CN104104919A - Lens coaxial correction method of monitor - Google Patents
Lens coaxial correction method of monitor Download PDFInfo
- Publication number
- CN104104919A CN104104919A CN201410354727.XA CN201410354727A CN104104919A CN 104104919 A CN104104919 A CN 104104919A CN 201410354727 A CN201410354727 A CN 201410354727A CN 104104919 A CN104104919 A CN 104104919A
- Authority
- CN
- China
- Prior art keywords
- camera lens
- angle
- cloud terrace
- monitor
- pitch rotation
- 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.)
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- Closed-Circuit Television Systems (AREA)
- Studio Devices (AREA)
- Lens Barrels (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The coaxial antidote of the camera lens of monitor of the invention, the monitor include holder, camera lens, video camera, are characterized in that, coaxial antidote includes: a) setting most wide-angle presetting bit; B) intermediate presetting bit is set; C) most focal length presetting bit is set; D) current position state of monitor; E) the movement position state of monitor; F) as central point there is no variation, according to
=
+ (
-
),
=
+ (
-
), corrected; G) as central point changes, according to
=
+ (
-
)+
,
=
+ (
-
)+
,
It is corrected. The coaxial antidote of camera lens of the invention, utilize current location and the presetting bit data that move to position two sides, the deviation of camera lens optical axis is corrected in realization, and monitoring objective can be made to be in monitored picture center always, avoids the phenomenon that picture centre deviates after previous zoom.
Description
Technical field
The present invention relates to a kind of coaxial antidote of camera lens of monitor, in particular, relate in particular to a kind of coaxial antidote of camera lens of avoiding monitor Surveillance center's point being impacted due to the alignment of camera lens.
Background technology
Along with further developing of security and guard technology, intelligent, unattended operation feature becomes one of trend of surveillance development, monitor is as headend equipment, in surveillance, play a part very important, need to coordinate with daemon software the function that realizes more intellectualities, automation, event detection, frame choosing amplification just belong to one of this type of function.The camera lens of monitor is conventionally in wide-angle, and in the time having abnormal generation in discovery visual field, monitor amplifies demonstration between two parties to abnormity point automatically; but because the alignment of telephoto lens is poor; while moving long burnt direction to from wide-angle, target can depart from display screen center conventionally, even can deflect away from display screen.
As shown in the Fig. 1 in Figure of description, when camera lens in zoom value is
position time, the optical axis of camera lens is along middle solid line direction; And the zoom value of working as camera lens is
time, its optical axis just may be consistent with the dotted line direction of top, when the zoom value of camera lens is
time, its optical axis is likely consistent with the dashdotted direction of below again.In the time that the visual field of monitor changes, if come target localization according to the thick-and-thin principle of the optical axis of camera lens, very easily cause actual acquisition picture and desirable picture there are differences.As shown in Figure 2, be the guarded region of current reality in solid-line rectangle frame, present if rectangle dotted line frame favored area is monitored, under perfect condition, should obtain monitoring image as shown in Figure 3, but because the alignment of camera lens is poor, the actual image obtaining likely as shown in Figure 4.Correct as the alignment to camera lens not, may make to detect that target departs from Surveillance center or not in monitoring range.
If can to camera lens from wide-angle to long burnt state, zoom is worth corresponding camera lens axis corrects, and can effectively avoid the depart from objectives phenomenon in region of monitored picture.If but survey and draw camera lens axial location corresponding to each zoom value (camera lens axial location by The Cloud Terrace horizontally rotate angle and pitch rotation angle embodies), very large workload (16384 groups of data need to be surveyed and drawn by for example Sony) be can bring, great development of manpower cost and computational complexity brought.
Summary of the invention
The present invention, in order to overcome the shortcoming of above-mentioned technical problem, provides a kind of coaxial antidote of camera lens of monitor.
The coaxial antidote of camera lens of monitor of the present invention, described monitor comprises The Cloud Terrace, camera lens, video camera, and video camera is obtained the image in visual field by camera lens, and camera lens can carry out zoom action, and The Cloud Terrace can order about video camera and carry out level, elevating movement; Its special feature is, the coaxial antidote of described camera lens is realized by following steps: a). most wide-angle presetting bit is set, make camera motion to most wide-angle position, choose a certain scenery in visual field as object of reference, what regulate The Cloud Terrace horizontally rotates angle and pitch rotation angle, make object of reference be positioned at the center of visual field picture, write down now horizontally rotate angle
, pitch rotation angle
With camera lens zoom value
,
For coaxial 1st presetting bit of correcting; B). presetting bit in the middle of arranging, makes camera lens be moved to most focal length gradually by most wide-angle, is keeping object of reference to be positioned under the prerequisite of picture center, visual field,Record successively
The The Cloud Terrace of individual position horizontally rotate angle
, pitch rotation angle
With camera lens zoom value
,
For coaxial correct the
Individual presetting bit; C). most focal length presetting bit is set, makes camera motion to most focal length state,What regulate The Cloud Terrace horizontally rotates angle and pitch rotation angle, and makes object of reference be positioned at the center of visual field picture, write down now horizontally rotate angle
, pitch rotation angle
With camera lens zoom value
,
For coaxial correct the
Individual presetting bit; D). the current position state of monitor,If the current zoom value of camera lens is
, the angle that horizontally rotates of The Cloud Terrace is
, pitch rotation angle is
, establish in presetting bit and be positioned at
The zoom value of both sides is respectively
,
,
<
<
,
,
Corresponding The Cloud Terrace horizontally rotate angle and pitch rotation angle is respectively
With
; E). the movement position state of monitor, establish camera lens and zoom value will be moved to be
Position, in presetting bit, be positioned at
The zoom value of both sides is respectively
,
,
<
<
,
,
Corresponding The Cloud Terrace horizontally rotate angle and pitch rotation angle is respectively
With
,The Cloud Terrace after rectification horizontally rotates angle
=
+ (
-
), the The Cloud Terrace pitch rotation angle after rectification
=
+ (
-
); If f). Surveillance center's point of monitor does not change, then The Cloud Terrace according to
=
+ (
-
) horizontally rotate,According to
=
+ (
-
) carry out pitch rotation, camera lens according to
Carry out zoom, target can be obtained be positioned at the picture at center, and there will not be target to depart from the situation at picture center; If g). Surveillance center's point of monitor changes, establish by Current central point move to target's center put The Cloud Terrace horizontally rotate angle, pitch rotation angle is respectively
,
; Then The Cloud Terrace according to
=
+ (
-
)+
Horizontally rotate,According to
=
+ (
-
)+
Carry out pitch rotation, camera lens according to
Carry out zoom, target can be obtained be positioned at the picture at center, and there will not be the off-centered situation of target.
The coaxial antidote of camera lens of monitor of the present invention, step c) in selected presetting bit number
>=10.
The invention has the beneficial effects as follows: the coaxial antidote of camera lens of the present invention, camera lens to the longest burnt process changing, remains that the object of reference of choosing is positioned at the center of picture by wide-angle, gathers
group horizontally rotates angle by The Cloud Terrace
, pitch rotation angle
with camera lens zoom value
the presetting bit data of composition, in the process of monitor zoom, utilize current location and the presetting bit data that will move to both sides, position, realization was corrected departing from of camera lens optical axis, can make the monitoring objective all the time in monitored picture center, avoid the phenomenon that picture centre departs from after zoom in the past.
If front and back Surveillance center does not change, The Cloud Terrace according to
=
+ (
-
) horizontally rotate, according to
=
+ (
-
) pitch rotation realizes the rectification of camera lens optical axis; If Surveillance center's point changes, The Cloud Terrace according to
=
+ (
-
)+
horizontally rotate, according to
=
+ (
-
)+
pitch rotation realizes the rectification of camera lens optical axis,
,
decibel horizontally rotates angle, pitch rotation angle for what moved to target's center's point The Cloud Terrace by current central point.
Brief description of the drawings
Fig. 1 has provided the not schematic diagram on same straight line of optical axis of camera lens under different zoom values;
Fig. 2 has provided current monitored picture and has waited to want the schematic diagram of guarded region;
Fig. 3 has provided the image obtaining when camera lens optical axis is ideal line;
Fig. 4 is the image of the actual area to be monitored obtaining.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, for telephoto lens, camera lens is in the time of different zooms position, and its optical axis may not be located on the same line, and the alignment of telephoto lens is poor.Because the alignment of telephoto lens is poor, dotted line frame favored area in to Fig. 2 in monitored picture is amplified in the process of monitoring, obtain desirable picture as shown in Figure 3, but the target that in fact can obtain as shown in Figure 4 departs from the picture of central area, What is more, and target may be in monitored picture.
The coaxial antidote of camera lens of monitor of the present invention, described monitor comprises The Cloud Terrace, camera lens, video camera, and video camera obtains the image in visual field by camera lens, and camera lens can carry out zoom action, and The Cloud Terrace can order about video camera and carry out level, elevating movement; The coaxial antidote of described camera lens is realized by following steps:
A). wide-angle presetting bit is set, make camera motion to wide-angle position, choose a certain scenery in visual field as object of reference, what regulate The Cloud Terrace horizontally rotates angle and pitch rotation angle, make object of reference be positioned at the center of visual field picture, write down the angle that horizontally rotates now
, pitch rotation angle
with camera lens zoom value
,
for coaxial the 1st presetting bit of correcting;
B). presetting bit in the middle of arranging, make camera lens by wide-angle gradually to the longest burnt motion, keeping object of reference to be positioned under the prerequisite of picture center, visual field, record successively
the The Cloud Terrace of individual position horizontally rotate angle
, pitch rotation angle
with camera lens zoom value
,
for coaxial correct the
individual presetting bit;
C). the longest burnt presetting bit is set, makes camera motion to the longest burnt state, what regulate The Cloud Terrace horizontally rotates angle and pitch rotation angle, and makes object of reference be positioned at the center of visual field picture, writes down the angle that horizontally rotates now
, pitch rotation angle
with camera lens zoom value
,
for coaxial correct the
individual presetting bit;
value is larger, and it is more accurate that the alignment of camera lens optical axis is corrected, but also should not get excessive, be generally advisable to be greater than 10.
D). the current position state of monitor, establish the current zoom value of camera lens and be
, the angle that horizontally rotates of The Cloud Terrace is
, pitch rotation angle is
, establish in presetting bit and be positioned at
the zoom value of both sides is respectively
,
,
<
<
,
,
corresponding The Cloud Terrace horizontally rotate angle and pitch rotation angle is respectively
with
;
E). the movement position state of monitor, establish camera lens and will move to zoom value and be
position, in presetting bit, be positioned at
the zoom value of both sides is respectively
,
,
<
<
,
,
corresponding The Cloud Terrace horizontally rotate angle and pitch rotation angle is respectively
with
, the The Cloud Terrace after rectification horizontally rotates angle
=
+ (
-
), the The Cloud Terrace pitch rotation angle after rectification
=
+ (
-
);
If f). Surveillance center's point of monitor does not change, The Cloud Terrace according to
=
+ (
-
) horizontally rotate, according to
=
+ (
-
) carry out pitch rotation, camera lens according to
carry out zoom, can obtain target and be positioned at the picture at center, and there will not be target to depart from the situation at picture center;
If g). Surveillance center's point of monitor changes, establish by current central point move to target's center's point The Cloud Terrace horizontally rotate angle, pitch rotation angle is respectively
,
; The Cloud Terrace according to
=
+ (
-
)+
horizontally rotate, according to
=
+ (
-
)+
carry out pitch rotation, camera lens according to
carry out zoom, can obtain target and be positioned at the picture at center, and there will not be the off-centered situation of target.
Claims (2)
1. the coaxial antidote of the camera lens of monitor, described monitor comprises The Cloud Terrace, camera lens, video camera, and video camera obtains the image in visual field by camera lens, and camera lens can carry out zoom action, and The Cloud Terrace can order about video camera and carry out level, elevating movement; It is characterized in that, the coaxial antidote of described camera lens is realized by following steps:
A). wide-angle presetting bit is set, make camera motion to wide-angle position, choose a certain scenery in visual field as object of reference, what regulate The Cloud Terrace horizontally rotates angle and pitch rotation angle, make object of reference be positioned at the center of visual field picture, write down the angle that horizontally rotates now
, pitch rotation angle
with camera lens zoom value
,
for coaxial the 1st presetting bit of correcting;
B). presetting bit in the middle of arranging, make camera lens by wide-angle gradually to the longest burnt motion, keeping object of reference to be positioned under the prerequisite of picture center, visual field, record successively
the The Cloud Terrace of individual position horizontally rotate angle
, pitch rotation angle
with camera lens zoom value
,
for coaxial correct the
individual presetting bit;
C). the longest burnt presetting bit is set, makes camera motion to the longest burnt state, what regulate The Cloud Terrace horizontally rotates angle and pitch rotation angle, and makes object of reference be positioned at the center of visual field picture, writes down the angle that horizontally rotates now
, pitch rotation angle
with camera lens zoom value
,
for coaxial correct the
individual presetting bit;
D). the current position state of monitor, establish the current zoom value of camera lens and be
, the angle that horizontally rotates of The Cloud Terrace is
, pitch rotation angle is
, establish in presetting bit and be positioned at
the zoom value of both sides is respectively
,
,
<
<
,
,
corresponding The Cloud Terrace horizontally rotate angle and pitch rotation angle is respectively
with
;
E). the movement position state of monitor, establish camera lens and will move to zoom value and be
position, in presetting bit, be positioned at
the zoom value of both sides is respectively
,
,
<
<
,
,
corresponding The Cloud Terrace horizontally rotate angle and pitch rotation angle is respectively
with
, the The Cloud Terrace after rectification horizontally rotates angle
=
+ (
-
), the The Cloud Terrace pitch rotation angle after rectification
=
+ (
-
);
If f). Surveillance center's point of monitor does not change, The Cloud Terrace according to
=
+ (
-
) horizontally rotate, according to
=
+ (
-
) carry out pitch rotation, camera lens according to
carry out zoom, can obtain target and be positioned at the picture at center, and there will not be target to depart from the situation at picture center;
If g). Surveillance center's point of monitor changes, establish by current central point move to target's center's point The Cloud Terrace horizontally rotate angle, pitch rotation angle is respectively
,
; The Cloud Terrace according to
=
+ (
-
)+
horizontally rotate, according to
=
+ (
-
)+
carry out pitch rotation, camera lens according to
carry out zoom, can obtain target and be positioned at the picture at center, and there will not be the off-centered situation of target.
2. the coaxial antidote of the camera lens of monitor according to claim 1, is characterized in that: step c) in selected presetting bit number
>=10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354727.XA CN104104919B (en) | 2014-07-24 | 2014-07-24 | A kind of coaxial antidote of the camera lens of monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354727.XA CN104104919B (en) | 2014-07-24 | 2014-07-24 | A kind of coaxial antidote of the camera lens of monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104104919A true CN104104919A (en) | 2014-10-15 |
| CN104104919B CN104104919B (en) | 2017-09-29 |
Family
ID=51672684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410354727.XA Active CN104104919B (en) | 2014-07-24 | 2014-07-24 | A kind of coaxial antidote of the camera lens of monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104104919B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007411A (en) * | 2015-06-30 | 2015-10-28 | 广东欧珀移动通信有限公司 | Distortion correction method and mobile terminal |
| 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 |
| CN107920199A (en) * | 2016-10-05 | 2018-04-17 | 三星电子株式会社 | Image processing system and the electronic device for including described image processing system |
| CN111614951A (en) * | 2019-02-25 | 2020-09-01 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105007411A (en) * | 2015-06-30 | 2015-10-28 | 广东欧珀移动通信有限公司 | Distortion correction method and mobile terminal |
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| CN111614951A (en) * | 2019-02-25 | 2020-09-01 | 浙江宇视科技有限公司 | Optical axis calibration equipment and method for integrated pan-tilt camera |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104104919B (en) | 2017-09-29 |
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