CN1655613A - Luminance signal level correction method for digital video frequency video recorder for supervision - Google Patents
Luminance signal level correction method for digital video frequency video recorder for supervision Download PDFInfo
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- CN1655613A CN1655613A CN 200410016209 CN200410016209A CN1655613A CN 1655613 A CN1655613 A CN 1655613A CN 200410016209 CN200410016209 CN 200410016209 CN 200410016209 A CN200410016209 A CN 200410016209A CN 1655613 A CN1655613 A CN 1655613A
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- supervision
- camera
- luminance level
- digital video
- brightness value
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Abstract
This invention relates to monitor data video taper recorder brightness signal level reinforcing method, which comprises the following steps: inspecting the monitor cameral spot brightness set with certain time interval by the user for memory management; at the same time referring to the brightness value to reinforce the cameral video tape recorder signal level; then storing the reinforced brightness level image signals to the HD medium inside the cameral.
Description
(1) technical field
The invention relates to the luminance level correction method that monitors with digital video recorder, refer in particular to about brightness value according to the place that supervision usefulness camera is set, revisal monitors the luminance level of the video image of taking with camera, then the record of the video image after the revisal is stored into a kind of luminance level correction method that monitors with digital video recorder on hard disk (HDD) or the CD recording mediums such as (Opticaldisc).
(2) background technology
Recently, the supervision that can monitor a plurality of zones is simultaneously constantly being developed universal with digital video recorder (DVR:Digital VideoRecorder).Above-mentioned supervision is with the hard disk drive that comprises the hard disk memories such as (HDD) that can store jumbo video or voice data in the digital video recorder (DVR), with can be at re-recordable optical disc, such as on the CDs such as CD-RW, the CD drive (Disc Driver) of record store video or voice data.
In addition, above-mentioned general supervision digital video recorder (DVR) 300, as shown in Figure 1, with a plurality of supervision cameras 10 that disperse to be arranged on several zones that need monitor respectively
1-10n, simultaneously and a plurality of supervision with inductor 20
1-20
kBe connected etc. multiple peripheral device.
In addition, above-mentioned supervision can be connected with the PC 500 of the system operator that is positioned at distant location by network 400 with digital video recorder (DVR) 300, such as, monitor a plurality of supervision camera 10 at above-mentioned supervision digital video recorder (DVR) 300
1The variable quantity of the signal of video signal of-10n production, when the variable quantity of this signal of video signal surpasses the benchmark variable quantity that is provided with in advance, perhaps from a plurality of supervision with inductor 20
1-20
kWhen receiving detection signal, just judging has effractor's intrusion incident to take place.
And, when detecting the incident generation, as shown in Figure 2, will be arranged on the supervision camera 10 of respective regions by said process
1The signal of video signal of-10n production records on the hard disk (HDD).
In addition, state documentarily in the process of signal of video signal, incident is removed or is had time continuity and is recorded in signal of video signal on the hard disk, promptly detect the record size of incident video data, such as when surpassing 40Mbytes, this incident will be detected (Rec_Start), the incident video data is recorded, and video data is generated as a data file and manages.
Therefore, said system network operator just can confirm from the supervision images of above-mentioned supervision with digital video recorder (DVR) 300 real-time conveyings, perhaps can retrieve and confirm that record is stored in the data file on the above-mentioned hard disk, confirms with information such as effractors event situation before this then.
But, when the variable quantity of the video image that general supervision is taken with camera in above-mentioned supervision with digital video recorder 300 surpasses the benchmark variable quantity, because will be above-mentioned supervision with camera 10
1The video image record that-10n takes stores in the hard disk, so monitor the lower or mutual different words of different time with the place brightness of camera when being provided with, will take down the low brightness signal level, therefore, the video image that can not discern the low brightness signal level of image will be recorded on the hard disk, cause the supervision inefficiency.
(3) summary of the invention
The present invention proposes in order to address the above problem, the object of the present invention is to provide a kind of luminance level correction method that monitors with digital video recorder, the certain hour that luminance level compensation method of the present invention is set with the user detects at interval the brightness value that monitors with the place of camera is set, carry out storage administration, with reference to this brightness value, revisal monitors the luminance level of the video image signal of taking with camera, right family just can with above-mentioned by revisal the signal of video signal of intensity level write down and store on the recording mediums such as hard disk that are provided with in the device.
Supervision of the present invention is connected with a plurality of inductors with camera with a plurality of supervision with digital video recorder, and is connected with the operation computer by network.To achieve these goals, the supervision of the present invention luminance level correction method of digital video recorder is characterized in that comprising:
First step is operated a plurality of brightness detectors that control is connected with camera with described each supervision or is arranged on device inside, detects the brightness value of supervision with the place of camera is set;
Second step, according to described brightness value, revisal monitors the luminance level of the video image signal of taking with camera, becomes the signal of video signal that has been compensated intensity level;
Third step, with described by revisal the signal of video signal of intensity level, record stores on the recording medium that is provided with in the device.
Effect of the present invention:
The supervision of the present invention that has above-mentioned formation and operate as mentioned above has very high practical value with the luminance level correction method of digital video recorder.The certain hour that this method is set with the user detects at interval the brightness value that monitors with the place of camera is set, carry out storage administration, simultaneously, with reference to this brightness value, revisal monitors the luminance level of the video image signal of taking with camera, then with above-mentioned by revisal the signal of video signal record of intensity level store on the recording mediums such as hard disk that are provided with in the device.Like this, the video image that just can prevent to carry out the low brightness signal level of image identification in advance records in the hard disk, thereby can improve supervision efficient.
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.
(4) description of drawings
Fig. 1 is general supervision with data video cassette recorders (DVR) and a plurality of supervision with cameras and inductor, and the connection status figure of network operator's PC etc.;
Fig. 2 is the data file process sketch map of general supervision in the data video cassette recorders (DVR);
Fig. 3 be used supervision of the present invention with the supervision of the signal level correction method of digital video recorder with digital video recorder and a plurality of brightness detector, supervision with camera and inductor, and the connection status figure of network operator's PC etc.;
Fig. 4 is camera is used in supervision of the present invention with each supervision of storage administration on the digital video recorder brightness value form state figure;
Fig. 5 is the operational flowchart of supervision of the present invention with the luminance level correction method of digital video recorder.
The symbol description of major part in the accompanying drawing:
10
1-10
n, camera 20
1-20
k, inductor
60
1-60
n, brightness detector 300, digital video recorder
400, network
500, PC
(5) embodiment
Below with reference to accompanying drawings the desirable embodiment of supervision of the present invention with the luminance level correction method of digital video recorder is elaborated.
Fig. 3 has used supervision digital video recorder 300 and a plurality of brightness detector 60 of supervision of the present invention with the signal level correction method of digital video recorder
1-60
n, monitor with camera 10
1-10
nWith inductor 20
1-20
k, and the connection status figure of network operator's PC 500 etc.
In addition, as shown in Figure 3, a plurality of brightness detectors 60
1-60
nCan be arranged on the supervision camera 10 of monitor area with dispersion
1-10
nConnect setting, also can be arranged on supervision camera 10
1-10
nInside.In addition, above-mentioned brightness detector 60
1-60
nCan use optical measuring instrument (photo meter), measure supervision camera 10
1-10
nTake the brightness in place, illuminometer is shown brightness value.
And, above-mentioned brightness detector 60
1-60
nUnder the operation control of above-mentioned supervision with digital video recorder 300, the certain hour of setting with the user is a brightness value of measuring respective regions at interval respectively.Above-mentioned supervision detects the brightness value that obtains at interval according to certain hour and distinguishes and store on the specific region or other memories that is provided with in addition that is arranged on the hard disk in the device above-mentioned with digital video recorder 300.
Such as, above-mentioned supervision digital video recorder 300, as shown in Figure 4, will be with certain hour at interval from above-mentioned a plurality of brightness detectors 60
1-60
nBrightness value (the Luminance_1 that detection obtains ... Luminance_k) according to different time (Time_1 ... Time_k) with different supervision camera 10
1-10
nDistinguish storage.
In addition, above-mentioned supervision digital video recorder 300, after confirming the current time, the brightness value of corresponding corresponding supervision of this current time with camera read in retrieval, simultaneously with reference to this brightness value, carry out a series of operation, with the luminance level revisal that monitors the video image signal of taking with camera for more than certain luminance level that can carry out image identification, then just can with above-mentioned by revisal the signal of video signal of intensity level write down and store on the recording mediums such as hard disk that are provided with in the device.To be described in detail this below.
Fig. 5 is the operational flowchart of supervision of the present invention with the luminance level correction method of digital video recorder.
Below according to Fig. 5 and with reference to Fig. 3, the operating process of luminance level correction method of the present invention is elaborated.
Flow process begins.
S10, driving monitors with digital video recorder (DVR) 300 systems, monitors the supervision camera 10 that disperses to be arranged on each zone
1-10
nThe variable quantity of the video image of taking surpasses the benchmark variable quantity, when the variable quantity of this video image has surpassed predefined fiducial value, just judge the incident that the effractor invades that taken place, just carry out a series of supervisory work then, with this video image signal record on hard disk or other recording medium.
S11, in addition, will judge that the user will set luminance level revisal pattern this moment? if judge and do not set luminance level revisal pattern that flow process is got back to S10.
S12, if above-mentioned judgement, the user need set luminance level revisal pattern, monitor with digital video recorder 300, carry out luminance level revisal pattern when being provided with at customer requirements such as system operator, receive the requirement of user's input, monitor the time interval that the brightness in place is checked, store in the device and manage.
S13, and, being spaced apart benchmark input time with the user who receives by said process, operation control monitors with camera 10 with each
1-10
nBe connected or be arranged on a plurality of brightness detectors 60 of device inside
1-60
n, detect the corresponding brightness value of each place brightness.
S14, simultaneously, as shown in Figure 4, the brightness value that this detection is obtained according to different time and different supervision with camera 10
1-10
nDistinguish storage and management.
S15, then, above-mentioned supervision is carried out general supervisory work with digital video recorder 300, confirms the current time simultaneously.
S16 monitors with camera 10 according to difference
1-10
nRetrieve and read above-mentioned corresponding brightness value of the current time that is identified.
S17, will with the corresponding supervision of this brightness value with camera 10
1-10
nThe luminance level revisal of the video image of taking is treated to the above luminance level of certain level that can carry out image identification, the video image record that will be somebody's turn to do by revisal luminance level simultaneously stores on hard disk or other recording medium, perhaps exports demonstration by the user display outside remote.
Like this, video image that not only can record storage can carrying out image identification on the hard disk that above-mentioned supervision is provided with in digital video recorder 300 with certain level, simultaneously, the video image that the user can also normal identification shows by display output.
Above-mentioned brightness detector 60
1-60
nCan use optical measuring instrument (photo meter) other polytype brightness detectors in addition, also can with camera use be set independently with monitoring.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense, so be not 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 distortion of the above embodiment.
Claims (5)
1, a kind of luminance level correction method that monitors with digital video recorder, described supervision is connected with a plurality of inductors with camera with a plurality of supervision with digital video recorder, and be connected with computer by network, described luminance level correction method is characterised in that and comprises:
First step is operated a plurality of brightness detectors that control is connected with camera with described each supervision or is arranged on device inside, detects the brightness value of supervision with the place of camera is set;
Second step, according to described brightness value, revisal monitors the luminance level of the video image signal of taking with camera, has become by revisal the signal of video signal of intensity level;
Third step, with described by revisal the signal of video signal record of intensity level store on the recording medium that is provided with in the device.
2, the supervision as claimed in claim 1 luminance level correction method of digital video recorder is characterized in that:
Detect in the described first step and the brightness value that monitors with the place of camera is set is, the certain hour of setting according to the user detects respectively and stores at interval the brightness value that monitors the place of using camera is set.
3, the supervision as claimed in claim 1 luminance level correction method of digital video recorder is characterized in that:
Revisal monitors that the luminance level of the video image signal of taking with camera is in described second step, the certain hour of setting according to the user at interval in the middle of the brightness value of detection of stored retrieval be certain level more than with corresponding supervision with the luminance level revisal of the signal of video signal of camera setting with reference to corresponding brightness value of current time.
4, the supervision as claimed in claim 1 luminance level correction method of digital video recorder is characterized in that:
Described third step is, the described signal of video signal record that obtains the luminance level of revisal is stored on the recording medium that is provided with in the device, exports demonstration by remote subscriber's display simultaneously.
5, the supervision as claimed in claim 1 luminance level correction method of digital video recorder is characterized in that:
Described be arranged on above-mentioned supervision inner or coupled other brightness detector detect described brightness value with camera after, described brightness value distinguished with camera with different supervision according to different time stores on the specific region or other memories that is provided with in addition that is arranged on the hard disk in the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016209 CN1655613A (en) | 2004-02-11 | 2004-02-11 | Luminance signal level correction method for digital video frequency video recorder for supervision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410016209 CN1655613A (en) | 2004-02-11 | 2004-02-11 | Luminance signal level correction method for digital video frequency video recorder for supervision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1655613A true CN1655613A (en) | 2005-08-17 |
Family
ID=34892203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410016209 Pending CN1655613A (en) | 2004-02-11 | 2004-02-11 | Luminance signal level correction method for digital video frequency video recorder for supervision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1655613A (en) |
-
2004
- 2004-02-11 CN CN 200410016209 patent/CN1655613A/en active Pending
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