JPH0199084A - Image processor - Google Patents

Abstract

PURPOSE: To improve the capacity of diagnosis at the time of displaying plural pictures and executing thier comparing diagnosis by setting up respective ranges of interest(ROIs) on plural pictures simultaneously displayed on a display screen and controlling the ROIs to be arranged on corresponding positions in the relative position relation of plural pictures. CONSTITUTION: In the case of simultaneously displaying pictures A, B consisting of the same original picture on the screen of a display 9 at an enlargement rate of A > B, necessary data for these pictures A, B are extracted from a picture storing part 2 and a picture information storing part 3 under the control of an arithmetic control part 1 by operating a keyboard 5 and displayed on the screen of the display 9. On the stage, ROIs can be set up in respective pictures A, B. A position on the other picture set up correspondingly to a position set up on one picture can be judged by comparing respective picture information previously stored in a picture information storing part 8 and executing simple coordinate transformation and respective positions are set up correspondingly in relative position relation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image processing device that sets an ROI on an image displayed on a display.

(Prior art) A medical image obtained by a medical device such as an X-ray CT device or an MRI device is displayed on a display, and an ROI (region of interest) is set in a desired area of this image to selectively select only the ROI. 2. Description of the Related Art Image processing apparatuses that obtain diagnostic information by processing data or performing measurements are known. In this case, the position and size of the ROI can be arbitrarily selected and can be displayed on the display screen by an operator's operation. Attempts have also been made to display a plurality of images simultaneously on a display for comparative diagnosis, and in this case as well, the ROI can be set at any position.

(Problems to be Solved by the Invention) However, in conventional image processing devices, ROE is not applied to multiple images.
When setting , there is a problem that the diagnostic ability deteriorates because the relative positional relationships between the plurality of images are not matched.

The present invention has been made in response to such problems, and it is an object of the present invention to provide an image processing device that improves diagnostic performance.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention sets ROIs for each of a plurality of images displayed simultaneously on a display, and
This method is characterized in that I is controlled so that the relative positional relationships of I are at corresponding positions on a plurality of images.

(Function) Since each ROI of a plurality of images is set at a position that corresponds to the relative positional relationship between the images, it is possible to improve diagnostic performance when performing a comparative diagnosis by displaying a plurality of images. can.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the image processing apparatus of the present invention, in which the arithmetic control unit 1 is composed of a dedicated microprocessor, and is used to control the entire control operation and perform desired image processing. belongs to. The data of a plurality of images to be processed is stored in the image storage unit 2 and the image information storage unit 3 via the image input unit 4, and in particular, the image information storage unit 3 contains spatial position information of the images and supplementary information to the images. Additional information is stored. Desired data is selected from these image data by operating the keyboard '5, and sent to the display buffer 6, where it is displayed on the CRT display 9 under the control of the CRT control section 7.

The information in the image information storage unit 3 is used for ROI processing, which will be described later.
When a plurality of images are displayed simultaneously on the display 9, the data is converted into data regarding the relative positional relationship between these images and the coordinates of the screen of the display 9, and is stored in the screen information storage section 8. When a plurality of images are displayed simultaneously on the display 9, each image is given an ROI input unit 10.
I is set.

As shown in FIG. 3, the screen information storage section 8 stores screen management information 16. Section information for each screen (for example, A and B) 17.
18, etc., and further one section information, for example 17, consists of original image information 19 and screen information 20. Here, the section refers to the display 1 as shown in Figure 2.
The figure shows a display area when a plurality of images, a screen A12 and a screen B13, are divided and displayed simultaneously on the screen 11 of FIG. When a plurality of screens A and B are displayed in this way, a necessary display layout is determined in advance by operating the keyboard 5 or the ROI input section 10.

In the display example of FIG. 2, two types of images are shown as an example in which the same original image is displayed on screens A and B at different magnification ratios.

Next, the operation of this embodiment will be explained.

An example will be explained in which screens A and B consisting of the same original image are simultaneously displayed on the screen 11 of the display 9 at a magnification ratio of A>B, as shown in FIG. These two types of images are displayed on the display 9 by operating the keyboard 5 to extract necessary data from the image storage section 2 and the image information storage section 3 under the control of the arithmetic control section 1.

At this stage, when trying to set ROIs on each screen A and B, it is possible to set a narrow ROI on screen A with a large magnification, and a rough RC on screen B with a small magnification. )I is in a configurable state.

The position set on one screen is anatomically set on the other screen by comparing the screen information of each screen shown in FIG. 2 stored in advance in the screen information storage unit 8. This is performed by simple coordinate transformation, and the relative positional relationships are set to correspond to each other. If two types of images are the same original image, the original image information 19 is the same, so by referring to the screen information 20, each screen A and B can be
This can be easily achieved by simply converting the coordinate system.

Next, the operation for setting the ROI will be explained. First, in order to set the RO 115 on the screen B13 with a small magnification ratio, by operating the keyboard 5, the user traces A-B-)C from point A as the starting point (encircling the area with the trajectory of the cursor). At this time, the arithmetic control unit 1 reads the position information from the RO input 1o, and uses the screen A12.
From the original image information 19 and screen information 2o of one screen B13,
Trace trajectory A'→B' on screen A12 with large magnification
→Perform a control operation to draw C'. Next, keyboard 5
When you change the target screen from B to A by operating , the current position of the cursor changes from point 0 on screen B13 to C' on screen A12.
Change to a point. Therefore, from now on, trace is completed on this screen while looking at screen A12.

According to such an operation method, first you can roughly RO on the small screen B13. If you want to observe a detailed area precisely while tracing, you can use RO on the small screen A12 midway.
You can easily achieve your goal by moving the trace. In this case, even if the magnification ratios of both screens A and B are different, the relative positional relationship corresponds, so that the same part can be observed. Therefore, it is possible to improve diagnostic performance when performing comparative diagnosis. - degree set R
By operating the ROI input unit 10, the OI can be changed in various ways, such as parallel translation, enlargement, and reduction by one rotation. In this case, the ROI on the two screens A and B is
move in conjunction with each other while maintaining their relative positional relationship.

FIG. 5 shows another embodiment of the present invention, in which three-dimensional spherical ROIs 27 to 30 are set when three-dimensionally continuous images 23 to 26 are displayed on the screen 11. This shows that. In this case ROI 27 to 30
can be set by showing on the image a circle that intersects with each image (tomographic image).

Even in the case of this example, when moving or transforming the ROI,
This is done while maintaining the relative positional relationship on each image. Furthermore, the size and display position of each image can be changed arbitrarily. Therefore, the same effects as in the embodiment described above can be obtained.

[Effects of the Invention] As described above, according to the present invention, ROIs are set on a plurality of images so that their relative positions correspond to each other, so that diagnostic performance can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the image processing device of the present invention, and FIG. 2 is a display example of an image obtained by this embodiment.
Figure 3 is a block diagram showing the main parts of the device of this embodiment;
The figure is a display example showing the ROI setting method of this embodiment, and FIG. 5 is a display example according to another embodiment of the present invention. 1... Arithmetic control unit, 2... Image storage unit, 3...
・Image information storage unit, 4...Screen information storage unit, 10...
・ROI input section. Agent Patent Attorney Nori Chika Ken Shu
Takeshi KondoFigure 4Figure 3

Claims (1)

[Claims] In an image processing device that sets a ROI on an image displayed on a display, information on the relative positional relationship between an image storage means for storing a plurality of images displayed simultaneously on the display and the coordinates of the display screen regarding the plurality of images is stored. A screen information storage means for storing and each RO on a plurality of images.
An image processing apparatus comprising: ROI input means for setting I; and control means for controlling the position of each ROI so that the relative positional relationship corresponds on a plurality of images.