CN106017867A - Method for detecting field angle of hard tube endoscope - Google Patents
Method for detecting field angle of hard tube endoscope Download PDFInfo
- Publication number
- CN106017867A CN106017867A CN201510130028.1A CN201510130028A CN106017867A CN 106017867 A CN106017867 A CN 106017867A CN 201510130028 A CN201510130028 A CN 201510130028A CN 106017867 A CN106017867 A CN 106017867A
- Authority
- CN
- China
- Prior art keywords
- endoscope
- rigid pipe
- image
- visual field
- lcds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
The invention discloses a method for detecting the field angle of a hard tube endoscope. The method employs a liquid crystal display to replace a fixed target, does not need to enable a round view field of an endoscope to be aligned with a fixed region of the target, saves an alignment link, does not need to prepare a plurality of targets, and can reduce the detection complexity. The target is displayed on the liquid crystal display. Compared with a detection mode of drawing the target through illumination of a light source, the method is more intelligent, and is more accurate in obtained detection result. In a working distance range, the method employs a linear motor to move the endoscope by a distance H, wherein H is an arbitrary value. The method is more accurate, and can improve the detection precision.
Description
Technical field
The present invention relates to rigid pipe endoscope optical parameter measurement technical field, particularly relate to a kind of detection method for the rigid pipe endoscope angle of visual field.
Background technology
As armarium, endoscopic optical characteristic affects its image quality, and remote-effects diagnosis and treatment safety, therefore, the angle of visual field is as one of optical parametric, and certainty of measurement is the highest, more can characterize endoscope's characteristic, and diagnosis and treatment safety is the highest.Master's thesis " Medical Rigid Endoscope optical property quality control detection technique research " provides the device of a kind of angle of visual field detecting Medical Rigid Endoscope, including guide rail, uniform source of light, target etc., target is located between uniform source of light and Medical Rigid Endoscope, wherein, uniform source of light and test target are inserted in mounting box, draw on target and have the interior of known radius, outer toroid, first the visual field of rigid pipe endoscope is overlapped with outer toroid, mobile endoscope distance D, Zai Shi endoscope circle visual field annulus interior with on target overlaps, the most just can determine that the angle of visual field size of endoscope.Owing to twice coincidence needs manually to be directed at, the biggest error can be brought to measurement result, thus reduce certainty of measurement, and manual-alignment process is the most cumbersome；It addition, when endoscope is taken multiple measurements, need to prepare multiple target with different pattern, the most also can increase complexity and the uncertainty measuring work.
Summary of the invention
In view of this, the invention provides a kind of detection method for the rigid pipe endoscope angle of visual field, it is possible to the angle of visual field of detection rigid pipe endoscope.
A kind of detection method for the rigid pipe endoscope angle of visual field, comprises the steps:
Step 1, build angle of visual field detecting system: LCDs, endoscope's holding frame and imaging CCD are arranged on linear electric motors guide rail；Rigid pipe endoscope will be test for be fixed on described endoscope holding frame, make the visual field alignment LCDs of rigid pipe endoscope；The optical interface that imaging CCD is carried by the emergent pupil end of rigid pipe endoscope is linked together；
Step 2, control LCDs and produce vertical bright line, and control described vertical bright line and move to opposite side from the side of LCDs with speed v；
Step 3, while LCDs starts to produce vertical bright line, control imaging CCD Δ t of per interval gather the image of rigid pipe endoscope emergent pupil end described in a frame, until LCDs on vertical bright line disappear, stop gather image；
The image that step 4, statistics imaging CCD currently gather includes the frame number n of vertical bright line image, thus obtains the visual field width D=n × Δ t × V of the observable LCDs of rigid pipe endoscope；
Step 5, control endoscope holding frame linearly motor slide rails are to direction displacement H away from LCDs；
Step 6, again execution step 2 and step 3, the image that then statistics imaging CCD currently gathers includes the frame number n ' of vertical bright line image, obtains the visual field width D '=n ' × Δ t × V of the current observable LCDs of rigid pipe endoscope；
Step 7, according to equation below obtain rigid pipe endoscope angle of visual field size θ:
Further, in described step 1, rigid pipe endoscope is rotated 90 ° along self axis of symmetry, then perform step 2 to step 7, obtain the rigid pipe endoscope angle of visual field size at vertical direction.
Preferably, in described step 4 or step 6, the image that statistics imaging CCD currently gathers includes that the frame number method of vertical bright line image is: first the image collected is carried out binary conversion treatment, the gray value of binary image jumps to the image of 255 from 0 and is the image comprising vertical bright line, add up all gray values and the image of described transition occurs, i.e. obtain comprising the frame number of vertical bright line image.
It is also preferred that the left described LCDs is full of the whole visual field of described rigid pipe endoscope.
There is advantages that
The rigid pipe endoscope angle of visual field detection method of the present invention, uses LCDs to replace fixing target, it is not necessary to endoscope's circle visual field bornb sight fixed area, omits alignment link, it is not necessary to prepare multiple target, it is possible to decrease the complexity of detection work；At liquid crystal screen display target, compared to the detection mode of the target being illuminated drafting by light source, the method for the present invention is more intelligent, and meanwhile, the testing result obtained also can be more accurate；In the range of operating distance, employing linear electric motors are by endoscope's displacement H, and H is arbitrary value, and location is more accurate, thus can improve accuracy of detection.
Accompanying drawing explanation
Fig. 1 is the detecting system structural representation of the present invention.
Wherein, 1-LCDs, 2-endoscope holding frame, 3-imaging CCD, 4-image processing module, 5-linear electric motors guide rail, 6-LCDs control module.
Detailed description of the invention
Develop simultaneously embodiment below in conjunction with the accompanying drawings, describes the present invention.
The invention provides a kind of detection method for measuring the rigid pipe endoscope angle of visual field, it is achieved the measurement to the rigid pipe endoscope angle of visual field, thus can evaluate endoscopic imaging quality and performance indications as one of optical parametric.
The detection method of the present invention is based on the detection device shown in Fig. 1, including LCDs 1, LCDs control module 6, imaging CCD3, endoscope's holding frame 2, linear electric motors guide rail 5 and its image processing module 4；LCDs 1, endoscope's holding frame 2 and imaging CCD3 are installed on linear electric motors guide rail 5；It is test for rigid pipe endoscope to be fixed on endoscope's holding frame 2, endoscope's holding frame 2 adjustable endoscope height, it is ensured that the liquid crystal display screen 1 that endoscope's visual field alignment is observed, and in visual field, liquid crystal display screen 1 is full of whole visual field, field range can not be excessive, it is impossible to exceedes liquid crystal display screen border.Endoscope's holding frame 2 ensures that endoscope's adjustment is no longer rocked after complete, it is to avoid produce error.
The visual field alignment LCDs of rigid pipe endoscope, the optical interface that imaging CCD3 is carried by the emergent pupil end of rigid pipe endoscope links together, and the liquid crystal display screen image observing the emergent pupil end of rigid pipe endoscope is acquired.LCDs control module 6 is used for controlling LCDs 1 and produces variable striped as target, and can control the scanning speed of striped.Electric linear motor controls endoscope and moves on linear electric motors guide rail 5, changes operating distance, is not required to manually regulate, and positioning precision is high, reduces error.
Image, for receiving the image that imaging CCD3 gathers, is shown and processes, obtaining the angle of visual field size of rigid pipe endoscope by image processing module 4.Imaging CCD3 gathers endoscope's emergent pupil image, is shown on the screen of image processing module, it is simple to observe, and by processing image, draws optical parametric to be measured.
LCDs 1 produces line scan, and parameters is known, such as LCDs control module 6 controls LCDs 1 and produces vertical bright line, and this vertical bright line scans the big I that (moving to opposite side from LCDs 1 side) speed is V, V on screen and is adjusted according to detection needs.Imaging CCD3 gathers endoscope's view field image, and vertical bright line occurs in visual field, causes imaging CCD3 to gather grey scale change in image.Imaging CCD3 gathers the image in this change procedure, and each two field picture controls as Δ t interval time；The image currently gathered for imaging CCD3, first the image collected is carried out binary conversion treatment, the gray value of binary image jumps to the image of 255 from 0 and is the image comprising vertical bright line, add up all gray values and the image of described transition occurs, i.e. obtain comprising the frame number n of vertical bright line image, vertically bright line occurs in the time in visual field is T=n × Δ t, then in the observable LCDs of endoscope, visual field is D=T × V.
In this device, endoscope's distance LCDs 1 operating distance is variable.Electric linear motor controls endoscope's direction displacement H away from LCDs 1, repeated measure according to the method described above, the image that statistics imaging CCD3 currently gathers includes the frame number n ' of vertical bright line image, then obtaining the observation visual field width after rigid pipe endoscope moves H is D '=n ' × Δ t × V, then the rigid pipe endoscope angle of visual field is
By rigid pipe endoscope half-twist, by above method repeated measure, obtain measuring vertical direction visual field width, finally give the angle of visual field of rigid pipe endoscope vertical direction, can be used for further the optical property of rigid pipe endoscope being evaluated.
In this device, endoscope's holding frame 2 can omit, and makes endoscope and imaging CCD3 fix and is connected, is used for installing fixed endoscope.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. the detection method for the rigid pipe endoscope angle of visual field, it is characterised in that comprise the steps:
Step 1, build angle of visual field detecting system: by LCDs (1), endoscope's holding frame (2) with
And imaging CCD (3) is arranged on linear electric motors guide rail (5)；Rigid pipe endoscope will be test for be fixed on
In described endoscope holding frame (2), make visual field alignment LCDs (1) of rigid pipe endoscope；By imaging
The optical interface that CCD (3) is carried by the emergent pupil end of rigid pipe endoscope links together；
Step 2, control LCDs (1) produce vertical bright line, and control described vertical bright line from liquid crystal
The side of display screen (1) moves to opposite side with speed v；
Step 3, while LCDs (1) starts to produce vertical bright line, control imaging CCD (3)
Per interval Δ t gathers the image of rigid pipe endoscope emergent pupil end described in a frame, until in LCDs (1)
Vertically bright line disappears, and stops gathering image；
The image that step 4, statistics imaging CCD (3) currently gather includes the frame number n of vertical bright line image,
Thus obtain the visual field width D=n × Δ t × V of the observable LCDs of rigid pipe endoscope (1)；
Step 5, control endoscope's holding frame (2) linearly motor slide rails (5) are to away from LCDs (1)
Direction displacement H；
Step 6, again execution step 2 and step 3, the figure that then statistics imaging CCD (3) currently gathers
As including the frame number n ' of vertical bright line image, obtain the current observable LCDs of rigid pipe endoscope
(3) visual field width D '=n ' × Δ t × V；
Step 7, according to equation below obtain rigid pipe endoscope angle of visual field size θ:
A kind of detection method for the medical treatment rigid pipe endoscope angle of visual field, it is special
Levy and be, in described step 1, rigid pipe endoscope is rotated 90 ° along self axis of symmetry, then performs step 2
To step 7, obtain the rigid pipe endoscope angle of visual field size at vertical direction.
A kind of detection method for the medical treatment rigid pipe endoscope angle of visual field, it is special
Levying and be, in described step 4 or step 6, the image that statistics imaging CCD (3) currently gathers includes erecting
The frame number method of straight bright line image is: first the image collected is carried out binary conversion treatment, binary image
Gray value jump to the image of 255 from 0 and be the image comprising vertical bright line, add up all gray values and occur
The image of described transition, i.e. obtains comprising the frame number of vertical bright line image.
A kind of detection method for the medical treatment rigid pipe endoscope angle of visual field, it is special
Levying and be, described LCDs (1) is full of the whole visual field of described rigid pipe endoscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130028.1A CN106017867B (en) | 2015-03-24 | 2015-03-24 | A kind of detection method for rigid pipe endoscope field angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510130028.1A CN106017867B (en) | 2015-03-24 | 2015-03-24 | A kind of detection method for rigid pipe endoscope field angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106017867A true CN106017867A (en) | 2016-10-12 |
| CN106017867B CN106017867B (en) | 2018-07-06 |
Family
ID=57082438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510130028.1A Active CN106017867B (en) | 2015-03-24 | 2015-03-24 | A kind of detection method for rigid pipe endoscope field angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106017867B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478413A (en) * | 2017-08-23 | 2017-12-15 | 信利光电股份有限公司 | A kind of angle of view test device |
| CN109106320A (en) * | 2018-08-08 | 2019-01-01 | 江苏华亘泰来生物科技有限公司 | A kind of capsule endoscope field angle detection fixture |
| CN111982468A (en) * | 2020-07-29 | 2020-11-24 | 深圳惠牛科技有限公司 | Method, device and system for measuring field angle and computer storage medium |
| CN112179629A (en) * | 2020-09-29 | 2021-01-05 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN114061918A (en) * | 2022-01-17 | 2022-02-18 | 极限人工智能有限公司 | Endoscope testing method and system |
| CN115281579A (en) * | 2022-06-17 | 2022-11-04 | 中山市微视医用科技有限公司 | Multifunctional endoscope testing system and using method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918098B (en) * | 2018-08-24 | 2020-03-31 | 天津市医疗器械质量监督检验中心 | Method for testing entrance pupil field angle of medical endoscope in rectangular field of view |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005114519A (en) * | 2003-10-07 | 2005-04-28 | Seiko Epson Corp | Inspection device for electro-optical panel, method for manufacturing electro-optical panel, method for determining visual field angle characteristics, and assembling deviation determination method |
| CN201005666Y (en) * | 2007-01-05 | 2008-01-16 | 湖北华中光电科技有限公司 | Medical rod-len endoscope detecting instrument |
| CN202801542U (en) * | 2012-08-28 | 2013-03-20 | 中国人民解放军第三0五医院 | Detecting device for quality performance of medical endoscope |
| CN103217273A (en) * | 2013-03-25 | 2013-07-24 | 上海理工大学 | Multifocal lens diopter detection system and detection method thereof |
| CN104236515A (en) * | 2014-09-11 | 2014-12-24 | 山东省计量科学研究院 | Field angle automatic measuring device for medical electronic endoscope |
| CN204115707U (en) * | 2014-09-11 | 2015-01-21 | 山东省计量科学研究院 | Medical electronic endoscope field angle self-operated measuring unit |
-
2015
- 2015-03-24 CN CN201510130028.1A patent/CN106017867B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005114519A (en) * | 2003-10-07 | 2005-04-28 | Seiko Epson Corp | Inspection device for electro-optical panel, method for manufacturing electro-optical panel, method for determining visual field angle characteristics, and assembling deviation determination method |
| CN201005666Y (en) * | 2007-01-05 | 2008-01-16 | 湖北华中光电科技有限公司 | Medical rod-len endoscope detecting instrument |
| CN202801542U (en) * | 2012-08-28 | 2013-03-20 | 中国人民解放军第三0五医院 | Detecting device for quality performance of medical endoscope |
| CN103217273A (en) * | 2013-03-25 | 2013-07-24 | 上海理工大学 | Multifocal lens diopter detection system and detection method thereof |
| CN104236515A (en) * | 2014-09-11 | 2014-12-24 | 山东省计量科学研究院 | Field angle automatic measuring device for medical electronic endoscope |
| CN204115707U (en) * | 2014-09-11 | 2015-01-21 | 山东省计量科学研究院 | Medical electronic endoscope field angle self-operated measuring unit |
Non-Patent Citations (2)
| Title |
|---|
| 杨冬 等: "医用硬性内窥镜光效性能的弦线检测方法", 《光学精密工程》 * |
| 蒋昌松 等: "医用硬性内窥镜光学性能质控检测技术研究", 《中国测试》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478413A (en) * | 2017-08-23 | 2017-12-15 | 信利光电股份有限公司 | A kind of angle of view test device |
| CN107478413B (en) * | 2017-08-23 | 2019-12-10 | 信利光电股份有限公司 | lens field angle testing device |
| CN109106320A (en) * | 2018-08-08 | 2019-01-01 | 江苏华亘泰来生物科技有限公司 | A kind of capsule endoscope field angle detection fixture |
| CN111982468A (en) * | 2020-07-29 | 2020-11-24 | 深圳惠牛科技有限公司 | Method, device and system for measuring field angle and computer storage medium |
| CN111982468B (en) * | 2020-07-29 | 2022-12-09 | 深圳惠牛科技有限公司 | Method, device and system for measuring field angle and computer storage medium |
| CN112179629A (en) * | 2020-09-29 | 2021-01-05 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN112179629B (en) * | 2020-09-29 | 2021-07-09 | 北京理工大学 | Method for measuring virtual scene field angle of virtual display equipment |
| CN114061918A (en) * | 2022-01-17 | 2022-02-18 | 极限人工智能有限公司 | Endoscope testing method and system |
| CN114061918B (en) * | 2022-01-17 | 2022-03-22 | 极限人工智能有限公司 | Endoscope testing method and system |
| CN115281579A (en) * | 2022-06-17 | 2022-11-04 | 中山市微视医用科技有限公司 | Multifunctional endoscope testing system and using method thereof |
| CN115281579B (en) * | 2022-06-17 | 2023-04-11 | 中山市微视医用科技有限公司 | Multifunctional test system for endoscope and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106017867B (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106017867A (en) | Method for detecting field angle of hard tube endoscope | |
| CN105675266B (en) | Infinite conjugate optical path measures the device and method of the modulation transfer function of optical lens | |
| CN104021540A (en) | Static state calibration device and method for machine visual surface detection equipment | |
| US11200714B2 (en) | Virtual image distance measurement method, apparatus and device | |
| CN106153301B (en) | A kind of detection method for rigid endoscope modulation transfer function | |
| CN104316293B (en) | Device and method for determining parallelism of continuous zooming television optical axis | |
| CN206772557U (en) | A kind of detection means for medical rigid pipe endoscope optical parametric | |
| CN101852677A (en) | Method for improving focal distance detection precision of long focal distance collimator | |
| US11562478B2 (en) | Method and system for testing field of view | |
| CN105203304B (en) | Magnifying power method surveys the optical bench of focal length | |
| CN106153302B (en) | A kind of measurement method for rigid pipe endoscope image deformation | |
| CN202889534U (en) | Visual angle measuring device for camera | |
| CN104596638B (en) | High-resolution multi-wavelength laser intensity distribution detector and measurement method implemented by same | |
| CN104236515B (en) | Field angle automatic measuring device for medical electronic endoscope | |
| CN109283184A (en) | A kind of beauty defects measurement method based on spectral confocal sensor | |
| CN103024427B (en) | Testing method of camera modulation transfer function and testing device thereof | |
| CN201255686Y (en) | Distortion test instrument | |
| CN106153303A (en) | A kind of dioptric detection method of rigid endoscope based on liquid lens | |
| CN107063638B (en) | Testing device based on modularized high-precision microscope system | |
| CN101839691B (en) | Image-based test sieve automatic calibrator | |
| CN108200424A (en) | A kind of adjustment method and system for multiple TDICCD detectors optical axis centerings | |
| CN110132547A (en) | A kind of endoscope head optical performance detecting device and detection method | |
| CN204115707U (en) | Medical electronic endoscope field angle self-operated measuring unit | |
| KR101010533B1 (en) | Living body surface morphological measuring system | |
| CN114608463A (en) | Laser optical axis soft calibration method and device, electronic equipment and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for measuring the field of view angle of rigid tube endoscope Effective date of registration: 20200923 Granted publication date: 20180706 Pledgee: Liu Liang Pledgor: WTI (Beijing) Asia-Pacific Photoelectric Instrument Co.,Ltd. Registration number: Y2020990001157 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |