KR20190042292A - A method for obtaining a radiograph for an image registration and an apparatus for the same - Google Patents

Abstract

In the present specification, disclosed is an image photographing apparatus comprising: a generator for irradiating radioactive rays; a collimator for shielding a part of the radioactive rays irradiated from the generator to a subject; a sensor through which the radioactive rays passing through the collimator are incident; a camera for obtaining a visible light image of the subject; and a control unit for controlling at least one of the generator, the collimator, and the camera, wherein the control unit performs control so that a magnification ratio of the subject represented in a radioactive ray image obtained by the sensor and a magnification ratio of the subject represented in the visible light image are the same.

Description

Technical Field [0001] The present invention relates to a radiographic image capturing method and apparatus,

TECHNICAL FIELD The present disclosure relates to a method and apparatus for capturing radiographic images.

X-ray imaging devices, which are widely used in the medical technology field, irradiate the human body with x-rays and acquire images of the inside of the human body. It detects anomalies inside the human body.

The X-ray photographing apparatus irradiates an X-ray generated from a generator which generates an X-ray to an object to be photographed, and receives a X-ray reaching the object through a part of the object or a sensor facing the generator. Next, the received X-ray is converted into an electrical signal to generate an image.

Furthermore, in recent years, a medical light source based medical imaging system has been developed in accordance with the development of medical technology and consumer demands.

Korean Patent Application No. 10-2013-0081980 discloses a technique for realizing a composite image that reproduces near-infrared fluorescence emitted by a fluorescent material such as indigo cyan green and excitation light together with a visible light image.

Korean Patent Application No. 10-2015-0075862 discloses a method of acquiring a near-infrared fluorescence image, a radiographic image, and a visible light image through one optical system and matching them.

However, there is no image shooting method for more easily matching individual images captured based on a heterogeneous light source.

International application No. WO2017 / 090994 (Publication date 2017.06.01) discloses a method of matching a radiological image obtained through a dental x-ray photographing apparatus with a three-dimensional image through a three-dimensional camera However, there is a problem that it is necessary to perform separate software processing for adjusting the enlargement ratio between the heterologous images obtained according to the distance difference between the generator generating the x-ray and the camera for photographing the three-dimensional image.

The present specification discloses a method capable of easily matching captured radiographic images and visible light images without additional software processing.

In order to solve the above-mentioned problems, the present invention relates to a radiation irradiation apparatus comprising: a generator for irradiating radiation; A collimator for shielding a part of the radiation irradiated from the generator to the subject; A sensor through which the radiation passing through the collimator is incident; A camera for acquiring a visible light image of the subject; And a controller for controlling at least one of the generator, the sensor, the collimator, and the camera; The control unit controls the image capturing device to perform control so that the magnification ratio of the subject represented by the radiation image obtained by the sensor and the visible light image obtained by the camera are the same.

Wherein a first point and a second point of the subject are represented by the radiation image and the visible light image, respectively, and a distance and a direction at which the second point is spaced apart from the first point in the radiation image, The first point and the second point may be different points of the subject from the first point in the image, and the second point may be the same distance and direction.

Wherein the image position of the first point of the subject represented by the radiographic image and the image position of the first point of the subject represented by the visible light image are the same and the second point of the subject represented by the radiological image And the image position of the second point of the inspected object represented by the visible light image are the same and the first point and the second point may be different points of the inspected object.

The visible light image by the camera can be acquired when the radiation is irradiated by the generator and stored in a memory.

The control unit may control the camera such that an enlargement ratio of the visible light image is equal to an enlargement ratio of the radiation image when at least one of the generator and the sensor is controlled to change the enlargement ratio of the radiation image.

The photographing area of the visible light image by the camera may not be smaller than the photographing area of the radiation image by the sensor.

The camera is attached to the collimator and the shooting region of the camera can be adjusted so that the shooting region of the visible light image is maintained even if the position of the collimator is changed and the position of the camera is changed.

When the radiographic image capturing area is enlarged, the radiographic area of the camera may be adjusted so that the radiographic area of the visible light image is enlarged.

The camera is attached to the collimator, and the enlargement ratio of the camera can be adjusted so that the enlargement ratio of the visible light image is maintained even if the position of the collimator is changed and the position of the camera is changed.

At least one of the generator and the sensor may be controlled such that when the magnification of the visible light image is changed by the camera, the radiation image is acquired at an enlargement ratio of the visible light image.

The control unit may generate a single image for the subject by matching the visible image with the radiation image.

Further, the present invention relates to a radiotherapy apparatus comprising: a generator for irradiating a subject with radiation; A sensor which receives radiation transmitted through the inspected object from the generator; A camera for acquiring a visible light image of the subject; And a control unit for controlling at least one of the generator, the sensor, and the camera; The controller controls the magnification of the subject to be equal to the radiation image obtained by the sensor and the visible light image obtained by the camera.

In addition, the present invention relates to a method of image capturing performed by an image capturing apparatus, comprising the steps of: irradiating a subject with radiation using a generator; And acquiring a radiation image by collecting the radiation irradiated to the object to be measured with a sensor; And acquiring a visible light image of the subject using a camera, wherein the enlargement ratio of the radiographic image obtained by the sensor and the subject represented by the visible light image acquired by the camera is the same image A photographing method is disclosed.

Obtaining a visible light image of the subject before irradiating the subject with radiation using the generator; Determining an enlargement ratio of the radiation image to the subject based on the visible light image; And a step of determining an enlargement ratio of the visible light image based on an enlargement ratio of the radiation image.

Obtaining a visible light image of the subject before irradiating the subject with radiation using the generator; Determining an enlargement ratio of the visible light image to the subject based on the visible light image; And a step of determining an enlargement ratio of the radiation image based on an enlargement ratio of the visible light image.

The visible light image may be a subject image at the time when the radiation is irradiated.

And generating a single image for the subject by matching the visible image and the radiographic image.

Also, the present invention relates to a method of acquiring a visible light image of a subject; Determining a radiation irradiation area for the subject based on the visible light image; Determining an enlargement ratio of the radiographic image and the enlargement ratio of the visible light image to the inspected object based on the visible light image; Setting a radiation irradiation area for the subject using a collimator according to the determined radiation irradiation area; Irradiating the subject with radiation; And a step of acquiring a radiation image by collecting the radiation irradiated to the object to be examined through the collimator with a sensor, wherein a visible light image of the object is acquired by the camera upon irradiation of the radiation, Discloses an image capturing method having the same enlargement ratio of the radiographic image and the enlargement ratio of the visible light image.

In addition, the present specification discloses a computer-readable recording medium on which a computer program for performing the above-mentioned image capturing method is recorded.

In addition, the present specification discloses a video photographing system including a video photographing apparatus and a database for storing an image photographed by the image photographing apparatus together with information of an object to be photographed.

By using the image processing method and apparatus according to an embodiment, it is possible to easily match the radiation image and the visible light image without additional software processing for adjusting the enlargement ratio of the radiation image and the visible light image and the position of the image.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to more fully understand the drawings recited in the detailed description of the present invention, a detailed description of each drawing is provided.
FIG. 1 is a view showing a video photographing apparatus 100 according to an embodiment.
FIG. 2 and FIG. 3 are views for explaining a method of photographing an image performed by the image photographing apparatus 100 according to an embodiment.
4 is a diagram showing an example in which a radiation image and a visible light image are merged.
Figs. 5 and 6 are flowcharts for explaining the image capturing method of the image capturing apparatus 100. Fig.
7 is a block diagram illustrating a detailed configuration of the image photographing apparatus 100 according to an embodiment.
FIG. 8 is a block diagram illustrating a configuration of a video image capturing system 1000 having a video image capturing apparatus 100 according to an embodiment.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element may be referred to as a second element, The component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like are used to specify that there are features, numbers, steps, operations, elements, parts or combinations thereof described herein, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

The present specification describes an image capturing method according to an embodiment in which an image of an object to be captured is captured at a different magnification ratio. First, the terminology for explaining the present invention and the basic configuration of the image photographing apparatus will be described with reference to FIG.

FIG. 1 is a view showing a video photographing apparatus 100 according to an embodiment. The image capturing apparatus 100 according to an exemplary embodiment includes a generator 110, a sensor 120, and a controller 130.

In one embodiment, the generator 110 may generate radiation. Preferably, the generator 110 is composed of a plurality of generators to generate X-rays. In one embodiment, the generator 110 generates an X-ray according to the first mode or the second mode.

In one embodiment, the mode is for distinguishing the imaging method using the X-ray. In one embodiment, the first mode may be a CT (Computed Tomography) or a panoramic (panoramic) imaging mode. It is possible to grasp the three-dimensional structure of the human body by taking a three-dimensional image through CT image, and to grasp the entire tooth condition and structure through panoramic image, and to utilize it for diagnosis and operation.

Also, in an embodiment of the present invention, the second mode may be a cephalometric imaging mode. In other words, the second mode is a method for acquiring an image of the entire head region, in which a light source for generating an X-ray and a subject are located at a relatively long distance and acquires an image through a sensor positioned near the subject. Obtaining an image of the entire head can be used to identify the shape of the head and teeth skeleton and skin, and to identify clinical location points.

In one embodiment, the generator 110 determines the intensity of the X-rays generated according to the imaging mode and irradiated to the sensor 120, the dose of the X-rays, etc., and determines the irradiation range through the additional collimator. The collimator selectively passes the radiation according to the incidence direction of the radiation.

Also, it is possible to change the focus for a specific subject to be photographed, or to generate X-rays according to other set photographing conditions.

In one embodiment, the sensor 120 collects x-rays generated by the generator 110. Specifically, the sensor 120 absorbs the X-rays transmitted through the subject generated by the different generators 110 according to the first mode or the second mode, and converts the X-rays into an electric signal. And the image can be generated using the converted electric signal.

Also, in one embodiment, the sensor 120 may make the active area different depending on each shooting mode. For example, in the case of the first mode and the second mode, the X-rays generated by the different generators 110 may be collected, but an image may be generated using only X-rays collected through different active areas.

In one embodiment, the control unit 130 may control the photographing condition, the active area, and the like by software to configure a photographing environment according to the photographing mode. In addition, the control unit 130 can control the physical operation of the generator 110 and the sensor 120 by hardware control, and configure the shooting environment according to each shooting mode.

Hereinafter, an image capturing method performed by the image capturing apparatus 100 according to an embodiment will be described with reference to FIG. 2 and FIG.

First, referring to FIG. 2, the generator 110 may include a collimator for adjusting X-rays generated by the generator 110. An additional secondary collimator 140 may be additionally provided for photographing, Can be obtained.

That is, the collimator (not shown) included in the generator 110 determines the irradiation direction and range of the X-rays generated primarily, and further determines the specific irradiation mode according to each mode through the secondary collimator 14 .

If the camera 150 is included in the generator as shown in FIG. 2, the enlargement ratio of the image by the X-ray controlled by the actual secondary collimator can not be taken into consideration. Therefore, the visible light image captured by the camera 150, The enlargement ratio of the x-ray image generated by the same subject 10 and the size difference of the interest region may occur.

That is, in order to visually explain the change according to the treatment by matching the x-ray image with the visible light image, software is needed to adjust each image according to the enlargement ratio and to match.

In order to solve such a problem, the image photographing apparatus 100 according to the present invention constructs a camera 150 corresponding to the secondary collimator 140 as shown in FIG. 3 to simplify the software image adjustment and registration process .

In detail, the image capturing apparatus 100 according to an embodiment of the present invention may include a camera 150 for capturing an image of the subject 150 with the same magnification as the subject enlargement ratio of the radiation image obtained by the radiation emitted from the generator 110, Lt; / RTI > The external image of the subject may be a visible light image. The image capturing apparatus 100 according to the embodiment can control each component module to acquire the radiation image and the visible light image at the same magnification.

In addition, the image capturing apparatus 100 according to an exemplary embodiment can control each component module of the image capturing apparatus 100 so that the radiographic image and the visible light image are captured on the same line. Accordingly, the image capturing apparatus 100 according to the embodiment can easily match the radiation image and the visible light image without additional software processing for adjusting the magnification of the radiation image and the visible light image.

Image magnification control

First, the image capturing apparatus 100 according to an exemplary embodiment can control each component module to acquire a radiographic image and a visible light image with respect to the inspected object 10 at the same enlargement ratio.

The image capturing apparatus 100 according to an exemplary embodiment may control at least one of the generator 110 and the sensor 120 in order to control an enlargement ratio of the radiation image. For example, the image capturing apparatus 100 may change the position of at least one of the generator 110 and the sensor 120 in order to change the magnification of the radiation image.

The image capturing apparatus 100 according to an exemplary embodiment may control the camera 150 to control an enlargement ratio of a visible light image. For example, the image capturing apparatus 100 can change the optical path using a lens or the like of the camera 150, or change the position of the camera.

The image capturing apparatus 100 according to the embodiment can control the enlargement ratio of the visible light image according to the enlargement ratio of the radiation image. For example, the image capturing apparatus 100 may set the magnification rate of the radiation image of the generator 110 and the sensor 120 so that the visible light image of the subject 10 is captured at the enlargement ratio of the radiation image to the subject 10, It is possible to control the enlargement ratio of the camera 150 to control the enlargement ratio of the visible light image. For example, when the position of at least one of the generator 110 and the sensor 120 is adjusted so that the enlargement ratio of the radiographic image is changed, the image capturing apparatus 100 sets the magnification rate of the visible light image equal to the enlargement rate of the radiographic image The camera 150 can be controlled. In a similar manner, in the image capturing apparatus 100 according to an embodiment, when an image capturing area of a radiation image is enlarged according to the positional shift of at least one of the generator 110 and the sensor 120, So that the photographing area of the camera 150 can be adjusted.

In contrast, the image capturing apparatus 100 according to the embodiment may control the enlargement ratio of the radiation image according to the enlargement ratio of the visible light image. For example, the image capturing apparatus 100 confirms the enlargement ratio setting of the camera 150 so that the radiation image is captured at the enlargement ratio of the visible light image, and controls the generator 110 and the sensor 120 accordingly, The magnification ratio can be controlled.

As the magnification ratio of the radiographic image and the visible light image is the same, the distance between the arbitrary first point and the second point of the inspected object expressed in the radiological image and the distance between the first point and the second point of the arbitrary test object represented by the visible light image The spacing distance between them becomes equal. At this time, the first point and the second point are different points of the subject, are located in the region of interest to be photographed, and may be spaced apart from a minimum distance for determining the magnification. For example, the first point and the second point may be different teeth of the subject.

video Shooting axis  Control

If the imaging axes are the same as the enlargement ratio of the radiographic image and the visible light image, it is possible to set the same spacing distance apart from the above-mentioned two spacing distances.

That is, if the imaging axis is controlled to be the same, the distance and the separation direction between the first point and the second point of the inspected object represented by the radiological image are determined by the distance between the first point and the second point of the inspected object represented by the visible light image, Direction. By using the images thus obtained, the image capturing apparatus 100 according to one embodiment can match the radiological image with the visible light image without additional software processing for matching feature points appearing in the radiological image and the visible light image.

Specifically, in order to control the image capturing axis, the image capturing apparatus 100 according to the embodiment may further include a position change module for changing the image capturing axis of the radiation image and the visible light image.

The position change module may be connected to the generator 110, the secondary collimator 140, and the sensor 120 of the image capturing apparatus 100 according to an embodiment in order to control the image capturing axis of the radiological image. The position change module may comprise an actuator or the like. The displacement module may be coupled directly to the generator 110, the secondary collimator 140 and the sensor 120, or may be coupled to a receiving module that receives them.

The position of the generator 110 and the sensor 120 may be shifted by the operation of the position change module so that the photographing position of the radiation image may be changed. The position change module may also tilt the generator 110 and the sensor 120. Thus, the photographing angle of the radiation image can be changed.

The position change module may be connected to the secondary collimator 140 and the sensor 120 in order to more simply control the photographing axis of the radiation image. The position changing module can change the irradiation direction of the radiation by changing the position or angle of the secondary collimator 140. [ Accordingly, the image capturing apparatus 100 can change the image capturing axis of the radiation image without changing the position of the generator 110.

In order to control the photographing axis of the visible light image, a position change module may be connected to the camera of the image photographing apparatus 100 according to an embodiment. The position change module may comprise an actuator or the like. The location change module may be coupled directly to the camera 150 or coupled to a receiving module that houses the camera 150.

The position of the camera can be moved by the operation of the position change module and the photographing position of the camera can be changed. In addition, the position change module can tilt the camera. Accordingly, the image capturing angle of the camera can be changed.

In order to more easily change the photographing axis of the radiographic image and the photographing axis of the visible light image, the position of the camera 150 can be changed together with the position of the secondary collimator 140.

3 shows an example of a photographing apparatus in which a camera 140 and a secondary collimator 140 are integrally combined. When the camera 150 is coupled to the secondary collimator 140 and provided in the image capturing apparatus, the position and angle of the camera 150 and the secondary collimator 140 are changed together, The shooting axis and the irradiation axis of the secondary collimator 140 are changed together and the shooting axis of the radiation image and the visible light image are changed together. As the imaging axes of the radiological image and the visible light image are changed in the same manner, a separate control for matching the change of the magnification ratio with the imaging axis of the two images can be omitted.

At this time, since the position of the secondary collimator is changed and the position of the camera is changed, the distance between the subject and the camera 150 may be slightly spaced. In this case, the image capturing apparatus 100 may control the camera 150 to adjust the capturing area and the enlargement ratio of the camera so that the capturing area and the enlargement ratio of the subject photographed by the visible light image are kept the same.

When the magnification ratio of the radiographic image and the visible light image is the same as that of the imaging axis, the image position of the first point of the inspected object represented by the radiographic image is the same as the image position of the first point of the inspected object represented by the visible light image, The image position of the second point of the inspected object represented by the radiographic image is the same as the image position of the second point of the inspected object represented by the visible light image.

As each part of the subject has the same image position represented by the radiological image and the visible light image, the image capturing apparatus can omit the software matching process for matching the radiological image with the visible light image. Accordingly, the two images can be merged by simply overlaying one image on one of the radiographic image and the visible light image. An example in which two images are merged is shown in FIG.

FIG. 4 is a diagram illustrating an example of an image display apparatus according to an embodiment of the present invention. Therefore, the patient can more easily recognize the present appearance according to his or her pubic bone structure and the pubic structure and appearance which are changed after the treatment and correction.

In order to further enhance the understanding of the patient, it is also possible to display a matched image as shown in FIG. 4, but also to provide a user interface through which the transparency of each of the heterogeneous images can be adjusted through the control unit.

It is also possible to display a specific image out of the heterogeneous images more clearly or to set a transparency to 100% and 0% so that only one image is displayed.

In another embodiment, the magnification ratio of the visible light image and the radiological image is the same, but the imaging axes are spaced apart from each other by a certain distance, and the virtual axes may be parallel to each other. For example, the visible light image may be an image of the entire head of the patient, or the radiographic image may be an image of the patient's mandible only, which is set as a region of interest. In this case, the photographing area of the visible light image by the camera 150 may be larger than the photographing area of the radiation image by the sensor 120.

That is, for example, only the image of the tooth portion of FIG. 4 is photographed with radiation, but the image having the enlargement ratio and the parallel shooting axis may be used so that the patient can easily recognize the change of the impression of the entire face. In this case, the matching process can be completed simply by moving the radiographic image to a specific position of the visible light image without adjusting the enlargement ratio, and the amount of radiation can be reduced since the radiographic image for the entire head is unnecessary.

5 is a flowchart illustrating an image capturing method of the image capturing apparatus 100 according to an embodiment. A method of acquiring a matching image of a radiation image and a visible light image will be described with reference to FIG.

First, the image capturing apparatus 100 irradiates the radiation (S110). The image capturing apparatus 100 can irradiate the radiation using the generator 110. [

Next, the image capturing apparatus 100 acquires a radiation image by collecting the radiation (S130). The image capturing apparatus 100 can acquire a radiation image by collecting the radiation irradiated to the subject with a sensor.

Next, the image capturing apparatus 100 acquires a visible light image (S150). The image capturing apparatus 100 can acquire a visible light image of a subject using a camera. The enlargement ratio of the radiation image and the visible light image can be controlled so that the magnification ratio of the radiation image obtained by the sensor and the visible light image obtained by the camera is the same.

6 is a flowchart illustrating a method of photographing an image of the image photographing apparatus 100 according to another embodiment. A method of acquiring a matching image of a radiation image and a visible light image will be described with reference to FIG.

First, the image capturing apparatus 100 acquires a visible light image of a subject (S210). The image capturing apparatus 100 can acquire a visible light image of the subject using the camera 150 as described above.

Next, the image capturing apparatus 100 determines a radiation irradiation area (S230). The image capturing apparatus 100 can set a region of interest of the subject for acquiring a radiographic image. In addition, the image capturing apparatus 100 can determine the enlargement ratio of the radiation image.

The image capturing apparatus 100 can set an area of interest in which a radiographic image is to be photographed based on the obtained visible light image of the inspected body, and determine an enlargement ratio of the radiographic image with respect to the inspected body. The region of interest may be a region of interest previously modeled using an image processing algorithm. Or may set a portion of the visible light image as a region of interest according to the user's input.

Next, the image capturing apparatus 100 determines the enlargement ratio of the radiation image and the visible light image (S250). In one embodiment, the imaging device 100 may obtain a selection input of a user that provides a visible light image to a user and selects a portion thereof. Accordingly, the enlargement ratio of the radiation image can be determined so that the region of interest set at the maximum magnification can be photographed based on the visible light image. Then, the image capturing apparatus 100 can determine the enlargement ratio of the visible light image based on the enlargement ratio of the radiation image.

In another embodiment, the image capturing apparatus 100 can determine the enlargement ratio of the radiographic image by increasing the enlargement ratio of the visible light image provided to the user. For example, the user can search for the point of interest of the subject's body point with the camera 150 while checking the visible light image displayed in real time.

When the user determines to set a portion of the subject to be displayed in real time as a visible light image as a region of interest, the user sets a portion of the subject to be displayed as a region of interest of the radiological image and displays the enlargement ratio of the displayed visible light image on the enlargement ratio .

Accordingly, the user of the image capturing apparatus 100 controls the camera 150 so that a specific point of the subject to be captured is visible in the visible light image while checking the visible light image in real time, Axis and the image enlargement ratio can be determined. Then, the image capturing apparatus 100 can determine the image capturing axis and the enlargement ratio of the radiographic image in accordance with the image capturing axis of the visible light image and the enlargement ratio.

Next, a radiation irradiation area is set (S270). The image capturing apparatus 100 controls at least one of the generator 110, the collimator 140, and the sensor 130 to set a radiation irradiation region so as to acquire a radiation image according to the determined region of interest and the enlargement ratio.

Next, the image capturing apparatus 100 acquires the radiation image and the visible light image (S290). Acquisition of radiation image and visible light image can occur at the same time. It is preferable that the visible light image is acquired with respect to the subject at the time when the radiation is irradiated and stored in the memory in order to improve the matching of the radiation image to the visible light image of the subject when the radiation image matches the visible light image. However, according to the embodiment, the visible light image may be obtained before or after the radiation is irradiated and stored in the memory.

7 is a block diagram illustrating a detailed configuration of the image photographing apparatus 100 according to an embodiment. 7, the image capturing apparatus 100 according to one embodiment includes a generator 110, a sensor 120, a controller 130, a collimator 140, a camera 150, a body position module 160 ), A user interface 170, and a communication module 180.

As described above, the generator 110 may employ an X-ray generator or the like that is commonly used as a light source for generating radiation such as X-rays. And may further include an additional collimator or the like as needed.

The sensor 120 may be constructed by adopting a commonly used X-ray sensor for acquiring an image by collecting radiation such as X-rays as described above. The sensor 120 may be a large area sensor for panoramic or CT imaging.

The control unit 130 includes a processor and a memory. The processor controls the image capturing apparatus 100 and performs control for performing the image capturing method described above. For example, the control unit 130 performs control so that the magnification ratio and the expression position of the subject represented by the radiation image obtained by the sensor and the visible light image obtained by the camera are the same. The memory includes temporary and non-temporary data necessary for the imaging apparatus to operate. The magnification of the image and the location data of the generator 110 and the sensor 120 may be included in the memory depending on the image shooting mode of the image.

The collimator 140 shields a part of the radiation irradiated from the generator to the subject, and sets the irradiation direction of the radiation irradiated from the generator. The camera 150 can take a visible light image of the inspected object. As described above, the collimator and the camera 150 may be integrally combined.

The subject position module 160 receives the subject to be photographed, thereby specifying the position of the subject to be photographed.

The user interface 170 may be a conventional input device and an output device as the interface means between the image capturing apparatus 100 and the user. The communication module 180 may be a conventional wired / wireless communication module as an interface between the image capturing apparatus 100 and an external device. The user interface 170 and the communication module 180 may be omitted as optional components.

FIG. 8 is a block diagram illustrating a configuration of a video image capturing system 1000 having a video image capturing apparatus 100 according to an embodiment. The image capturing system 1000 according to one embodiment includes the image capturing apparatus 100 of FIG. 6, a database 200 and a control unit 300, and further includes a user interface 300 and a communication module 400 .

The image capturing system 1000 further includes a database 200, and can store image data of an object to be captured acquired from the image capturing apparatus 100, with respect to an object to be captured. For example, when used in a hospital, a doctor can designate and store a patient in a database by taking an X-ray image of the patient.

The image capturing method according to the embodiment described above can be implemented in the form of a program command which can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and constructed according to the embodiments, or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like.

Each of the drawings referred to in the description of the foregoing embodiments is merely one embodiment for convenience of description, and items, contents and images of the information displayed on each screen can be modified and displayed in various forms.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (20)

A generator for irradiating radiation;
A collimator for shielding a part of the radiation irradiated from the generator to the subject;
A sensor through which the radiation passing through the collimator is incident;
A camera for acquiring a visible light image of the subject; And
A controller for controlling at least one of the generator, the sensor, the collimator, and the camera;
Wherein the control unit controls the magnification ratio of the subject represented by the radiation image obtained by the sensor and the visible light image acquired by the camera to be the same.
The method according to claim 1,
Wherein a first point and a second point of the inspected object are respectively expressed in the radiation image and the visible light image,
Wherein a distance and a direction in which the second point is spaced apart from the first point in the radiographic image are equal to a distance and a direction in which the second point is spaced apart from the first point in the visible light image,
Wherein the first point and the second point are different points of the subject.
The method according to claim 1,
The image position of the first point of the subject represented by the radiographic image is the same as the image position of the first point of the subject represented by the visible light image,
The image position of the second point of the subject represented by the radiographic image is the same as the image position of the second point of the subject represented by the visible light image,
Wherein the first point and the second point are different points of the subject.
The method according to claim 1,
Wherein the visible light image by the camera is acquired when the radiation is irradiated by the generator and is stored in a memory.
The method according to claim 1,
Wherein the control unit controls the camera such that an enlargement ratio of the visible light image is equal to an enlargement ratio of the radiation image when at least one of the generator and the sensor is controlled to change the enlargement ratio of the radiation image.
The method according to claim 1,
Wherein the photographing area of the visible light image by the camera is smaller than the photographing area of the radiation image by the sensor.
The method according to claim 6,
The camera being attached to the collimator,
Wherein the photographing area of the camera is adjusted so that the photographing area of the visible light image is maintained even if the position of the collimator is changed and the position of the camera is changed.
The method according to claim 6,
Wherein the photographing area of the camera is adjusted so that the photographing area of the visible light image is enlarged when the photographing area of the radiation image is enlarged.
The method according to claim 1,
The camera being attached to the collimator,
Wherein the enlargement ratio of the camera is adjusted so that the enlargement ratio of the visible light image is maintained even if the position of the collimator is changed and the position of the camera is changed.
The method according to claim 1,
Wherein at least one of the generator and the sensor is controlled such that when the magnification of the visible light image is changed by the camera, the radiation image is acquired at an enlargement ratio of the visible light image.
The method according to claim 1,
Wherein the control unit matches the visible image and the radiation image to generate a single image for the subject.
A generator for irradiating the subject with radiation;
A sensor which receives radiation transmitted through the inspected object from the generator;
A camera for acquiring a visible light image of the subject; And
Further comprising: a control unit for controlling at least one of the generator, the sensor, and the camera;
Wherein the control unit controls the magnification ratio of the subject to be equal to the radiation image acquired by the sensor and the visible light image acquired by the camera.
An image capturing method performed by a video image capturing apparatus,
Irradiating the subject with radiation using a generator; And
Acquiring a radiation image by collecting the radiation irradiated to the subject with a sensor; And
Acquiring a visible light image of the subject using a camera,
Wherein the magnification ratio of the radiation image obtained by the sensor and the visible light image obtained by the camera is the same.
14. The method of claim 13,
Prior to the step of irradiating the subject with radiation using the generator,
Obtaining a visible light image of the subject;
Determining an enlargement ratio of the radiation image to the subject based on the visible light image; And
Wherein the step of determining the enlargement ratio of the visible light image is performed based on the enlargement ratio of the radiation image.
14. The method of claim 13,
Prior to the step of irradiating the subject with radiation using the generator,
Obtaining a visible light image of the subject;
Determining an enlargement ratio of the visible light image to the subject based on the visible light image; And
And determining an enlargement ratio of the radiation image based on an enlargement ratio of the visible light image.
14. The method of claim 13,
Wherein the visible light image is a subject image at a time when the radiation is irradiated.
14. The method of claim 13,
And generating a single image for the subject by matching the visible image with the radiation image.
Obtaining a visible light image of a subject;
Determining a radiation irradiation area for the subject based on the visible light image;
Determining an enlargement ratio of the radiographic image and the enlargement ratio of the visible light image to the inspected object based on the visible light image;
Setting a radiation irradiation area for the subject using a collimator according to the determined radiation irradiation area;
Irradiating the subject with radiation; And
And a step of acquiring a radiation image by collecting the radiation irradiated on the object to be examined through the collimator with a sensor,
A visible light image of the subject is acquired by the camera when the radiation is irradiated,
Wherein the enlargement ratio of the radiographic image to the subject is equal to the enlargement ratio of the visible light image.
18. A computer-readable recording medium on which a computer program for performing the method of any one of claims 13 to 18 is recorded.
In a video imaging system,
A video shooting device according to claim 1; And
And a database for storing the image photographed by the image photographing device together with the subject information,
Wherein the image of the subject is stored in the database.

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