CN108881901A - A kind of the resolution detection device and detection method of text and number - Google Patents
A kind of the resolution detection device and detection method of text and number Download PDFInfo
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- CN108881901A CN108881901A CN201811081450.2A CN201811081450A CN108881901A CN 108881901 A CN108881901 A CN 108881901A CN 201811081450 A CN201811081450 A CN 201811081450A CN 108881901 A CN108881901 A CN 108881901A
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- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 238000005286 illumination Methods 0.000 claims abstract description 44
- 238000007689 inspection Methods 0.000 claims description 22
- 239000007787 solid Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000004297 night vision Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 13
- 238000003384 imaging method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
Abstract
A kind of detection based on different law enforcement audio recorders to the resolution of text sum number character number in GB/T 9704-2012 Party and government offices official documents format, which is a reference value of particular product performance parameters practical application.Pass through this detection method, it compares between different product under different distance and varying environment illumination, the superiority and inferiority of actual imaging when same portion of taking pictures meets GB/T 9704-2012 Party and government offices official documents format file, provides important parameter foundation of the testing product in purchase or use process.
Description
Technical field
The present invention relates to detection field, the resolution detection device and detection method of specially a kind of text and number are special
It is not a kind of detection law enforcement video and audio recorder to text sum number character number in GB/T 9704-2012 Party and government offices official documents format
Deng resolution detection device and detection method.
Background technique
At present national standard and professional standard all without for law enforcement video and audio recorder for text and numerical chracter
The not rigid regulation of resolution detection, but law-enforcing recorder force in the environment such as administration in Judicial mediation, law court in use,
Need shooting at close range or take pictures conciliation statement and both sides' signature.
Based on different law-enforcing environments, such as the good light luminance of weather is sufficient or indoor light brightness is general, opposite
It signs in darker environment, it is real with the high law enforcement evidence taking equipment of a clarity, or the equipment common with a clarity
The identification of the electronic evidence data of border shooting photograph may be completely different；Some law enforcement video and audio recorder devices light not
In the case where very good, how to clap and all can not clap clear photograph, conciliation statement content or signature can not pick out at all and.
The art of this patent sets a set of sample manuscript file aiming at GB/T 9704-2012 Party and government offices official documents format, packet
It includes the typesetting of text, spacing, font, number, meet etc., for this sample manuscript, under different vertical line distances, with not
Same law-enforcing recorder is taken pictures and is shot with video-corder, and captured photo or photo and video files are mentioned with unified authoritative tool image software
Clearest photo is taken, according to identification table, marks off the levels of sharpness under different linear distances.This measurement method and
Measurement result is allowed and is chosen using the law enfrocement official of law-enforcing recorder and in use process, provide properties of product reference.
Summary of the invention
Technical problem solved by the invention is to provide resolution detection device and the detection side of a kind of text and number
Method, especially a kind of detection law enforcement video and audio recorder is to text sum number word in GB/T 9704-2012 Party and government offices official documents format
The resolution detection device and detection method of symbol etc., to solve the problems mentioned in the above background technology.
Technical problem solved by the invention is realized using following technical scheme：
On the one hand, the present invention provides the resolution detection devices of a kind of text and number, including：Adjustable support is held by inspection
Method recorder, integrated solid fixed rack, ambient light illumination meter tester, the label of display distance, route, computer；It is described to be held by inspection
Method recorder is arranged on integrated solid fixed rack, and the adjustable support two sides are respectively set ambient light illumination meter tester and show
Show the label of distance；Adjustable support is arranged in the integrated solid fixed rack intermediate vertical.
It is described to be passed through connection computer by inspection law-enforcing recorder, photos and videos evidence material can be directly transmitted to electricity
Brain.
On the other hand, invention further provides the detection methods of a kind of text and the resolution of number, including：
1. adjustable support fix by inspection law-enforcing recorder after, by inspection law-enforcing recorder upright projection in adjustable support
Centre, positive and negative deviation 5cm；
2. by A4 sample manuscript printing after, with ambient light illumination meter tester, display distance label together be placed on adjustable support；
3.A4 sample manuscript and by inspection law-enforcing recorder distance, adjusted by adjustable support, may be selected zoom parasang
1cm；
4. adjusting lamplight brightness, subject to the data shown by ambient light illumination measuring instrument, overnight sight 0.01Ix illumination is created
Under, law-enforcing recorder distance A4 sample manuscript is adjusted from 10cm and is raised to 20cm step by step, is taken pictures under each distance state 3, is shot 3 seconds,
Time interval is 3 seconds；Shooting data of taking pictures is saved by inspection law-enforcing recorder；
5. it is rapid with reference to step 4, it is followed successively by：20-45cm is tested under indoor 500Ix illumination；30- is tested under outdoor 1500Ix illumination
60cm；Law-enforcing recorder is allowed to save the photos and videos evidentiary material under different condition.
6. under the conditions of each ambient light illumination, adjust law-enforcing recorder between A4 sample manuscript at a distance from, allow A4 sample manuscript to become and hold
Method recorder is found a view picture central portion point（It is not 1/5 for fear of picture of entirely finding a view）, opened with continuous shooting 3 within shooting one time 3 seconds（Often
3 second beats are spaced according to one）；
7. sliding law-enforcing recorder distance A4 pattern original text distance interval is routinely 1cm, different according to the actual situation, also adjustable
For mobile interval 3cm etc. every time；
8. under the conditions of same ambient light illumination, as the distance between law-enforcing recorder and A4 sample manuscript adjust, the bat of law-enforcing recorder
After taking the photograph and taking pictures, the clarity of video image can change, it may appear that identification/clarity data attenuation trend；
9. testing the shooting of 10-15 group and data of taking pictures respectively under three kinds of ambient light illuminations, it is ensured that sampling is not less than 40 groups,
It is total to be not less than 40 sections of videos, be not less than 120 photos.
10. permission is in overnight sight（Most bottom illumination conditions in this standard）, open light compensating lamp or infrared night vision
Lamp improves clarity；Under other two kinds of illumination environments, it is not turned on infrared night vision or light compensating lamp；
11. under the conditions of same ambient light illumination, same A4 sample manuscript, same distance, what different law-enforcing recorders was taken pictures
Clarity can be discrepant；
12. video or image client software are run, it can normal preview video image；
13. counting specific identifiable text and meeting, AQX identification/levels of sharpness is obtained.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of detection of specification of the present invention is enforced the law audio recorder
Detection to the resolution of text sum number word in GB/T 9704-2012 Party and government offices official documents format, which is product
One reference value of energy parameter practical application, by this detection method, subjects Products is in different distance and varying environment illumination
Under, the superiority and inferiority of actual imaging, provides when same portion of taking pictures meets GB/T 9704-2012 Party and government offices official documents format file
Important parameter foundation of the testing product in purchase or use process.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Adjustable support 1, by inspection law-enforcing recorder 2, integrated solid fixed rack 3, ambient light illumination meter tester 4, display away from
From label 5, route 6, computer 7.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect, it is clear that described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work, in addition, designing in patent
All connection/the connection relationships arrived not singly refer to that building directly connects, and addition can be passed through according to specific implementation situation by referring to
Or reduce all couple auxiliaries, to form the coupling structure more having, in order to make implement technical means of the invention, creation characteristic,
Reach purpose to be easy to understand with effect, following further describes the present invention in conjunction with specific drawings.
On the one hand, the present invention provides the resolution detection devices of a kind of text and number, including：Adjustable support 1, by
Examine law-enforcing recorder 2, integrated solid fixed rack 3, ambient light illumination meter tester 4, the label 5 of display distance, route 6, computer 7；
Described to be arranged on integrated solid fixed rack 3 by inspection law-enforcing recorder 2, environment photograph is respectively set in 1 two sides of adjustable support
The label 5 of degree meter tester 4 and display distance；Adjustable support 1 is arranged in 3 intermediate vertical of integrated solid fixed rack.
It is described that computer 7 is connected by route 6 by inspection law-enforcing recorder 2, it can directly transmit photos and videos evidence material
To computer 7.
On the other hand, invention further provides the detection methods of a kind of text and the resolution of number, including：
1. adjustable support fix by inspection law-enforcing recorder after, by inspection law-enforcing recorder upright projection in adjustable support
Centre, positive and negative deviation 5cm；
2. by A4 sample manuscript printing after, with ambient light illumination meter tester, display distance label together be placed on adjustable support；
3.A4 sample manuscript and by inspection law-enforcing recorder distance, adjusted by adjustable support, may be selected zoom parasang
1cm；
4. adjusting lamplight brightness, subject to the data shown by ambient light illumination measuring instrument, overnight sight 0.01Ix illumination is created
Under, law-enforcing recorder distance A4 sample manuscript is adjusted from 10cm and is raised to 20cm step by step, is taken pictures under each distance state 3, is shot 3 seconds,
Time interval is 3 seconds；Shooting data of taking pictures is saved by inspection law-enforcing recorder；
5. it is rapid with reference to step 4, it is followed successively by：20-45cm is tested under indoor 500Ix illumination；30- is tested under outdoor 1500Ix illumination
60cm；Law-enforcing recorder is allowed to save the photos and videos evidentiary material under different condition.
6. under the conditions of each ambient light illumination, adjust law-enforcing recorder between A4 sample manuscript at a distance from, allow A4 sample manuscript to become and hold
Method recorder is found a view picture central portion point（It is not 1/5 for fear of picture of entirely finding a view）, opened with continuous shooting 3 within shooting one time 3 seconds（Often
3 second beats are spaced according to one）；
7. sliding law-enforcing recorder distance A4 pattern original text distance interval is routinely 1cm, different according to the actual situation, also adjustable
For mobile interval 3cm etc. every time；
8. under the conditions of same ambient light illumination, as the distance between law-enforcing recorder and A4 sample manuscript adjust, the bat of law-enforcing recorder
After taking the photograph and taking pictures, the clarity of video image can change, it may appear that identification/clarity data attenuation trend；
9. testing the shooting of 10-15 group and data of taking pictures respectively under three kinds of ambient light illuminations, it is ensured that sampling is not less than 40 groups,
It is total to be not less than 40 sections of videos, be not less than 120 photos.
10. permission is in overnight sight（Most bottom illumination conditions in this standard）, open light compensating lamp or infrared night vision
Lamp improves clarity；Under other two kinds of illumination environments, it is not turned on infrared night vision or light compensating lamp；
11. under the conditions of same ambient light illumination, same A4 sample manuscript, same distance, what different law-enforcing recorders was taken pictures
Clarity can be discrepant；
12. video or image client software are run, it can normal preview video image；
13. counting specific identifiable text and meeting, AQX identification/levels of sharpness is obtained.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of detection of specification of the present invention is enforced the law audio recorder
Detection to the resolution of text sum number word in GB/T 9704-2012 Party and government offices official documents format, which is product
One reference value of energy parameter practical application, by this detection method, subjects Products is in different distance and varying environment illumination
Under, the superiority and inferiority of actual imaging, provides when same portion of taking pictures meets GB/T 9704-2012 Party and government offices official documents format file
Important parameter foundation of the testing product in purchase or use process；On the other hand, it is determined that identification/levels of sharpness
Description, it is determined that specific identification/levels of sharpness is with inventor from AQX identification/levels of sharpness of wound.
Preferably, all inspections of the invention carry out under the following conditions：Environment temperature：40 DEG C~70 DEG C of ﹣；Environment phase
To humidity：45%~75%；C) atmospheric pressure：86kpa~106kpa；D) it examines dry without strong reflector and strong electromagnetic around place
It disturbs；Law-enforcing recorder preheats 5min after connecting power supply.It 5.1.3 should all be in reference in relation to public test with accuracy
It is carried out under operating condition, and law-enforcing recorder and testing equipment should all be stablized under reference operating condition；Test test used
Instrument and equipment, limit of intrinsic error should be no more than the 1/5 of tested test system limit of intrinsic error.
Preferably, technical requirements of the invention are：1. shooting video, picture of taking pictures are necessary for unified original, should wrap
Containing primitive attribute and anti-counterfeiting information；2. image should be able to the features such as display visibility Sign Board or pickup area, clarity should be able to expire
Foot manually assists the requirement for judging visibility scale；3. the evidence taking equipment that just allows to enforce the law in a dark environment open white light or
Person's infrared light compensating lamp, to enhance actual effect；White light or infrared lamp are not turned in other environment；4. hot operation：It should be able to
Bear 40 DEG C, in the hot test of 2h, the documentation that evidence taking equipment shoots with video-corder or takes pictures, appearance should have no obvious deformation,
Function should keep normal；5. low-temperature working：It should be able to bear -10 DEG C, in the low-temperature test of 2h, evidence taking equipment is shot with video-corder or clapped
According to documentation, appearance should have no obvious deformation, and function should keep normal.
Preferably, the present invention is detection law-enforcing recorder to the sample for meeting GB/T 9704-2012 Party and government offices official documents format
Original text file, comprising meeting Chinese character, number, the symbol of the different font size sizes of the specification in the sample manuscript file, text composition, in the ranks
Away from etc., by simulating under common varying environment illumination conditions, for same a sample manuscript file, per a law-enforcing recorder
Shoot distance value when clear identifiable picture camera shooting.This detection method, can be consistent in extraneous all environmental conditions
Under the premise of, different law-enforcing recorder shootings meet the actual range of recognizable/clarity.Such as：Brightness conditions are in the room 500Ix
In environment, the good law-enforcing recorder of imaging effect can take clearly evidence material at Judicial mediation book 30cm；It forms
As the bad law-enforcing recorder of effect, general clearly evidence material can be just taken at Judicial mediation book 10cm.
Preferably, of the invention is a kind of detection method, and some specific continuous datas is needed to make during atual detection
Testing result for the condition that detection foundation is realized with outside, and generation is also continuous data as a result, must be with CMA reality
The detection unit of room environmental and qualification prerequisites is tested, if be only final according to the continuous data that method of the invention detects
The result of the method for the present invention realizes legitimacy.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of detection of specification of the present invention is enforced the law audio recorder
Detection to the resolution of text sum number word in GB/T 9704-2012 Party and government offices official documents format, which is product
One reference value of energy parameter practical application, by this detection method, subjects Products is in different distance and varying environment illumination
Under, the superiority and inferiority of actual imaging, provides when same portion of taking pictures meets GB/T 9704-2012 Party and government offices official documents format file
Important parameter foundation of the testing product in purchase or use process.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, the technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, claimed range of the invention by appended claims and
Its equivalent thereof.
Claims (2)
1. the resolution detection device of a kind of text and number, it is characterised in that：Including：Adjustable support is recorded by inspection law enforcement
Instrument, integrated solid fixed rack, ambient light illumination meter tester, the label of display distance, route, computer；It is described to be recorded by inspection law enforcement
Instrument is arranged on integrated solid fixed rack, and ambient light illumination meter tester and display distance is respectively set in the adjustable support two sides
Label；Adjustable support is arranged in the integrated solid fixed rack intermediate vertical；It is described to be connected by inspection law-enforcing recorder by route
Computer is connect, can directly transmit photos and videos evidence material to computer.
2. the detection method of a kind of text and the resolution of number, it is characterised in that：Including：
（1）Adjustable support fix by inspection law-enforcing recorder after, by inspection law-enforcing recorder upright projection in adjustable support
Centre, positive and negative deviation 5cm；
（2）By A4 sample manuscript printing after, with ambient light illumination meter tester, display distance label together be placed on adjustable support；
（3）A4 sample manuscript and by inspection law-enforcing recorder distance, adjusted by adjustable support, may be selected zoom parasang
1cm；
（4）Lamplight brightness is adjusted, subject to the data shown by ambient light illumination measuring instrument, creates overnight sight 0.01Ix illumination
Under, law-enforcing recorder distance A4 sample manuscript is adjusted from 10cm and is raised to 20cm step by step, is taken pictures under each distance state 3, is shot 3 seconds,
Time interval is 3 seconds；Shooting data of taking pictures is saved by inspection law-enforcing recorder；
（5）It is rapid with reference to step 4, it is followed successively by：20-45cm is tested under indoor 500Ix illumination；30- is tested under outdoor 1500Ix illumination
60cm；Law-enforcing recorder is allowed to save the photos and videos evidentiary material under different condition；
（6）Under the conditions of each ambient light illumination, adjust law-enforcing recorder between A4 sample manuscript at a distance from, allow A4 sample manuscript become law enforcement note
Record instrument is found a view picture central portion point（It is not 1/5 for fear of picture of entirely finding a view）, opened with continuous shooting 3 within shooting one time 3 seconds（At interval of
3 second beats shine one）；
（7）Sliding law-enforcing recorder distance A4 pattern original text distance interval is routinely 1cm, different according to the actual situation, can also be adjusted
It is whole to be spaced 3cm etc. to be mobile every time；
（8）Under the conditions of same ambient light illumination, as the distance between law-enforcing recorder and A4 sample manuscript adjust, the bat of law-enforcing recorder
After taking the photograph and taking pictures, the clarity of video image can change, it may appear that identification/clarity data attenuation trend；
（9）Under three kinds of ambient light illuminations, the shooting of 10-15 group and data of taking pictures are tested respectively, it is ensured that sampling is not less than 40 groups,
It is total to be not less than 40 sections of videos, be not less than 120 photos；
（10）Only allow in overnight sight（Most bottom illumination conditions in this standard）, light compensating lamp or infrared night vision lamp are opened,
Improve clarity；Under other two kinds of illumination environments, it is not turned on infrared night vision or light compensating lamp；
（11）Under the conditions of same ambient light illumination, same A4 sample manuscript, same distance, what different law-enforcing recorders was taken pictures
Clarity can be discrepant；
（12）Video or image client software are run, it can normal preview video image；
（13）It counts specific identifiable text and meets, obtain AQX identification/levels of sharpness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081450.2A CN108881901A (en) | 2018-09-17 | 2018-09-17 | A kind of the resolution detection device and detection method of text and number |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811081450.2A CN108881901A (en) | 2018-09-17 | 2018-09-17 | A kind of the resolution detection device and detection method of text and number |
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| Publication Number | Publication Date |
|---|---|
| CN108881901A true CN108881901A (en) | 2018-11-23 |
Family
ID=64324082
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| CN201811081450.2A Pending CN108881901A (en) | 2018-09-17 | 2018-09-17 | A kind of the resolution detection device and detection method of text and number |
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| WO2018051949A1 (en) * | 2016-09-14 | 2018-03-22 | 富士フイルム株式会社 | Evaluation system and evaluation method |
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| CN108174148A (en) * | 2017-12-14 | 2018-06-15 | 中国航空工业集团公司上海航空测控技术研究所 | Camera brightness simulated environment platform in a kind of aircraft cabin |
| CN207588973U (en) * | 2017-11-06 | 2018-07-06 | 深圳市思航信息科技有限公司 | A kind of collapsible high photographing instrument adjusted convenient for height |
| CN209299426U (en) * | 2018-09-17 | 2019-08-23 | 安徽星格科技有限公司 | A kind of resolution detection device of text and number |
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2018
- 2018-09-17 CN CN201811081450.2A patent/CN108881901A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070002143A1 (en) * | 2005-06-23 | 2007-01-04 | David Elberbaum | Method and apparatus for measuring illumination and camera performances |
| CN103731665A (en) * | 2013-12-25 | 2014-04-16 | 广州计量检测技术研究院 | Digital camera image quality comprehensive detection device and method |
| CN205408062U (en) * | 2016-02-22 | 2016-07-27 | 信利光电股份有限公司 | Module detection device makes a video recording |
| WO2018051949A1 (en) * | 2016-09-14 | 2018-03-22 | 富士フイルム株式会社 | Evaluation system and evaluation method |
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Application publication date: 20181123 |