CN106383132B - Radiation checking system and method - Google Patents
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- CN106383132B CN106383132B CN201610903882.1A CN201610903882A CN106383132B CN 106383132 B CN106383132 B CN 106383132B CN 201610903882 A CN201610903882 A CN 201610903882A CN 106383132 B CN106383132 B CN 106383132B
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- 230000005855 radiation Effects 0.000 title claims abstract description 205
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/203—Measuring back scattering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
- G01V5/222—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays measuring scattered radiation
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Abstract
The invention discloses a kind of radiation checking system and methods.Wherein, the radiation imaging apparatus in radiation checking system can scan by column object to be detected, to obtain multiple column scan images of object to be detected.Visual light imaging device is used to carry out optical imagery to object to be detected during radiation monitoring, to obtain multiple optical imagerys of object to be detected.Images match processor establishes the corresponding relationship between the column scan image and optical imagery that correspond to same object to be detected based on scheduled matching rule.In this way, can synchronously show corresponding optical imagery when showing radiation image, security staff is facilitated quickly to determine object to be detected corresponding to radiation image.
Description
Technical field
The present invention relates to radiography fields, more particularly to a kind of radiation checking system and method.
Background technique
The large-scale target such as vehicle and cargo is checked using radiant image be comparative maturity safety check technology, according to
Image-forming principle is different, mainly there is ray transmission imagery and ray scattering imaging two major classes.In general, transillumination imaging system is by least one
A radiation source, at least one set of ray for issuing radiation source are collimated into the collimator of fladellum, at least one column positioned at scanned
The detector array of the body other side, at least one set of for detecting, mobile target is scanned partially to reach scan position sensor unit
Composition, has many companies both at home and abroad and releases all kinds of vehicle/cargo scanning systems based on transmission imaging.Be scattering into seems to pass through
The photon that scatters out from tested substance is measured object to be imaged.
Transmission image is to be detected and formed by the detector positioned at the object other side after ray passes through tested object decaying
Image, the transmission signal of ray reacted the information such as density and the thickness of illuminated object, can show the internal structure of object；It dissipates
Penetrating image is to be formed by checking matter close to the ray signal that the object scatter of detector direction certain depth comes out, due to fried
The Compton scattering of ray is stronger in the low atomic numbers substance such as medicine, drugs, and signal is stronger in the picture for corresponding part, this
One characteristic is an important factor for backscattering technique obtains safety check application.
Due to image-forming principle difference, the visible light frequency bands image capture device such as transmission, dispersion image and camera, camera is obtained
The optical imagery taken has significant difference.Briefly, transmission, dispersion image can only reflect the appearance profile of checking matter, can not
Obtain in optical imagery as human eye it is observed that the surface details feature such as object color, texture, therefore security staff is difficult
Transmission, dispersion image are mapped with practical checking matter, this can form safety check process and adversely affect, and especially vehicular is swept
It retouches equipment to complete after scanning, in the case where tested vehicle or cargo do not have specific identifier (such as license plate) or sequence, according to scanning
Image can have certain difficulty to position suspect object, such as sweep conducive to back scattering scanning device to parked vehicle along the street
Figure safety check is looked into after retouching again.Tested vehicle/cargo image is bad corresponding with actual vehicle, it will influences subsequent check by hand, afterwards
A series of enforcing laws such as retrospect.
Thus, it is desirable to a kind of radiation image-forming system that can fast and effeciently determine object to be detected.
Summary of the invention
The main purpose of the present invention is to provide the radiant image systems that one kind can fast and effeciently determine object to be detected
System and method.
According to an aspect of the invention, there is provided a kind of radiation checking system, for having between object to be detected
Radiation monitoring is carried out to it in the case where having relative motion, which includes: radiation imaging apparatus, detected for scanning by column
Object, to obtain multiple column scan images of object to be detected, the direction of column is substantially perpendicular to the direction of relative motion；It can be seen that
Photoimaging equipment has fixed relative positional relationship with radiation imaging apparatus during radiation monitoring, for examining in radiation
During looking into, optical imagery is carried out to object to be detected, to obtain one or more optical imagerys of object to be detected；Image
With processor, for establishing the column scan image and optical imagery that correspond to same object to be detected based on scheduled matching rule
Between corresponding relationship.
Preferably, images match processor can scanning imaging time and optical picture based at least one column scan image
The shooting time of picture, or when forming at least one column scan image based on radiation imaging apparatus between object to be detected
It closes the second relative position when one relative positional relationship and visual light imaging device form optical imagery between object to be detected
System, establishes the corresponding relationship between column scan image and optical imagery.
Preferably, images match processor can integrate multiple column scan images based on the first relative positional relationship, with
To imaging scale close to actual reconstruction scan image；And/or images match processor is based on the second relative positional relationship
Multiple optical imagerys are integrated, to obtain imaging scale close to actual reconstruction optical imagery.
Preferably, which can also include: positioning device, be used for during radiation monitoring, with third
Frequency acquisition acquires relative displacement data of the radiation imaging apparatus relative to object to be detected, wherein radiation imaging apparatus is with the
One imaging frequency scans by column object to be detected, it is seen that photoimaging equipment with the second imaging frequency to object to be detected into
Row optical imagery, acquired before and after the scanning imaging time of column scan image based on positioning device one of images match processor
Or multiple relative displacement data, the first relative positional relationship is determined, based on positioning device before and after the shooting time of optical imagery
One or more relative displacement data of acquisition, determine the second relative positional relationship.
Preferably, when third frequency acquisition is less than the first imaging frequency, images match processor is to multiple relative displacements
Data carry out interpolation calculation, to obtain the first relative positional relationship corresponding to each column scan image, and/or work as third
When frequency acquisition is equal to the first imaging frequency, images match processor determines the first opposite position corresponding to multiple column scan images
It sets relationship and multiple relative displacement data corresponds, and/or when third frequency acquisition is greater than the first imaging frequency, figure
As matched-field processors extract multiple relative displacement data, to obtain the first opposite position corresponding to each column scan image
Set relationship.
Preferably, radiation imaging apparatus setting can be on moveable platform, and radiation imaging apparatus can be with removable
Platform moves integrally, and positioning device may include encoder, and encoder is arranged at the mobile mechanism of moveable platform.
Preferably, start to scan by column object to be detected in response to radiation imaging apparatus, encoder starts counting, wherein
The every mobile preset distance of moveable platform, encoder are once counted.
Preferably, positioning device can acquire positioning device relative to the relatively fast of object to be detected with third frequency acquisition
Degree, to obtain one or more relative velocity datas, according to third frequency acquisition and relative velocity data, determines one or more
A relative displacement data.
Preferably, it is seen that photoimaging equipment is line-scan digital camera, for carrying out optical imagery to object to be detected by column, when the
When three frequency acquisitions are less than the second imaging frequency, images match processor carries out interpolation calculation to relative displacement data, to obtain
Second relative positional relationship corresponding to each optical imagery, and/or when third frequency acquisition is equal to the second imaging frequency
When, images match processor determines the first relative positional relationship corresponding to multiple optical imagerys and multiple relative displacement data one
One is corresponding, and when third frequency acquisition is greater than the second imaging frequency, images match processor extracts relative displacement data,
To obtain the second relative positional relationship corresponding to each optical imagery.
Preferably, it is seen that photoimaging equipment is area array cameras or photographic device, it is seen that photoimaging equipment in advance to it is tested
It surveys object to be imaged away from the object of reference at visual light imaging device same distance, to obtain referring to image, images match processing
Actual size of the device based on object of reference and the display size referring to the object of reference in image, determine imaging scale, images match
Position of the optical center line of visual light imaging device shooting relative to object to be detected when processor determination forms optical imagery,
And the second relative positional relationship corresponding to each column image in optical imagery is determined based on the position and imaging scale.
Preferably, it is seen that the Exit positions or visible of the flying spot of radiation imaging apparatus are arranged in photoimaging equipment
Photoimaging equipment is positioned away from the Exit positions preset distance of the flying spot of radiation imaging apparatus.
Preferably, which can also include: GPS positioning device, for obtaining during radiation monitoring
The geographical location information of radiation imaging apparatus；And/or mark identification equipment, for during radiation monitoring, identification to be detected
The identification information of object.
According to another aspect of the present invention, additionally provide a kind of radiation testing method, for object to be detected it
Between have relative motion in the case where radiation monitoring is carried out to it, this method comprises: using radiation imaging apparatus scan by column by
Detection object, to obtain multiple column scan images of object to be detected, the direction of column is substantially perpendicular to the direction of relative motion；
During radiation monitoring, optical imagery is carried out to object to be detected using visual light imaging device, to obtain object to be detected
One or more optical imagerys, wherein visual light imaging device and radiation imaging apparatus have solid during radiation monitoring
Fixed relative positional relationship；The column scan image and optics for corresponding to same object to be detected are established based on scheduled matching rule
Corresponding relationship between image.
It is preferably based on scheduled matching rule and establishes the column scan image for corresponding to same object to be detected and institute
The step of stating the corresponding relationship between optical imagery may include: scanning imaging time based at least one column scan image and
The shooting time of optical imagery, or when forming at least one column scan image based on radiation imaging apparatus with object to be detected it
Between the first relative positional relationship and visual light imaging device it is second opposite between object to be detected when forming optical imagery
Positional relationship establishes the corresponding relationship between column scan image and optical imagery.
Preferably, this method can also include: to integrate multiple column scan images based on the first relative positional relationship, to obtain
Imaging scale is close to actual reconstruction scan image；And/or multiple optical imagerys are integrated based on the second relative positional relationship,
To obtain imaging scale close to actual reconstruction optical imagery.
Preferably, radiation imaging apparatus can scan by column object to be detected with the first imaging frequency, optical picture
Picture imaging device can carry out optical imagery to object to be detected with the second imaging frequency, and this method can also include: to radiate
Relative displacement number in checking process using positioning device with third frequency acquisition acquisition positioning device relative to object to be detected
According to；Based on one or more relative displacement data that positioning device acquires before and after the scanning imaging time of column scan image, really
Fixed first relative positional relationship, the opposite position of one or more acquired before and after the shooting time of optical imagery based on positioning device
Data are moved, determine the second relative positional relationship.
Preferably, when third frequency acquisition is less than the first imaging frequency, interpolation meter is carried out to multiple relative displacement data
It calculates, to obtain the first relative positional relationship corresponding to each column scan image, and/or when third frequency acquisition is equal to the
When one imaging frequency, the first relative positional relationship corresponding to multiple column scan images and multiple relative displacement data are determined one by one
It is corresponding, and/or when third frequency acquisition is greater than the first imaging frequency, multiple relative displacement data are extracted, with
Obtain the first relative positional relationship corresponding to each column scan image.
Preferably, it is seen that photoimaging equipment is line-scan digital camera, for carrying out optical imagery to object to be detected by column, when the
When three frequency acquisitions are less than the second imaging frequency, interpolation calculation is carried out to relative displacement data, to obtain each optical imagery institute
Corresponding second relative positional relationship, and/or when third frequency acquisition is equal to the second imaging frequency, determine multiple optics
First relative positional relationship corresponding to image and multiple relative displacement data correspond, when third frequency acquisition is greater than second
When imaging frequency, relative displacement data are extracted, to obtain the second relative positional relationship corresponding to each optical imagery.
Preferably, it is seen that photoimaging equipment be area array cameras or photographic device, this method this may include: in advance to quilt
Detection object is imaged away from the object of reference at visual light imaging device same distance, to obtain being based on object of reference referring to image
Actual size and display size referring to the object of reference in image, determine imaging scale, can when determining and forming optical imagery
Position of the optical center line of light-exposed imaging device shooting relative to object to be detected, and determined based on the position and imaging scale
Second relative positional relationship corresponding to each column image in optical imagery.
To sum up, radiation checking system of the invention and method are mainly in the process for carrying out radiant image to object to be detected
In, while visual light imaging is carried out to object to be detected, then by the radiation image obtained by radiation scanning and by visible
The optical imagery that light is imaged is mapped.In this way, can synchronously show corresponding light when showing radiation image
Image is learned, security staff is facilitated quickly to determine object to be detected corresponding to radiation image.
Detailed description of the invention
Disclosure illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the disclosure above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in disclosure illustrative embodiments, identical reference label
Typically represent same parts.
Fig. 1 shows the schematic block diagram of the structure of radiation checking system according to an embodiment of the invention.
Fig. 2 shows the structural schematic diagrams of radiation imaging apparatus when using transmission-type radiant image.
Fig. 3 shows the structural schematic diagram of radiation imaging apparatus when being imaged using back-scatter radiation.
Fig. 4 A shows the primary radiation image under direct ranging.
Fig. 4 B shows the original optical image under direct ranging.
Fig. 4 C shows the image after rebuilding to radiation image shown in Fig. 4 A.
Fig. 4 D shows the optical imagery after rebuilding to optical imagery shown in Fig. 4 B.
Fig. 5 A shows the primary radiation image under indirect distance measuring.
Fig. 5 B shows the image after rebuilding to radiation image shown in Fig. 5 A.
Fig. 6 shows the schematic diagram of a kind of simultaneous display radiation image and optical imagery.
Fig. 7 shows the schematic diagram that the position of radiation imaging apparatus is shown in map.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that this disclosure will be more thorough and complete, and can be by the disclosure
Range is completely communicated to those skilled in the art.
As it was noted above, radiation image obtained from being scanned using radiography to objects to be detected such as vehicles
It can only reflect the profile information of object to be detected, the minutias such as color, the texture of object to be detected cannot be obtained, this makes phase
Pass personnel are difficult for scan image and practical object to be detected to be mapped.For example, in use vehicular scanning device to along the street
When parked car carries out radiation scanning imaging, the radiation image of many vehicles can be obtained.After the completion of scanning, to radiation image
When being checked, it can not be mapped, this undoubtedly will affect by relevant staff according only to radiation image with actual vehicle
A series of enforcing laws such as subsequent inspection by hand, subsequent retrospect.
In view of the heightened awareness to the above problem, the invention proposes one kind quickly to determine corresponding to radiation image
The radiation monitoring scheme of object to be detected.
Radiation monitoring scheme of the invention is mainly during carrying out radiant image to object to be detected, while to quilt
Detection object carries out visual light imaging, and be then based on certain matching rule (can be carried out based on time or relative positional relationship
Matching, can also use other matching ways, and specific matching process will be described below in detail), it will correspond to same tested
It surveys the radiation image of object obtained by radiation scanning and is mapped by the optical imagery that visual light imaging obtains.This
Sample can synchronously show corresponding optical imagery when showing radiation image, and security staff is facilitated quickly to determine radiation
Object to be detected corresponding to image.
Radiation monitoring scheme of the invention can be implemented as a kind of radiation checking system, also can be implemented as a kind of radiation inspection
Checking method.
Fig. 1 shows the schematic block diagram of the structure of radiation checking system according to an embodiment of the invention.
Based on radiant image principle it is found that radiation checking system between object to be detected for having relative motion
In the case of to object to be detected carry out radiation monitoring (radiation monitoring here is primarily referred to as radiant image).Here usually there are two types of
Form the mode of relative motion: it is fixed that one is checking matters, and radiation checking system moves on the ground, by checking matter reality
Existing scanning imagery, such as vehicular transmission inspection system and vehicular back scattering check that system carries out motion scan, can will be this kind of
Scanning mode is known as mobile scanning；Another kind is that radiation checking system is fixed, and checking matter is real by radiation checking system
Existing scanning imagery, such as fast general formula vehicle inspection system or vehicular check the fixed vehicle of system by being scanned into
This kind of scanning mode can be known as fixed scanning by picture.
Referring to Fig. 1, radiation checking system 100 includes radiation imaging apparatus 110, visual light imaging device 120 and image
Matched-field processors 130.
Radiation imaging apparatus 110 is for scanning by column object to be detected, to obtain multiple column scan figures of object to be detected
Picture, wherein the direction of column is substantially perpendicular to the direction of the relative motion between radiation imaging apparatus 110 and object to be detected.
Specifically, radiation imaging apparatus 110 can use transmission-type radiant image, can also using back-scatter radiation at
Picture.
As shown in Fig. 2, radiation imaging apparatus may include radiation source 1110, collimation when using transmission-type radiant image
Device 1120 and detector 1130.
Radiation source 1110 is for generating X-ray.Collimator 1120 is collimated for ray, so that ray channel after testing
Just guarantee that detector array is completely covered later.Detector 1130 can detecte ray and reach detector behind channel after testing
The intensity of ray when position, and transmitted intensity can be converted into transmission image.
As shown in figure 3, radiation imaging apparatus may include radiation source 1110, ray when using back-scatter radiation imaging
Modulating device 1121 and detector 1130.Wherein, for generating X-ray, ray modulation device 1121 is used for radiation source 1110
The X-ray generated to radiation source 1110 is modulated, to form the flying spot of spot scan.Not with use transmission-type radiant image
Together, detector 1130 is located at the two sides of ray modulation device 1121, for receiving the intensity of the ray from detected material volume scattering,
And transmitted intensity is converted into dispersion image.
Visual light imaging device 120 has fixed relative position with radiation imaging apparatus 110 during radiation monitoring
Relationship, for optical imagery being carried out to object to be detected, to obtain one or more of object to be detected during radiation monitoring
A optical imagery.Wherein, optical imagery here can be photo one by one, be also possible to the view comprising multiple optical imagerys
Frequently.
For example, visual light imaging device 120 can be camera or photographic device, it specifically can be area array cameras and be also possible to
Line-scan digital camera is acquired object to be detected by corresponding face battle array or linear array acquisition mode, to obtain the field of object to be detected
Scape image or video.For example, can carry out optical imagery when using line-scan digital camera to object to be detected column by column, in this way may be used
To obtain multiple row optical imagery；When carrying out optical imagery to object to be detected using area array cameras, the imaging model of area array cameras
It encloses larger, in object to be detected negligible amounts or object to be detected small volume, is likely to be obtained a width or a few width optical imagerys；
Furthermore it is also possible to obtain the video information of object to be detected using photographic device, available at this time includes multiple optical imagerys
Video.
Images match processor 130 can will correspond to the column scan of same object to be detected based on scheduled matching rule
Image and optical imagery are matched, and corresponding relationship between the two is obtained, for matched column scan image and optical imagery,
Security staff can be facilitated quickly to position object to be detected with simultaneous display.
Here, images match processor 130 can take a variety of matching rules to be matched, as an example, being set forth below
Match based on the time and matched two kinds of matching ways are carried out based on relative positional relationship.It should be understood that this field skill
Art personnel can also take a variety of other matching ways will be corresponding to the column scan image and optical picture of same object to be detected
As being mapped, which is not described herein again.
It is matched based on the time
When images match processor 130 can be according to the shooting of the scanning imaging time of column scan image and optical imagery
Between, establish the corresponding relationship between column scan image and optical imagery.
As described above, during radiation imaging apparatus 110 carries out radiant image to object to be detected, it is seen that light imaging
Device 120 can carry out visual light imaging to object to be detected simultaneously.Wherein the imaging frequency of visual light imaging device 120 can be with
It is identical as the imaging frequency of column scan image of radiation imaging apparatus 110, it can also be different.According to being scanned into for column scan image
As the shooting time of time and optical imagery, the corresponding relationship between column scan image and optical imagery can establish.
For example, visual light imaging device 120 can carry out optics to object to be detected by the way of linear array scanning imaging
Imaging, and the imaging frequency of the column scan image of the imaging frequency of visual light imaging device 120 and radiation imaging apparatus 110 can
With identical, it is preferable that visual light imaging device 120 can be set in the position of the transmitting flying spot beam of radiation imaging apparatus 110
Set place, and synchronous imaging.In this way, can be by the multiple column scan images obtained based on radiation imaging apparatus 110 and based on can
Multiple optical imagerys that light-exposed imaging device 120 obtains directly are mapped sequentially in time.
It is matched based on relative positional relationship
Images match processor 130 can also according to radiation imaging apparatus 110 formed column scan image when and detected material
Relative positional relationship (for the ease of distinguishing, being properly termed as the first relative positional relationship here) and visual light imaging dress between body
Relative positional relationship (referred to herein as the second relative positional relationship) when setting to form optical imagery between object to be detected is established
Corresponding relationship between column scan image and optical imagery.
Radiation detection system of the invention can also include positioning device as a result, and the can be obtained by positioning device
One relative positional relationship and the second relative positional relationship, to realize the matching of column scan image and optical imagery.
As shown in Figure 1, radiation checking system 100 may include positioning device 140.Positioning device 140 can radiation at
As device 110 to object to be detected carry out radiation imaging procedure in, with scheduled frequency acquisition (can be a fixed frequency,
It is also possible to the frequency of a variation) relative displacement data of the acquisition radiation imaging apparatus 110 relative to object to be detected.Its
In, the relative position when positioning device 140 acquires relative displacement data, between positioning device 140 and radiation imaging apparatus 110
Relationship is fixed.
As described above, object to be detected is carried out in radiation imaging procedure in radiation imaging apparatus 110, it is seen that light imaging
Relative positional relationship between device 120 and radiation imaging apparatus 110 is also fixed.Therefore, the spoke obtained according to positioning device 140
Penetrate relative displacement data of the imaging device 110 relative to object to be detected, so that it may obtain visual light imaging device 120 relative to
The relative displacement data of object to be detected.Here, the scanning of radiation imaging apparatus 110 is set in visual light imaging device 120
When the Exit positions of beam, relative displacement of the radiation imaging apparatus 110 that positioning device 140 obtains relative to object to be detected
Data can relative displacement data directly as visual light imaging device 120 relative to object to be detected.In visual light imaging
When device 120 is positioned away from the Exit positions certain distance of the flying spot beam of radiation imaging apparatus 110, can according to this away from
It is corresponding inclined relative to the relative displacement data progress of object to be detected from the radiation imaging apparatus 110 obtained to positioning device 140
It moves, to obtain relative displacement data of the visual light imaging device 120 relative to object to be detected.Preferably, radiant image fills
It sets 110, visual light imaging device 120 and positioning device 140 works asynchronously, synchronizing here is same at the time of referring to start-up operation
It walks, the frequency in work can not be identical.
Wherein, positioning device 140 can directly acquire positioning device 140 relative to detected material with scheduled sample frequency
The relative displacement data of body.The method directly acquired is more convenient for mobile scan pattern, for example, radiation imaging apparatus
110 can integrate on moveable platform, and radiation imaging apparatus 110 can be moved integrally with moveable platform.Positioning device
140 can use encoder, and encoder can be set at the mobile mechanism of moveable platform.
Using moveable platform as vehicle, for encoder is arranged at the axletree of vehicle, encoder can be on ground
Some position be coordinate origin, such as can be that coordinate is former using the Exit positions of the flying spot book of radiation imaging apparatus 110
Point.In this way, encoder starts counting when the movement of radiation imaging apparatus 110 is scanned, corresponding is the angle of wheel rotation
The mobile distance of degree, i.e. correspondence proving equipment relative coordinate origin.The every mobile preset distance of vehicle (can be with the vehicle of vehicle as a result,
As soon as wheel rotation circle), encoder is once counted.
As shown in Figure 4 A, top is that radiation imaging apparatus 110 scans the collected radiation image schematic diagram of a lorry, under
Side is the collected encoded radio numerical value of encoder.Since speed may be uneven when radiation imaging apparatus 110 is mobile, as shown in the figure
The case where movement speed leads to over-sampling slowly partially when scanning truck cab, and corresponding encoded radio will appear repetition, primary radiation
Image can also widen deformation；And movement speed is fast when scanning railway carriage front leads to lack sampling, corresponding encoded radio will appear jump
The case where jump, primary radiation image can also narrow deformation, can carry out image by the method for reconstructing being introduced below in this case
It rebuilds.
As shown in Figure 4 B, top is that the optical imagery that visual light imaging device 120 obtains lorry progress optical imagery shows
It is intended to, lower section is equally the encoded radio number that encoder collects.Wherein, in the present embodiment, it is seen that photoimaging equipment 120
Installation site and radiation imaging apparatus 110 flying spot beam Exit positions have certain deviation distance, therefore, Fig. 4 A
Encoded radio corresponding to radiation image and optical imagery with the same area for corresponding to object to be detected in Fig. 4 B has certain
Deviation.
In addition, positioning device 140 can also acquire positioning device 140 relative to object to be detected with scheduled sample frequency
Relative velocity then (can be obtained according to sample frequency according to the sampling interval with obtaining one or more relative velocity datas
Out) and relative velocity data, relative displacement data of the positioning device 140 relative to object to be detected can be determined.
That is, can obtain moving in sampling interval duration by speed multiplied by the sampling interval duration of location information
Distance, by sampling interval distance it is cumulative be relative displacement data.For example, current measurement obtains when the period of testing the speed is Δ t
Speed be vi, i=0,1,2... is the sampling sequence number that tests the speed, then calculating relative displacement data is pi=pi-1+Δt*vi。
As shown in Figure 5A, above figure seems that radiation imaging apparatus 110 scans the collected radiation image signal of a lorry
Figure, lower section are the relative displacement data obtained by the collected checking matter movement speed value of certain frequency and conversion.
Images match processor 130 can be adopted before and after the scanning imaging time of column scan image based on positioning device 140
One or more relative displacement data of collection, determine the first relative positional relationship, based on positioning device 140 optical imagery bat
The one or more relative displacement data acquired before and after the time are taken the photograph, determine the second relative positional relationship.It is being determined first as a result,
After relative positional relationship and the second relative positional relationship, so that it may by the same or similar column scan image of relative positional relationship and
Optical imagery is mapped.
The determination of first relative positional relationship
For ease of description, the imaging frequency of the column scan image of radiation imaging apparatus 110 is known as the first imaging here
Frequency.
The frequency of acquisition (directly acquisition or indirectly acquisition) relative displacement data of positioning device 140 is known as third acquisition
Frequency.
When third frequency acquisition is less than the first imaging frequency, images match processor 130 can be according to the first one-tenth picture frequency
Rate carries out interpolation calculation to multiple relative displacement data, to obtain the pass of the first relative position corresponding to each column scan image
System.
When third frequency acquisition is equal to the first imaging frequency, the first relative position corresponding to multiple column scan images is closed
System corresponds with multiple relative displacement data.
When third frequency acquisition is greater than the first imaging frequency, images match processor 130 can be according to the first one-tenth picture frequency
Rate extracts multiple relative displacement data, to obtain the first relative positional relationship corresponding to each column scan image.
The determination of second relative positional relationship
When visual light imaging device 120 carries out optical imagery to object to be detected by column using line-scan digital camera, due to can
Light-exposed imaging device 120 is with radiation imaging apparatus 110 by the way of linear array scanning imaging.Therefore, the second relative positional relationship
Determination can be identical as the method for determination of the first relativeness.
For ease of description, here it will be seen that the imaging frequency of the optical imagery of photoimaging equipment 120 is known as the second imaging
Frequency.
The frequency of acquisition (directly acquisition or indirectly acquisition) relative displacement data of positioning device 140 is known as third acquisition
Frequency.
When third frequency acquisition is less than the second imaging frequency, images match processor 130 can be according to the second one-tenth picture frequency
Rate carries out interpolation calculation to multiple relative displacement data, to obtain the pass of the second relative position corresponding to each column scan image
System.
When third frequency acquisition is equal to the second imaging frequency, the second relative positional relationship corresponding to multiple optical imagerys
It is corresponded with multiple relative displacement data.
When third frequency acquisition is greater than the second imaging frequency, images match processor 130 can be according to the second one-tenth picture frequency
Rate extracts multiple relative displacement data, to obtain the second relative positional relationship corresponding to each optical imagery.
When visual light imaging device 120 is using area array cameras or photographic device, due to the figure of each collection period acquisition
It is bigger as covering object to be detected range, therefore optical image acquisition frequency can be reduced, then each frame image is subjected to splicing and is melted
It closes, forms the panoramic picture of final checking matter and scene.
When the imaging parameters of camera, such as when focal length parameter is fixed, with the scene of camera fixed range ratio in the picture
It is fixed.Therefore can in advance to object to be detected away from visual light imaging device same distance object of reference carry out at
Picture, to obtain being then based on the actual size of object of reference and the display size referring to the object of reference in image, really referring to image
Determine imaging scale.Here imaging scale refers to the ratio referring to dimension of object and actual size in image.
After imaging scale has been determined, it is only necessary to determine the camera center line of camera is relative to quilt when forming optical imagery
The position of detection object, so that it may determine position of the center relative to object to be detected of optical imagery, just according to imaging scale
Position corresponding to optical imagery each column can be extrapolated.Here object of reference can be preferred that scale.
The matching of first relative positional relationship and the second relative positional relationship
After the first relative positional relationship and the second relative positional relationship has been determined, so that it may be closed according to the first relative position
System and the second relative positional relationship to the column scan image for obtaining radiation imaging apparatus 110 and use visual light imaging device
120 optical imagerys obtained are matched.
Wherein, when the Exit positions of flying spot of radiation imaging apparatus 110 are set in visual light imaging device 120
(for example, shown in Fig. 2, Fig. 3, it is seen that going out in collimator 1120 or ray modulation device 1121 can be set in photoimaging equipment 120
Penetrate position), directly by the first relative positional relationship and the corresponding column scan image of the second relative positional relationship and optical imagery
It is determined as matching.
At the Exit positions preset distance that visual light imaging device is positioned away from the flying spot of radiation imaging apparatus
When (for example, visual light imaging device 120 shown in dotted portion in Fig. 2, Fig. 3), it is also necessary to according to from deviating from the position, to the first phase
Positional relationship and/or the second relative positional relationship are adjusted, matched based on data adjusted.
Image reconstruction
As shown in Figure 4 A, during radiation imaging apparatus 110 carries out radiant image to object to be detected, radiant image
The movement speed of device 110 may be uneven, will lead to over-sampling slowly partially in movement speed, an encoded radio can correspond to multiple column
Scan image, at this time based on multiple column scan image mosaics at radiation image compared with the real image of object to be detected, meeting
Appearance widens deformation.And when 110 movement speed of radiation imaging apparatus is too fast, it is possible to the corresponding column of several encoded radios occur
Scan image, at this time based on multiple column scan image mosaics at radiation image compared with the real image of object to be detected, meeting
Appearance narrows deformation.
Correspondingly, as shown in Figure 4 B, object to be detected is obtained using the mode that linear array acquires in visual light imaging device 120
Optical imagery when, it is also possible to the case where there are above-mentioned deformations.
Therefore, images match processor 130 can integrate multiple column scan images based on the first relative positional relationship, with
To imaging scale close to actual reconstruction scan image.Multiple optical pictures can also be integrated based on the second relative positional relationship simultaneously
Picture, to obtain imaging scale close to actual reconstruction optical imagery.
Specifically, images match processor 130 can according to the first relative positional relationship to multiple column scan images into
Row geometrical reconstruction is obtained corresponding after the reconstruction of image each column with obtaining the scan image that Aspect Ratio is consistent with actual object
Position coordinate value.
For example, can according to encoded radio carry out image reconstruction process, to the image of over-sampling carry out extract or average treatment into
Row is rebuild, and is carried out interpolation processing to the image of lack sampling and is rebuild.After being rebuild for radiation image shown in Fig. 4 A
Image is as shown in Figure 4 C, and checking matter each section will not deform in image, and corresponding position encoded value will be arithmetic progression sequence
Arrangement.Image after rebuilding for radiation image shown in Fig. 5 A is as shown in Figure 5 B.
When visual light imaging device is line-scan digital camera, the same method for reconstructing of above-mentioned radiation image can also be used to optics
Image is rebuild, such as the image after rebuilding for optical imagery shown in Fig. 4 B is as shown in Figure 4 D.
When visual light imaging device is area array cameras, can from picture group or video flowing selected part picture material it is mutual
Overlapping image carries out image mosaic processing, obtains width visible light panoramic picture identical with backscatter images length, and obtain
To the position coordinate value of panoramic picture each column.The algorithm of existing feature-based matching can be used in image mosaic, can choose
The characteristic points such as SIFT, FAST, SURF are matched.
After carrying out rebuilding and optical imagery being rebuild or spliced to radiation image, it can be sat according to the position after reconstruction
Scale value matches radiation image and optical imagery, determines corresponding image coordinate relationship.When the phase of visual light imaging device
When machine is mounted on radiation imaging apparatus ray beam position, position coordinate value between the two does not have deviation, directly by the position of the two
Set coordinate value image is corresponding；When the camera of visual light imaging device is not installed on radiation imaging apparatus ray beam position
When, there are deviations for position coordinate value between the two, and when installation site is fixed, the deviation between position coordinate value is fixed
, acquisition deviation can be compared in advance, when matching carries out the correspondence between image according to the deviation of known fixed.Completion
After matching, i.e., radiation image and optical imagery are associated.
Association display
As shown in Figure 1, as an alternative embodiment of the present invention, radiation checking system 100 can also include display
150.For determining associated radiation image and optical imagery, it is associated that display can will be synchronized by display 150
Radiation image and optical imagery show.For example, display 150 can synchronize display according to the display mode of Fig. 6.In this way, can
In order to which security staff quickly determines object to be detected corresponding to radiation image.
Furthermore it is also possible to simultaneous display radiation image and optical imagery in the form of video.For example, when visual light imaging fills
It sets collected when being vision signal, the direct opsition dependent information of radiation image after reconstruction can also be fabricated to backscatter images
Video, the broadcasting speed of object can refer to location information in visible light video and be adjusted in video, both to guarantee that video is broadcast
Put synchronization.The broadcasting speed of back scattering video and visible light video can also be adjusted respectively by specific broadcasting speed, guarantee same
Step.
As another alternative embodiment of the invention, radiation checking system can also include GPS positioning device, be used for
During radiation monitoring, the geographical location information of radiation imaging apparatus is obtained.In this way, images match processor 130 can be by GPS
Location information be tied to image each column.When mapping module, dynamic display image and video can be added in display, according to GPS
Confidence ceases the dynamic position that radiation imaging apparatus is shown in map, for example, display 150 can be according to the display mode of Fig. 7
Show the dynamic position of radiation imaging apparatus.
As another alternative embodiment of the invention, radiation checking system can also include mark identification equipment, be used for
During radiation monitoring, the identification information of object to be detected is identified.For example, mark identification equipment can be right during the scanning process
Tested vehicle carries out license plate and takes pictures and identify, license plate photo and recognition result are tied to corresponding vehicle in image.
So far, radiation checking system of the invention is described in detail in conjunction with Fig. 1-Fig. 7, in addition, the present invention also provides one
Kind radiation testing method.Radiation testing method of the invention can be adapted in radiation checking system above, below only with regard to this
The basic step that the radiation testing method of invention can have is illustrated, and the detail section addressed in step may refer to
Related narration above, which is not described herein again.
Radiation testing method of the invention may comprise steps of: scan by column detected material using radiation imaging apparatus
Body, to obtain multiple column scan images of object to be detected, the direction of column is substantially perpendicular to the direction of relative motion；It is radiating
In checking process, optical imagery is carried out to object to be detected using visual light imaging device, to obtain one of object to be detected
Or multiple optical imagerys, wherein visual light imaging device has fixed phase with radiation imaging apparatus during radiation monitoring
To positional relationship；The column scan image and the light for corresponding to same object to be detected are established based on scheduled matching rule
Learn the corresponding relationship between image.
Wherein, the column scan image and optical imagery for corresponding to same object to be detected are established based on scheduled matching rule
Between corresponding relationship the step of may include: scanning imaging time and optical imagery based at least one column scan image
Shooting time, or when forming at least one column scan image based on radiation imaging apparatus with the first phase between object to be detected
The second relative positional relationship when to positional relationship and visual light imaging device formation optical imagery between object to be detected, builds
Corresponding relationship between vertical column scan image and optical imagery.
As an alternative embodiment, radiation testing method of the invention can be the following steps are included: be based on the first phase
Multiple column scan images are integrated to positional relationship, to obtain imaging scale close to actual reconstruction scan image；And/or base
Multiple optical imagerys are integrated in the second relative positional relationship, to obtain imaging scale close to actual reconstruction optical imagery.
Wherein, radiation imaging apparatus scans by column object to be detected with the first imaging frequency, optical imagery imaging
Device carries out optical imagery to object to be detected with the second imaging frequency, and this method can also include: during radiation monitoring
Relative displacement data using positioning device with third frequency acquisition acquisition positioning device relative to object to be detected；Based on positioning
One or more relative displacement data that device acquires before and after the scanning imaging time of column scan image determine the first opposite position
Relationship is set, based on one or more relative displacement data that positioning device acquires before and after the shooting time of optical imagery, is determined
Second relative positional relationship.
When third frequency acquisition is less than the first imaging frequency, interpolation calculation can be carried out to multiple relative displacement data,
To obtain the first relative positional relationship corresponding to each column scan image.
When third frequency acquisition is equal to the first imaging frequency, the first phase corresponding to multiple column scan images can be determined
Positional relationship and multiple relative displacement data are corresponded.
When third frequency acquisition is greater than the first imaging frequency, multiple relative displacement data can be extracted, with
To the first relative positional relationship corresponding to each column scan image.
When visual light imaging device is line-scan digital camera, optical imagery can be carried out to object to be detected by column, at this time:
When third frequency acquisition is less than the second imaging frequency, interpolation calculation is carried out to relative displacement data, it is every to obtain
Second relative positional relationship corresponding to a optical imagery；
When third frequency acquisition is equal to the second imaging frequency, the first relative position corresponding to multiple optical imagerys is determined
Relationship and multiple relative displacement data correspond；
When third frequency acquisition is greater than the second imaging frequency, relative displacement data are extracted, to obtain each light
Learn the second relative positional relationship corresponding to image.
In addition, visual light imaging device be area array cameras or photographic device when, it is seen that photoimaging equipment in advance to quilt
Detection object is imaged away from the object of reference at visual light imaging device same distance, to obtain referring to image, at images match
Actual size of the device based on object of reference and the display size referring to the object of reference in image are managed, determines imaging scale, image
Position of the optical center line of visual light imaging device shooting when forming optical imagery relative to object to be detected is determined with processor
It sets, and determines the position of each column image in optical imagery based on the position and imaging scale.
Radiation checking system according to the present invention and method above is described in detail by reference to attached drawing.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (15)
1. a kind of radiation checking system radiates it in the case where relative motion for having between object to be detected
It checks characterized by comprising
Radiation imaging apparatus, for scanning by column object to be detected, to obtain multiple column scan images of the object to be detected,
The direction of the column is substantially perpendicular to the direction of the relative motion；
Visual light imaging device has fixed relative positional relationship with the radiation imaging apparatus during radiation monitoring,
For optical imagery being carried out to the object to be detected, to obtain the object to be detected during radiation monitoring
One or more optical imagerys；
Images match processor, the bat for scanning imaging time and the optical imagery based at least one column scan image
When taking the photograph the time, or forming at least one column scan image based on the radiation imaging apparatus between the object to be detected
When first relative positional relationship and the visual light imaging device form the optical imagery between the object to be detected
Second relative positional relationship is established between the column scan image and the optical imagery for corresponding to same object to be detected
Corresponding relationship,
Described image matched-field processors are also based on first relative positional relationship and integrate the multiple column scan image, to obtain
Imaging scale is also based on described second relatively close to actual reconstruction scan image and/or described image matched-field processors
Positional relationship integrates the multiple optical imagery, to obtain imaging scale close to actual reconstruction optical imagery.
2. radiation checking system according to claim 1, which is characterized in that further include:
Positioning device, for it is opposite to acquire the radiation imaging apparatus with third frequency acquisition during the radiation monitoring
In the relative displacement data of the object to be detected,
Wherein, the radiation imaging apparatus scans by column the object to be detected with the first imaging frequency, described visible
Photoimaging equipment carries out optical imagery to the object to be detected with the second imaging frequency,
Described image matched-field processors are acquired before and after the scanning imaging time of the column scan image based on the positioning device
One or more relative displacement data, determine first relative positional relationship, based on the positioning device in the optics
The one or more relative displacement data acquired before and after the shooting time of image, determine second relative positional relationship.
3. radiation checking system according to claim 2, which is characterized in that
When the third frequency acquisition is less than first imaging frequency, described image matched-field processors are to the multiple opposite
Displacement data carries out interpolation calculation, to obtain the first relative positional relationship corresponding to each column scan image, and/or
Person
When the third frequency acquisition is equal to first imaging frequency, described image matched-field processors determine the multiple column
First relative positional relationship corresponding to scan image and the multiple relative displacement data correspond, and/or
When the third frequency acquisition is greater than first imaging frequency, described image matched-field processors are to the multiple opposite
Displacement data is extracted, to obtain the first relative positional relationship corresponding to each column scan image.
4. radiation checking system according to claim 2, which is characterized in that
The radiation imaging apparatus is arranged on moveable platform, and the radiation imaging apparatus can be with the moveable platform
It moves integrally,
The positioning device includes encoder, and the encoder is arranged at the mobile mechanism of the moveable platform.
5. radiation checking system according to claim 4, which is characterized in that
Start to scan by column the object to be detected in response to the radiation imaging apparatus, the encoder starts counting, wherein
The every mobile preset distance of moveable platform, the encoder are once counted.
6. radiation checking system according to claim 2, which is characterized in that
The positioning device acquires the positioning device relative to the opposite of the object to be detected with the third frequency acquisition
Speed, to obtain one or more relative velocity datas, according to the third frequency acquisition and the relative velocity data, really
Fixed one or more relative displacement data.
7. radiation checking system according to claim 2, which is characterized in that
The visual light imaging device is line-scan digital camera, for carrying out optical imagery to the object to be detected by column,
When the third frequency acquisition is less than second imaging frequency, described image matched-field processors are to the relative displacement
Data carry out interpolation calculation, to obtain the second relative positional relationship corresponding to each optical imagery, and/or
When the third frequency acquisition is equal to second imaging frequency, described image matched-field processors determine the multiple light
It learns the first relative positional relationship corresponding to image and the multiple relative displacement data corresponds,
When the third frequency acquisition is greater than second imaging frequency, described image matched-field processors are to the relative displacement
Data are extracted, to obtain the second relative positional relationship corresponding to each optical imagery.
8. radiation checking system according to claim 2, which is characterized in that
The visual light imaging device be area array cameras or photographic device,
The visual light imaging device in advance to the object to be detected away from the visual light imaging device same distance at
Object of reference is imaged, to obtain referring to image,
Actual size and the object of reference referring in image of the described image matched-field processors based on the object of reference are shown
Show size, determine imaging scale,
Described image matched-field processors determine the optical center for forming the visual light imaging device shooting when optical imagery
Position of the line relative to the object to be detected, and each column in the optical imagery is determined based on the position and the imaging scale
Second relative positional relationship corresponding to image.
9. radiation checking system according to claim 2, which is characterized in that
The Exit positions of the flying spot of the radiation imaging apparatus are arranged in the visual light imaging device, or
The visual light imaging device is positioned away from the Exit positions preset distance of the flying spot of the radiation imaging apparatus
Place.
10. radiation checking system according to claim 1, which is characterized in that further include:
GPS positioning device, for obtaining the geographical location information of the radiation imaging apparatus during radiation monitoring；
And/or
Mark identification equipment, for identifying the identification information of the object to be detected during radiation monitoring.
11. a kind of radiation testing method carries out spoke to it in the case where relative motion for having between object to be detected
Penetrate inspection characterized by comprising
Object to be detected is scanned by column using radiation imaging apparatus, to obtain multiple column scan images of the object to be detected,
The direction of the column is substantially perpendicular to the direction of the relative motion；
During radiation monitoring, optical imagery is carried out to the object to be detected using visual light imaging device, to obtain
State one or more optical imagerys of object to be detected, wherein the visual light imaging device and institute during radiation monitoring
Stating radiation imaging apparatus has fixed relative positional relationship；
The shooting time of scanning imaging time and the optical imagery based at least one column scan image, or based on described
The first relative positional relationship when radiation imaging apparatus forms at least one column scan image between the object to be detected and
The second relative positional relationship when the visual light imaging device forms the optical imagery between the object to be detected, builds
Found the corresponding relationship between the column scan image and the optical imagery；
The multiple column scan image is integrated based on first relative positional relationship, to obtain imaging scale close to actual heavy
Build scan image；And/or
The multiple optical imagery is integrated based on second relative positional relationship, to obtain imaging scale close to actual reconstruction
Optical imagery.
12. radiation testing method according to claim 11, wherein the radiation imaging apparatus is with the first imaging frequency pair
The object to be detected is scanned by column, the visual light imaging device with the second imaging frequency to the object to be detected into
Row optical imagery, this method further include:
The positioning device is acquired relative to described tested with third frequency acquisition using positioning device during radiation monitoring
Survey the relative displacement data of object；
The opposite position of one or more acquired before and after the scanning imaging time of the column scan image based on the positioning device
Data are moved, first relative positional relationship are determined, based on the positioning device before and after the shooting time of the optical imagery
One or more relative displacement data of acquisition, determine second relative positional relationship.
13. radiation testing method according to claim 12, which is characterized in that
When the third frequency acquisition is less than first imaging frequency, interpolation meter is carried out to the multiple relative displacement data
It calculates, to obtain the first relative positional relationship corresponding to each column scan image, and/or
When the third frequency acquisition is equal to first imaging frequency, the is determined corresponding to the multiple column scan image
One relative positional relationship and the multiple relative displacement data correspond, and/or
When the third frequency acquisition is greater than first imaging frequency, the multiple relative displacement data are extracted,
To obtain the first relative positional relationship corresponding to each column scan image.
14. radiation testing method according to claim 12, which is characterized in that
The visual light imaging device is line-scan digital camera, for carrying out optical imagery to the object to be detected by column,
When the third frequency acquisition is less than second imaging frequency, interpolation calculation is carried out to the relative displacement data,
To obtain the second relative positional relationship corresponding to each optical imagery, and/or
When the third frequency acquisition is equal to second imaging frequency, determine first corresponding to the multiple optical imagery
Relative positional relationship and the multiple relative displacement data correspond,
When the third frequency acquisition is greater than second imaging frequency, the relative displacement data are extracted, with
To the second relative positional relationship corresponding to each optical imagery.
15. radiation testing method according to claim 12, which is characterized in that the visual light imaging device is face battle array phase
Machine or photographic device, this method further include:
It is imaged in advance to the object to be detected away from the object of reference at the visual light imaging device same distance, with
To referring to image；
Actual size and the display size referring to the object of reference in image based on the object of reference, determine imaging ratio
Example；
Determine that the optical center line for forming the visual light imaging device shooting when optical imagery is detected relative to described
The position of object, and the second phase corresponding to each column image in the optical imagery is determined based on the position and the imaging scale
To positional relationship.
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| SA519401590A SA519401590B1 (en) | 2016-10-17 | 2019-04-16 | Radiation Inspection System and Method |
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2019
- 2019-04-16 SA SA519401590A patent/SA519401590B1/en unknown
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| WO2018072669A1 (en) | 2018-04-26 |
| CN106383132A (en) | 2017-02-08 |
| SA519401590B1 (en) | 2022-06-01 |
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