CN113662568A - DR fusion imaging system and method - Google Patents
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Abstract
The invention discloses a DR fusion imaging system and a method, the system comprises an information acquisition device and an information processing device, the information acquisition device comprises a DR imaging mechanism, a surface geometry acquisition mechanism and a visible light imaging mechanism, the DR imaging mechanism generates a DR image of a detected object, the surface geometry acquisition mechanism generates a three-dimensional surface geometry model of the detected object, and the visible light imaging mechanism generates a visible light image of the detected object; the information processing apparatus generates a depth image matching the DR image based on the three-dimensional surface geometric model and the DR image, generates a base material decomposition image based on the depth image and the DR image, and generates a DR-enhanced image based on the base material decomposition image. The method has the capability of decomposing substances, can obtain the decomposed images of the base materials, effectively improves the DR image quality, improves the detection capability of early defects, and reduces the radiation dose of DR imaging.
Description
Technical Field
The invention relates to the field of X-ray imaging, in particular to a DR fusion imaging system and method.
Background
The material decomposition is one of the research hotspots in the field of X-ray imaging at present, the quantitative analysis of materials can be realized by utilizing the material decomposition, the quality of DR images is improved, the capability of early-stage defect detection is improved, and the method has important application value in the fields of medical imaging, safety inspection, nondestructive detection and the like. Dual-energy CT and multi-energy CT have the ability to decompose matter. The dual-energy CT uses two X-rays with different energy spectrums to scan and image a target to be detected, and compared with the traditional CT imaging technology under the traditional single energy spectrum, the dual-energy CT can use two attenuation information to realize the decomposition of a base material; the multi-energy CT realizes the detection of photons in a plurality of energy sections by utilizing the photon counting detector, can realize the decomposition of more base materials compared with the dual-energy CT, and has more important application value.
The DR imaging system has the advantages of low cost, convenient and flexible use and the like, is widely applied to the fields of medical imaging, safety inspection, nondestructive testing and the like, but is limited by the digital X-ray DR imaging principle, and no DR imaging system and method capable of realizing material decomposition are available at present.
Disclosure of Invention
The technical problem to be solved by the present disclosure is to provide a DR fusion imaging system with material decomposition capability, and to realize DR image enhancement based on material decomposition, aiming at the drawbacks involved in the background art.
The invention adopts the following technical scheme for solving the technical problems:
according to one aspect of the present disclosure, there is provided a DR fusion imaging system including an information acquisition apparatus and an information processing apparatus; the information acquisition device comprises a DR imaging mechanism, a surface geometry acquisition mechanism and a visible light imaging mechanism, wherein the DR imaging mechanism is configured to generate a DR image of an object to be detected, the surface geometry acquisition mechanism is configured to generate a three-dimensional surface geometry model of the object to be detected, and the visible light imaging mechanism is configured to generate a visible light image of the object to be detected; the information processing device is in data communication with the information acquisition device and is configured to acquire a visible light image and a three-dimensional surface geometric model of the detected object provided by the surface geometric acquisition mechanism and a DR image provided by the DR imaging mechanism, and is further configured to generate a depth image matching the DR image based on the three-dimensional surface geometric model and the DR image, and is further configured to generate a base material decomposition image based on the depth image and the DR image.
In the DR fusion imaging system, wherein the surface geometry acquisition mechanism is configured as an active surface geometry acquisition mechanism to generate a three-dimensional surface geometry model.
In the DR fusion imaging system, the DR imaging mechanism is configured to receive the three-dimensional surface geometric model, adjust the three-dimensional surface geometric model according to the collimator shape, emit X-rays to irradiate the detected object and detect the X-rays penetrating the detected object to generate a DR image.
The DR fusion imaging system is an imaging system for including living organisms and articles, and the detected object includes the living organisms and the articles.
The DR fusion imaging system also comprises a voice prompt device which is in data communication with the information processing device and is used for prompting whether the posture of the detected object is correct or not and prompting whether the identity of the detected object is correct or not when the detected object is a person.
In the DR fusion imaging system, the information acquisition device further comprises a certificate information acquisition mechanism, the certificate information acquisition mechanism is in data communication with the information processing device, and when the detected object is a human body, the certificate information acquisition mechanism acquires the certificate information of the detected person, and the information processing device is further configured to verify the identity of the detected person based on the certificate information of the detected person and the visible light image and/or the three-dimensional surface geometric model.
In the DR fusion imaging system, the information processing device is further configured to identify the pose of the detected object according to the visible light image and the three-dimensional surface geometric model of the detected object, further perform identity verification when the detected object is a human body, not start DR imaging if the identity verification fails, perform language prompting through a voice prompting device, correct the pose of the detected object and then start DR imaging if the pose does not meet the detection requirement; when the detected object is an article or other organisms, if the pose does not meet the detection requirement, the pose of the detected object is corrected, and then DR imaging is started.
In the DR fusion imaging system, wherein the information processing apparatus is further configured to generate a DR enhanced image based on the basis material decomposition image.
In the DR fusion imaging system, the system further comprises an image display device, wherein the image display device is in data communication with the information processing device and can display the three-dimensional surface geometric model and/or the visible light image and/or the DR image and/or the depth image and/or the base material decomposition image and/or the DR enhanced image.
According to another aspect of the present disclosure, there is provided a DR-based fusion imaging method for imaging and processing using the above DR fusion imaging system, the method comprising the steps of:
step 1: the detected object enters an appointed detection area and the pose is adjusted to wait for detection, and when the detected object is a human body, the certificate is placed on the certificate information acquisition unit;
step 2: the surface geometry acquisition mechanism generates a three-dimensional surface geometry model and sends the three-dimensional surface geometry model to the information processing device; the visible light imaging mechanism generates a visible light image of the detected object and sends the visible light image to the information processing device; when the detected object is a human body, the certificate information acquisition unit acquires the certificate information of the detected person and sends the certificate information to the information processing device;
and step 3: when the detected object is a human body, the identity of the detected person is verified: the information processing device processes the visible light image and the three-dimensional surface geometric model, compares and checks the visible light image and the three-dimensional surface geometric model with certificate information of a detected person, and sends an identity verification result to the image display device and the voice device;
and 4, step 4: the information processing device processes the visible light image and the three-dimensional surface geometric model and identifies and judges the pose of the detected object;
and 5: the DR imaging mechanism receives the three-dimensional surface geometric model and adjusts the shape of a collimator in the DR imaging mechanism according to the three-dimensional surface geometric model, then emits X rays to irradiate the detected object and detects the X rays penetrating through the detected object to generate a DR image;
step 6: the information processing device registers the three-dimensional surface geometric model and the DR image to obtain a depth image matched with the DR image;
and 7: the information processing device utilizes the depth image and the DR image to carry out substance decomposition to obtain a base material decomposition image;
and 8: the information processing device utilizes the base material decomposition image to enhance the part DR image to generate a DR enhanced image;
and step 9: the image display device displays a three-dimensional surface geometric model and/or a visible light image and/or a DR image and/or a depth image and/or a base material decomposition image and/or a DR enhanced image of the detected object.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the invention integrates surface geometric acquisition, visible light imaging, DR imaging and information processing and analyzing methods, has the capability of substance decomposition, can obtain a base material decomposition image, can effectively improve the quality of the DR image, improve the detection capability of early defects, can effectively avoid extra radiation of the DR imaging, and reduce the radiation dose of the DR imaging.
Drawings
FIG. 1 is a schematic diagram of a DR fusion imaging system showing portions of the DR fusion imaging system and their connections according to one embodiment of the present disclosure;
fig. 2 is a flowchart of a method for fusion imaging of human body DR according to an embodiment of the present disclosure.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings.
In the following embodiments, the present invention is illustrated by taking a DR fusion imaging system in which the detected object is a human body as an example, but this should not be construed as limiting the present invention.
One embodiment of the DR fusion imaging system of the present disclosure is shown in fig. 1, which is implemented as a DR fusion imaging system for human body detection, including an information acquisition apparatus, an information processing apparatus 20, image display apparatuses 31 and 32, and voice prompt apparatuses 41 and 42.
The information acquisition device includes: a DR imaging mechanism 11 capable of generating a DR image of the object to be detected; a surface geometry acquisition mechanism 12 capable of generating a three-dimensional surface geometry model of the inspected object; a visible light imaging mechanism 13 capable of generating a visible light image of the object to be detected; also included is a credential information collection mechanism 14 that is capable of acquiring identity information of the person being tested, including a photograph of the head. The DR imaging mechanism 11 may be configured to receive the three-dimensional surface geometric model and adjust the collimator shape accordingly and emit X-rays to irradiate the inspection object and detect X-rays penetrating the inspection object to generate a DR image. The DR imaging mechanism 11 may be, for example, a DR human body imager 11. The surface geometry acquisition mechanism 12 may be, for example, a depth camera 12. The depth camera 12 may be mounted on the DR imaging mechanism 11, or may be located anywhere that a geometric model of the surface of the human body can be acquired. The visible light imaging mechanism 13 may be, for example, a wide-angle camera 13. The wide-angle camera 13 may be mounted on the DR imaging mechanism 11, the surface geometry capturing mechanism 12, or any position where a human body image can be captured, for example.
The information processing device 20 is in data communication with an information acquisition device. Specifically, the information processing apparatus 20 can obtain the above-described DR image, three-dimensional surface geometric model, visible light image, and the identity information of the person to be detected. The information processing device 20 may also send information to the information collecting device, for example instructing the information collecting device to start collecting DR images and/or three-dimensional surface geometry models and/or visible light images.
The information processing device 20 is also in data communication with image display devices 31 and 32. The worker-side image display device 31 is provided in the studio, and the equipment-side image display device 32 is provided in the equipment room, so that the worker can view the detection information and images.
The information processing device 20 is also in data communication with voice prompt devices 41 and 42. The voice prompt device 41 at the staff end is arranged in a studio, and the voice prompt device 42 at the equipment end is arranged in the equipment room, so as to be used for voice prompt or communication between staff and detected personnel.
The information processing apparatus 20 can be configured to recognize the pose of the detected person based on the visible light image and the three-dimensional human body surface geometric model, correct the pose of the detected person if the pose does not meet the detection requirement, and then restart DR imaging.
The information processing apparatus 20 can be configured to verify the identity of the detected person based on the document information of the detected person and the visible light image and/or the three-dimensional surface geometric model, not to start DR imaging if the authentication fails, and to perform language prompting.
The information processing apparatus 20 can be configured to generate a depth image matching the DR image based on the three-dimensional surface geometric model and the DR image.
The information processing apparatus 20 can be configured to generate a base material decomposition image based on the depth image and the DR image.
The information processing apparatus 20 can be configured to generate a DR enhanced image based on the base material decomposition image.
The present disclosure also provides a DR fusion imaging method, which uses the above DR fusion imaging system for imaging. In the following description, embodiments of the method will be specifically described, in which the above-mentioned DR fusion imaging system reference numeral 1 is used, but it should be understood that the use of these reference numerals is not limiting, but merely to facilitate an understanding of the technical solutions. In other words, the following method is not limited to being performed using the aforementioned DR fusion imaging system and its components.
The method shown in fig. 2 can realize material decomposition and enhance DR images, can perform posture recognition and identity verification on detected persons, and can automatically adjust a collimator of the DR imaging instrument 11, and the method includes the following steps:
step 1: the detected person puts the certificate on the certificate information acquisition unit 14, enters a designated detection area and adjusts the pose to wait for detection;
step 2: the depth camera 12 generates a human epidermis geometric model and sends the human epidermis geometric model to the information processing device 20; the wide-angle camera 13 generates a visible light image of the detected object and transmits it to the information processing apparatus 20; the certificate information acquisition unit 14 acquires electronic information including a head photo of the detected person and sends the electronic information to the information processing device 20;
and step 3: the information processing device 20 processes the visible light image and the human epidermis geometric model, compares and checks the visible light image and the human epidermis geometric model with certificate information of a detected person, outputs identity information of the detected person through the studio side image display device 31, and carries out language prompt through the voice devices 41 and 42;
and 4, step 4: the information processing device 20 processes the visible light image and the human epidermis geometric model, and identifies and judges the pose of the detected person, (1) if the pose of the detected person meets the detection requirement, the step 5 is carried out; (2) if the pose of the inspected person does not meet the detection requirement, transmitting pose information to the image display devices 31 and 32 and the voice prompt devices 41 and 42 to prompt the inspected person to correct the pose, rescanning after the inspected person adjusts the pose, and repeating the step 4;
and 5: the DR human body imager 11 receives the human epidermis geometric model and adjusts the shape of a collimator in the DR human body imager 11 according to the human epidermis geometric model, then emits X rays to irradiate the detected person and detects the X rays penetrating through the detected person to generate a DR image;
step 6: the information processing device 20 registers the human body surface geometric model and the DR image to obtain a depth image matched with the DR image;
and 7: the information processing device 20 performs substance decomposition using the depth image and the DR image to obtain a base material decomposition image, wherein one base material combination scheme is to select bone tissue and soft tissue as two base materials;
and 8: the information processing apparatus 20 enhances the DR image with the basis material decomposed image to generate a DR enhanced image;
and step 9: the image display device 41 and/or the image display device 42 displays the identity information of the detected person and/or a human epidermis geometric model and/or a visible light image and/or a DR image and/or a depth image and/or a base material decomposition image and/or a DR enhanced image.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A DR fusion imaging system is characterized in that the DR fusion imaging system comprises an information acquisition device and an information processing device, the information acquisition device comprises a DR imaging mechanism, a surface geometry acquisition mechanism and a visible light imaging mechanism, the DR imaging mechanism is configured to generate a DR image of an object to be detected, the surface geometry acquisition mechanism is configured to generate a three-dimensional surface geometry model of the object to be detected, and the visible light imaging mechanism is configured to generate a visible light image of the object to be detected; the information processing device is in data communication with the information acquisition device and is configured to acquire three-dimensional surface geometry data provided by the surface geometry acquisition mechanism, a visible light image provided by the visible light imaging mechanism, and a DR image provided by the DR imaging mechanism, and is further configured to generate a depth image matching the DR image based on the three-dimensional surface geometry model and the DR image, and is further configured to generate a base material decomposition image based on the depth image and the DR image.
2. The DR fusion imaging system of claim 1, wherein the surface geometry acquisition mechanism is configured as an active surface geometry acquisition mechanism to generate a three-dimensional surface geometry model.
3. The DR fusion imaging system of claim 1, wherein the DR imaging mechanism is configured to receive the three-dimensional surface geometry model and adjust it to the collimator shape and emit X-rays to illuminate the inspected object and detect X-rays penetrating the inspected object to generate a DR image.
4. The DR fusion imaging system of claim 1, wherein the DR fusion imaging system is an imaging system for including living organisms and articles, and the object under inspection includes living organisms and articles.
5. The DR fusion imaging system of claim 1 further comprising voice prompting means in data communication with the information processing means for prompting whether the posture of the detected object is correct or not and whether the identity of the detected object is correct or not when the detected object is a human body.
6. The DR fusion imaging system of claim 1 wherein the information acquisition device further comprises a credential information acquisition mechanism in data communication with an information processing device that acquires credential information of a person under inspection when the object under inspection is a human body, the information processing device further configured to verify the identity of the person under inspection based on the credential information of the person under inspection and the visible light image and/or the three-dimensional surface geometry model.
7. The DR fusion imaging system of claim 1 wherein the information processing apparatus is further configured to identify the pose of the detected object based on the visible light image and the three-dimensional surface geometry model of the detected object, further perform authentication when the detected object is a human body, not enable DR imaging if the authentication fails, and perform language prompting via the voice prompting apparatus, modify the pose of the detected object and then enable DR imaging if the pose does not meet the detection requirements; when the detected object is an article or other organisms, if the pose does not meet the detection requirement, the pose of the detected object is corrected, and then DR imaging is started.
8. The DR fusion imaging system of claim 1 wherein the information processing apparatus is further configured to generate a DR enhanced image based on the basis material decomposition image.
9. The DR fusion imaging system of claim 1 further comprising an image display device in data communication with the information processing device, the image display device capable of displaying a three-dimensional surface geometry model and/or a visible light image and/or a DR image and/or a depth image and/or a ground material decomposition image and/or a DR enhanced image.
10. An imaging method based on the DR fusion imaging system of any one of claims 1 to 9, comprising the steps of:
step 1: the detected object enters an appointed detection area and the pose is adjusted to wait for detection, and when the detected object is a human body, the certificate is placed on the certificate information acquisition unit;
step 2: the surface geometry acquisition mechanism generates a three-dimensional surface geometry model and sends the three-dimensional surface geometry model to the information processing device; the visible light imaging mechanism generates a visible light image of the detected object and sends the visible light image to the information processing device; when the detected object is a human body, the certificate information acquisition unit acquires the certificate information of the detected person and sends the certificate information to the information processing device;
and step 3: when the detected object is a human body, the identity of the detected person is verified: the information processing device processes the visible light image and the three-dimensional surface geometric model, compares and checks the visible light image and the three-dimensional surface geometric model with certificate information of a detected person, and sends an identity verification result to the image display device and the voice device;
and 4, step 4: the information processing device processes the visible light image and the three-dimensional surface geometric model and identifies and judges the pose of the detected object;
and 5: the DR imaging mechanism receives the three-dimensional surface geometric model and adjusts the shape of a collimator in the DR imaging mechanism according to the three-dimensional surface geometric model, then emits X rays to irradiate the detected object and detects the X rays penetrating through the detected object to generate a DR image;
step 6: the information processing device registers the three-dimensional surface geometric model and the DR image to obtain a depth image matched with the DR image;
and 7: the information processing device utilizes the depth image and the DR image to carry out substance decomposition to obtain a base material decomposition image;
and 8: the information processing device utilizes the base material decomposition image to enhance the DR image to generate a DR enhanced image;
and step 9: the image display device displays a three-dimensional surface geometric model and/or a visible light image and/or a DR image and/or a depth image and/or a base material decomposition image and/or a DR enhanced image of the detected object.
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