CN109819175A - A kind of photographic method and camera arrangement - Google Patents
A kind of photographic method and camera arrangement Download PDFInfo
- Publication number
- CN109819175A CN109819175A CN201910063815.7A CN201910063815A CN109819175A CN 109819175 A CN109819175 A CN 109819175A CN 201910063815 A CN201910063815 A CN 201910063815A CN 109819175 A CN109819175 A CN 109819175A
- Authority
- CN
- China
- Prior art keywords
- optical filter
- infrared laser
- filter
- narrow band
- rest area
- 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.)
- Pending
Links
Landscapes
- Blocking Light For Cameras (AREA)
- Studio Devices (AREA)
Abstract
The present invention relates to optical image technology fields, in particular to a kind of photographic method and device, it include: that the photographic method is applied to be provided in the camera arrangement of optical filter rest area, it include: that the difference of the luminous intensity of the luminous intensity and background of target object at scene to be clapped is detected when carrying out image taking whether within the specified range；If within the specified range, not placing narrow band filter in the optical filter rest area, the optical filter placement goes to be arranged between imaging lens and imaging detector；Imaging lens shoot the scene to be clapped through the narrow band filter.This process is by making dark weak signal target and intense light source that can reach more consistent light intensity in different types of optical filter, so as to be shot entire target to obtain blur-free imaging.
Description
Technical field
This application involves laser lighting and optical image technology field, in particular to a kind of photographic method and camera arrangement.
Background technique
In protection and monitor field, security monitoring often is carried out to the driving at night in various sections.Due to vehicle at night
Vehicle lamp area is excessively bright, and the background that it runs over is darker, and the vehicle of approach detector can form halation or be gone out in detector
Existing overexposure phenomenon, thus the case where causing monitoring camera that can not identify license plate and the occupant of approach.In response to this
The prior art generally inhibits strong light using some algorithms of taking pictures, and specific implementation mainly includes backlight compensation mode to background
The modes such as light compensates, white peak inversion mode, re-expose extended dynamic range mode and multistage sampling reduce bias light
With the difference of prospect light.Although this mode can reduce car light halation phenomena impair to a certain extent, for license plate and vehicle
For interior personnel, gray scale is still darker relative to car light light intensity, it is difficult to realize the identification to license plate or occupant.
In addition, it is darker to cover brightness for the excessively high formation halation phenomenon of light intensity there are strong bias light or there are when strong target
Target.And existing method is equally by the way of image procossing.Such method be easy to cause image fault, can not reflect true
Truth condition.
Summary of the invention
In view of this, the application provides a kind of photographic method and camera arrangement to make after the processing that solves to take pictures in the prior art
The problem of cannot reflecting truth at image fault.
The first aspect of the embodiment of the present application provides a kind of photographic method, and the photographic method is applied to be provided with optical filtering
In the camera arrangement of piece rest area, comprising:
When carrying out image taking, detect the luminous intensity of the luminous intensity and background of target object at scene to be clapped difference whether
Within the specified range；
If within the specified range, not placing narrow band filter in the optical filter rest area, the optical filter is placed
Area is arranged between imaging lens and imaging detector；
Imaging lens shoot the scene to be clapped through the narrow band filter.
Optionally, in another embodiment provided by the present application, the narrow band filter is that long wave leads to narrow band filter.
Optionally, in another embodiment provided by the present application, the place optical filter rest area place narrow band filter it
Afterwards further include:
Infrared laser light source is opened, to progress light filling at dim light in the photographed scene.
Optionally, in another embodiment provided by the present application, the infrared laser light source includes impulse type infrared laser
Or continuous wave laser, the spectral coverage and power of the infrared laser respond spectral coverage according to the pulse characteristic of infrared laser, camera
It is selected with camera integration time.
Optionally, in another embodiment provided by the present application, the photographic method further include:
If the difference of the luminous intensity of the luminous intensity and background of target object is within the specified range at scene to be clapped, in the filter
Full impregnated optical filter is switched in mating plate rest area；
Correspondingly, the imaging lens shoot the scene to be clapped through the full impregnated optical filter.
The second aspect of the embodiment of the present application provides a kind of camera arrangement, and the camera arrangement includes:
Imaging lens, optical filter rest area and imaging detector；
Wherein, shown optical filter rest area is arranged between the imaging lens and the imaging detector, for switching
The type for the optical filter placed in the optical filter rest area；
When carrying out image taking, detect the luminous intensity of the luminous intensity and background of target object at scene to be clapped difference whether
Within the specified range；
If within the specified range, not placing narrow band filter in the optical filter rest area；
Imaging lens shoot the scene to be clapped through the narrow band filter.
Optionally, in another embodiment provided by the present application, the narrow band filter is that long wave leads to narrow band filter.
Optionally, in another embodiment provided by the present application, the camera arrangement further includes being placed on specified location
Infrared laser light source；
Correspondingly, after narrow band filter is placed in the optical filter rest area, the infrared laser light source is opened, with right
Light filling is carried out in the photographed scene at dim light.
Optionally, in another embodiment provided by the present application,
The infrared laser light source includes impulse type infrared laser or continuous wave laser, the spectral coverage of the infrared laser
And power responds spectral coverage according to the burst length of infrared laser, camera and camera integration time is selected.
In photographic method provided by the embodiments of the present application, the filter for placing optical filter is set in corresponding camera arrangement
Mating plate rest area is detecting the difference wait clap the luminous intensity of the luminous intensity and background of target object at scene not within the specified range
When, it goes to place narrow band filter in optical filter placement, to filter strong light, to guarantee that imaging lens treat bat by narrow band filter
Clearly Background and clearly target image are obtained when scene is shot.This process passes through different types of optical filter
In make dark weak signal target and intense light source can reach more consistent light intensity, so as to be shot entire target to obtain
Blur-free imaging.
Detailed description of the invention
Fig. 1 is a kind of implementation process schematic diagram of photographic method provided by the embodiments of the present application；
Fig. 2 is a kind of structural schematic diagram of camera arrangement provided by the embodiments of the present application；
Fig. 3 is the location diagram in imaging system provided by the embodiments of the present application between each equipment.
Specific embodiment
A kind of implementation process schematic diagram of photographic method provided by the present application as shown in figure 1, details are as follows: above-mentioned to take pictures
Method is applied to be provided in the camera arrangement of optical filter rest area
Step S11 detects the intense light source luminous intensity and background of target object at scene to be clapped when carrying out image taking
Within the specified range whether the difference of luminous intensity.
Photographic method provided by the embodiments of the present application is applied in specified camera arrangement, and filter is reserved in the camera arrangement
Mating plate rest area can place different types of optical filter in above-mentioned optical filter rest area.When being taken pictures, scene to be clapped is detected
Locate the intense light source luminous intensity of target object and the difference of background luminous intensity whether in specified range.For example, in road security protection
In monitoring, when night takes pictures to passing vehicle, when vehicle car light is opened, the luminous intensity of vehicle periphery is much higher than surrounding ring
Luminous intensity at border, easily causes halation phenomenon so that license plate and occupant can not identify, switch under filter pattern at
Picture detects the luminous intensity of vehicle to be clapped and the difference of ambient enviroment luminous intensity at this time, to determine the optical filter used in taking pictures
Type.
Step S12, if not within the specified range, narrow band filter, the filter are placed in the optical filter rest area
Mating plate placement goes to be arranged between imaging lens and imaging detector.
In the step, using above-mentioned vehicle as target object, if the intense light source luminous intensity and ambient enviroment luminous intensity of vehicle it
Optical filter in camera arrangement in optical filter rest area is then switched to narrow band filter, with mistake not in specified range by difference
Filter too strong light.
Further, the narrow band filter is that long wave leads to narrow band filter.Above-mentioned long wave leads to narrow band filter to visible
The shorter spectral transmittance of the optics spectral coverage such as light is lower or is not through, with higher for a certain wave band used in laser
Transmitance.Long wave as used in this application leads to narrow band filter
OD=4, i.e., 0.01%, and be 90% for the transmitance of the light of the spectral region of 808nm ± 5nm.
Step S13, imaging lens shoot the scene to be clapped through the narrow band filter.
In embodiment provided by the present application, when object and background objects light intensity difference are excessive, pass through switching optical filter
Type to keep this light intensity similar, and then makes imaging lens carry out shooting to the scene to be clapped by narrow band filter and obtains
Whole clearly picture.
Optionally, in another embodiment provided by the present application, the optical filter rest area place narrow band filter it
Afterwards further include:
Infrared laser light source is opened, to progress light filling at dim light in the photographed scene.
Corresponding camera arrangement further includes the infrared laser light source for being placed on specified location in the application；In the optical filtering
After narrow band filter is placed in piece rest area, the infrared laser light source is opened, to carry out at dim light in the photographed scene
Light filling.It is visible light background that above-mentioned camera arrangement, which is mainly used in intense light source, when there are the excessively high backgrounds of brightness in for shooting image
When object, which is saturated in the picture, and after detector is to discovery saturation, optical filter switching element switches long wave and leads to narrowband
Optical filter, while opening infrared laser light source and carrying out floor light, since long wave leads to narrow band filter for daily visible light wave
Section cut-off penetrates, and for the infrared laser transmitance with higher in narrowband, so that the infrared laser of illumination passes through target
Enter in imaging optical system after reflection, narrow band filter cut-off filters out visible light, through infrared laser spectral coverage, is ultimately imaged
Into imaging detector.
Optionally, the infrared laser light source described in another embodiment provided by the present application includes impulse type infrared laser
Or continuous infrared laser, the spectral coverage and power of the infrared laser are responded according to the time of integration of the camera arrangement, camera
Spectral coverage and camera integration time characteristic are selected.
Specifically, the spectrum of above-mentioned infrared laser light source needs that optical filter is cooperated to use, wherein cardiac wave a length of optical filter
Narrowband penetrates.For road safety monitoring camera lens, since vehicle high-speed moves, it is easy to cause using CW-laser illuminator
In camera integration time, pulse laser can be used therefore according to camera integration time facilities according at movement motion blur phenomenon,
Laser spectral coverage power is as mentioned before.
It optionally, further include image processing apparatus in camera arrangement provided by the present application, for differentiating visible light saturation letter
Number, trigger the switch of optical filter switching element and infrared laser.In addition for road protection and monitor field, image procossing dress
It sets when opening laser, since license plate is different for laser reflectivity from occupant, the brightness to license plate is needed to carry out
Inhibit, then image is exported.
In addition, such as being observed when photographic method provided by the present application is also used to observe the dark weak signal target for having bright background in image
Sky flight object when, sun light intensity is excessive, formed halation mask object observing, at this time switch filter pattern under at
Picture carries out floor light using laser active illumination, then carries out imaging.
In photographic method provided by the embodiments of the present application, the filter for placing optical filter is set in corresponding camera arrangement
Mating plate rest area is detecting the difference wait clap the luminous intensity of the luminous intensity and background of target object at scene not within the specified range
When, it goes to place narrow band filter in optical filter placement, to filter strong light, to guarantee that imaging lens treat bat by narrow band filter
Clearly Background and clearly target image are obtained when scene is shot.This process passes through different types of optical filter
In make dark weak signal target and intense light source can reach more consistent light intensity, so as to be shot entire target to obtain
Blur-free imaging.
Embodiment two
Corresponding to above-mentioned photographic method, Fig. 2 and Fig. 3 respectively illustrate the camera arrangement that another embodiment of the application provides
Location diagram in structural schematic diagram and imaging system between each equipment, include in the camera arrangement of Fig. 2 imaging lens 21,
Optical filter rest area 22 and imaging detector 23；
Wherein, shown optical filter rest area 22 is arranged between the imaging lens 21 and the imaging detector 3, is used for
Switch the type for the optical filter placed in the optical filter rest area 22；
When carrying out image taking, detect the luminous intensity of the luminous intensity and background of target object at scene to be clapped difference whether
Within the specified range；
If within the specified range, not placing narrow band filter in the optical filter rest area 2；
Imaging lens 21 shoot the scene to be clapped through the narrow band filter.
Optionally, in another embodiment provided by the present application, the narrow band filter is that long wave leads to narrow band filter.
Optionally, in another embodiment provided by the present application, the camera arrangement further includes being placed on specified location
Infrared laser light source；
Correspondingly, after narrow band filter is placed in the optical filter rest area, the infrared laser light source is opened, with right
Light filling is carried out in the photographed scene at dim light.
Optionally, in another embodiment provided by the present application,
The infrared laser light source includes impulse type infrared laser or continuous wave laser, the spectral coverage of the infrared laser
And power responds spectral coverage according to the time of integration of infrared laser, camera and camera response characteristic is selected.
It optionally, further include image processing apparatus in camera arrangement provided by the present application, for differentiating visible light saturation letter
Number, trigger the switch of optical filter switching element and infrared laser.In addition for road protection and monitor field, image procossing dress
It sets when opening laser, since license plate is different for laser reflectivity from occupant, the brightness to license plate is needed to carry out
Inhibit, then image is exported.
In photographic method provided by the embodiments of the present application, the filter for placing optical filter is set in corresponding camera arrangement
Mating plate rest area is detecting the difference wait clap the luminous intensity of the luminous intensity and background of target object at scene not within the specified range
When, it goes to place narrow band filter in optical filter placement, to filter strong light, to guarantee that imaging lens treat bat by narrow band filter
Clearly Background and clearly target image are obtained when scene is shot.This process passes through different types of optical filter
In make dark weak signal target and intense light source can reach more consistent light intensity, so as to be shot entire target to obtain
Blur-free imaging.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (9)
1. a kind of photographic method, which is characterized in that the photographic method is applied to be provided with the camera arrangement of optical filter rest area
In, comprising:
When carrying out image taking, whether the difference for detecting the luminous intensity of the luminous intensity and background of target object at scene to be clapped is referring to
Determine in range；
If within the specified range, not placing narrow band filter in the optical filter rest area, the optical filter placement goes to set
It sets between imaging lens and imaging detector；
Imaging lens shoot the scene to be clapped through the narrow band filter.
2. photographic method according to claim 1, which is characterized in that the narrow band filter is that long wave leads to narrow-band-filter
Piece.
3. photographic method according to claim 1, which is characterized in that place narrow band filter in the optical filter rest area
Later further include:
Infrared laser light source is opened, to progress light filling at dim light in the photographed scene.
4. photographic method according to claim 3, which is characterized in that the infrared laser light source, which includes that impulse type is infrared, to swash
Light device or continuous wave laser, the spectral coverage and power of the infrared laser are responded according to the burst length of infrared laser, camera
Spectral coverage and camera integration time are selected.
5. photographic method according to claim 1-4, which is characterized in that the photographic method further include:
If the difference of the luminous intensity of the luminous intensity and background of target object is within the specified range at scene to be clapped, in the optical filter
Full impregnated optical filter is switched in rest area；
Correspondingly, the imaging lens shoot the scene to be clapped through the full impregnated optical filter.
6. a kind of camera arrangement, which is characterized in that the camera arrangement includes:
Imaging lens, optical filter rest area and imaging detector；
Wherein, shown optical filter rest area is arranged between the imaging lens and the imaging detector, described for switching
The type for the optical filter placed in optical filter rest area；
When carrying out image taking, whether the difference for detecting the luminous intensity of the luminous intensity and background of target object at scene to be clapped is referring to
Determine in range；
If within the specified range, not placing narrow band filter in the optical filter rest area；
Imaging lens shoot the scene to be clapped through the narrow band filter.
7. camera arrangement according to claim 6, which is characterized in that the narrow band filter is that long wave leads to narrow-band-filter
Piece.
8. camera arrangement according to claim 6, which is characterized in that the camera arrangement further includes being placed on designated position
The infrared laser light source at place；
Correspondingly, after narrow band filter is placed in the optical filter rest area, the infrared laser light source is opened, to described
Light filling is carried out in photographed scene at dim light.
9. camera arrangement according to claim 8, which is characterized in that the infrared laser light source, which includes that impulse type is infrared, to swash
Light device or continuous laser,
The infrared laser light source includes impulse type infrared laser or continuous wave laser, the spectral coverage and function of the infrared laser
Rate responds spectral coverage according to the pulse characteristic of infrared laser, camera and camera integration time is selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063815.7A CN109819175A (en) | 2019-01-23 | 2019-01-23 | A kind of photographic method and camera arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910063815.7A CN109819175A (en) | 2019-01-23 | 2019-01-23 | A kind of photographic method and camera arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109819175A true CN109819175A (en) | 2019-05-28 |
Family
ID=66604885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910063815.7A Pending CN109819175A (en) | 2019-01-23 | 2019-01-23 | A kind of photographic method and camera arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109819175A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428637A (en) * | 2019-07-24 | 2019-11-08 | 华为技术有限公司 | A kind of road gate grasp shoot method and road gate capturing system |
| CN111312850A (en) * | 2020-04-07 | 2020-06-19 | 向军 | Photoelectric triode anti-saturation circuit |
| CN111614892A (en) * | 2020-04-28 | 2020-09-01 | 深圳英飞拓智能技术有限公司 | Face image acquisition method, shooting device and computer-readable storage medium |
| CN111641786A (en) * | 2020-05-21 | 2020-09-08 | 北京集光通达科技股份有限公司 | Method for improving snapshot imaging effect |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203870371U (en) * | 2014-05-20 | 2014-10-08 | 浙江宇视科技有限公司 | Optical filter that inhibits partial overexposure and monitoring camera internally equipped with optical filter |
| CN104253976A (en) * | 2014-09-03 | 2014-12-31 | 北京汉王智通科技有限公司 | Surveillance camera filtering system and method |
| CN204077513U (en) * | 2014-09-30 | 2015-01-07 | 咸洋 | Vehicle-mounted laser assistant images acquisition device |
| CN105467543A (en) * | 2015-12-03 | 2016-04-06 | 中国科学院长春光学精密机械与物理研究所 | Device for quickly replacing optical filter |
| CN206164701U (en) * | 2016-10-24 | 2017-05-10 | 奇瑞汽车股份有限公司 | On -vehicle infrared night -vision device |
-
2019
- 2019-01-23 CN CN201910063815.7A patent/CN109819175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203870371U (en) * | 2014-05-20 | 2014-10-08 | 浙江宇视科技有限公司 | Optical filter that inhibits partial overexposure and monitoring camera internally equipped with optical filter |
| CN104253976A (en) * | 2014-09-03 | 2014-12-31 | 北京汉王智通科技有限公司 | Surveillance camera filtering system and method |
| CN204077513U (en) * | 2014-09-30 | 2015-01-07 | 咸洋 | Vehicle-mounted laser assistant images acquisition device |
| CN105467543A (en) * | 2015-12-03 | 2016-04-06 | 中国科学院长春光学精密机械与物理研究所 | Device for quickly replacing optical filter |
| CN206164701U (en) * | 2016-10-24 | 2017-05-10 | 奇瑞汽车股份有限公司 | On -vehicle infrared night -vision device |
Non-Patent Citations (1)
| Title |
|---|
| 飞宇达光电；网址：HTTPS://WWW.JIANSHU.COM/P/21E5A8ED004A: "《飞宇达光电808nm带通滤光片》", 21 November 2017 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428637A (en) * | 2019-07-24 | 2019-11-08 | 华为技术有限公司 | A kind of road gate grasp shoot method and road gate capturing system |
| CN111312850A (en) * | 2020-04-07 | 2020-06-19 | 向军 | Photoelectric triode anti-saturation circuit |
| CN111614892A (en) * | 2020-04-28 | 2020-09-01 | 深圳英飞拓智能技术有限公司 | Face image acquisition method, shooting device and computer-readable storage medium |
| CN111641786A (en) * | 2020-05-21 | 2020-09-08 | 北京集光通达科技股份有限公司 | Method for improving snapshot imaging effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109819175A (en) | A kind of photographic method and camera arrangement | |
| JP3214195B2 (en) | Driver photography device | |
| US11403836B2 (en) | Optical overlay device | |
| US20040047491A1 (en) | Image capturing device with reflex reduction | |
| US6469734B1 (en) | Video safety detector with shadow elimination | |
| US10595014B2 (en) | Object distance determination from image | |
| US7777787B2 (en) | Preventing flicker effects in video electronic devices | |
| CN104838644B (en) | Seek the camera chain and method of detection zone image information | |
| CA2438724C (en) | Method and apparatus for inhibiting projection of selected areas of a projected image | |
| US5631976A (en) | Object imaging system | |
| EP2541321A1 (en) | Video-image displaying screen, video-image displaying system, and method for detecting secret-filming camera | |
| AU2002306508A1 (en) | Method and apparatus for inhibiting projection of selected areas of a projected image | |
| WO2007059444A2 (en) | Systems and methods for disabling recording features of cameras | |
| CN106998422A (en) | A kind of automatic identification is taken on the sly the apparatus and method of camera lens | |
| CN102053360B (en) | Initiative illuminating night vision device and method | |
| JP2006351011A (en) | Color imaging system for locating retroreflector | |
| JP2009055504A (en) | Monitoring camera device | |
| KR102200540B1 (en) | Apparatus and method for obtaining multi-brightness image | |
| US20150208005A1 (en) | Camera system, especially for a vehicle, and method for ascertaining image information of a signal source pulsed as a function of time | |
| JP2004229034A (en) | Day/night camera incorporating infrared illumination | |
| KR102200541B1 (en) | Apparatus and method for obtaining multi-brightness image | |
| US11118873B2 (en) | Strobed illuminators (dazzler) with synchronized imaging optics | |
| US9091775B1 (en) | Method and apparatus for detecting and locating camera illuminators | |
| JP3899207B2 (en) | Image sensor | |
| JPH0388481A (en) | Halation prevention ccd camera equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |
|
| RJ01 | Rejection of invention patent application after publication |