a three-dimensional display processing device according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an example of the entire display screen.

FIG. 4 is an explanatory diagram showing an example of a main screen in a display screen.

FIG. 5 is an explanatory diagram showing an example of a histogram screen on the display screen.

FIG. 6 is an explanatory diagram showing details of a histogram screen in the display screen.

[Explanation of symbols]

 1 data storage unit 2 three-dimensional processing unit 3 operation unit 4 display means 5 image output means

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[Procedure amendment]

[Submission date] July 11, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 4

[Correction method] Change

[Correction content]

FIG. 4 is a diagram showing an example of a main screen in a display screen displayed on the display according to an embodiment of the present invention with a photograph of a halftone image.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

FIG. 5 is a diagram showing an example of a histogram screen in the display screen displayed on the display according to an embodiment of the present invention with a photograph of a halftone image.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location 9365-5L G06F 15/72 450 K

Claims (6)

[Claims] 1. A range of image data for generating a three-dimensional image is set by a threshold value, and one or more two-dimensional tomographic images are displayed for the image data within the set threshold value range, and the setting is performed. A three-dimensional display processing method, wherein a three-dimensional image is created and displayed using the image data in the range of the specified threshold. 2. A histogram is displayed for image data, a range of image data to be three-dimensionally displayed is set by a threshold value based on this histogram, and image data within the set threshold value range is used to set 3 A three-dimensional display processing method characterized by creating and displaying a three-dimensional image. 3. An operating means for setting a threshold value of image data in a range to be three-dimensionally displayed, a two-dimensional tomographic image display of image data to be three-dimensionally displayed, and a set threshold value A three-dimensional display processing device comprising: a three-dimensional processing means for displaying a range on a two-dimensional tomographic image and creating a three-dimensional image using image data in a set threshold range. . 4. A histogram display means for generating and displaying a histogram for image data, and an operating means for setting a range of image data to be three-dimensionally displayed based on the generated histogram by a threshold value. And a three-dimensional image generation means for generating and displaying a three-dimensional image using image data in a threshold range. 5. A histogram display means for generating and displaying a histogram of image data, an operating means for setting a range of image data to be three-dimensionally displayed based on the generated histogram by a threshold value, and setting. A two-dimensional tomographic image generating means for generating and displaying one or more two-dimensional tomographic images for the image data in the set threshold value range, and a three-dimensional image using the image data in the set threshold value range. A three-dimensional display processing device, comprising: a three-dimensional image generating means for generating and displaying. 6. An operating means in which a range of image data for generating a three-dimensional image is set by a threshold value, and a threshold value range set for displaying one or more two-dimensional tomographic images. A two-dimensional tomographic image display means for displaying a different color for each area corresponding to the area, and a three-dimensional image generation means for creating and displaying a three-dimensional image using image data within a set threshold range. A three-dimensional display processing device characterized by being provided.