CN101110905A - Camera vibration discerning device and method for digital video recorder - Google Patents
Camera vibration discerning device and method for digital video recorder Download PDFInfo
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- CN101110905A CN101110905A CNA2006100290616A CN200610029061A CN101110905A CN 101110905 A CN101110905 A CN 101110905A CN A2006100290616 A CNA2006100290616 A CN A2006100290616A CN 200610029061 A CN200610029061 A CN 200610029061A CN 101110905 A CN101110905 A CN 101110905A
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Abstract
The present invention relates to a discriminating device and the method for the camera shaking of a digital video recorder. The direction and size of a plurality of motion vectors are detected directly towards to the camera video received from a monitoring camera fixedly arranged in a specific area for shooting the relative area, at the same time, after the above pluralities of motion vectors are detected as in the same direction or size, if the direction or the size is detected to be different from the previous motion vectors in a specific time, the camera is distinguished to be shaken, thereby, the shaking of the monitoring camera can be effectively distinguished only by utilized the motion vector, no extra shaking detecting sensor is needed, and a relative measurement can be taken rapidly.
Description
Technical field
The present invention relates to a kind of camera vibration discerning device and method of digital video recorder, refer in particular to and to utilize motion vector (Motion Vector) to distinguish to be fixed on particular place to be used to take a kind of camera vibration discerning device and the method for digital video recorder of vibrations of the camera for monitoring of relevant range.
Background technology
Usually, camera for monitoring is fixed on above ceiling of particular place etc., is used to take the relevant range.For example, as shown in Figure 1, above-mentioned camera for monitoring 100 is taken the irradiated object of relevant range, outputs on the remote digital video recorder (DVR) 200.
And above-mentioned digital video recorder 200 shows by the taken supervision image of above-mentioned camera for monitoring by the output of monitor (Monitor) picture, meanwhile its record is stored on the hard disk set in the device (HDD) etc.
Therefore, the manager can watch on one side by the shown video camera image of above-mentioned monitor picture, stored video camera image in the above-mentioned hard disk perhaps can be play in the real time monitoring relevant range on one side, monitors the emergency of the relevant range that takes place before confirming.
But, when above-mentioned camera for monitoring produces vibrations, the effractor who for example trespasses the relevant range is for removing camera for monitoring, perhaps take direction towards any different directions change, and camera for monitoring is applied when vibrations, can have such problem: the manager perhaps must watch video camera image shown on the monitor picture with breathless interest for distinguishing this situation at a distance, perhaps extra vibration detection sensor etc. must be installed on camera for monitoring.
Summary of the invention
The present invention proposes for addressing the above problem just, purpose is to provide a kind of camera vibration discerning device and method of digital video recorder, promptly refer to: digital video recorder is at the video camera image that receives from camera for monitoring, detect direction or the size of a plurality of motion vectors (Motion Vector), meanwhile after above-mentioned a plurality of motion vectors are detected as same direction or size, if with interior detection be and former different same direction or sizes at the appointed time, be characterized as camera vibration, thereby need not to use extra vibration detection sensor, also can distinguish a kind of camera vibration discerning device and the method for digital video recorder of the vibrations of camera for monitoring effectively.
To achieve these goals, the camera vibration discerning method of digital video recorder of the present invention is characterised in that it comprises following two steps: the 1st step, the direction or the size of a plurality of motion vectors of detection video camera image; The 2nd step after above-mentioned a plurality of motion vectors are detected as same direction or size, if be detected as and former different same direction or sizes with interior at the appointed time, is distinguished camera vibration.
In addition, to achieve these goals, the camera vibration discerning device of digital video recorder of the present invention is characterised in that it comprises following three parts: be used to detect the direction of a plurality of motion vectors of video camera image or the motion vector detection of size; After above-mentioned a plurality of motion vectors are detected as same direction or size,, be characterized as the microprocessor of camera vibration if be detected as and former different same direction or sizes with interior at the appointed time; When being characterized as above-mentioned camera vibration, be used for generating the alarm generator of corresponding therewith warning message (message) of output or warning tones.
Effect of the present invention:
In sum, camera vibration discerning device and method with the digital video recorder of the present invention that as above constitutes are very valuable inventions, its effect is: for example, at being used for taking the video camera image that the camera for monitoring of relevant range receives from being fixedly installed to particular place, detect direction or the size of a plurality of motion vectors (Motion Vector), meanwhile after above-mentioned a plurality of motion vectors are detected as same direction or size, if be detected as and former different same direction or sizes with interior at the appointed time, then be characterized as camera vibration, thereby need not to use extra vibration detection sensor, only utilize motion vector just can distinguish the vibrations of camera for monitoring effectively, carry out relative measures therewith rapidly.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
Description of drawings
Fig. 1 is common camera for monitoring and digital video recorder connection status schematic diagram;
Fig. 2 is the camera vibration discerning device pie graph of digital video recorder of the present invention;
Fig. 3 is the embodiment schematic diagram of the camera vibration discerning process of digital video recorder of the present invention;
Fig. 4 is the operational flowchart of the camera vibration discerning method of digital video recorder of the present invention.
The symbol description of major part in the accompanying drawing:
100: camera for monitoring 200: digital video recorder
20:A/D converter 21: Digital Signal Processing portion
22: motion vector detection 23: microprocessor
24: memory 25: timer
26: alarm generator
Embodiment
With reference to the accompanying drawings the camera vibration discerning device of digital video recorder of the present invention and the embodiment of method are elaborated.
Fig. 2 is the formation schematic diagram of the camera vibration discerning device of digital video recorder of the present invention.For example, above-mentioned digital video recorder 200 can comprise: A/D converter 20, Digital Signal Processing portion (DSP) 21, motion vector detection 22, microprocessor 23, memory 24, timer 25, alarm generator 26 etc.
Simultaneously, above-mentioned A/D converter 20 can carry out the A/D conversion to the analog video signal that receives from camera for monitoring, the output digital video signal; Above-mentioned Digital Signal Processing portion 21 then can carry out Digital Signal Processing to above-mentioned digital video signal, outputs on the monitor that is connected with digital video recorder etc., and then or the video camera image is presented on the monitor, perhaps record is stored on the hard disk etc.
In addition, above-mentioned motion vector detection 22 detects the motion vector direction (Direction) and the size (Size) of a plurality of pixels (Pixel Point) in the video camera image respectively as shown in Figure 3, outputs on the microprocessor 23; And the direction of 23 pairs of above-mentioned motion vectors of above-mentioned microprocessor or size compare affirmation, for example when the direction of a plurality of motion vectors or big or small when different, are characterized as common irradiated object and are moving.
On the contrary, after above-mentioned a plurality of motion vectors are detected as same direction or size, if be detected as and former different same direction or sizes with interior at the appointed time, above-mentioned microprocessor 23 is characterized as camera for monitoring has been applied vibrations, perhaps control the operation of above-mentioned alarm generator 26 grades, the output warning tones is perhaps by warnings such as monitor pictures.To be elaborated to this below.
Fig. 4 is the operational flowchart of the camera vibration discerning method of digital video recorder of the present invention.As mentioned above, if receive analog video signal from being fixed on the camera for monitoring that particular place is used for taking the relevant range, 20 in above-mentioned A/V converter carries out the A/D conversion, the output digital video signal to this analog video signal.
S10, the digital video signal of 21 pairs of above-mentioned A/V conversion of process of above-mentioned Digital Signal Processing portion carries out Digital Signal Processing, outputs on monitor of being connected with digital video recorder etc.At this moment, the direction or the size of the motion vector of a plurality of pixels (pixel point) of having set in the video camera image of above-mentioned motion vector detection 22 difference test example as 1 frame (Frame).
S11, in addition, 23 pairs of direction or sizes by each motion vector that above-mentioned motion vector detection 22 detected and exported of above-mentioned microprocessor compare affirmation, if whether each motion vector is same direction or size.
S14 if do not have same direction or size, then is characterized as common irradiated object and moves.
S12, otherwise, if each motion vector has same direction or size, judge whether to exceed schedule time, if exceed schedule time, enter S14, be characterized as common irradiated object and move.
Whether S13 if at the appointed time, confirms to detect and in the past different same directions or big or small motion vector.
For example, though a plurality of motion vectors by output that above-mentioned motion vector detection detects have same direction or size, but above-mentioned microprocessor 23 detect with before before the motion vector of different same direction or size, if exceed schedule time, then enter S14, be characterized as common irradiated object and move.
And, though a plurality of motion vectors by output that above-mentioned motion vector detection detects have same direction or size, if but above-mentioned microprocessor 23 does not detect and in the past different same directions or big or small motion vector with interior at the appointed time, then enter S14, be characterized as common irradiated object and move S14.
S15, S16, on the contrary, when a plurality of motion vectors by output that above-mentioned motion vector detection detects have same direction or size, and during at the appointed time with the interior motion vector that detects with in the past different same directions or size, then be characterized as the camera for monitoring vibrations, control the operation of above-mentioned alarm generator 26, perhaps export warning tones, perhaps warning message output is presented on the monitor picture.
S17, therefore, the manager can take and produce camera for monitoring rapidly and shake corresponding a series of measure, and afterwards, above-mentioned microprocessor 23 is carried out any associative operation that above-mentioned manager applied for.
More than just for example understand embodiments of the invention, be applicable to camera for monitoring with pan/inclination/zoom function so the present invention can enlarge.But, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.
Claims (6)
1. the camera vibration discerning method of a digital video recorder is characterized in that comprising following two steps:
The 1st step, the direction or the size of a plurality of motion vectors of detection video camera image;
The 2nd step after above-mentioned a plurality of motion vectors are detected as same direction or size, if be detected as and former different same direction or sizes with interior at the appointed time, then is characterized as camera vibration.
2. the camera vibration discerning method of digital video recorder as claimed in claim 1 is characterized in that also comprising:
When being characterized as above-mentioned camera vibration, the step of output warning message or warning tones.
3. the camera vibration discerning device of digital video recorder as claimed in claim 1 and method is characterized in that also comprising:
If the afore mentioned rules time with interior be not detected as with before different same direction or sizes, distinguish the step that irradiated object moves.
4. the camera vibration discerning device of a digital video recorder is characterized in that comprising following three parts:
Be used to detect the direction of a plurality of motion vectors of video camera image or the motion vector detection of size;
After above-mentioned a plurality of motion vectors are detected as same direction or size,, then be characterized as the microprocessor of camera vibration if be detected as and former different same direction or sizes with interior at the appointed time;
When being characterized as above-mentioned camera vibration, generate the alarm generator of corresponding therewith warning message of output or warning tones.
5. the camera vibration discerning device of digital video recorder as claimed in claim 4 is characterized in that:
If above-mentioned microprocessor the afore mentioned rules time with interior be detected as with before different same direction or sizes, then be characterized as irradiated object and move.
6. the camera vibration discerning device of digital video recorder as claimed in claim 4 is characterized in that:
Above-mentioned video camera is meant the camera for monitoring that is fixedly installed to particular place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100290616A CN101110905A (en) | 2006-07-18 | 2006-07-18 | Camera vibration discerning device and method for digital video recorder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100290616A CN101110905A (en) | 2006-07-18 | 2006-07-18 | Camera vibration discerning device and method for digital video recorder |
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| CN101110905A true CN101110905A (en) | 2008-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006100290616A Pending CN101110905A (en) | 2006-07-18 | 2006-07-18 | Camera vibration discerning device and method for digital video recorder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196168A (en) * | 2010-03-17 | 2011-09-21 | 佳能企业股份有限公司 | Anti-shake circuit for an imaging device |
| CN104539938A (en) * | 2014-11-27 | 2015-04-22 | 天津天地伟业数码科技有限公司 | Method for detecting running state of dome camera |
| CN107852459A (en) * | 2015-07-21 | 2018-03-27 | 高通股份有限公司 | Camera orients notice system |
-
2006
- 2006-07-18 CN CNA2006100290616A patent/CN101110905A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196168A (en) * | 2010-03-17 | 2011-09-21 | 佳能企业股份有限公司 | Anti-shake circuit for an imaging device |
| CN102196168B (en) * | 2010-03-17 | 2013-11-13 | 佳能企业股份有限公司 | Anti-shake circuit for an imaging device |
| CN104539938A (en) * | 2014-11-27 | 2015-04-22 | 天津天地伟业数码科技有限公司 | Method for detecting running state of dome camera |
| CN107852459A (en) * | 2015-07-21 | 2018-03-27 | 高通股份有限公司 | Camera orients notice system |
| CN107852459B (en) * | 2015-07-21 | 2019-03-19 | 高通股份有限公司 | Camera orients notice system |
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