JPH0414966A - Digital x-ray television pickup device - Google Patents

Abstract

PURPOSE:To simplify the circuit by providing a cursor display means displaying a frame shaped cursor representing a pickup range of a cine camera onto a display picture of a picture display device. CONSTITUTION:A cursor display graph memory 19 is a memory storing a data to display a frame shaped cursor representing the pickup range of a cine camera onto a display picture of a television camera 10 and provided to a picture processing unit 50. When a picture is picked up simultaneously by the television camera 10 and the cine camera 7, the frame cursor is displayed on the display picture of the picture display device 50. Thus, the pickup range of the cine camera 7 is displayed without use of the exclusive cursor display device of analog circuit constitution and the circuit is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a digital line television photographing device that is capable of simultaneously photographing images with a television camera and a cine camera.

[Conventional technology]

Conventionally, when shooting with a cine camera with this type of device,
In order to monitor the images, a television camera is used to display the images. At this time, a cursor display analog signal from the cursor display device is superimposed on the video signal from the TV camera so that the intended shooting area and the actual shooting area match, and a frame is created to indicate the imaging range of the cine camera. The cursor is displayed.

[Problem to be solved by the invention]

The above conventional technology requires a dedicated cursor display device in addition to the image display device, and this cursor display device is based on an analog circuit that superimposes an analog signal for cursor display on a video signal from a television camera. There was a problem in that the configuration was complicated.

Furthermore, this cursor display device is composed of analog circuits as described above, and is used only to simply display the imaging range of the cine camera on the monitor screen, and has no other functions or uses. First, there is a problem in that the display screen of the monitor, which represents the imaging range of the cine camera, is not effectively utilized.

An object of the present invention is to provide a digital X-ray system that can display the imaging range of a cine camera without using a dedicated cursor display device, and that can easily provide other functions and uses, such as enlarging and displaying the image within the imaging range. The purpose of the present invention is to provide a television photographing device.

[Means to solve the problem]

The above object includes an X-ray tube, a detector arranged opposite to the X-ray tube with a subject in between and converts transmitted X-rays into visible light, and a distributor that distributes an output optical image of this detector. a television camera and a cine camera each capable of photographing the optical images distributed by the distributor; an image processing device that processes signals from the television camera; and an image display device that displays images based on the signals from the image processing device. In the digital X-ray television photographing apparatus, the image processing apparatus includes means for displaying a frame-shaped cursor representing the imaging range of the cine camera on the display image of the television camera, and the image processing apparatus includes means for displaying a frame-shaped cursor representing the imaging range of the cine camera on the display image of the television camera, This is achieved by displaying the frame-shaped cursor on the display screen of the image display device when photographing.

[Effect]

When shooting images simultaneously with a TV camera and a cine camera (at the start of fluoroscopy during cine shooting, or when starting cine shooting during fluoroscopy to prepare for cine shooting), the cursor is a frame representing the imaging range of the cine camera. is displayed on the display screen of the image display device as a cursor.

The above-mentioned cursor display means is newly provided in the image processing apparatus, but the display of the frame-shaped cursor representing the imaging range of the cine camera is also used as the image display means of the image processing apparatus. In addition, the image processing device handles digital signals, and the setting of the imaging range of the cine camera according to the present invention is also in the form of a digital signal. Since the display can be performed without using the circuit, the circuit is simplified. Further, other functions and uses such as enlarging and displaying the image within the imaging range can be easily provided, and the display screen of the monitor representing the imaging range of the cine camera can be effectively utilized.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a digital X-ray television photographing apparatus according to the present invention.

As shown in FIG. 1, the digital X-ray television imaging apparatus of the present invention emits light from an X-ray tube 2 to which a high voltage is applied by a high-voltage generator, passes through an X-ray aperture 3, and passes through a subject 5. The X-rays are processed using an X-ray image intensifier (hereinafter referred to as
1.1. ) 6 into visible light and distributed by a distributor 9, the image can be simultaneously photographed by a television camera 10 and a cine camera 7, and an image processing device 50. image display device (hereinafter referred to as monitor) 21;
System controller 22. Operation console 23° cine camera controller 8. It is configured to include a bed 4 on which a subject is placed.

The video signal from the television camera 10 undergoes image processing by the image processing device 50 and is displayed on the monitor 21. This image processing is performed by the system controller 22 based on commands from the console 23. The system controller 22 also controls the high voltage generator 1. Via the cine camera controller 8, X-ray conditions are set and the cine camera is controlled.

In the image processing device 5o, the video signal from the television camera 10 is converted into a digital signal by the ADC II, inputted to the ALU 13 via the switch 12, and subjected to appropriate arithmetic processing. The output of the ALU 13 is sent to the first frame memory (FMI) 14. Second frame memory (FM2) 15
and is again input to A and LU 13 via switch 12.

The arithmetic processed image is stored in the second frame memory 15 and sent directly via only the switch 17 or via the image enlarger 16 to the single image display memory 18. DAC20
converts the data from the image display memory 18 (when the cursor display graph memory 19 is ON, the data from this memory 19 and the memory 18) into a video signal, and displays the image on the monitor 21. Here, the cursor display graph memory 19 is a memory in which data for displaying a frame-shaped cursor representing the imaging range of the cine camera 7 on the display image of the television camera 10 is recorded. It is provided.

Examples of images displayed on the monitor 21 are shown in FIGS.
Shown in C). In these figures, 3] is the monitor screen,
32 is a visual field of 1.1.6, 33 is a vascular fluoroscopic image, 34 is a frame-shaped cursor representing the imaging range of the cine camera graph, and 35 is an enlarged image of the vascular fluoroscopic image 33.

Among these FIGS. 2(,) to (c), FIG. 2(a) shows the case where only the television camera 10 is used to take images, that is, only perspective photography is performed. In this case, monitor screen 3
1, only a perspective image 33 is displayed.

FIG. 2(b) shows a case where the television camera 10 and the cine camera 7 are simultaneously taking images, for example, when fluoroscopy is started during cine shooting, or when cine shooting is started during fluoroscopy in preparation for cine shooting. It shows. In this case, the image processing device 50 reads data from the cursor display graph memory 19 in addition to the data reading ratio from the image display memory 18, and displays a frame-shaped cursor 3 on the screen of the monitor 21.
4 (imaging range of the cine camera 7) is also displayed.

Therefore, the image displayed on the monitor screen 31 is
A frame-shaped cursor 34 is displayed superimposed on the image shown in FIG.

In the case shown in FIGS. 2(a) and (b), one image processing device 5o
The switch 17 inside is set to the B side.

In the case shown in FIG. 2(b), the cursor display graph memory 19 is turned on.

FIG. 2(c) shows the frame-shaped cursor 34 shown in FIG. 2(b).
This shows an enlarged display of the image inside. In this case, the image processing device! The switch 17 in the switch 50 is set to the A side, and the cursor display graph memory 19 is turned off. When the image processing device 5° transfers the image data stored in the second frame memory to the image display memory 18,
The image within the frame-shaped cursor 34 is enlarged by the image enlarger 16.

Note that the recording and setting of the frame-shaped cursor 34 in the cursor display graph memory 19 is performed, for example, by actually taking images with the television camera 10 and the cine camera 7 at the same time and making adjustments when assembling the device.

〔Effect of the invention〕

According to the present invention, the imaging range of a cine camera can be displayed without using a dedicated cursor display device having an analog circuit configuration, thereby simplifying the circuit. In addition, other functions such as enlarging and displaying images within the above imaging range,
It can be used easily, and has the advantage that the monitor display screen representing the imaging range of the cine camera can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the device of the present invention, and FIG.
The figure is a diagram showing an example of an image displayed on the same monitor.

Claims (1)

[Claims] 1. An X-ray tube, a detector arranged opposite to the X-ray tube with a subject in between and converting transmitted X-rays into visible light, and an output optical image of the detector. A distributor for distributing, a television camera and a cine camera each capable of photographing the optical images distributed by the distributor, an image processing device for processing the signal from the television camera, and an image display using the signal from the image processing device. In the digital X-ray television photographing apparatus, the image processing apparatus includes means for displaying a frame-shaped cursor representing the imaging range of the cine camera on the display image of the television camera, A digital X-ray television photographing apparatus characterized in that the frame-shaped cursor is displayed on a display screen of the image display device when simultaneously photographing images with a cine camera. 2. The digital X-ray television imaging apparatus according to claim 1, wherein the image processing apparatus is capable of enlarging and displaying the image within the frame-shaped cursor.