CN104104919B - A kind of coaxial antidote of the camera lens of monitor - Google Patents
A kind of coaxial antidote of the camera lens of monitor Download PDFInfo
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- CN104104919B CN104104919B CN201410354727.XA CN201410354727A CN104104919B CN 104104919 B CN104104919 B CN 104104919B CN 201410354727 A CN201410354727 A CN 201410354727A CN 104104919 B CN104104919 B CN 104104919B
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- pitch rotation
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Abstract
The coaxial antidote of camera lens of the monitor of the present invention, the monitor includes head, camera lens, video camera, is characterised by, coaxial antidote includes：A) sets most wide-angle presetting bit；B) sets middle presetting bit；C) sets most focal length presetting bit；D) current position state of monitors；E) the movement position state of monitors；F) such as central points do not change, according to=+（‑）、=+（‑）, corrected；G) such as central points change, according to=+（‑）+、=+（‑）+、It is corrected.The coaxial antidote of camera lens of the present invention, using current location and moving to the presetting bit data of position both sides, realize and the deviation of camera lens optical axis is corrected, monitoring objective can be made to be in monitored picture center all the time, it is to avoid the phenomenon of picture centre deviation after conventional zoom.
Description
Technical field
The present invention relates to a kind of coaxial antidote of the camera lens of monitor, in particular, more particularly to one kind can be avoided
Due to the coaxial antidote of camera lens for the monitor that the alignment of camera lens is impacted to Surveillance center's point.
Background technology
With the further development of security and guard technology, intelligent, unattended feature turn into trend that monitoring system develops it
One, monitor plays very important effect in monitoring system and realized more, it is necessary to coordinate with daemon software as headend equipment
Many intelligent, automation functions, event detection, frame choosing amplification just belong to one of such function.The camera lens of monitor is generally located
In wide-angle, when finding to have abnormal generation in visual field, monitor amplification display placed in the middle to abnormity point, but be due to long lens automatically
The alignment of head is poor, and when moving focal length direction to from wide-angle, target will be generally offset from display screen center, or even can deflect away from display screen.
As shown in Fig. 1 in Figure of description, when camera lens in zoom value isPosition when, the optical axis of camera lens is in
Between solid line direction；And when the zoom value of camera lens isWhen, its optical axis may be consistent with the dotted line direction of top, works as camera lens
Zoom value beWhen, its optical axis is possible to consistent with the dashdotted direction of lower section again.Become in the visual field of monitor
During change, if positioned according to the thick-and-thin principle of the optical axis of camera lens to target, actual acquisition picture and ideal are easily caused
Picture has differences.As shown in Fig. 2 solid-line rectangle inframe is currently practical monitor area, if now empty to rectangle
Wire frame favored area is monitored, and should ideally obtain monitoring image as shown in Figure 3, but due to camera lens alignment compared with
Difference, the actual image obtained is possible to as shown in Figure 4.If the alignment not to camera lens is corrected, detection target may be made
Deviate Surveillance center or not in monitoring range.
If can to camera lens from wide-angle to focal length state under, the lens axis corresponding to zoom value is corrected, can be effective
Monitored picture is avoided to deviate the phenomenon of target area.But if survey and draw the corresponding lens axis position of each zoom value（Camera lens
Axial location is horizontally rotated angle and pitch rotation angle and embodied by head）, very big workload can be brought（Such as rope
Buddhist nun needs to survey and draw 16384 groups of data）, bring great development of manpower cost and computational complexity.
The content of the invention
There is provided a kind of coaxial antidote of the camera lens of monitor in order to overcome the shortcoming of above-mentioned technical problem by the present invention.
The coaxial antidote of camera lens of the monitor of the present invention, the monitor includes head, camera lens, video camera, shooting
Machine obtains the image in visual field by camera lens, and camera lens can carry out zoom action, and head can drive video camera carry out level, pitching fortune
It is dynamic；It is particular in that the coaxial antidote of camera lens is realized by following steps：A) sets most wide-angle presetting bit,
Make camera motion to most wide-angle position, choose a certain scenery in visual field as object of reference, adjust head horizontally rotates angle
With pitch rotation angle, make object of reference be located at visual field picture center, write down now horizontally rotate angle, pitching
Rotational angleWith camera lens zoom value,For the 1st presetting bit coaxially corrected；B) sets middle preset
Position, makes camera lens gradually be moved from most wide-angle to most focal length, on the premise of keeping object of reference to be located at visual field picture center, according to
It is secondary to recordHead at individual position horizontally rotates angle, pitch rotation angleWith camera lens zoom value,For coaxially correctIndividual presetting bit；C) sets most focal length presetting bit, makes camera motion to most focal length state,
Adjust head horizontally rotates angle and pitch rotation angle, and object of reference is located at the center of visual field picture, writes down this
When horizontally rotate angle, pitch rotation angleWith camera lens zoom value,For coaxially correctIndividual presetting bit；D) current position state of monitors, if the current zoom value of camera lens is, head horizontally rotates angle
Spend and be, pitch rotation angle beIf being located in presetting bitThe zoom value of both sides is respectively、,＜＜,、Corresponding head horizontally rotate angle and pitch rotation angle is respectivelyWith；E) the movement position state of monitors, be if camera lens will move to zoom valuePosition at, in presetting bit
It is located atThe zoom value of both sides is respectively、,＜＜,、Corresponding head
Horizontally rotate angle and pitch rotation angle is respectivelyWith, the head after correction horizontally rotates angle=+（-）, the head pitch rotation angle after correction=+（-）；If f) the monitoring of monitors
Central point does not change, then head according to=+（-）Horizontally rotate, according to=+（-
）Carry out pitch rotation, camera lens according toCarry out zoom, you can the picture that target is located at center is obtained, without target
Deviate the situation at picture center；If g) Surveillance center's point of monitors changes, if moving to target by Current central point
The horizontally rotate angle, pitch rotation angle of central point head be respectively、；Then head according to=+（-）+Horizontally rotate, according to=+（-）+Carry out pitch rotation, camera lens according toBecome
Times, you can the picture that target is located at center is obtained, without the off-centered situation of target.
Selected preset bits number in the coaxial antidote of camera lens of the monitor of the present invention, step c)≥10。
The beneficial effects of the invention are as follows：The coaxial antidote of camera lens of the present invention, camera lens is changed by most wide-angle to most focal length
During, remain that the object of reference of selection is located at the center of picture, collectionGroup horizontally rotates angle by head, bow
Face upward rotational angleWith camera lens zoom valueDuring the presetting bit data of composition, monitor zoom, current location is utilized
With the presetting bit data of position both sides to be moved to, realize that the deviation to camera lens optical axis is corrected, monitoring objective can be made all the time
In monitored picture center, it is to avoid the phenomenon that picture centre deviates after conventional zoom.
If front and rear Surveillance center does not change, head according to=+（-）Horizontally rotate, according to=+（-）Pitch rotation realizes the correction of camera lens optical axis；If Surveillance center's point changes, head according to=+（-）+Horizontally rotate, according to=+（-）+Pitch rotation come realize camera lens optical axis rectify
Just,、Decibel is to horizontally rotate angle, pitch rotation angle by what Current central point moved to target's center's point head.
Brief description of the drawings
Fig. 1 gives the schematic diagram of the optical axis of camera lens under different zoom values not on the same line；
Fig. 2 gives the schematic diagram of current monitor picture and monitor area to be wanted；
The image that Fig. 3 is obtained when giving camera lens optical axis for ideal line；
The image for the area to be monitored that Fig. 4 obtains for reality.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, for telephoto lens, when camera lens is in different zoom positions, its optical axis may not be located at same
On straight line, i.e. the alignment of telephoto lens is poor.Because the alignment of telephoto lens is poor, in Fig. 2 in monitored picture
Dotted line frame favored area be amplified monitoring during, to obtain preferable picture as shown in Figure 3, but can actually obtain such as
The picture in the off-center region of target shown in Fig. 4, What is more, and target may not be in monitored picture.
The coaxial antidote of camera lens of the monitor of the present invention, the monitor includes head, camera lens, video camera, shooting
Machine obtains the image in visual field by camera lens, and camera lens can carry out zoom action, and head can drive video camera carry out level, pitching fortune
It is dynamic；The coaxial antidote of camera lens is realized by following steps：
A) sets most wide-angle presetting bit, makes camera motion to most wide-angle position, a certain scenery chosen in visual field is used as ginseng
According to thing, adjust head horizontally rotates angle and pitch rotation angle, object of reference is located at the center of visual field picture, writes down
Now horizontally rotate angle, pitch rotation angleWith camera lens zoom value,For coaxially correct the 1st
Individual presetting bit；
B) sets middle presetting bit, camera lens is gradually moved from most wide-angle to most focal length, is located at visual field keeping object of reference
On the premise of picture center, record successivelyHead at individual position horizontally rotates angle, pitch rotation angle
DegreeWith camera lens zoom value,For coaxially correctIndividual presetting bit；
C) sets most focal length presetting bit, makes camera motion to most focal length state, adjusts horizontally rotating angle and bowing for head
Face upward rotational angle, and object of reference is located at the center of visual field picture, write down now horizontally rotate angle, pitching turn
Dynamic angleWith camera lens zoom value,For coaxially correctIndividual presetting bit；
Value is bigger, more accurate to the correction of the alignment of camera lens optical axis, but should not also take it is excessive, typically with more than 10
It is advisable.
D) current position state of monitors, if the current zoom value of camera lens is, the angle that horizontally rotates of head is, pitch rotation angle beIf being located in presetting bitThe zoom value of both sides is respectively、,＜
＜,、Corresponding head horizontally rotate angle and pitch rotation angle is respectivelyWith；
E) the movement position state of monitors, be if camera lens will move to zoom valuePosition at, presetting bit middle position
InThe zoom value of both sides is respectively、,＜＜,、The water of corresponding head
Flat rotational angle and pitch rotation angle are respectivelyWith, the head after correction horizontally rotates angle=+（-）, the head pitch rotation angle after correction=+（-）；
If f) Surveillance center's point of monitors does not change, head according to=+（-）Carry out
Horizontally rotate, according to=+（-）Carry out pitch rotation, camera lens according toCarry out zoom, you can obtain target and be located at
The picture at center, the situation at picture center is deviateed without target；
If g) Surveillance center's point of monitors changes, if moving to target's center's point head by Current central point
Horizontally rotate angle, pitch rotation angle be respectively、；Then head according to=+（-）+Carry out
Horizontally rotate, according to=+（-）+Carry out pitch rotation, camera lens according toCarry out zoom, you can obtain target
Picture positioned at center, without the off-centered situation of target.
Claims (2)
1. a kind of coaxial antidote of the camera lens of monitor, the monitor includes head, camera lens, video camera, video camera passes through
Camera lens obtains the image in visual field, and camera lens can carry out zoom action, and head can drive video camera carry out level, elevating movement；Its
It is characterised by, the coaxial antidote of camera lens is realized by following steps：
A) sets most wide-angle presetting bit, makes camera motion to most wide-angle position, a certain scenery chosen in visual field is used as reference
Thing, adjust head horizontally rotates angle and pitch rotation angle, object of reference is located at the center of visual field picture, writes down this
When horizontally rotate angle, pitch rotation angleWith camera lens zoom value,For the 1st coaxially corrected
Presetting bit；
B) sets middle presetting bit, camera lens is gradually moved from most wide-angle to most focal length, is located at visual field picture keeping object of reference
On the premise of center, record successivelyHead at individual position horizontally rotates angle, pitch rotation angle
With camera lens zoom value,For coaxially correctIndividual presetting bit；
C) sets most focal length presetting bit, makes camera motion to most focal length state, adjust head horizontally rotates angle and pitching turn
Dynamic angle, and make object of reference be located at the center of visual field picture, write down now horizontally rotate angle, pitch rotation angle
DegreeWith camera lens zoom value,For coaxially correctIndividual presetting bit；
D) current position state of monitors, if the current zoom value of camera lens is, the angle that horizontally rotates of head is、
Pitch rotation angle isIf being located in presetting bitThe zoom value of both sides is respectively、,＜＜,、Corresponding head horizontally rotate angle and pitch rotation angle is respectivelyWith；
E) the movement position state of monitors, be if camera lens will move to zoom valuePosition at, be located in presetting bitThe zoom value of both sides is respectively、,＜＜,、The level of corresponding head
Rotational angle and pitch rotation angle are respectivelyWith, the head after correction horizontally rotates angle=+（-）, the head pitch rotation angle after correction=+（-）；
If f) Surveillance center's point of monitors does not change, head according to=+（-）Carry out level
Rotate, according to=+（-）Carry out pitch rotation, camera lens according toCarry out zoom, you can obtain target and be located at center
Picture, the situation at picture center is deviateed without target；
If g) Surveillance center's point of monitors changes, if moving to the water of target's center's point head by Current central point
Flat rotational angle, pitch rotation angle are respectively、；Then head according to=+（-）+Carry out level
Rotate, according to=+（-）+Carry out pitch rotation, camera lens according toCarry out zoom, you can obtain target and be located at
The picture at center, without the off-centered situation of target.
2. the coaxial antidote of the camera lens of monitor according to claim 1, it is characterised in that：Selected by step c)
Preset bits number≥10。
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| CN201410354727.XA CN104104919B (en) | 2014-07-24 | 2014-07-24 | A kind of coaxial antidote of the camera lens of monitor |
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| CN104104919B true CN104104919B (en) | 2017-09-29 |
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| CN105007411B (en) * | 2015-06-30 | 2018-01-23 | 广东欧珀移动通信有限公司 | The method and mobile terminal of a kind of distortion correction |
| CN106289182A (en) * | 2016-07-14 | 2017-01-04 | 济南中维世纪科技有限公司 | A kind of by The Cloud Terrace camera from the method for dynamic(al) correction presetting bit |
| KR102560780B1 (en) | 2016-10-05 | 2023-07-28 | 삼성전자주식회사 | Image processing system including plurality of image sensors and electronic device including thereof |
| CN111614951B (en) * | 2019-02-25 | 2022-05-13 | 浙江宇视科技有限公司 | Optical axis calibration equipment and method for integrated pan-tilt camera |
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| CN101325660A (en) * | 2007-06-13 | 2008-12-17 | 索尼株式会社 | Image pickup apparatus and method |
| CN102045548A (en) * | 2010-12-28 | 2011-05-04 | 天津市亚安科技电子有限公司 | Method for controlling automatic zoom of PTZ (pan/tilt/zoom) camera |
| CN103841333A (en) * | 2014-03-27 | 2014-06-04 | 成都动力视讯科技有限公司 | Preset bit method and control system |
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| JP5159240B2 (en) * | 2007-10-18 | 2013-03-06 | キヤノン株式会社 | Imaging device |
| TW201145992A (en) * | 2010-06-09 | 2011-12-16 | Hon Hai Prec Ind Co Ltd | PTZ camera and method for positioning objects of the PTZ camera |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325660A (en) * | 2007-06-13 | 2008-12-17 | 索尼株式会社 | Image pickup apparatus and method |
| CN102045548A (en) * | 2010-12-28 | 2011-05-04 | 天津市亚安科技电子有限公司 | Method for controlling automatic zoom of PTZ (pan/tilt/zoom) camera |
| CN103841333A (en) * | 2014-03-27 | 2014-06-04 | 成都动力视讯科技有限公司 | Preset bit method and control system |
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