CN104112283A - Quick direction finding system and method of moving object for general aviation video surveillance - Google Patents
Quick direction finding system and method of moving object for general aviation video surveillance Download PDFInfo
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- CN104112283A CN104112283A CN201410367883.XA CN201410367883A CN104112283A CN 104112283 A CN104112283 A CN 104112283A CN 201410367883 A CN201410367883 A CN 201410367883A CN 104112283 A CN104112283 A CN 104112283A
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Abstract
The invention discloses a quick direction finding method of a moving object for general aviation video surveillance. The method includes capturing and recording video frames; decomposing the video frame into image frames of different resolution; setting a determining threshold valve; setting every image frame from the image frame of the lowest resolution as a current image frame sequentially and performing the processing and determination to obtain determination results. The invention also discloses a quick direction finding system of the moving object for general aviation video surveillance. The system comprises an image capturing and recording unit, an image decomposition unit, a moving object detection unit, and a direction-finding determination unit and a direction synthesis unit. The system and the method solve the problem of quick direction finding of the moving object for general aviation video surveillance, achieve quick detection of the direction of the object captured by a camera, create reasonable conditions for the subsequent object positioning and analysis function in a monitoring system, and further provide a solid foundation for improving the positioning accuracy.
Description
Technical field
The present invention relates to General Aviation targeted surveillance field, be specifically related to a kind of Quick Measuring of the moving-target towards General Aviation video monitor to system and method.
Background technology
In General Aviation field, target flight range is wide, but flying height is low.Traditional Radar Technology monitors that in navigation in application, cost is too expensive.Video technique is similar with Radar Technology in a lot of characteristics, but video technique is more general and cheap.Therefore, video technique is improved and can be applied to navigation supervision, the particularly supervision of low latitude and scene target.And in surveillance, to the fast processing of target, be to realize an important requirement of system real time.In order to realize the fast processing to target, need in treatment scheme and method, break through, thereby reach the object of " saving time ", for creating rational condition with analytic function in succeeding target location in surveillance.
Summary of the invention
The quick direction-finding method that the object of this invention is to provide a kind of moving-target towards General Aviation video monitor, can realize the fast detecting of the moving-target direction that camera is caught, for creating rational condition with analytic function in succeeding target location in surveillance.
For achieving the above object, the technical solution used in the present invention is:
The method comprises: catch and recording of video frame; Frame of video is resolved into the picture frame of different resolution; Set decision gate limit value; And from the minimum described picture frame of resolution, successively picture frame be made as to current image frame and process judgement, obtain judged result.
The present invention also provides a kind of quick direction-finding system of the moving-target towards General Aviation video monitor, comprising: image capture, record cell, for catching and receiver, video image information; Picture breakdown unit, for decomposing single frames video image; Moving-target detecting unit, for moving-target is detected, obtains testing result; Direction finding identifying unit, for differentiating testing result reliability; And direction synthesis unit, for the synthesis of the direction of described moving-target.
The beneficial effect that the method disclosed in the present and system produce is:
Solved in navigation video monitor, to moving-target carry out Quick Measuring to problem, realize the fast detecting to camera target acquisition direction, for succeeding target location in surveillance and analytic function are created rational condition, thereby provide solid foundation for the raising of positioning precision.This method and system can save manpower and time greatly simultaneously.
Accompanying drawing explanation
Figure 1 shows that the process flow diagram of an embodiment of the quick direction-finding method of a kind of moving-target towards General Aviation video monitor of the present invention.
Figure 2 shows that of the present inventionly from the minimum described picture frame of resolution, successively picture frame be made as to current image frame and process judgement, obtain the process flow diagram of an embodiment of judged result step.
Figure 3 shows that the schematic diagram of an embodiment of the quick direction-finding system of a kind of moving-target towards General Aviation video monitor of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and corresponding accompanying drawing, technical solution of the present invention is clearly and completely described.
With reference to figure 1, Figure 1 shows that the process flow diagram of an embodiment 100 of the quick direction-finding method of a kind of moving-target towards General Aviation video monitor of the present invention.Embodiment 100 comprises the steps 101 to 104.
In step 101, capturing video frame, records and preserves the original video image of each frame.
In step 102, frame of video is resolved into the picture frame of different resolution.
In one embodiment of the invention, can utilize video image resolving cell, according to pyramid model, original image is decomposed into the image that several resolution are different.
In step 103, set decision gate limit value.
In one embodiment of the invention, decision gate limit value can produce configuration file in advance according to the feature of different target, and running configuration file produces different threshold values.
In step 104, from the minimum described picture frame of resolution, successively picture frame be made as to current image frame and process judgement, obtain judged result.
In one embodiment of the invention, step 104 may further include following steps 201 to 204.
With reference to figure 2, Figure 2 shows that of the present inventionly from the minimum described picture frame of resolution, successively picture frame be made as to current image frame and process judgement, obtain the process flow diagram of an embodiment of judged result step.
In step 201, current image frame and background frames are carried out to computing.
In one embodiment of the invention, in order to realize fast detecting, can carry out calculus of differences to current image frame and background frames, by method of difference, detect moving target and the shared number of pixels of target.
In step 202, judge whether the number of pixels changing in current image frame is greater than decision gate limit value.When if the number of pixels changing in current image frame is greater than described decision gate limit value, think and detect target, stop detecting, proceed to step 203; If the number of pixels changing in current image frame is not more than described decision gate limit value, proceed to step 204; When number of pixels is 0, think and there is no target, stop testing process.
In step 203, the pixel changing is relied on to the direction table travel direction conversion of configured in advance, obtain direction finding result.
In one embodiment of the invention, can calculate target barycenter according to the pixel changing, and by the synthetic described target direction of direction conversion table of different resolution image respective pixel.
In step 204, judge whether current image frame is ultimate resolution picture frame; If current image frame is not ultimate resolution picture frame, it is new current image frame that the picture frame that resolution is larger than current image frame is set, and to new current image frame repeating step 104, obtains judged result; If current image frame has been ultimate resolution picture frame, judgement does not detect moving-target.
With reference to figure 3, Figure 3 shows that the schematic diagram of an embodiment of the quick direction-finding system 300 of a kind of moving-target towards General Aviation video monitor of the present invention.In Fig. 3, the quick direction-finding system of a kind of moving-target towards General Aviation video monitor of the present invention can comprise image capture, record cell 301, for catching and receiver, video image information; Picture breakdown unit 302, for decomposing single frames video image; Moving-target detecting unit 303, for moving-target is detected, obtains testing result; Direction finding identifying unit 304, for differentiating testing result reliability; And direction synthesis unit 305, for the synthesis of the direction of moving-target.
In one embodiment of the invention, image capture, record cell 301 successively connection layout as resolving cell 302, moving-target detecting unit 303, direction finding identifying unit 304 and direction synthesis unit 305.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (7)
1. towards a quick direction-finding method for the moving-target of General Aviation video monitor, it is characterized in that, comprising:
Catch and recording of video frame;
Described frame of video is resolved into the picture frame of different resolution;
Set decision gate limit value; And
From the minimum described picture frame of resolution, successively described picture frame is made as to current image frame and processes judgement, obtain judged result.
2. method according to claim 1, is characterized in that, describedly from the minimum picture frame of resolution, successively picture frame is processed to judgement, and the step that obtains judged result further comprises:
Described current image frame and background frames are carried out to computing;
Judge whether the number of pixels changing in described current image frame is greater than described decision gate limit value;
If the number of pixels changing in described current image frame is greater than described decision gate limit value, the pixel changing is relied on the direction table travel direction conversion of configured in advance, obtain direction finding result; And
If the number of pixels changing in described current image frame is not more than described decision gate limit value, judge whether current image frame is ultimate resolution picture frame; If described current image frame is not ultimate resolution picture frame, it is new current image frame that the picture frame that resolution is larger than described current image frame is set, and to described new current image frame repeating step 104, obtains judged result; If described current image frame is ultimate resolution picture frame, judgement does not detect moving-target.
3. method according to claim 1 and 2, is characterized in that, it is according to gaussian pyramid model, described frame of video to be resolved into the picture frame of different resolution that described frame of video is resolved into the method that the picture frame step of different resolution adopts.
4. method according to claim 2, is characterized in that, described current image frame and background frames is carried out to the method that calculation step adopts be: described current image frame and background frames are carried out to calculus of differences.
5. method according to claim 2, it is characterized in that, if the number of pixels changing in described current image frame is greater than described decision gate limit value, the pixel changing is relied on the direction table travel direction conversion of configured in advance, the step that obtains direction finding result further comprises:
According to the pixel of described variation, calculate target barycenter; And
By the synthetic described target direction of direction conversion table of different resolution image respective pixel.
6. towards a quick direction-finding system for the moving-target of General Aviation video monitor, it is characterized in that, comprising:
Image capture, record cell, for catching and receiver, video image information;
Picture breakdown unit, for decomposing video image described in single frames;
Moving-target detecting unit, for moving-target is detected, obtains testing result;
Direction finding identifying unit, for differentiating described testing result reliability; And
Direction synthesis unit, for the synthesis of the direction of described moving-target.
7. system according to claim 6, is characterized in that, described image capture, record cell connect described picture breakdown unit, moving-target detecting unit, direction finding identifying unit and direction synthesis unit successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410367883.XA CN104112283A (en) | 2014-07-30 | 2014-07-30 | Quick direction finding system and method of moving object for general aviation video surveillance |
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| CN201410367883.XA CN104112283A (en) | 2014-07-30 | 2014-07-30 | Quick direction finding system and method of moving object for general aviation video surveillance |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0627696A2 (en) * | 1993-06-03 | 1994-12-07 | Matsushita Electric Industrial Co., Ltd. | Image motion vector detection apparatus |
| CN1185698A (en) * | 1996-10-31 | 1998-06-24 | 山武·霍尼韦尔公司 | Motion direction measuring equipment and tracing equipment |
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2014
- 2014-07-30 CN CN201410367883.XA patent/CN104112283A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0627696A2 (en) * | 1993-06-03 | 1994-12-07 | Matsushita Electric Industrial Co., Ltd. | Image motion vector detection apparatus |
| CN1185698A (en) * | 1996-10-31 | 1998-06-24 | 山武·霍尼韦尔公司 | Motion direction measuring equipment and tracing equipment |
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| NIYOGI S等: "《Analyzing and recognizing walking figures in XYT》", 《PROC IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION》 * |
| 徐姗姗: "《基于运动目标分析的智能监控系统》", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
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Application publication date: 20141022 |