CN101969719A - Intelligent lamplight control system and control method thereof - Google Patents
Intelligent lamplight control system and control method thereof Download PDFInfo
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The invention provides a camera-based intelligent lamplight control system and a method thereof. The method comprises the following steps of: shooting an indoor image by using a camera, then analyzing the image, determining the indoor required lamplight information according to the analysis result, and deploying the lamplight control system by using the information to adjust the indoor lamplight so as to fulfill the purpose of intelligently controlling the lamplight. The system does not need manual intervention, determines the required illumination condition by image acquisition and video/image content analysis, and does not need manpower to select a scene mode and the like so as to realize real intellectualization.
Description
[technical field]
The present invention relates to intelligent lighting control field, particularly about a kind of intelligent light control system and method thereof based on graphical analysis.
[background technology]
Intelligent lighting control is a human target of pursuing always.In the room, multiple lighting apparatus such as headlight, corridor lamp, desk lamp, night-light are arranged usually, in order to control these lighting apparatus easily, people have invented various control instruments such as double control switch, audio-switch, make the switch of lamp of being seen everywhere on the metope of family.Because different application needs, as reading, see TV etc., the angle that requires from vision is different to the requirement of light.Forgotten when sometimes withdrawing from a room and turned off the light, may make lamp be in the state of light yellow for a long time, wasted electric energy, also reduced the useful life of light fixture.When sleeping, if lamp is also being opened, electricity wasting not only also is disadvantageous to the rest of human body.If can design a kind of lamp light control system of intelligence, can turn on light, turn off the light, adjust functions such as brightness, switching light fixture according to human needs, not only can economize on electricity, also can improve people's quality of the life greatly.
At present, exist many by changing the system of the intelligent lamps of realization such as power circuit, lighting control circuit, mostly this system is to increase hommization in the control of light, simplify or optimized control method, real control still is that manual operation realizes, is not intelligence system truly.Also have by contextual model and carry out light control, just disclosed a kind of system that carries out light control by contextual model for No. 03140255.0 as Chinese patent, but this system needs the artificial selection contextual model, does not also realize real intellectuality.And No. 200720045338.4 proposition of Chinese patent application regulated and control light with analog video signal, but its concrete control strategy, intellectual analysis etc. all are more coarse, can not provide concrete control method according to the specific situation of more refinement.
[summary of the invention]
The object of the present invention is to provide a kind of intelligent light control system, it can Based Intelligent Control light, realizes intelligent lighting.
Another object of the present invention is to provide a kind of intelligent lighting control method, to realize Based Intelligent Control to light.
For reaching aforementioned purpose, a kind of intelligent light control system of the present invention, it comprises image acquisition units, human detection module, human body behavioural analysis module and lighting control module; Wherein
Image acquisition units is used to gather video or image;
Human detection module detects aforementioned video or image, and whether judge has human body to exist and output signal in this video or the image, and described lighting control module is according to the keying of the described output signal control illuminator of human detection module;
Human body behavioural analysis module is carried out analysis and judgement with the behavioural information that obtains human body and with behavior information output to aforementioned video or image, described lighting control module according to the behavior information brightness of light fixture is adjusted.
Further, aforementioned image acquisition units is a camera, and it can be that the camera of wide-angle or camera that can taking turn or a plurality of camera are united and carried out.
Further, described camera is infrared/near infrared camera.
Further, described human detection module is by a large amount of human bodies and non-human body image training of human body grader, the image that image acquisition units is obtained is divided into the window of a plurality of different scales then, each window is imported the human body grader respectively, judge whether human body of this window according to the output of grader, then that the position is approaching human body window merges, and obtains detected human region.
Further, described human body behavioural analysis module is selected several human body images, behavior to human body in the image is demarcated, calibrated image is carried out feature extraction, and training AdaBoost grader, for the image that image acquisition units is obtained,, determine the behavior of human body according to classification results with human region image input AdaBoost grader wherein.
Further, in lighting control module, prestore and set up the table of comparisons of behavior-brightness according to the result of study of ophthalmology, after determining the human body behavior, determine the brightness of needs according to behavior-brightness comparison table, described lighting control module carries out the brightness adjustment according to this brightness to light fixture.
Further, described intelligent light control system further comprises light-sensitive detector, it is that the brightness of light-sensitive detector induction and the expectation brightness that obtains by human body behavioural analysis result are compared that described lighting control module carries out the brightness adjustment to light fixture, if the brightness of light-sensitive detector induction and the absolute difference of described expectation brightness are then adjusted less than reservation threshold finish, otherwise continue to adjust.
For reaching aforementioned another purpose, a kind of intelligent lighting control method of the present invention, it comprises:
Utilize image acquisition units to gather video or image;
Whether video or the image of being gathered, judging has human body to exist, then to start illuminator if detect human body in the image if being carried out human detection; If do not detect human body, then close illuminator;
Video or the image of being gathered carried out the human body behavioural analysis,, the light fixture of illuminator is carried out the brightness adjustment according to the result of human body behavioural analysis.
Intelligent light control system of the present invention is analyzed the human body behavior by the camera photographic images, and definite object brightness that needs is determined current visible light brightness by light-sensitive detector then, and light fixture is carried out the brightness adjustment, up to the brightness that obtains expecting.The present invention does not need manual intervention, intelligent degree height.
[description of drawings]
Fig. 1 is the structured flowchart of intelligent light control system in the embodiment of the invention.
Fig. 2 is the method flow diagram of intelligent light control system in the embodiment of the invention.
Fig. 3 is for selecting the flow chart of corresponding light fixture according to position of human body in the embodiment of the invention.
Fig. 4 determines flow chart for lamp brightness in the embodiment of the invention.
Fig. 5 adjusts flow chart for tool brightness among the lamp embodiment of the present invention.
[embodiment]
Detailed description of the present invention is mainly come the running of direct or indirect simulation technical solution of the present invention by program, step, logical block, process or other symbolistic descriptions.Be the thorough the present invention that understands, in ensuing description, stated a lot of specific detail.And when not having these specific detail, the present invention then may still can realize.Affiliated those of skill in the art use these descriptions herein and state that the others skilled in the art in affiliated field effectively introduce their work essence.In other words, be the purpose of the present invention of avoiding confusion, because the understanding easily of method of knowing and program, so they are not described in detail.
Alleged herein " embodiment " or " embodiment " are meant special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention.Different in this manual local " in one embodiment " that occur not are all to refer to same embodiment, neither be independent or optionally mutually exclusive with other embodiment embodiment.In addition, represent the sequence of unit in method, flow chart or the functional block diagram of one or more embodiment and revocablely refer to any particular order, also be not construed as limiting the invention.
Intelligent light control system of the present invention can be the lamp light control system of family, it also can be the lamp light control system of office space, the perhaps lamp light control system in other place, being example with common room in the family below is elaborated to the structure of lamp light control system of the present invention, the night-light that suppose to have in the room headlight that is positioned at roof central authorities, the bedside lamp that is positioned at head of a bed both sides in this embodiment, is positioned at the desk lamp on the desk and is positioned at the corner, other lamp except that night-light all has the function of adjustable brightness.In other embodiments, the number of lamp, position and concrete effect can be provided with according to actual conditions.
See also shown in Figure 1, intelligent light control system 1 in one embodiment of the present of invention comprises the image acquisition units 10 of images acquired, the image analyzing unit 20 that image is analyzed and the lighting control module 30 that lighting (not shown) is controlled, and wherein image analyzing unit 20 comprises human detection module 201, position of human body analysis module 202 and human body behavioural analysis module 203 again.The image information that image acquisition units 10 is gathered is transferred to image analyzing unit 20, is analyzed and analysis result is exported to lighting control module 30 by 20 pairs of described images of image analyzing unit.
Aforementioned image acquisition units 10 is a camera, carries out the collection of off-the-air picture by camera.No matter the people is positioned at which indoor position (except the position that cupboard etc. can be blocked fully), all should be able to detect from image, for this reason, should guarantee the coverage of the camera All Ranges in can covering chamber.Camera that such requirement can be by utilizing wide-angle or camera that can taking turn or a plurality of camera are united and are carried out.Unite for taking turn camera or a plurality of camera and to take, need carry out the splicing of image, do not repeat to guarantee indoor zone.The method of splicing can adopt that the wavelet field of image is handled, matrix switches the lamp method, is to be familiar with the content that the those of ordinary skill in this field should be known about the concrete principle of image splicing and method, repeats no more herein.In addition, in order in the environment of dark, also to photograph the image that needs, can adopt infrared/near infrared camera to take.
See also shown in Figure 2ly, it shows the flow chart of a kind of control method of intelligent light control system 1, and this control method comprises the steps:
Step 21: at first 10 pairs of indoor images of image acquisition units carry out video or IMAQ, and video or the image information that collects is transferred to image analyzing unit 20.
Step 22: the video of 201 pairs of present frames of human detection module of image analyzing unit 20 or image carry out human detection.Wherein in one embodiment of the invention, human detection adopts the method based on Adaboost, at first by a large amount of human bodies and non-human body image training of human body grader, the window that then current frame image that obtains is divided into a plurality of different scales, each window is imported described trained human body grader respectively, judge according to the output of grader whether this window has human body, then that the position is approaching human body window merges, and obtains detected human region.Further, on the basis of human detection, human detection module 201 can also be carried out human body tracking to current video or image.And human body tracking has method based on Mean Shift, based on the method for statistical model, based on the method for piece coupling etc.About how carrying out the whole bag of tricks of human body tracking, be the technology that those skilled in the art should know, this specification is no longer to the detailed process of the whole bag of tricks detailed explanation one by one.The purpose of human body tracking is to reduce amount of calculation, improves the accuracy of human detection.Can determine whether there is human body in the image, have what human bodies by human detection and human body tracking, human body be arranged in image which place etc. information, utilize these information can carry out operations such as follow-up position of human body analysis or human body behavioural analysis.
Step 23: do not have human body if the testing result of human detection module 201 shows in the image of taking, then think and have no talent in this room, human detection module 201 outputs this moment do not detect the testing result of human body and give lighting control module 30, and then lighting control module 30 is closed all light fixtures.
Step 24: have human body if human detection module 201 detects in the image of shooting, then start illuminator.
In the abovementioned steps 24, in case detect the illuminator of the indoor people of having in will priming chamber, and electric energy is saved in the accurate control of illuminator in order further to realize, when abovementioned steps 23 detects the indoor people of having, can also further carry out the analysis (step 25) of human body present position or the analysis (step 26) of human body behavior, accurately regulate illuminator (step 27) according to the behavior of residing position of human body or human body then the human body in the image.
Please continue to consult shown in Figure 2, step 25 determines that the purpose of position of human body is to determine the light fixture used.Determine that according to position of human body needs adjust the light fixture of which position, can determine corresponding light fixture according to pre-determined regional corresponding relation, can accurately control the concrete lighting of startup like this, for example near the desk lamp that just utilizes the desk on the desk, if in bed just with the desk lamp of the head of a bed etc.Also can utilize principle nearby, which light fixture human body just utilizes recently from which light fixture, does not need to determine in advance the corresponding relation of zone and light fixture like this, and adaptability is stronger.Indoor have not only people, and may need to use one this moment also may need to use a plurality of light fixtures.
About specifically how determining that human body is positioned at the method for which position in room, sees also shown in Figure 3.For family room, arrange the room after, can often not carry out big adjustment usually, therefore, adopt in one embodiment of the present of invention with respect to human body to be prospect, indoorly to be the analytical method of background.It comprises the steps:
Step 251:, gather a few frame off-the-air pictures earlier and carry out background modeling by the method for background modeling.Here, can think indoor a kind of background that has incessantly, carry out one or two kind of common background modeling.
Step 252: can carry out the demarcation of indoor main region behind the background modeling,, determine the main light fixture that human body uses when zones of different as desk zone, bed zone etc.
Step 253: position of human body analysis module 202 obtains current frame image.
Step 254: current frame image and background subtracting are obtained prospect, and zone (for example animal of the non-background that occurs in the prospect, toy or go-cart etc.) inhuman in the eliminating prospect then obtains the human region in the prospect,
Step 255: human region in the prospect and background are compared, determine the regional location at human body place and determine corresponding light fixture.
Because vision is had the greatest impact by light, therefore, the selection of light fixture should just be selected in the zone at number of people place according to the zone at eyes place, therefore, determining to detect the number of people further behind the position of human body, determining the light fixture of selecting according to number of people position.Can adopt method equally about the detection of the number of people, specifically can no longer describe in detail herein with reference to the method for aforementioned human detection based on Adaboost.
Position of human body analysis module 202 analyzes the particular location of human body and afterwards analysis result is exported to lighting control module 30, is chosen corresponding light fixture and is lighted this light fixture by lighting control module 30.
Please continue to consult shown in Figure 2, the purpose that step 26 is carried out the human body behavioural analysis is to determine the brightness of light fixture.Human body behavior common in the room has reading and writing, sweeps, sleeps, stares blankly etc., for different behaviors, is different for the requirement of intensity of light.
Shown in Figure 4 about how determining that human body behavior and corresponding method of carrying out the intensity of light adjustment see also, it comprises the steps:
Step 261: human body behavioural analysis module receives the human region image information that the human detection module analysis goes out.
Step 262:, can train human body behavior grader to carry out the classification of human body behavior because different behaviors has difference.Specific practice is, selects several human body images, and its behavior is demarcated, and calibrated image is carried out feature extraction, and training AdaBoost grader.For input picture,, determine the behavior of human body according to classification results with human body image input AdaBoost grader wherein.
Step 263:, can set up the table of comparisons of behavior-brightness according to the result of study of ophthalmology because the optimal brightness of every kind of behavior correspondence has result of study.
Step 264: after determining the human body behavior, the analysis result of human body behavioural analysis module 203 is exported to lighting control module 30, determines the brightness of needs by lighting control module 30 according to behavior-brightness comparison table, according to this brightness light fixture is adjusted.
The main target of lighting control module 30 is to adjust according to the light fixture of selecting and definite brightness.The prerequisite of carrying out the brightness adjustment is to know current brightness, the method of sensed luminance commonly used is to utilize photosensitive detector, for this reason, in indoor each functional areas a light-sensitive detector is set, because the light of human eye intelligent-induction visible-range, accuracy in order to guarantee that brightness is adjusted requires light-sensitive detector can only respond to the light of visible-range.
The flow chart that Fig. 5 adjusts for lamp brightness, wherein Ic is the detected current brightness of photosensitive detector, It is the object brightness that is obtained by behavior-brightness comparison table.If satisfy following formula, illustrate that current brightness is very approaching with expectation brightness, the brightness adjustment is finished, otherwise the brightness adjustment is not also finished, and wherein Eth is a preset threshold value.
|I
c-I
t|＜E
th (1)
If following formula does not satisfy, and I
c＜I
t, detected brightness is described less than expectation brightness, needing increases brightness, and then compares; If I
c＞I
t, illustrate that detected brightness less than expectation brightness, need reduce brightness, compare again.Circulation above repeating is satisfied up to (1) formula, stops the brightness adjustment.
The change of lamp brightness belongs to existing technology, can change lamp brightness by modes such as divider resistance, shuntings, no longer describes in detail here.In the adjustment of brightness, to regulate the speed in order improving, and not make eyes because brightness changes the too fast uncomfortable sensation that produces, the method that can adopt classification to adjust.
In an embodiment of the present invention, can carry out the position of human body analysis separately, select corresponding light fixture, light corresponding light fixture by the control lighting module.Also can carry out the human body behavioural analysis separately, adjust the brightness of whole illuminator by the control lighting module.Also can be that the light fixture of determining correspondence is analyzed in advanced pedestrian body position, carry out the human body behavioural analysis then, in indoor each functional areas a light-sensitive detector is set, after determining the human body position, only start this regional light-sensitive detector, according to the brightness and expectation brightness of human body behavior, adjust the brightness of corresponding light fixture by the control lighting module then by the light-sensitive detector of more specific position.
Therefore, in the time only need carrying out light control to the residing position of human body, image analyzing unit 20 can comprise human detection module 201 and position of human body analysis module 202, but does not comprise human body behavioural analysis module 203; In the time only need carrying out light control according to the human body behavior, image analyzing unit 20 can comprise human detection module 201 and human body behavioural analysis module 203, but does not comprise position of human body analysis module 202.
Described intelligent light control system, analyze the position and/or the human body behavior of human body by the camera photographic images, the light fixture of definite unlatching that needs and/or the object brightness of this light fixture, and control the keying of this light fixture, can also further determine current visible light brightness, and object brightness is adjusted in the brightness of this light fixture by light-sensitive detector.The present invention does not need manual intervention, intelligent degree height.
Above-mentioned explanation has fully disclosed the specific embodiment of the present invention.It is pointed out that and be familiar with the scope that any change that the person skilled in art does the specific embodiment of the present invention does not all break away from claims of the present invention.Correspondingly, the scope of claim of the present invention also is not limited only to previous embodiment.
Claims (14)
1. intelligent light control system, it is characterized in that: it comprises image acquisition units, human detection module, human body behavioural analysis module and lighting control module; Wherein
Image acquisition units is used to gather video or image;
Human detection module detects aforementioned video or image, and whether judge has human body to exist and output signal in this video or the image, and described lighting control module is according to the keying of the described output signal control illuminator of human detection module;
Human body behavioural analysis module is carried out analysis and judgement with the behavioural information that obtains human body and with behavior information output to aforementioned video or image, described lighting control module according to the behavior information brightness of light fixture is adjusted.
2. intelligent light control system as claimed in claim 1 is characterized in that: aforementioned image acquisition units is a camera, and it can be that the camera of wide-angle or camera that can taking turn or a plurality of camera are united and carried out.
3. intelligent light control system as claimed in claim 2 is characterized in that: described camera is infrared/near infrared camera.
4. intelligent light control system as claimed in claim 1, it is characterized in that: described human detection module is by a large amount of human bodies and non-human body image training of human body grader, the image that image acquisition units is obtained is divided into the window of a plurality of different scales then, each window is imported the human body grader respectively, judge whether human body of this window according to the output of grader, then that the position is approaching human body window merges, and obtains detected human region.
5. intelligent light control system as claimed in claim 1, it is characterized in that: described human body behavioural analysis module is selected several human body images, behavior to human body in the image is demarcated, calibrated image is carried out feature extraction, and training AdaBoost grader, for the image that image acquisition units is obtained,, determine the behavior of human body according to classification results with human region image input AdaBoost grader wherein.
6. intelligent light control system as claimed in claim 5, it is characterized in that: in lighting control module, prestore and set up the table of comparisons of behavior-brightness according to the result of study of ophthalmology, after determining the human body behavior, determine the brightness of needs according to behavior-brightness comparison table, described lighting control module carries out the brightness adjustment according to this brightness to light fixture.
7. intelligent light control system as claimed in claim 6, it is characterized in that: described intelligent light control system further comprises light-sensitive detector, it is that the brightness of light-sensitive detector induction and the expectation brightness that obtains by human body behavioural analysis result are compared that described lighting control module carries out the brightness adjustment to light fixture, if the brightness of light-sensitive detector induction and the absolute difference of described expectation brightness are then adjusted less than reservation threshold finish, otherwise continue to adjust.
8. intelligent lighting control method, it is characterized in that: it comprises:
Utilize image acquisition units to gather video or image;
Whether video or the image of being gathered, judging has human body to exist, then to start illuminator if detect human body in the image if being carried out human detection; If do not detect human body, then close illuminator;
Video or the image of being gathered carried out the human body behavioural analysis,, the light fixture of illuminator is carried out the brightness adjustment according to the result of human body behavioural analysis.
9. intelligent light control system as claimed in claim 8 is characterized in that: aforementioned image acquisition units is a camera, and it can be that the camera of wide-angle or camera that can taking turn or a plurality of camera are united and carried out.
10. intelligent light control system as claimed in claim 9 is characterized in that: described camera is infrared/near infrared camera.
11. intelligent lighting control method as claimed in claim 8, it is characterized in that: it is at first by a large amount of human bodies and non-human body image training of human body grader that aforementioned human detection is followed the tracks of, the window that then input picture is divided into a plurality of different scales, each window is imported the human body grader respectively, judge whether human body of this window according to the output of grader, then that the position is approaching human body window merges, and obtains detected human region.
12. intelligent lighting control method as claimed in claim 8, it is characterized in that: described human body behavioural analysis further comprises: select several human body images, its behavior is demarcated, calibrated image is carried out feature extraction, and training AdaBoost grader, for input picture,, determine the behavior of human body according to classification results with human body image input AdaBoost grader wherein.
13. intelligent lighting control method as claimed in claim 8, it is characterized in that: according to human body behavioural analysis result lamp brightness is adjusted further and comprised: the table of comparisons of setting up behavior-brightness according to the result of study of ophthalmology, after determining the human body behavior, determine the brightness of needs according to behavior-brightness comparison table, light fixture is adjusted according to this brightness.
14. intelligent lighting control method as claimed in claim 13, it is characterized in that: according to human body behavioural analysis result lamp brightness is adjusted further and comprised: each functional areas in illuminator are provided with light-sensitive detector, the brightness of light-sensitive detector induction is compared with the expectation brightness that obtains by human body behavioural analysis result, if the brightness of light-sensitive detector induction and the absolute difference of described expectation brightness are then adjusted less than reservation threshold finish, otherwise continue to adjust.
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