CN106161968B - A kind of method of cell monitoring platform courses camera shooting - Google Patents

A kind of method of cell monitoring platform courses camera shooting Download PDF

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Publication number
CN106161968B
CN106161968B CN201610835194.6A CN201610835194A CN106161968B CN 106161968 B CN106161968 B CN 106161968B CN 201610835194 A CN201610835194 A CN 201610835194A CN 106161968 B CN106161968 B CN 106161968B
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target object
image
camera
clarity
shooting
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CN106161968A (en
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赵华
蒋明霞
邵海波
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Shanghai Xitu Information Technology Co., Ltd
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According To Open Science And Technology (shanghai) Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

The invention discloses a kind of methods for controlling the object clear image of cell monitoring camera photographic subjects, a method of control cell monitoring camera photographic subjects object clear image, including monitoring system, the monitoring system includes the camera set on the cell and the characteristic information for being stored with target object, the step of this method includes: the first image of shooting, when monitoring system searches target object image according to the characteristic information in the first image, judge the clarity of target object image, target object clear image is stored in monitoring system when clarity is more than or equal to first threshold, otherwise the first position of target object is recorded；Shoot the second image after shooting for the first image △ t1 time, monitoring system according to the characteristic information rope is to target object image in the second image is searched when, judge the clarity of target object image.The present invention can fast and effectively take target object clear image.

Description

A kind of method of cell monitoring platform courses camera shooting
Technical field
The present invention relates to the methods that a kind of control camera shooting moving object of control platform is accurately focused.
Background technique
During control platform control camera is monitored, shoots, it is sometimes desirable to continuous to the object of certain movement It is shot, but because moving object focusing is inaccurate, the photo of shooting is often very fuzzy, even if in control platform using artificial Focusing shooting, under the limitation of a variety of factors, focusing success rate is still relatively low.
Summary of the invention
To solve the above problems, the present invention provides a kind of side for controlling the object clear image of cell monitoring camera photographic subjects Method, including monitoring system, the monitoring system include the camera set on the cell and the characteristic information for being stored with target object, the party The step of method includes:
S1: the first image of shooting, monitoring system search target object figure according to the characteristic information in the first image When picture, the clarity of target object image is judged, jump to S9 when clarity is more than or equal to first threshold, otherwise record target The first position of object simultaneously enters S2；
S2: the second image is shot after the time in shooting the first image △ t1 (0s < △ t1 < 1s), monitoring system is according to institute When stating characteristic information rope is to target object image in the second image is searched, judges the clarity of target object image, work as clarity S9 is jumped to when more than or equal to first threshold, otherwise records the second position of target object and enters S3；
S3: according to the first position of target object and second position prediction in shooting the second image △ t2 (0s < △ t2 < The third place of target object when 1s) shooting third image after time, the camera of control shooting third image is at the third place Focusing；Third image is shot after shooting for the second image △ t2 time, monitoring system is according to the characteristic information in third image In when searching target object image, judge the clarity of target object image, jumped when clarity is more than or equal to first threshold Go to S9；
S9: target object clear image is stored in monitoring system.
In some embodiments of the present invention, the camera is one；
S3 further include: the first, second, and third image including shooting, the camera shoot m-1 width target object image altogether, M value is the integer more than or equal to 4, and the clarity of those target object images is both less than first threshold, according to target object In the first position of the first image, the position m-1 of the second position ... the m-1 image of the second image, the target object is established First action prediction module, prediction shooting m-1 image △ tm-1M of target object when shooting m image after the time It sets, the camera of control shooting m image is focused at the position m；Monitoring system is searched in m image according to the characteristic information When rope is to target object image, the clarity of target object image is judged, jump to S9 when clarity is greater than first threshold.
In some embodiments of the present invention, which includes n platform camera (2 >=n >=50), which also deposits The 3D model in the cell monitoring section is contained, which includes the distribution of road and camera；Wherein, by the n platform camera In first camera execute S1 and S2；Step S3 further includes S4: according to the characteristic information of the target object, cell monitoring section The first action prediction module of the target object is established in 3D model and first position and the second position；According to the of target object One action prediction module, the third place that prediction target object occurs after the △ t2 time is in magazine second phase of the n platform On first estimation range of machine, monitoring system is issued to second camera and is instructed, and second camera is after the △ t2 time to second camera The first estimation range carry out focusing shooting to obtain third image, and judge the clear of target object image in the second image Degree jumps to S9 when clarity is more than or equal to first threshold；Otherwise, S6 is entered step；
S6: setting the first estimation range of second camera is side length as the square of r (10 pixels≤r≤30 pixels), with this Point centered on the midpoint of first estimation range of two cameras, establish side length be 2r square area as second camera second Estimation range is scanned for according to the characteristic information in second estimation range, to the mesh if searching the target object Mark object carries out focusing shooting；If search is built less than the target object by the point centered on the midpoint of second estimation range Third estimation range of the square area of a length of 4r of stile as second camera, using the characteristic information stored in monitoring system It is scanned in the third estimation range of the second camera, if searching the target object, focusing bat is carried out to the target object It takes the photograph, and records the 4th position of target object；
If search less than the target object, continues to expand region of search, until side length that pth time is established be 2pr just Pth estimation range of the square region as the second camera, the edge of the pth estimation range exceed the image side of camera shooting Step S7 is jumped to when edge and still search are less than the target object；
S7: the position of second camera is searched from the 3D model in cell monitoring section in monitoring system, by remaining n-1 platform phase Machine is ranked up from the near to the distant with the distance apart from the second camera, with the collating sequence, with the characteristic information of the target object The image of those cameras shooting is successively scanned for, the target object is searched and appears in the shooting image of third camera When, judge the clarity of target object image in the image, jumps to S9 when clarity is greater than first threshold；Record third phase The third place information of target object in the image of machine shooting is simultaneously transferred to step S8；
S8: monitoring system is according to the characteristic information of the target object, the 3D model in cell monitoring section and first position, The second Motion prediction template is established in two positions, the third place and the 4th position；According to the second Motion prediction template of target object, Predict target object in t2Time appears on the first estimation range of third camera, and monitoring system refers to third camera sending It enables, third camera is in t2Time carries out focusing shooting to the first estimation range of third camera to obtain the figure of third camera shooting Picture, and judge the clarity of target object image in the image, S9 is jumped to when clarity is greater than first threshold；Otherwise, into Enter step S6.
In the method, it is first scanned for using the characteristic information of target object, it is carried out after searching out target object Focusing shooting, largely can be improved the speed of focusing, the present invention provides a kind of monitoring cameras quickly to clap in this way The method for taking the photograph specific objective object clear image.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention will be further described with reference to the examples below.
To solve the above problems, the present invention provides a kind of side for controlling the object clear image of cell monitoring camera photographic subjects Method, including monitoring system, the monitoring system include the camera set on the cell and the characteristic information for being stored with target object, the party The step of method includes:
S1: the first image of shooting, monitoring system search target object figure according to the characteristic information in the first image When picture, the clarity of target object image is judged, jump to S9 when clarity is more than or equal to first threshold, otherwise record target The first position of object simultaneously enters S2；
S2: the second image is shot after shooting the first image 0.1s, monitoring system is according to the characteristic information in the second figure When as searching middle rope to target object image, the clarity of target object image is judged, when clarity is more than or equal to first threshold S9 is jumped to, the second position of target object is otherwise recorded and enters S3；
S3: third is shot after shooting the second image 0.15s according to the first position of target object and second position prediction The camera of the third place of target object when image, control shooting third image is focused at the third place；Shooting the second figure As shooting third image after 0.15s, monitoring system searches target object image according to the characteristic information in third image When, judge the clarity of target object image, jumps to S9 when clarity is more than or equal to first threshold；
S9: target object clear image is stored in monitoring system.
In some embodiments of the present invention, the camera is one；
S3 further include: the first, second, and third image including shooting, the camera shoot 5 width target object images altogether, and The clarity of those target object images is both less than first threshold, according to target object the first image first position, second 5th position of the 5th image of the second position ... of image, establishes the first action prediction module of the target object, and prediction is being clapped 6th position of target object when shooting six images is taken the photograph after the 5th image 0.2s, and the camera of control the 6th image of shooting is the 6th It focuses at position；When monitoring system searches target object image in the 6th image according to the characteristic information, target is judged The clarity of object images jumps to S9 when clarity is greater than first threshold.
In some embodiments of the present invention, which includes 10 cameras, and it is small which is also stored with this Area monitors the 3D model in section, which includes the distribution of road and camera；Wherein, by described 10 magazine first Camera executes S1 and S2；Step S3 further includes S4: according to the 3D model in the characteristic information of the target object, cell monitoring section with And the first action prediction module of the target object is established in first position and the second position；It is pre- according to the first action of target object Survey template, the third place that occurs after the 0.15s time of prediction target object in 10 magazine second cameras the On one estimation range, monitoring system is issued to second camera and is instructed, and second camera is after 0.15s to the first prediction of second camera Region carries out focusing shooting to obtain third image, and judges the clarity of target object image in the second image, works as clarity S9 is jumped to when more than or equal to first threshold；Otherwise, S6 is entered step；
S6: setting the first estimation range of second camera is side length as the square of 15 pixels, pre- with the first of the second camera Point centered on the midpoint in region is surveyed, second estimation range of the square area as second camera that side length is 30 pixels is established, It is scanned for according to the characteristic information in second estimation range, the target object is carried out if searching the target object Focusing shooting；If search is less than the target object, by the point centered on the midpoint of second estimation range, establishing side length is 60 Third estimation range of the square area of pixel as second camera, using the characteristic information stored in monitoring system this The third estimation range of two cameras scans for, if searching the target object, carries out focusing shooting to the target object, and remember Record the 4th position of target object；
If search less than the target object, continues to expand region of search, until side length that pth time is established be 30p just Pth estimation range of the square region as the second camera, the edge of the pth estimation range exceed the image side of camera shooting Step S7 is jumped to when edge and still search are less than the target object；
S7: the position of second camera is searched from the 3D model in cell monitoring section in monitoring system, by remaining 9 cameras It is ranked up from the near to the distant with the distance apart from the second camera, with the collating sequence, with the characteristic information pair of the target object The image of those cameras shooting successively scans for, when searching the target object and appearing in the shooting image of third camera, The clarity for judging target object image in the image jumps to S9 when clarity is greater than first threshold；Record third camera The third place information of target object in the image of shooting is simultaneously transferred to step S8；
S8: monitoring system is according to the characteristic information of the target object, the 3D model in cell monitoring section and first position, The second Motion prediction template is established in two positions, the third place and the 4th position；According to the second Motion prediction template of target object, Predict target object in t2Time appears on the first estimation range of third camera, and monitoring system refers to third camera sending It enables, third camera is in t2Time carries out focusing shooting to the first estimation range of third camera to obtain the figure of third camera shooting Picture, and judge the clarity of target object image in the image, S9 is jumped to when clarity is greater than first threshold；Otherwise, into Enter step S6.
The above, the only preferred embodiment of this practical invention, cannot limit this practical invention practical range with this；It is all According to simple equivalent changes and modifications made by scope of the present invention patent and creation description, the present invention should still belong to In the range of patent covers.

Claims (1)

1. a kind of method for controlling the object clear image of cell monitoring camera photographic subjects, including a kind of monitoring system is provided, it should The step of monitoring system includes the camera set on the cell and is stored with the characteristic information of target object, this method include:
S1: the first image of shooting, when monitoring system searches target object image according to the characteristic information in the first image, The clarity for judging target object image jumps to S9 when clarity is more than or equal to first threshold, otherwise records target object First position and enter S2；
S2: the second image is shot after shooting for the first image △ t1 time, monitoring system is according to the characteristic information in the second figure When searching target object image as in, the clarity of target object image is judged, when clarity is more than or equal to first threshold S9 is jumped to, the second position of target object is otherwise recorded and enters S3；
S3: third figure is shot after shooting for the second image △ t2 time according to the first position of target object and second position prediction As when target object the third place, control shooting third image camera focus at the third place；Shooting the second image Third image is shot after the △ t2 time, monitoring system searches target object image according to the characteristic information in third image When, judge the clarity of target object image, jumps to S9 when clarity is more than or equal to first threshold；
S9: target object clear image is stored in monitoring system；
Wherein, which includes n platform camera, which is also stored with the 3D model in the cell monitoring section, the 3D Model includes the distribution of road and camera；
Wherein, S1 and S2 is executed by the magazine first camera of the n platform；
Step S3 further includes S4: according to the characteristic information of the target object, the 3D model in cell monitoring section and first position The first action prediction module of the target object is established with the second position；According to the first action prediction module of target object, in advance The third place that survey target object occurs after the △ t2 time is in the first estimation range of the magazine second camera of n platform On, monitoring system to second camera issue instruct, second camera after the △ t2 time to the first estimation range of second camera into Row focusing shooting and judge the clarity of target object image in the second image to obtain third image, when clarity greater than etc. S9 is jumped to when first threshold；Otherwise, S6 is entered step；
S6: setting the first estimation range of second camera is side length as the square of r, in the first estimation range of the second camera Point centered on point establishes second estimation range of the square area as second camera that side length is 2r, according to feature letter Breath is scanned in second estimation range, carries out focusing shooting to the target object if searching the target object；If searching Rope is less than the target object, then by the point centered on the midpoint of second estimation range, establishes the square area that side length is 4r As the third estimation range of second camera, the third using the characteristic information stored in monitoring system in the second camera is predicted Region scans for, if searching the target object, carries out focusing shooting to the target object, and record the 4th of target object the Position；
If search less than the target object, continues to expand region of search, until the secondary side length established of pth is the square of 2pr Pth estimation range of the region as the second camera, the edge of the pth estimation range exceed the image border of camera shooting simultaneously And step S7 is jumped to when still searching for less than the target object；
S7: from the 3D model in cell monitoring section in monitoring system search second camera position, by remaining n-1 platform camera with Distance apart from the second camera is ranked up from the near to the distant, with the collating sequence, with the characteristic information of the target object to this The image of a little cameras shootings successively scans for, and when searching the target object and appearing in the shooting image of third camera, sentences Break the clarity of target object image in the image, jumps to S9 when clarity is greater than first threshold；Third camera is recorded to clap The third place information for the target object in image taken the photograph simultaneously is transferred to step S8；
S8: monitoring system is according to the characteristic information of the target object, the 3D model in cell monitoring section and first position, second It sets, the third place and the 4th position establish the second Motion prediction template；According to the second Motion prediction template of target object, prediction Target object is in t2Time appears on the first estimation range of third camera, and monitoring system is issued to third camera and instructed, the Three cameras are in t2Time carries out focusing shooting to the first estimation range of third camera to obtain the image of third camera shooting, and The clarity for judging target object image in the image jumps to S9 when clarity is greater than first threshold；Otherwise, it enters step S6。
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CN103795909A (en) * 2012-10-29 2014-05-14 株式会社日立制作所 Shooting optimization device, image-pickup device and shooting optimization method

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