CN103995273B - A kind of panoramic imaging device and probe - Google Patents
A kind of panoramic imaging device and probe Download PDFInfo
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- CN103995273B CN103995273B CN201410193308.2A CN201410193308A CN103995273B CN 103995273 B CN103995273 B CN 103995273B CN 201410193308 A CN201410193308 A CN 201410193308A CN 103995273 B CN103995273 B CN 103995273B
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Abstract
The invention discloses a kind of probe, including multiple detectors, camera lens and coding collimator, described detector, camera lens are identical with the quantity of coding collimator, the plurality of detector ring is uniform, the quantity of described detector be N, N be the even number more than 2, the visual field of each described detector is X radian, and the long-pending of N Yu X is equal to 2 π, arrange correspondingly between the plurality of camera lens and multiple coding collimator and the plurality of detector.The invention also discloses a kind of panoramic imaging device, including electronic system, also include popping one's head in as above, be electrically connected with between described probe and described electronic system and can be in communication with each other.The present invention uses the detector that multiple annular is uniform, and the quantity of detector is long-pending equal to 2 π with the visual field of each detector, thus disposably realizes panoramic scanning operation by the plurality of detector, convenient and swift.
Description
Technical field
The present invention relates to the imaging technique in radiation safety field, be specifically related to realize the structure of panoramic imagery.
Background technology
Code aperture (Coded Aperture, CA) imaging has detection relative to traditional pinhole imaging system
The outstanding advantages such as efficiency is high, imaging time is short, additionally, in coded imaging technology, it is important that noise reduction
Mode is to reduce the noise of background and system by the way of positive and negative coding subtracts each other, based on above advantage,
CA imaging becomes radiological imaging techniques developing direction.At present, code aperture radiological imaging on market
Instrument is single detector, has certain taper visual field, can position a range of radiographic source
And imaging.For the perforate mode of code aperture, common are RA (Random Arrays, stochastic matrix
Row) and MURA (Modified Uniformly Redundant Arrays, revise uniform redundant array)
Deng.Such as GammaCam (a gamma imager of AIL System company of U.S. exploitation) and RadCam
(a gamma imager of RMD company of U.S. exploitation) all have employed MURA coded imaging, for list
Probe imager, coded number be 19 can by collimator half-twist realize positive Gray code switching (expire
Foot coded number is prime number and coding pattern has rotation anti symmetry time coded number is 4N-1), but due to
, there is the interference to full filed internal source of half field-of-view's internal source in the periodicity of MURA coding collimator
Problem.For RA, owing to coding pattern does not possess periodically, there is not half field-of-view's interference problem, but
The most do not possess rotation anti symmetry simultaneously, single probe system is difficult to the noise reduction of positive and negative coding.
In this external operation that circumstances not known carries out radiation focus investigation, use single probe imager need to pass through hands
Dynamic rotate probe towards, multi collect, realize the panoramic scanning to surrounding enviroment.Use existing
The time that imager realizes panoramic scanning is long, and efficiency is the lowest, and troublesome poeration, do not meet existing
Generationization requirement fast and easily.
Summary of the invention
For problems of the prior art, the purpose of the present invention is carried out conveniently and efficiently for providing one
The probe of panoramic scanning and panoramic imaging device.
For achieving the above object, technical scheme is as follows:
A kind of probe, including multiple detectors, camera lens and coding collimator, described detector, camera lens and
The quantity of coding collimator is identical, and the plurality of detector ring is uniform, and the quantity of described detector is N,
Described N is the even number more than 2, and the visual field of each described detector is X radian, and N's Yu X is long-pending
Equal to 2 π, one_to_one corresponding between the plurality of camera lens and multiple coding collimator and the plurality of detector
Ground is arranged.
Further, also include that base and shell, the plurality of detector are laid on described base, described
Shell be located on described base, and has N number of installed surface, and described camera lens and described coding collimator divide
It is not arranged on correspondingly on N number of installed surface of described shell with described detector.
Further, described shell can once rotate Y arc together with described coding collimator relative to described base
Spend, and described Y is 2 π with amassing of described N, any two adjacent volumes in the plurality of coding collimator
The code the most positive and negative coding of collimator.
Further, coded number during described coding collimator employing random array is arbitrary integer, described volume
When code collimator uses MURA, coded number is prime number.
Further, also include that the first shielding block and secondary shielding block, described first shielding block are arranged
Between the described detector of any biphase neighbour, described secondary shielding block is arranged on the plurality of detector
On the center of the annular formed.
Further, described first shielding block and described secondary shielding block are heavy metal shield material.
Further, described first shielding block is the baffle plate being vertically arranged, and described secondary shielding block is one
Circular column, described first shielding block and described secondary shielding block jointly act on and will detect described in any two
Separation is mutually shielded between device.
Further, between described any two adjacent coding collimator and full filed edges of detector mutually
Parallel.
Further, also including turntable, described turntable connects the described probe of driving and rotates.
For achieving the above object, the present invention also provides for following technical scheme:
A kind of panoramic imaging device, including electronic system, also includes popping one's head in as above, described spy
It is electrically connected with between head and described electronic system and can be in communication with each other.
Further, described electronic system is fixedly installed in a bearing, and described probe is arranged on described
On seat.
Further, also including turntable, described turntable connects the described probe of driving and rotates.
Compared with prior art, the present invention uses the detector that multiple annular is uniform to the present invention, detector
Quantity is long-pending equal to 2 π with the visual field of each detector, thus is disposably realized by the plurality of detector
Panoramic scanning operation, convenient and swift.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the present invention is described in further detail:
Fig. 1 is the structural representation of the panoramic imaging device of the present invention；
Fig. 2 is the sonde configuration schematic diagram of the present invention；
Fig. 3 is the probe visual field structural representation of the present invention；
Fig. 4 is the probe of the present invention scanning schematic diagram to radioactive source；
Fig. 5 is the structural representation of the electronic system in the panoramic imaging device of the present invention.
Detailed description of the invention
Embodiment feature of present invention will describe the most in detail with the exemplary embodiments of advantage.Ying Li
Solve is that the present invention can have various changes in different embodiments, and it is all without departing from the present invention's
Scope, and explanation therein and accompanying drawing be inherently illustrated as being used, and be not used to limit the present invention.
As it is shown in figure 1, the panoramic imaging device in the present embodiment includes pop one's head in 1, turntable 2 and electronics
System 3, probe 1 is for being scanned radioactive source, and turntable 2 connects probe 1 and rotates probe 1, electricity
The data of probe 1 collection are analyzed processing by the communication of sub-system 3 and electric connection probe 1.This
The turntable 2 of invention is the most indispensable, it is possible to probe 3 is fabricated to fixed form or manually rotates.
As in figure 2 it is shown, and with reference to Fig. 3 and Fig. 4, the probe 1 of the present invention include base 10, shell 11,
Multiple camera lenses 12, multiple coding collimator 13, multiple detector 14, first shield block 15 and second
Shielding block 16.Base 10 is used for carrying detector 14, and shell 11 fastens base 10, and thereon
Loading camera lens 12 and coding collimator 13, camera lens 12 is ordinary optical camera lens, is used for commonly shooting with video-corder
Picture, radioactive source 4 is detected by coding collimator 13 for tie detector 14, the first shielding block
15 and secondary shielding block 16 for shielding between each detector 14.
In the present invention, detector 14 is position sensitive gamma-ray detector, multiple detectors 14 annular
Uniform, the quantity of detector 14 is N, and the visual field of each detector 14 is X radian, and N and X
Long-pending equal to 2 π, so that the probe 1 of the present invention realizes panoramic imagery function.Shell 11 has N number of peace
Dress face, camera lens 12, coding collimator 13 identical with the quantity of detector 14, and respectively with detector 14
It is arranged on correspondingly on N number of installed surface of shell 11.In the present embodiment, N is 6, and X is π/3,
Do not count as limiting with this during actual set.
MURA coding is to use most coded systems at present, and according to its coding rule, coded number should be
Prime number.When coded number is 4N-1, its coding pattern has rotation anti symmetry, i.e. by half-twist,
Coding one element of the pattern a good appetite suddenly appearing in a serious disease heart other element contrast outer, but when coded number is 4N+1 the most not
There is this rotation and oppose old property.In coded imaging, the use of positive and negative coding pattern can significantly reduce this
Back noise, therefore it is 4N-1 (19,23 that the products such as GammaCam, RadCam all have employed coded number
Deng) MURA coded system.
In the present invention, N is the even number more than 2, and shell 11 can once rotate Y arc by respect thereto 10
Spend, and the long-pending of Y Yu N is equal to 2 π, any two adjacent codings collimations in multiple coding collimators 13
The most positive and negative coding of device 13.In the present embodiment, N is 6, and Y is π/3, during actual set not with
This number is for limiting.This kind of mode only needs 1 set rotating mechanism (for turntable 2 in the present embodiment) to get final product simultaneously
Realize the positive and negative coding switching of 6 detectors 14, and without 6 set rotating mechanisms respectively to 6 codings
Collimator 13 carries out positive and negative switching.Additionally, this positive and negative coding switching mode makes as used MURA
Coding, then coded number meets prime number, is not limited by 4N-1；As used RA to encode, then encode
Number is integer.
In the present invention, as it is shown on figure 3, any two adjacent coding collimators 13 and detector 14 is complete
It is parallel to each other between field of view edge.Full filed and half field-of-view define according to geometrical relationship described in Fig. 4,
Complete code period is projected in detector 14 plane by the radial energy that the radioactive source 4 in full filed is released
On, coding pattern is partly projected on detector plane by the radioactive source 4 in half field-of-view, ordinary circumstance
Under, coding collimator 13 area is more than detector, and the most complete code period is consistent with detector size,
For MURA, complete code period is N × N, and detector 14 area is N × N, coding collimation
Device 13 is typically designed to (2N-1) × (2N-1).Specifically, any two adjacent coding collimators 13 and spy
Survey in device 14, the company of the margo dexter of the margo dexter of the coding collimator 13 in left side and the detector 14 in left side
Line or joint face are First Line face 101, the left border of the coding collimator 13 on right side and the detector on right side
The line of the left border of 14 or joint face are the second line face 101, First Line face 101 and the second line face 102
Between be parallel to each other.
As used MURA to encode, then CAI instrument of singly popping one's head in carries out the existence of radioactive source location and partly regards
Source positions erroneous judgement problem in the case of Chang.In the probe 1 of the present invention, each detector 14 all has 2
Individual adjacent detector 14, can be in conjunction with adjacent detector 14 imaging results comprehensive descision radioactive source 4
Actual position, as shown in Figure 4, this radioactive source 4 is positioned at two regions being crossed as picture, can sentence according to imaging
This radioactive source 4 disconnected is positioned at the half field-of-view of left side detector 14, and is in the full filed of right side detector 14,
The position of this radioactive source 4 can be properly positioned by image co-registration.
Shielding construction includes that the first shielding block 15 and secondary shielding block 16, the first shielding block 15 set
Putting between the detector 14 of any biphase neighbour, secondary shielding block 16 is arranged on multiple detector 14
On the center of the annular formed.And, the first shielding block 15 and secondary shielding block 16 are
Heavy metal shield material.Wherein, the first shielding block 15 is the baffle plate being vertically arranged, secondary shielding block
16 is a circular column, and the first shielding block 15 and secondary shielding block 16 act on jointly by any two detections
Separation is mutually shielded between device 14.
The structure of the turntable 2 in the present embodiment is not particularly limited, and can be worm gear structure, it is possible to
To be gear transmission structure, as long as be capable of popping one's head in 1 rotation.
In the present embodiment, as it is shown in figure 5, electronic system 3 is fixedly installed in a bearing 30, turntable
2 are arranged on bearing 30, and probe 1 is arranged on bearing 30 by this turntable 2.Electronic system 3
Including data acquisition module 31, optical image acquisition module 32, turning table control module 33, data summarization
Transport module 34, low-tension supply module 35 and high-voltage power module 36.In the present embodiment, data acquisition
Module 31 realizes analog signal digital collection and the number of gamma ray detection information of 6 detectors 14
Wordization obtains.Optical image acquisition module 32 realizes the digital acquisition of 6 camera lenses 12.Turning table control
Module 33 realizes the electric machine rotation to turntable 2 and controls.Data summarization transport module 34 receives data acquisition
Module 31, optical image acquisition module 32 and the data of turning table control module 33, with gigabit networking agreement
Transfer data to backend computer, and realize the backend computer control to system.Low-tension supply module
35 provide system work required low-tension supply.It is required that high-voltage power module 36 provides detector 14 to work
High voltage power supply.
Compared with prior art, the present invention uses the detector 14 that multiple annular is uniform, detector to the present invention
The quantity of 14 is long-pending equal to 2 π with the visual field of each detector 14, thus by the plurality of detector 14
Disposably realize panoramic scanning operation, convenient and swift；Framework of the present invention can pass through a set of rotating machine
Structure the most efficiently achieves the positive and negative coding switching of N number of probe unit；Sonde configuration of the present invention can
By the result of detection Comprehensive Correlation of adjacent detector, it is to avoid the interference of half field-of-view's internal source 4；This
Two adjacent coding collimators 13 only need to be designed to the most positive and negative by bright described sonde configuration,
Code pattern sample body need not be pursued there is rotation anti symmetry, can the most freely select coded system and volume
Yardage.
Technical scheme is disclosed as above by preferred embodiment.Those skilled in the art it should be appreciated that
To institute in the case of without departing from the scope and spirit of the present invention disclosed in appended claims of the invention
The change made and retouching, within all belonging to the scope of the claims of the present invention.
Claims (10)
1. a probe, it is characterised in that include multiple detector, camera lens and coding collimator and the end
Seat and shell, described detector, camera lens are identical with the quantity of coding collimator, the plurality of detector rings
Shape is uniform, and the quantity of described detector is N, and described N is the even number more than 2, each described detector
Visual field be X radian, and N's Yu X is long-pending equal to 2 π, the plurality of camera lens and multiple coding collimator
And arranging correspondingly between the plurality of detector, the plurality of detector is laid on described base,
Described shell be located on described base, and has N number of installed surface, described camera lens and described coding collimation
Device is arranged on N number of installed surface of described shell correspondingly with described detector respectively, described shell
Y radian, and described Y and described N can be once rotated relative to described base together with described coding collimator
To amass be 2 π, any two adjacent the most positive and negative volumes of coding collimator in the plurality of coding collimator
Code.
Pop one's head in the most as claimed in claim 1, it is characterised in that described coding collimator uses stochastic matrix
Coded number during row is arbitrary integer, and when described coding collimator uses MURA, coded number is prime number.
Pop one's head in the most as claimed in claim 1, it is characterised in that also include the first shielding block and second
Shielding block, described first shielding block is arranged between any two adjacent described detectors, and described the
Two shielding blocks are arranged on the center of the annular that the plurality of detector is formed.
Pop one's head in the most as claimed in claim 3, it is characterised in that described first shielding block and described the
Two shielding blocks are heavy metal shield material.
Pop one's head in the most as claimed in claim 4, it is characterised in that described first shielding block is for vertically to set
The baffle plate put, described secondary shielding block is a circular column, described first shielding block and described second screen
Cover block jointly to act on and mutually shield separation between detector described in any two.
Pop one's head in the most as claimed in claim 1, it is characterised in that described any two adjacent coding collimations
It is parallel to each other between the full filed edge of device and detector.
Popping one's head in the most as claimed in claim 1, it is characterised in that also include turntable, described turntable connects
Described probe is driven to rotate.
8. a panoramic imaging device, including electronic system, it is characterised in that also include that right such as is wanted
Seek the arbitrary described probe of 1-6, be electrically connected with between described probe and described electronic system and can be mutual
Communication.
9. panoramic imaging device as claimed in claim 8, it is characterised in that described electronic system is solid
Surely being arranged in a bearing, described probe is arranged on described bearing.
10. panoramic imaging device as claimed in claim 8 or 9, it is characterised in that also include turntable,
Described turntable connects the described probe of driving and rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193308.2A CN103995273B (en) | 2014-05-08 | 2014-05-08 | A kind of panoramic imaging device and probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193308.2A CN103995273B (en) | 2014-05-08 | 2014-05-08 | A kind of panoramic imaging device and probe |
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| CN103995273A CN103995273A (en) | 2014-08-20 |
| CN103995273B true CN103995273B (en) | 2016-08-24 |
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| CN201410193308.2A Active CN103995273B (en) | 2014-05-08 | 2014-05-08 | A kind of panoramic imaging device and probe |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155675A (en) * | 2014-08-27 | 2014-11-19 | 中国科学院高能物理研究所 | Radiation source positioning and imaging device |
| JP6738644B2 (en) * | 2016-04-15 | 2020-08-12 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Imaging device and imaging method |
| CN113109857B (en) * | 2021-03-24 | 2024-04-19 | 北京大学 | Medium-energy electronic detection probe and medium-energy electronic detector |
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| CN1802847A (en) * | 2003-05-13 | 2006-07-12 | 艾科悉德成像有限公司 | Optical method and system for enhancing image resolution |
| CN101228460A (en) * | 2005-05-23 | 2008-07-23 | 秦内蒂克有限公司 | Coded aperture imaging system |
| CN201514540U (en) * | 2009-05-15 | 2010-06-23 | 河南泰生瑞达信息科技有限公司 | Multi-lens integrated 360-degree circular shooting digital camera |
| CN201754214U (en) * | 2010-07-20 | 2011-03-02 | 北京四维图新科技股份有限公司 | Panorama shooting device |
| CN102890974A (en) * | 2012-10-16 | 2013-01-23 | 中国科学院高能物理研究所 | Coded aperture imaging system and coding code plate thereof |
| CN203133468U (en) * | 2013-03-21 | 2013-08-14 | 武汉大学 | Panoramic image acquisition device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6737652B2 (en) * | 2000-09-29 | 2004-05-18 | Massachusetts Institute Of Technology | Coded aperture imaging |
| JP2004061808A (en) * | 2002-07-29 | 2004-02-26 | K-S Creative Studio:Kk | Panoramic photographing device |
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2014
- 2014-05-08 CN CN201410193308.2A patent/CN103995273B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802847A (en) * | 2003-05-13 | 2006-07-12 | 艾科悉德成像有限公司 | Optical method and system for enhancing image resolution |
| CN101228460A (en) * | 2005-05-23 | 2008-07-23 | 秦内蒂克有限公司 | Coded aperture imaging system |
| CN201514540U (en) * | 2009-05-15 | 2010-06-23 | 河南泰生瑞达信息科技有限公司 | Multi-lens integrated 360-degree circular shooting digital camera |
| CN201754214U (en) * | 2010-07-20 | 2011-03-02 | 北京四维图新科技股份有限公司 | Panorama shooting device |
| CN102890974A (en) * | 2012-10-16 | 2013-01-23 | 中国科学院高能物理研究所 | Coded aperture imaging system and coding code plate thereof |
| CN203133468U (en) * | 2013-03-21 | 2013-08-14 | 武汉大学 | Panoramic image acquisition device |
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| CN103995273A (en) | 2014-08-20 |
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Effective date of registration: 20180906 Address after: 100043 302, 3 floor, 1 building, 18 Shixing East Street, Shijingshan District, Beijing. Patentee after: BEIJING HIGH ENERGY NEW TECHNOLOGY CO., LTD. Address before: 100049 Beijing Shijingshan District 19 Yuquanlu Road No. 2 hospital Patentee before: High Energy Physics Inst., Chinese Academy of Sciences |
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