CN105389571A - Image acquisition system and image acquisition method - Google Patents
Image acquisition system and image acquisition method Download PDFInfo
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- CN105389571A CN105389571A CN201510900804.1A CN201510900804A CN105389571A CN 105389571 A CN105389571 A CN 105389571A CN 201510900804 A CN201510900804 A CN 201510900804A CN 105389571 A CN105389571 A CN 105389571A
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- optical filter
- steering order
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
Abstract
An embodiment of the present invention discloses an image acquisition system. The system comprises a light sensor, a controller, a rotary multi-filter apparatus and an imager, wherein the light sensor is used for obtaining light illuminance data in a target environment; the controller is used for generating a corresponding first control instruction according to the light illuminance data; the rotary multi-filter apparatus is used for switching a filter to a corresponding target filter in the target environment according to the first control instruction; and the imager is used for obtaining an image in the target environment after the target filter adjusts light intensity in the target environment. An embodiment of the present invention further provides an image acquisition method. According to the image acquisition system and the image acquisition method, images in different environments can be acquired; filters can be switched with environment changes; and the light intensity in the target environment can be adjusted by the target filter, so as to obtain an image with higher quality. Therefore, the workload can be reduced, equipment costs can be reduced, and device miniaturization can be facilitated.
Description
Technical field
The embodiment of the present invention relates to secure authentication technology and human body biological characteristics recognition technology field, particularly relates to a kind of system of image acquisition and the method for image acquisition.
Background technology
Biometrics identification technology is the most convenient at present and the identity recognizing technology of safety, and biometrics identification technology can utilize the physiological characteristic of people and behavioural characteristic to identify.Wherein, recognition of face is a large focus in current biological feature identification field, and compared with the fingerprint identification technology of widespread use, recognition of face has relatively more directly perceived, convenient, untouchable and that user's order of contact is high advantage.
The impact that traditional man face image acquiring equipment is in use subject to light is very large, and the light of environment directly affects the picture quality that man face image acquiring equipment gathers.In the prior art, provide a kind of exposure parameter by adjusting multiple image-generating unit and obtain the image that each image-generating unit collects, and after the view data corresponding according to the image obtained compare, extract optimum image, reach with this object gathering qualitative picture.
But in prior art, utilize multiple image-generating unit to collect the image of more high-quality, in fact depend on the number of image-generating unit, in other words, the number of image-generating unit directly determines the quality of image.If image-generating unit quantity is few, then be difficult to collect suitable image, image-generating unit quantity is many, then reasonable debugging is all needed to the exposure parameter of each image-generating unit, increase workload, and causing equipment cost to increase, too much image-generating unit also can affect the volume of equipment, is unfavorable for device miniaturization.
Summary of the invention
Embodiments provide a kind of system of image acquisition and the method for image acquisition, the image under varying environment can be collected, switch optical filter along with environmental change, by target optical filter, the light intensity under targeted environment is regulated, thus get the image of more high-quality.Can workload be alleviated like this, reduce equipment cost, and be conducive to device miniaturization.
In view of this, first aspect present invention provides a kind of system of image acquisition, it is characterized in that, comprising:
Light sensor, controller, rotary many optical filter devices and imager;
Described light sensor, for obtaining the light illumination data under targeted environment;
Described controller, for first steering order corresponding according to described light illumination data genaration;
Described rotary many optical filter devices, for target optical filter corresponding under according to described first steering order optical filter being switched to described targeted environment;
Described imager, after regulating the light intensity under described targeted environment at described target optical filter, obtains the image under described targeted environment.
In conjunction with first aspect present invention, in the first possibility implementation, described controller specifically comprises the first control module;
Described first control module, for calculating the intensity of illumination under described targeted environment according to described light illumination data, and generates the first steering order corresponding to described intensity of illumination.
In conjunction with first aspect present invention and the first possibility implementation of first aspect, in the second possibility implementation, described rotary many optical filter devices, specifically for receiving described first steering order that described controller generates;
Rotate described optical filter according to described first steering order, and rotate target optical filter corresponding to described targeted environment, wherein, the described central point of target optical filter aligns with the central point of camera lens, and described camera lens is for taking image.
In conjunction with first aspect present invention the second possibility implementation, in the third possibility implementation, described controller specifically comprises the second control module;
Described second control module, for calculating the intensity of illumination under described targeted environment according to described light illumination data, and generate the second steering order corresponding to described intensity of illumination, described second steering order is for controlling light filling circuit.
In conjunction with the third possibility implementation of first aspect present invention, in the 4th kind of possibility implementation, described system also comprises described light filling circuit and infrared lamp array;
Described light filling circuit, for receiving described second steering order, and sends light intensity conditioning signal according to described second steering order to described infrared lamp array;
Described infrared lamp array, for according to the described light intensity conditioning signal received, regulates the luminosity of infrared lamp.
Second aspect present invention provides a kind of method of image acquisition, it is characterized in that, comprising:
Obtain the light illumination data under targeted environment;
First steering order corresponding according to described light illumination data genaration;
Target optical filter corresponding under optical filter being switched to described targeted environment according to described first steering order;
After described target optical filter regulates the light intensity under described targeted environment, obtain the image under described targeted environment.
In conjunction with second aspect present invention, in the first possibility implementation, described first steering order corresponding according to described light illumination data genaration, comprising:
Calculate the intensity of illumination under described targeted environment according to described light illumination data, and generate the first steering order corresponding to described intensity of illumination.
In conjunction with second aspect present invention and second aspect the first may implementation, may in implementation at the second, described optical filter switched to described targeted environment according to described first steering order under corresponding target optical filter, comprising:
Receive described first steering order that described controller generates;
Rotate described optical filter according to described first steering order, and rotate target optical filter corresponding to described targeted environment, wherein, the described central point of target optical filter aligns with the central point of camera lens, and described camera lens is for taking image.
In conjunction with second aspect present invention the second possibility implementation, in the third possibility implementation, after the light illumination data under described acquisition targeted environment, described method also comprises:
Calculate the intensity of illumination under described targeted environment according to described light illumination data, and generate the second steering order corresponding to described intensity of illumination, described second steering order is for controlling light filling circuit.
In conjunction with the third possibility implementation of second aspect present invention, in the 4th kind of possibility implementation, the described intensity of illumination calculated according to described light illumination data under described targeted environment, and after generating the second steering order corresponding to described intensity of illumination, described method also comprises:
Receive described second steering order, and send light intensity conditioning signal according to described second steering order to described infrared lamp array;
According to the described light intensity conditioning signal received, regulate the luminosity of infrared lamp.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In the embodiment of the present invention, provide a kind of system of image acquisition, image capture device obtains the light illumination data under targeted environment, first steering order corresponding according to light illumination data genaration, first steering order is used for optical filter to switch to target optical filter, obtains the image under targeted environment finally by target optical filter.The image under varying environment can be collected by said process, do not need the multiple images obtained by multiple image-generating unit under targeted environment, most suitable image is selected to export again, but switch optical filter along with environmental change, by target optical filter, the light intensity under targeted environment is regulated, thus get the image of more high-quality.Can workload be alleviated like this, reduce equipment cost, and be conducive to device miniaturization.
Accompanying drawing explanation
Fig. 1 is system embodiment schematic diagram of image acquisition in the embodiment of the present invention;
Fig. 2 is another embodiment schematic diagram of system of image acquisition in the embodiment of the present invention;
Fig. 3 is the structural representation of rotary many optical filter devices in the embodiment of the present invention;
Fig. 4 is the vertical view of rotary many optical filter devices in the embodiment of the present invention;
Fig. 5 is the side view of rotary many optical filter devices in the embodiment of the present invention;
Fig. 6 is another embodiment schematic diagram of system of image acquisition in the embodiment of the present invention;
Fig. 7 is another embodiment schematic diagram of system of image acquisition in the embodiment of the present invention;
Fig. 8 is method embodiment schematic diagram of image acquisition in the embodiment of the present invention;
Fig. 9 is an embodiment schematic diagram of the system of image acquisition in application scenarios of the present invention.
Fig. 2 to Fig. 4 Part No. annotates:
1, servomotor; 2, photoelectricity positioning switch; 3, rotary type optical filter pallet; 4, pilot hole; 5, optical filter pallet turning axle; 6, optical filter mounting groove.
Embodiment
Embodiments provide a kind of system of image acquisition, for switching optical filter along with environmental change, by target optical filter, the light intensity under targeted environment is regulated, thus get the image of more high-quality.Can workload be alleviated like this, reduce equipment cost, and be conducive to device miniaturization.
Be described in detail the system of the image acquisition in the present invention below, refer to Fig. 1, the system of a kind of image acquisition that the embodiment of the present invention provides comprises: light sensor 101, controller 102, rotary many optical filter devices 103 and imager 104;
Light sensor 101, for obtaining the light illumination data under targeted environment;
Controller 102, for first steering order corresponding according to light illumination data genaration;
Rotary many optical filter devices 103, for target optical filter corresponding under according to the first steering order optical filter being switched to targeted environment;
Imager 104, after regulating the light intensity under targeted environment at target optical filter, obtains the image under targeted environment.
In the present embodiment, obtain the light illumination data under targeted environment by light sensor.Light sensor is also referred to as brightness impression device, a lot of panel computer and mobile phone are provided with light sensor, generally be positioned at the top of equipment, the brightness of automatic conditioning equipment can be carried out according to the light luminance under the current residing environment of equipment, bring best visual effect to user.Usually, light sensor is made up of two assemblies, i.e. light projector and light-receiving device, utilizing light projector rays pass through lens to be focused on, through transferring to the lens of light-receiving device, then transferring to reception inductor, receive inductor and the light signal received is converted to electric signal, this electric signal can be further used as various different switch and control action, and its ultimate principle does to the light between light projector and light-receiving device the signal that the action of covering obtains to be used, to complete various Automated condtrol.Light sensor used in embodiments of the present invention can be numerical digit inductor, and numerical digit inductor to have precision high, the features such as light sensing scope is large.
Light sensor obtains the light illumination data under targeted environment, be light sensor get current environment under light illumination data, and by the light illumination data collected to carry out environmental monitoring.Light illumination data also can referred to as illuminance data, for representing the luminous flux that shot subject surface unit area is subject to.1 Lux be equivalent to 1 lumen/square metre, i.e. on the area of shot subject every square metre, by distance one meter, luminous intensity is the luminous flux of the light source of 1 candle light, vertical irradiation.Illuminance weighs an important indicator of shooting environmental.
When compute ray illumination, following formula can be adopted to calculate:
Light illumination=luminous flux/area
Wherein, light illumination unit is lux (English full name: Lux, english abbreviation: lx), and lumen is lumen (English full name: lumen, english abbreviation: lm), and square measure is square metre.
Light illumination data can be sent to controller by signal by light sensor, controller is to the light illumination data analysis process received, calculate the light intensity under the targeted environment residing for current device thus, be the light illumination calculated by light illumination data under targeted environment.And then generate first steering order corresponding with this light illumination, and this first steering order is sent to the driver element in rotary many optical filter devices.
After driver element in rotary many optical filter devices receives the first steering order, by driving rotary many optical filter devices optical filter to be switched to the optical filter corresponding in target environments indicated by the first steering order, this optical filter can be called target optical filter in the present embodiment.Thus change by the mode changing optical filter the light intensity that camera lens incides imager, make imager after target optical filter regulates the light intensity under targeted environment, obtain the image under targeted environment.
In the embodiment of the present invention, provide a kind of system of image acquisition, image capture device obtains the light illumination data under targeted environment, first steering order corresponding according to light illumination data genaration, first steering order is used for optical filter to switch to target optical filter, obtains the image under targeted environment finally by target optical filter.The image under varying environment can be collected by said process, do not need the multiple images obtained by multiple image-generating unit under targeted environment, most suitable image is selected to export again, but switch optical filter along with environmental change, by target optical filter, the light intensity under targeted environment is regulated, thus get the image of more high-quality.Can workload be alleviated like this, reduce equipment cost, and be conducive to device miniaturization.
Refer to Fig. 2, Fig. 2 is another embodiment schematic diagram of system of image acquisition in the embodiment of the present invention, and this system comprises: light sensor 101, controller 102, rotary many optical filter devices 103 and imager 104;
Light sensor 101, for obtaining the light illumination data under targeted environment;
Controller 102, for first steering order corresponding according to light illumination data genaration;
Rotary many optical filter devices 103, for target optical filter corresponding under according to the first steering order optical filter being switched to targeted environment;
Imager 104, after regulating the light intensity under targeted environment at target optical filter, obtains the image under targeted environment;
Wherein, controller 102 specifically comprises the first control module 1021;
First control module 1021, for calculating the intensity of illumination under targeted environment according to light illumination data, and generates the first steering order corresponding to intensity of illumination.
In the present embodiment, controller comprises the first control module, and its effect mainly changes the wiring of main circuit or control circuit according to predefined procedure, and the resistance value changed in circuit controls the startup of motor, speed governing, braking and oppositely.First control module can be made up of programmed counting module, order register module, instruction decode module, sequence generation module and operation control module, and these modules can be specifically that circuit or chip are formed.Controller is the decision-making body of issue an order, namely completes the operation coordinated and command whole system.
First control module, according to light illumination data, can calculate the intensity of illumination under targeted environment, the first steering order that regeneration intensity of illumination is corresponding, and this first steering order is then for adjusting and the interlock circuit module in control system.
Secondly, in the embodiment of the present invention, specifically the first control module can be comprised in controller, its function mainly calculates the intensity of illumination under targeted environment according to light illumination data, and generate the first steering order corresponding to this intensity of illumination, so far, just target optical filter can be switched to by the first steering order.This programme is specifically introduced, with the feasibility of this enhanced scheme and operability how generating the first steering order.
Alternatively, on the basis of embodiment corresponding to above-mentioned Fig. 1 or Fig. 2, in another embodiment provided in the embodiment of the present invention, rotary many optical filter devices 103, specifically for receiving the first steering order that controller generates;
According to the first steering order rotating filtering sheet, and rotate target optical filter corresponding to targeted environment, wherein, the central point of target optical filter aligns with the central point of camera lens, and camera lens is for taking image.
In the present embodiment, the concrete mode of the target optical filter that rotary many optical filter devices are corresponding under optical filter being switched to targeted environment according to the first steering order can be, rotary many optical filter devices receive the first steering order that controller generates, and then according to the first steering order rotating filtering sheet, and rotate target optical filter corresponding to targeted environment, wherein, the central point of target optical filter aligns with the central point of camera lens, and this camera lens is used to take image.
Refer to shown in Fig. 3 to 5, embodiments provide a kind of rotary many optical filter devices, in rotary many optical filter devices, include servomotor 1, photoelectricity positioning switch 2, rotary type optical filter pallet 3, pilot hole 4, optical filter pallet turning axle 5 and optical filter mounting groove 6.
Wherein, servomotor refers to the engine controlling mechanical organ running in servo-drive system, is the indirect speed change gear of a kind of subsidy motor.Servomotor can make control rate, and positional precision is very accurate, voltage signal can be converted into torque and rotational speed with drived control object.Servo motor rotor rotating speed controls by input signal, and energy rapid reaction, in automatic control system, as executive component, and there is the characteristics such as electromechanical time constant is little, the linearity is high, pickup voltage, received electric signal can be converted to the angular displacement on motor reel or angular velocity output.Be divided into direct current and the large class of AC servomotor two, its principal feature is, when signal voltage is zero without rotation phenomenon, rotating speed is uniform descent along with the increase of torque.
Photoelectricity positioning switch utilizes detected material blocking or reflecting light beam, by synchronization loop gating circuit, thus the presence or absence of inspected object.Object is not limited to metal, and the object of all energy reflection rays all can be detected.Input current is converted to light signal injection by optoelectronic switch on transmitter, and receiver is again according to the power of light received or detect with or without to target object.
Rotary type optical filter pallet is the pallet with pilot hole, optical filter pallet turning axle and optical filter mounting groove, optical filter pallet turning axle can be rotated by the control of servomotor, thus drive rotary type optical filter pallet to rotate, and on rotary type optical filter pallet, have optical filter mounting groove, different optical filters can be installed in mounting groove, make rotary type optical filter pallet rotate target optical filter corresponding to targeted environment.
It should be noted that, the optical filter mounting groove in figure is four, and this is only a signal, in actual applications, can increase or reduce optical filter mounting groove as required, so place does not limit.
By the above-mentioned introduction to all parts, can recognize that the basic functional principle of rotary many optical filter devices is as follows: whether the light sent by photoelectricity positioning switch exists the position of rotation that reflection carrys out location tray in tray bottom.When the light that photoelectricity positioning switch sends has reflection, then servomotor rotates, and drives rotary type optical filter pallet to rotate.When pilot hole above rotary type optical filter pallet rotates to directly over photoelectricity positioning switch, the ght transmission that the pilot hole on rotary type optical filter pallet sends photoelectricity positioning switch out, cannot form reflection, therefore servomotor stops the rotation.Optical filter now in optical filter mounting groove aligns with optical center.
Again, in the embodiment of the present invention, specifically describe composition and the working method of rotary many optical filter devices, at rotary many optical filter devices, multiple optical filter can be installed, the optical filter changed above camera lens is rotated by driving servomotor, change camera lens with this and incide imager light intensity, thus reach the adaptive faculty of whole equipment to ambient light.The present invention program is made to have stronger adaptability in actual applications, meanwhile, the feasibility of lifting scheme.
Refer to Fig. 6, Fig. 6 is another embodiment schematic diagram of system of image acquisition in the embodiment of the present invention, and this system comprises: light sensor 101, controller 102, rotary many optical filter devices 103 and imager 104;
Light sensor 101, for obtaining the light illumination data under targeted environment;
Controller 102, for first steering order corresponding according to light illumination data genaration;
Rotary many optical filter devices 103, for target optical filter corresponding under according to the first steering order optical filter being switched to targeted environment;
Imager 104, after regulating the light intensity under targeted environment at target optical filter, obtains the image under targeted environment;
Wherein, controller 102 specifically comprises the first control module 1021;
First control module 1021, for calculating the intensity of illumination under targeted environment according to light illumination data, and generates the first steering order corresponding to intensity of illumination.
Second control module 1022, for calculating the intensity of illumination under targeted environment according to light illumination data, and generate the second steering order corresponding to intensity of illumination, the second steering order is for controlling light filling circuit.
In the present embodiment, controller comprises the first control module, first control module is according to light illumination data, the intensity of illumination under targeted environment can be calculated, the first steering order that regeneration intensity of illumination is corresponding, this first steering order is then for adjusting and the interlock circuit module in control system.Can also comprise the second control module, the second control module, equally according to light illumination data, can calculate the intensity of illumination under targeted environment, the second steering order that regeneration intensity of illumination is corresponding, and the second steering order is for controlling light filling circuit.
Be understandable that, its effect of the second control module mainly changes the wiring of main circuit or control circuit according to predefined procedure, and the resistance value changed in circuit controls the startup of motor, speed governing, braking and oppositely.The structure and fuction of the second control module and the first control module is similar, is the decision center of issue an order, completes the operation of coordination and command system.
Further, in the embodiment of the present invention, specifically can comprise the second control module in controller, its function mainly calculates the intensity of illumination under targeted environment according to light illumination data, and generating the second steering order corresponding to this intensity of illumination, the second steering order is for controlling light filling circuit.This programme is specifically introduced, with the feasibility of this enhanced scheme and operability how generating the second steering order.
Refer to Fig. 7, Fig. 7 is another embodiment schematic diagram of system of image acquisition in the embodiment of the present invention, and this system comprises: light sensor 101, controller 102, rotary many optical filter devices 103, imager 104, light filling circuit 105 and infrared lamp array 106;
Light sensor 101, for obtaining the light illumination data under targeted environment;
Controller 102, for first steering order corresponding according to light illumination data genaration;
Rotary many optical filter devices 103, for target optical filter corresponding under according to the first steering order optical filter being switched to targeted environment;
Imager 104, after regulating the light intensity under targeted environment at target optical filter, obtains the image under targeted environment;
Light filling circuit 105, for receiving the second steering order, and sends light intensity conditioning signal according to the second steering order to infrared lamp array 106;
Infrared lamp array 106, for according to the described light intensity conditioning signal received, regulates the luminosity of infrared lamp;
Wherein, controller 102 specifically comprises the first control module 1021;
First control module 1021, for calculating the intensity of illumination under targeted environment according to light illumination data, and generates the first steering order corresponding to intensity of illumination.
Second control module 1022, for calculating the intensity of illumination under targeted environment according to described light illumination data, and generate the second steering order corresponding to intensity of illumination, the second steering order is for controlling light filling circuit.
In the present embodiment, light filling circuit receives the second steering order that the second control module sends, infrared lamp array is controlled thus according to this second steering order, namely lose line strength conditioning signal to infrared lamp arrays biographies, make infrared lamp array can regulate the luminosity of infrared lamp according to light intensity conditioning signal.
Wherein, infrared lamp arrays row overcome the deficiency of common infrared lamp and array infrared lamp, its Heterosis exists, first, infrared lamp array is not by the restriction of distance, at any time according to adopting the method increasing and reduce module increase or reduce irradiation distance, and can irradiate than infrared lamp and the array infrared lamp distance that even laser infrared lamp is farther; The second, the restriction of infrared lamp array not exposure angle, oneself can regulate the angle of infrared lamp array at any time as required, maximumly to 360 degree or can realize sphere irradiation; 3rd, infrared lamp array completely solves waterproof problem, there will not be the quality problems because the reasons such as water inlet cause completely; 4th, the restriction of infrared lamp array not exposure Distance geometry irradiating angle, arbitraryly can at will expand; 5th, infrared lamp array by the restriction of mounting means, ceiling, wall, buried etc. can; 6th, infrared lamp array is by the restriction of installation environment, on the ground, in the air, buried, waits environment all unrestricted under water
Further, in the embodiment of the present invention, light filling circuit and infrared lamp array in the system of image acquisition, can also be increased.Light filling circuit receives the second steering order, and send light intensity conditioning signal according to the second steering order to infrared lamp array, make infrared lamp array can according to the described light intensity conditioning signal received, regulate the luminosity of infrared lamp, and then make the system photographs of whole image acquisition to image clearly, the working environment of different light rays brightness is adapted to this working method.
Above-described embodiment is described from the system perspective of image acquisition, the method from figure collection is specifically introduced below, refers to Fig. 8, and the embodiment of the method for a kind of image acquisition that the embodiment of the present invention provides comprises:
201, the light illumination data under targeted environment are obtained;
In the present embodiment, obtain the light illumination data under targeted environment by light sensor.Light sensor obtains the light illumination data under targeted environment, be light sensor get current environment under light illumination data, and by the light illumination data collected to carry out environmental monitoring.
Light illumination data under targeted environment can be, such as, the illumination on fine day direct sunlight ground can reach 100,000 luxs, the illumination at fine day backlight place is about 10,000 luxs, the cloudy day illumination of outdoor can reach 3,000 luxs, under the environment of half indoor half outdoor of fine day, illuminance still can reach 3,000 luxs.
202, the first corresponding according to light illumination data genaration steering order;
In the present embodiment, light illumination data can be sent to controller by signal by light sensor, controller is to the light illumination data analysis process received, calculate the light intensity under the targeted environment residing for current device thus, be the light illumination calculated by light illumination data under targeted environment.And then generate first steering order corresponding with this light illumination, and this first steering order is sent to the driver element in rotary many optical filter devices.
203, target optical filter corresponding under optical filter being switched to targeted environment according to the first steering order;
In the present embodiment, after driver element in rotary many optical filter devices receives the first steering order, by driving rotary many optical filter devices optical filter to be switched to the optical filter corresponding in target environments indicated by the first steering order, this optical filter can be called target optical filter in the present embodiment.
204, after target optical filter regulates the light intensity under targeted environment, the image under targeted environment is obtained.
In the present embodiment, change by the mode changing optical filter the light intensity that camera lens incides imager, make imager after target optical filter regulates the light intensity under targeted environment, obtain the image under targeted environment.
In the embodiment of the present invention, provide a kind of method of image acquisition, image capture device obtains the light illumination data under targeted environment, first steering order corresponding according to light illumination data genaration, first steering order is used for optical filter to switch to target optical filter, obtains the image under targeted environment finally by target optical filter.The image under varying environment can be collected by said process, do not need the multiple images obtained by multiple image-generating unit under targeted environment, most suitable image is selected to export again, but switch optical filter along with environmental change, by target optical filter, the light intensity under targeted environment is regulated, thus get the image of more high-quality.Can workload be alleviated like this, reduce equipment cost, and be conducive to device miniaturization.
Alternatively, on the basis of embodiment corresponding to above-mentioned Fig. 8, in method first embodiment of the image acquisition that the embodiment of the present invention provides, first steering order corresponding according to light illumination data genaration, can comprise:
Calculate the intensity of illumination under targeted environment according to light illumination data, and generate the first steering order corresponding to intensity of illumination.
In the present embodiment, controller can be corresponding according to light illumination data genaration the first steering order, wherein, controller mainly changes the wiring of main circuit or control circuit according to predefined procedure, and the resistance value changed in circuit controls the startup of motor, speed governing, braking and oppositely.First control module can be made up of programmed counting module, order register module, instruction decode module, sequence generation module and operation control module, and these modules can be specifically that circuit or chip are formed.Controller is the decision-making body of issue an order, namely completes the operation coordinated and command whole system.
According to light illumination data, can calculate the intensity of illumination under targeted environment, the first steering order that regeneration intensity of illumination is corresponding, this first steering order is then for adjusting and the interlock circuit module in control system.
Secondly, in the embodiment of the present invention, specifically the first control module can be comprised in controller, its function mainly calculates the intensity of illumination under targeted environment according to light illumination data, and generate the first steering order corresponding to this intensity of illumination, so far, just target optical filter can be switched to by the first steering order.This programme is specifically introduced, with the feasibility of this enhanced scheme and operability how generating the first steering order.
Alternatively, on the basis of first embodiment corresponding to above-mentioned Fig. 8 and Fig. 8, in method second embodiment of the image acquisition that the embodiment of the present invention provides, target optical filter corresponding under optical filter being switched to targeted environment according to the first steering order, can comprise:
Receive the first steering order that controller generates;
According to the first steering order rotating filtering sheet, and rotate target optical filter corresponding to targeted environment, wherein, the central point of target optical filter aligns with the central point of camera lens, and camera lens is for taking image.
In the present embodiment, the concrete mode of the target optical filter that rotary many optical filter devices are corresponding under optical filter being switched to targeted environment according to the first steering order can be, rotary many optical filter devices receive the first steering order that controller generates, and then according to the first steering order rotating filtering sheet, and rotate target optical filter corresponding to targeted environment, wherein, the central point of target optical filter aligns with the central point of camera lens, and this camera lens is used to take image.Camera lens is the optics generating image, is made up of multi-disc lens.
Again, in the embodiment of the present invention, specifically describe composition and the working method of rotary many optical filter devices, at rotary many optical filter devices, multiple optical filter can be installed, the optical filter changed above camera lens is rotated by driving servomotor, change camera lens with this and incide imager light intensity, thus reach the adaptive faculty of whole equipment to ambient light.The present invention program is made to have stronger adaptability in actual applications, meanwhile, the feasibility of lifting scheme.
Alternatively, on the basis of second embodiment corresponding to above-mentioned Fig. 8, in method the 3rd embodiment of the image acquisition that the embodiment of the present invention provides, after obtaining the light illumination data under targeted environment, can also comprise:
Calculate the intensity of illumination under targeted environment according to light illumination data, and generate the second steering order corresponding to intensity of illumination, the second steering order is for controlling light filling circuit.
In the present embodiment, both according to light illumination data, can calculate the intensity of illumination under targeted environment, the first steering order that regeneration intensity of illumination is corresponding in controller, this first steering order is then for adjusting and the interlock circuit module in control system.According to light illumination data, can also can calculate the intensity of illumination under targeted environment, the second steering order that regeneration intensity of illumination is corresponding, the second steering order is for controlling light filling circuit.
Further, in the embodiment of the present invention, specifically can comprise the second control module in controller, its function mainly calculates the intensity of illumination under targeted environment according to light illumination data, and generating the second steering order corresponding to this intensity of illumination, the second steering order is for controlling light filling circuit.This programme is specifically introduced, with the feasibility of this enhanced scheme and operability how generating the second steering order.
Alternatively, on the basis of the 3rd embodiment corresponding to above-mentioned Fig. 8, in method the 4th embodiment of the image acquisition that the embodiment of the present invention provides, the intensity of illumination under targeted environment is calculated according to light illumination data, and after generating the second steering order corresponding to intensity of illumination, can also comprise:
Receive the second steering order, and send light intensity conditioning signal according to the second steering order to infrared lamp array;
According to the light intensity conditioning signal received, regulate the luminosity of infrared lamp.
In the present embodiment, light filling circuit receives the second steering order that the second control module sends, infrared lamp array is controlled thus according to this second steering order, namely lose line strength conditioning signal to infrared lamp arrays biographies, make infrared lamp array can regulate the luminosity of infrared lamp according to light intensity conditioning signal.
Further, in the embodiment of the present invention, light filling circuit and infrared lamp array in the system of image acquisition, can also be increased.Light filling circuit receives the second steering order, and send light intensity conditioning signal according to the second steering order to infrared lamp array, make infrared lamp array can according to the described light intensity conditioning signal received, regulate the luminosity of infrared lamp, and then make the system photographs of whole image acquisition to image clearly, the working environment of different light rays brightness is adapted to this working method.
For ease of understanding, be described in detail with the method for an embody rule scene to image acquisition a kind of in the present invention below, refer to Fig. 9, Fig. 9 is system schematic diagram of image acquisition in application scenarios of the present invention, is specially:
The present invention designs a kind of image capturing system with adaptive environment light intensity, this system specifically includes ambient light detecting unit 301, control module 302, dynamically light filling regulating circuit 303, infrared lamp array 304, rotary many optical filter devices Drive and Control Circuit 305, rotary many optical filter devices 306, central processing unit (English full name: CentralProcessingUnit, english abbreviation: CPU) 307 and image-generating unit 308 form.
During work, ambient light detecting unit 301 detects the illuminance of current environment, the numerical value detected is sent to control module 302 and calculates, to have calculated the light illumination of current place environment.Control module 302 controls dynamic light filling regulating circuit 303, and controls infrared lamp arrays column unit 304 by dynamic light filling regulating circuit 303 and reach default light intensity for image-generating unit 308 and provide required initiative recognition light intensity.Synchronous control unit 302 controls rotary many optical filter devices driving circuit 305 and controls to rotate many optical filter devices 306, optical filter position corresponding under making this device rotate to this ambient light.And wake CPU307 up by control module 302, control image-generating unit 308 by CPU307 and take image.
Along with the change of ambient light, the illumination of the light of infrared lamp array can regulate accordingly, and the transmitance of optical filter is also along with also corresponding adjustment is done in the change of ambient light simultaneously.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (English full name: Read-OnlyMemory, english abbreviation: ROM), random access memory (English full name: RandomAccessMemory, english abbreviation: RAM), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a system for image acquisition, is characterized in that, comprising: light sensor, controller, rotary many optical filter devices and imager;
Described light sensor, for obtaining the light illumination data under targeted environment;
Described controller, for first steering order corresponding according to described light illumination data genaration;
Described rotary many optical filter devices, for target optical filter corresponding under according to described first steering order optical filter being switched to described targeted environment;
Described imager, after regulating the light intensity under described targeted environment at described target optical filter, obtains the image under described targeted environment.
2. system according to claim 1, is characterized in that, described controller specifically comprises the first control module;
Described first control module, for calculating the intensity of illumination under described targeted environment according to described light illumination data, and generates the first steering order corresponding to described intensity of illumination.
3. system according to claim 1 and 2, is characterized in that,
Described rotary many optical filter devices, specifically for receiving described first steering order that described controller generates;
Rotate described optical filter according to described first steering order, and rotate target optical filter corresponding to described targeted environment, wherein, the described central point of target optical filter aligns with the central point of camera lens, and described camera lens is for taking image.
4. system according to claim 3, is characterized in that, described controller specifically comprises the second control module;
Described second control module, for calculating the intensity of illumination under described targeted environment according to described light illumination data, and generate the second steering order corresponding to described intensity of illumination, described second steering order is for controlling light filling circuit.
5. system according to claim 4, is characterized in that, described system also comprises described light filling circuit and infrared lamp array;
Described light filling circuit, for receiving described second steering order, and sends light intensity conditioning signal according to described second steering order to described infrared lamp array;
Described infrared lamp array, for according to the described light intensity conditioning signal received, regulates the luminosity of infrared lamp.
6. a method for image acquisition, is characterized in that, comprising:
Obtain the light illumination data under targeted environment;
First steering order corresponding according to described light illumination data genaration;
Target optical filter corresponding under optical filter being switched to described targeted environment according to described first steering order;
After described target optical filter regulates the light intensity under described targeted environment, obtain the image under described targeted environment.
7. method according to claim 6, is characterized in that, described first steering order corresponding according to described light illumination data genaration, comprising:
Calculate the intensity of illumination under described targeted environment according to described light illumination data, and generate the first steering order corresponding to described intensity of illumination.
8. the method according to claim 6 or 7, is characterized in that, described optical filter switched to described targeted environment according to described first steering order under corresponding target optical filter, comprising:
Receive described first steering order that described controller generates;
Rotate described optical filter according to described first steering order, and rotate target optical filter corresponding to described targeted environment, wherein, the described central point of target optical filter aligns with the central point of camera lens, and described camera lens is for taking image.
9. method according to claim 8, is characterized in that, after the light illumination data under described acquisition targeted environment, described method also comprises:
Calculate the intensity of illumination under described targeted environment according to described light illumination data, and generate the second steering order corresponding to described intensity of illumination, described second steering order is for controlling light filling circuit.
10. method according to claim 9, is characterized in that, the described intensity of illumination calculated according to described light illumination data under described targeted environment, and after generating the second steering order corresponding to described intensity of illumination, described method also comprises:
Receive described second steering order, and send light intensity conditioning signal according to described second steering order to described infrared lamp array;
According to the described light intensity conditioning signal received, regulate the luminosity of infrared lamp.
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