CN104469123A - A method for supplementing light and an image collecting device - Google Patents
A method for supplementing light and an image collecting device Download PDFInfo
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- CN104469123A CN104469123A CN201310424381.1A CN201310424381A CN104469123A CN 104469123 A CN104469123 A CN 104469123A CN 201310424381 A CN201310424381 A CN 201310424381A CN 104469123 A CN104469123 A CN 104469123A
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Abstract
The invention discloses a method for supplementing light and an image collecting device for solving the following technical problem: an image collecting device in the prior art cannot adjust an intensity of light supplementing, with respect to different photographed objects, such that there is a poor effect of supplementing light for the photographed object. The method for supplementing light is applied to the image collecting device which is connected to a light supplementing device. The method includes obtaining a first distance parameter between the photographed object in a first area and the image collecting device when the image collecting device collects a first image of the first area; determining a first driving current value in accordance with the first distance parameter based on a correspondence between the distance parameter and the driving current value of the light supplementing device; and driving the light supplementing device by the first driving current to supplement light to the photographed object.
Description
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of method of light filling and a kind of image collecting device.
Background technology
Along with the development of computer technology, increasing electronic equipment appears in the life of people, and such as, functional mobile phone, smart mobile phone, panel computer, intelligent television, digital camera etc., bringing to the life of people can be more and more convenient.
At present, in order to meet the demand of people, for image collecting device, as camera, the requirement of the shoot function of digital camera is increased day by day.For smart mobile phone, from being provided with camera, till now on camera side, also a light compensating apparatus can be set, being generally photoflash lamp, making user when taking pictures, can to subject light filling, to reach better shooting effect.General, when user is under darker environment, if to a flower shooting, in order to take the shape profile of clear flower, user can manually open photoflash lamp function, like this, after to flower focusing, after user presses " shooting " button, smart mobile phone according to this operation of user, will drive photoflash lamp with the drive current that current value is certain, make it glisten, meanwhile, mobile phone controls camera and takes, and so just takes the image of the flower after a light filling.
But present inventor is in the process realizing technical scheme in the embodiment of the present invention, find that above-mentioned technology at least exists following technical problem:
Because photoflash lamp is driven by the drive current that current value is certain, so, no matter subject and image collecting device far and near, mobile phone all can drive photoflash lamp with above-mentioned drive current, just likely occur for the subject distant with image collecting device, illumination light intensity on subject of possible photoflash lamp is excessively weak, even subject is not played to the effect of light filling, so, the problem that the image come still can exist light filling deficiency is taken; Corresponding, for the subject nearer with image collecting device, the light intensity that the photoflash lamp driven with above-mentioned drive current impinges upon on subject is excessively strong, so, take the image come and still can there is the excessive problem of light filling, that is, there is image collecting device cannot for different subject, regulate the light filling intensity of light compensating apparatus, thus cause the technical problem taking the image light filling weak effect come to subject.
Summary of the invention
The invention provides a kind of method of light filling and a kind of image collecting device, cannot for different subjects in order to solve the image collecting device existed in prior art, regulate the light filling intensity of light compensating apparatus, thus cause the technical problem of the light filling weak effect to subject.
On the one hand, the present invention is by an embodiment of the application, a kind of method of light filling is provided, be applied to an image collecting device, described image collecting device is connected with a light compensating apparatus, described method comprises: when the first image of described image acquisition device first area, obtains the first distance parameter in described first area between subject and described image collecting device; Based on the corresponding relation between distance parameter and the driving current value of described light compensating apparatus, according to described first distance parameter, determine the first driving current value; Described light compensating apparatus is driven, to described subject light filling with described first drive current.
Optionally, be set up at described image collector and be also arranged with an infrared transmitting device and an infrared ray sensor in parallel; The first distance parameter in the described first area of described acquisition between subject and described image collecting device, specifically comprises: obtain the first instruction; Perform described first instruction, in the first moment, control described infrared transmitting device and send the first infrared ray; In the second moment, obtain the second infrared ray received by described infrared ray sensor, wherein, described second infrared ray is the infrared ray being reflected described first infrared ray generation by described subject; Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
Optionally, be set up at described image collector and be also arranged with a ultrasonic transmission device and a ultrasonic sensor in parallel; The first distance parameter in the described first area of described acquisition between subject and described image collecting device, specifically comprises: obtain the first instruction; Perform described first instruction, in the first moment, control described ultrasonic transmission device and send the first ultrasonic wave; In the second moment, obtain the second ultrasonic wave received by described ultrasonic sensor, wherein, described second ultrasonic wave is the ultrasonic wave being reflected described first ultrasonic wave generation by described subject; Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
Optionally, the first distance parameter in the described first area of described acquisition between subject and described image collecting device, is specially: obtain a focusing instruction; Perform described focusing instruction, control the focusing of described image collecting device; Based on the second distance parameter between the photo-sensitive cell in described lens and described image collecting device, obtain described first distance parameter.
Optionally, in described image collecting device, store the first corresponding relation of distance parameter and driving current value, the second corresponding relation of spectral characteristic parameter and driving current value, and the 3rd corresponding relation between the weighted value of distance parameter and spectral characteristic parameter; Described according to described first distance parameter, determine the first driving current value corresponding to described first distance parameter, specifically comprise: based on described first corresponding relation, according to described first distance parameter, obtain the second driving current value; Based on described second corresponding relation, according to the first spectral characteristic parameter, obtain the 3rd driving current value; Based on described 3rd corresponding relation, according to described first distance parameter, obtain the first weighted value between described second driving current value and described 3rd driving current value; Based on described first weighted value, determine described first driving current value.
Optionally, after the first distance parameter in the described first area of described acquisition between subject and described image collecting device, described method also comprises: based on described first distance parameter, controls the focusing of described image collecting device.
On the other hand, the present invention provides a kind of image collecting device by another embodiment of the application, and described image collecting device is connected with a light compensating apparatus, and described image collecting device comprises: circuit board; Memory module, is arranged on described circuit board, for store distance parameter and described light compensating apparatus driving current value between corresponding relation; Control module, be arranged on described circuit board, be connected with described memory module and described light compensating apparatus respectively, for when the first image of described image acquisition device first area, obtain the first distance parameter in described first area between subject and described image collecting device; Based on the corresponding relation between distance parameter and the driving current value of described light compensating apparatus, according to described first distance parameter, determine the first driving current value; Described light compensating apparatus is driven, to described subject light filling with described first drive current.
Optionally, described control module, specifically comprises: obtain module, for when the first image of described image acquisition device first area, obtain the first distance parameter in described first area between subject and described image collecting device; Determination module, for based on the corresponding relation between distance parameter and the driving current value of described light compensating apparatus, according to described first distance parameter, determines the first driving current value corresponding to described first distance parameter; Driver module, for driving described light compensating apparatus with described first drive current, to described subject light filling.
Optionally, the described image collecting device infrared ray sensor that also comprises an infrared transmitting device and be arranged in parallel with described infrared transmitting device; Described acquisition module, specifically for: obtain the first instruction; Perform described first instruction, in the first moment, control described infrared transmitting device and send the first infrared ray; In the second moment, obtain the second infrared ray received by described infrared ray sensor, wherein, described second infrared ray is the infrared ray being reflected described first infrared ray generation by described subject; Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
Optionally, the described image collecting device ultrasonic sensor that also comprises a ultrasonic transmission device and be arranged in parallel with described ultrasonic transmission device; Described acquisition module, specifically for: obtain the first instruction; Perform described first instruction, in the first moment, control described ultrasonic transmission device and send the first ultrasonic wave; In the second moment, obtain the second ultrasonic wave received by described ultrasonic sensor, wherein, described second ultrasonic wave is the ultrasonic wave being reflected described first ultrasonic wave generation by described subject; Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
Optionally, described acquisition module, specifically for: obtain a focusing instruction; Perform described focusing instruction, control the focusing of described image collecting device; Based on the second distance parameter between the photo-sensitive cell in described lens and described image collecting device, obtain described first distance parameter.
Optionally, in described memory module, store the first corresponding relation of distance parameter and driving current value, the second corresponding relation of spectral characteristic parameter and driving current value, and the 3rd corresponding relation between the weighted value of distance parameter and spectral characteristic parameter; Described determination module, specifically for: based on described first corresponding relation, according to described first distance parameter, obtain the second driving current value; Based on described second corresponding relation, according to the first spectral characteristic parameter, obtain the 3rd driving current value; Based on described 3rd corresponding relation, according to described first distance parameter, obtain the first weighted value between described second driving current value and described 3rd driving current value; Based on described first weighted value, determine described first driving current value.
Optionally, described image collecting device also comprises: Focusing module, is connected with described control module, for based on described first distance parameter, controls the focusing of described image collecting device.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
1, due to distance parameter is associated with the driving current value of light compensating apparatus, so, when the first image of image acquisition device first area, after obtaining the first distance parameter in first area between subject and image collecting device, can based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determine the first driving current value, and then drive light compensating apparatus with the first drive current, to subject light filling, that is, first drive current is determined according to the first distance parameter, namely according between subject and image collecting device distance determine, would not occur for the situation from the subject under-exposure away from image collecting device like this, also there will not be for the situation from the subject exposure transition close to image collecting device, so, the image collecting device efficiently solving prior art existence cannot for different subjects, regulate the light filling intensity of light compensating apparatus, thus cause the technical problem of the light filling weak effect to subject, and then improve the light filling effect of image collecting device in the process of collection first image, provide good Consumer's Experience.
2, due in the driving current value based on distance parameter and light compensating apparatus, according to the first distance parameter, after determining the second driving current value that the first distance parameter is corresponding, additionally use the spectral characteristic parameter of light compensating apparatus, as the characterisitic parameters such as colour temperature are revised the second driving current value, to obtain the first drive current, so, when taking pictures, the driving current value that image collecting device can more accurately select the light filling degree of applicable subject corresponding, further increases the light filling effect of image collecting device in the process of collection first image.
Accompanying drawing explanation
Fig. 1 is the structural representation of the image collecting device in one embodiment of the invention;
Fig. 2 is the method flow diagram of the light filling in one embodiment of the invention;
Fig. 3 is the structural representation of the image collecting device in another embodiment of the present invention.
Embodiment
The embodiment of the present application is by providing a kind of method of light filling and a kind of image collecting device, solving the image collecting device existed in prior art cannot for different subject, regulate the light filling intensity of light compensating apparatus, thus cause the technical problem of the light filling weak effect to subject.
Technical scheme in the embodiment of the present application be solve the image collecting device of above-mentioned existence cannot for different subjects, regulate the light filling intensity of light compensating apparatus, thus cause the problem of the light filling weak effect to subject, general thought is as follows:
By distance parameter is associated with the driving current value of light compensating apparatus, so, when the first image of image acquisition device first area, after obtaining the first distance parameter in first area between subject and image collecting device, can based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determine the first driving current value, and then drive light compensating apparatus with the first drive current, to subject light filling, that is, first drive current is determined according to the first distance parameter, namely according between subject and image collecting device distance determine, would not occur for the situation from the subject under-exposure away from image collecting device like this, also there will not be for the situation from the subject exposure transition close to image collecting device, so, the image collecting device efficiently solving prior art existence cannot for different subjects, regulate the light filling intensity of light compensating apparatus, thus cause the technical problem of the light filling weak effect to subject, and then improve the light filling effect of image collecting device in the process of collection first image, provide good Consumer's Experience.
Below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical solution of the present invention, instead of the restriction to technical solution of the present invention, when not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
On the one hand, the present invention is by an embodiment of the application, and provide a kind of method of light filling, the method is applied to an image collecting device, and this image collecting device is connected with a light compensating apparatus.As shown in Figure 1, image collecting device comprises: circuit board 10, arranges memory module 20 on the circuit board 10, and the control module 30 be connected with memory module 20, and control module 30 is also arranged on the circuit board 10.
In actual applications, image collecting device can be arranged on an electronic equipment, such as, smart mobile phone, panel computer, notebook computers etc. certainly, can also be independently electronic equipment, such as an external camera, portable digital camera, slr camera etc.; Light compensating apparatus can be one or more LED photoflash lamp, and the application does not do concrete restriction.
So, as shown in Figure 2, the method comprises:
S101: when the first image of image acquisition device first area, obtains the first distance parameter between subject and image collecting device in first area;
S102: based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determines the first driving current value corresponding to the first distance parameter;
S103: drive light compensating apparatus, to subject light filling with the first drive current.
Below for the camera on smart mobile phone, such scheme is described.
After photograph application program in smart phone user starting hand-set, be arranged on the image collecting device on mobile phone, i.e. electric-opening on camera, at this moment, user aims at the region wanting to take in view-finder, i.e. first area, now, perform S101, namely obtain the first distance parameter in first area between subject and image collecting device.
Specifically, following three kinds of execution modes can be adopted, obtain the first distance parameter.
The first execution mode, be set up at image collector and be arranged with an infrared transmitting device and an infrared ray sensor in parallel, " be arrangeding in parallel " mentioned here just refers to that the first infrared ray sent by infrared transmitting device is parallel with the second infrared ray that infrared ray sensor receives in space, and does not refer to infrared generator and infrared ray sensor to be set up at image collector and be arranged side by side.
So, now, S101 just can comprise: obtain the first instruction; Perform the first instruction, in the first moment, control infrared transmitting device and send the first infrared ray; In the second moment, obtain the second infrared ray received by infrared ray sensor, wherein, the second infrared ray is the infrared ray being reflected the first infrared ray generation by subject; Based on the very first time interval between the first moment and the second moment, obtain the first distance parameter.
Above-mentioned first instruction can the instruction that generates according to user's this operation of " pressing shutter " or " tapping focusing area " this operation of image collecting device, and this instruction is sent to control module 30, this first instruction can be performed and can send the first infrared ray at the first moment T1 control infrared transmitting device, then, first infrared ray is propagated towards subject direction, and finally arrive subject, then by this reflections off objects, namely propagate towards image collecting device direction, infrared ray sensor is arrived at the second moment T2, now, the second infrared ray that infrared ray sensor receives is the infrared ray that above-mentioned first infrared ray is reflected by subject, certainly, also likely comprise the infrared ray that some shooting environmental or subject send, the application is not specifically limited.Finally, control module 30 is according to the very first time interval between T1 and T2, and ultrared propagation velocity, can calculate the first distance parameter, and the distance value namely between subject and image collecting device can be called " object distance ".
Below in one or more embodiment said " be arrangeding in parallel ", " object distance " respectively with above-mentioned " be arrangeding in parallel ", " object distance " synonym, just repeated no longer one by one.
The second execution mode, similar to the first execution mode, be set up at image collector and be also arranged with a ultrasonic transmission device and a ultrasonic sensor in parallel.
Now, S101 can comprise: obtain the first instruction; Perform the first instruction, in the first moment, control ultrasonic transmission device and send the first ultrasonic wave; In the second moment, obtain the second ultrasonic wave received by ultrasonic sensor, wherein, the second ultrasonic wave is the ultrasonic wave being reflected the first ultrasonic wave generation by subject; Based on the very first time interval between the first moment and the second moment, obtain the first distance parameter.
Specifically, the first instruction that image collecting device will generate according to user's this operation of " pressing shutter " or " tapping focusing area " this operation sends to control module 30, this module performs the first instruction, at the first moment T1, control ultrasonic transmission device and send the first ultrasonic wave, this row ultrasonic wave is towards subject direction, and finally arrive subject, then be reflected back, namely propagate towards image collecting device direction, at the second moment T2, ultrasonic sensor receives the second ultrasonic wave, namely the first ultrasonic wave reflected by subject, finally, control module 30 is according to the very first time interval between the first moment T1 and the second moment T2, and hyperacoustic propagation velocity, the first distance parameter can be obtained, the i.e. value of object distance.
The third execution mode, under this embodiment, without the need to increasing the module being specifically designed to acquisition first distance parameter on the hardware of image collecting device, decreasing the cost of image collecting device, and reducing the structure complexity of image collecting device.
So, now, S101 can comprise: first obtains the first distance parameter in first area between subject and image collecting device, is specially: obtain a focusing instruction; Perform focusing instruction, control image collecting device focusing; Based on the second distance parameter between the photo-sensitive cell in lens and image collecting device, obtain the first distance parameter.
Before implementing at the third execution mode, image collecting device is focused, so, control module 30 can obtain a focusing instruction, and performs this instruction, controls image collecting device focusing, namely the lens controlled in image collecting device are subjected to displacement, make subject imaging become clear, focusing mentioned here, specifically refers to auto-focusing, certainly, if when the method is applied to the devices such as digital camera, focusing can also be manual focus, also mixes focusing.Then, control module 30 according to the position of lens, can calculate the second distance parameter of lens to photo-sensitive cell, namely the distance between subject imaging and lens, namely " image distance ", then according to the imaging formula of lens, i.e. 1/f=1/u+1/v, wherein, f is the focal length of lens; U is object distance, i.e. the distance of object distance optical center of lens; V is image distance, be the later image distance of imaging from the distance of optical center of lens, calculate the first distance parameter, namely object distance.
Certainly, in actual applications, except above-mentioned three kinds of performances, can also have multiple performance to obtain the first distance parameter, the application is not specifically limited.
In another embodiment, except the third execution mode above-mentioned, after S101, the method also comprises: based on the first distance parameter, controls image collecting device focusing.Namely, when image collecting device is not also focused, after obtaining the first distance parameter, image collecting device can carry out auto-focusing based on object distance.
After acquisition first distance parameter, perform S102, that is: based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determine the first driving current value corresponding to the first distance parameter.
Specifically, in memory module 20, store the corresponding relation of distance parameter and driving current value, as shown in table 1 below, control module 30 can find the first driving current value corresponding to the first distance parameter in Table 1 according to the first distance parameter.Such as, when the first distance parameter is 1.2m, according to table 1, the first corresponding driving current value is 1A; When the first distance parameter is 1m, according to table 1, the first corresponding driving current value is 3A, by that analogy.Certainly, the corresponding relation between distance parameter and driving current value can also be preserved with other form, and is not limited to above-mentioned value, and those skilled in the art can according to actual conditions sets itself, and the application is not specifically limited.
Table 1
| Distance parameter (unit: m) | Driving current value (unit: A) |
| 0～0.5 | 1 |
| 0.5～1.5 | 3 |
| 1.5～2 | 6 |
Data in above-mentioned table 1 all have great many of experiments to obtain, light compensating apparatus used in an experiment is the device of same model, in actual applications, due to the difference of experimental situation and experiment equipment, the experimental data obtained also can be different, that is, the data in above-mentioned table 1 can change according to actual conditions, and the application is not specifically limited.
In another enforcement of S102, due to light compensating apparatus own hardware structure, when light compensating apparatus is with large driven current density, just there will be colour cast, in the light that namely light compensating apparatus sends, shared by the light of certain color, component is stronger.Such as, the LED photoflash lamp of the fluorescent material design of blue LED die+Huang, when this photoflash lamp is with big current, as 10A drive time, in the white light that photoflash lamp sends, blue component will occupy major part, and then make image acquisition device to the first image produce blue colour cast, so, in order to reach better light filling effect, consider more multipair in the influential factor of light filling, in memory module 20, the spectral characteristic parameter of the light that the light compensating apparatus under different driving current value drives sends can also be stored, as color temperature value.
Now, in memory module 20 except storing the first corresponding relation of distance parameter and driving current value, also store the second corresponding relation of spectral characteristic parameter and driving current value, and the weighted value of distance parameter and spectral characteristic parameter, as the weighted value of colour temperature and brightness, between the 3rd corresponding relation.
Above-mentioned first corresponding relation, the second corresponding relation and the 3rd corresponding relation are all obtained by great many of experiments, and under varying experimental conditions, those skilled in the art can determine above-mentioned corresponding relation according to actual experiment situation, and the application is not specifically limited.
So, S102 can comprise: based on the first corresponding relation, according to the first distance parameter, obtains the second driving current value; Based on the second corresponding relation, according to the first spectral characteristic parameter, obtain the 3rd driving current value; Based on the 3rd corresponding relation, according to the first distance parameter, obtain the first weighted value between the second driving current value and the 3rd driving current value; Based on the first weighted value, determine the first driving current value.
Specifically, when control module 30 finds the driving current value of corresponding first distance parameter according to the first corresponding relation, namely after the second driving current value, control module 30 continues root second corresponding relation, obtain and the first spectral characteristic parameter, the 3rd driving current value that the value as colour temperature is corresponding.Certainly, in actual applications, the value of colour temperature, namely the first spectral characteristic parameter can be manually arranged by user, also can by image capturing system based under different screening-modes, for the different requirements of colour temperature, and pre-set, the application does not do concrete restriction.If, when colour temperature value is 4500k, namely when light is cold white light, think that the colour temperature of the first image is best, so, according to the value of colour temperature, control module 30 just can find corresponding driving current value, the i.e. value of the 3rd driving current value, as 1.4A, now, because the second driving current value and the 3rd driving current value can characterize brightness and colour temperature two spectral characteristic parameters respectively, so, according to the first distance parameter and the 3rd corresponding relation, control module 30 obtains the first weighted value between the second driving current value and the 3rd driving current value, and according to this weighted value, determine a driving current value, namely the first driving current value, such as, the value of the first distance parameter is 1m, table 1 in correspondence, second driving current value is just 3A, now, according to the 3rd corresponding relation, obtain the weighted value 2/3 of the second driving current value and the 3rd driving current value, namely the second driving current value accounts for 40%, 3rd driving current value accounts for 60%, then, can obtain the first driving current value is 3 × 40%+1.4 × 60%=2.04A.Now, the light compensating apparatus driven with the first driving current value can send the light taking into account brightness and colour temperature, the first clear picture that subject is taken out and color is suitable.
In actual applications, about the concrete value of the weighted value of the spectral characteristic parameter in the 3rd corresponding relation, due to different screening-mode, and different object distances is different for the requirement of colour temperature and brightness, those skilled in the art can sets itself according to actual needs, and the application is not specifically limited.
Finally, perform S103, that is: drive light compensating apparatus, to subject light filling with the first drive current.
So far, image collecting device just completes according to different object distances, have found the process of the driving current value of the light compensating apparatus matched, and makes the light compensating apparatus driven with this current value can reach good light filling effect.
Seen from the above description, due to distance parameter is associated with the driving current value of light compensating apparatus, so, when the first image of image acquisition device first area, after obtaining the first distance parameter in first area between subject and image collecting device, can based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determine the first driving current value, and then drive light compensating apparatus with the first drive current, to subject light filling, that is, first drive current is determined according to the first distance parameter, namely according between subject and image collecting device distance determine, would not occur for the situation from the subject under-exposure away from image collecting device like this, also there will not be for the situation from the subject exposure transition close to image collecting device, so, improve the light filling effect of image collecting device in the process of collection first image, provide good Consumer's Experience, further, due in the driving current value based on distance parameter and light compensating apparatus, according to the first distance parameter, after determining the second driving current value that the first distance parameter is corresponding, additionally use the spectral characteristic parameter of light compensating apparatus, as the characterisitic parameters such as colour temperature are revised the second driving current value, to obtain the first drive current, so, when taking pictures, the driving current value that image collecting device can more accurately select the light filling degree of applicable subject corresponding, further increase the light filling effect of image collecting device in the process of collection first image.
On the other hand, based on same inventive concept, the present invention provides a kind of image collecting device by another embodiment of the application, and this image collecting device is connected with a light compensating apparatus, and as shown in Figure 1, this image collecting device comprises: circuit board 10; Memory module 20, is arranged on the circuit board 10, for storing the corresponding relation between distance parameter and the driving current value of light compensating apparatus; Control module 30, arrange on the circuit board 10, be connected with memory module 20 and light compensating apparatus respectively, for when the first image of image acquisition device first area, obtain the first distance parameter between subject and image collecting device in first area; Based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determine the first driving current value corresponding to the first distance parameter; Light compensating apparatus is driven, to subject light filling with the first drive current.
In actual applications, image collecting device can be arranged on an electronic equipment, such as, smart mobile phone, panel computer, notebook computers etc. certainly, can also be independently electronic equipment, such as an external camera, portable digital camera, slr camera etc.; Light compensating apparatus can be one or more LED photoflash lamp, and the application does not do concrete restriction.
Further, as shown in Figure 3, control module 30, specifically comprises: obtain module 301, for when the first image of image acquisition device first area, obtains the first distance parameter between subject and image collecting device in first area; Determination module 302, for based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determines the first driving current value corresponding to the first distance parameter; Driver module, for driving light compensating apparatus, to subject light filling with the first drive current.
Further, in order to obtain the object distance between subject and image collecting device, the first performance, the infrared ray sensor that image collecting device also comprises an infrared transmitting device and be arranged in parallel with infrared transmitting device; Obtain module, specifically for: obtain the first instruction; Perform the first instruction, in the first moment, control infrared transmitting device and send the first infrared ray; In the second moment, obtain the second infrared ray received by infrared ray sensor, wherein, the second infrared ray is the infrared ray being reflected the first infrared ray generation by subject; Based on the very first time interval between the first moment and the second moment, obtain the first distance parameter.
The second performance, incorporated by reference to Fig. 3, the ultrasonic sensor that image collecting device also comprises a ultrasonic transmission device and be arranged in parallel with ultrasonic transmission device; Obtain module, specifically for: obtain the first instruction; Perform the first instruction, in the first moment, control ultrasonic transmission device and send the first ultrasonic wave; In the second moment, obtain the second ultrasonic wave received by ultrasonic sensor, wherein, the second ultrasonic wave is the ultrasonic wave being reflected the first ultrasonic wave generation by subject; Based on the very first time interval between the first moment and the second moment, obtain the first distance parameter.
Further, still with reference to figure 3, obtain module 301 specifically for: obtain one focusing instruction; Perform focusing instruction, control image collecting device focusing; Based on the second distance parameter between the photo-sensitive cell in lens and image collecting device, obtain the first distance parameter.
Further, in memory module 20, store the first corresponding relation of distance parameter and driving current value, the second corresponding relation of spectral characteristic parameter and driving current value, and the 3rd corresponding relation between the weighted value of distance parameter and spectral characteristic parameter; Determination module 302, specifically for: based on the first corresponding relation, according to the first distance parameter, obtain the second driving current value; Based on the second corresponding relation, according to the first spectral characteristic parameter, obtain the 3rd driving current value; Based on the 3rd corresponding relation, according to the first distance parameter, obtain the first weighted value between the second driving current value and the 3rd driving current value; Based on the first weighted value, determine the first driving current value.
Further, image collecting device also comprises: Focusing module 40, is connected with control module 30, for based on the first distance parameter, controls image collecting device focusing.
Image collecting device in above-described embodiment is used to realize device corresponding to the method for above-mentioned light filling, and specific works process describes consistent with above-mentioned one or more embodiment.
Technical scheme in above-mentioned the embodiment of the present application, at least has following technique effect or advantage:
1, due to distance parameter is associated with the driving current value of light compensating apparatus, so, when the first image of image acquisition device first area, after obtaining the first distance parameter in first area between subject and image collecting device, can based on the corresponding relation between distance parameter and the driving current value of light compensating apparatus, according to the first distance parameter, determine the first driving current value, and then drive light compensating apparatus with the first drive current, to subject light filling, that is, first drive current is determined according to the first distance parameter, namely according between subject and image collecting device distance determine, would not occur for the situation from the subject under-exposure away from image collecting device like this, also there will not be for the situation from the subject exposure transition close to image collecting device, so, the image collecting device efficiently solving prior art existence cannot for different subjects, regulate the light filling intensity of light compensating apparatus, thus cause the technical problem of the light filling weak effect to subject, and then improve the light filling effect of image collecting device in the process of collection first image, provide good Consumer's Experience.
2, due in the driving current value based on distance parameter and light compensating apparatus, according to the first distance parameter, after determining the second driving current value that the first distance parameter is corresponding, additionally use the spectral characteristic parameter of light compensating apparatus, as the characterisitic parameters such as colour temperature are revised the second driving current value, to obtain the first drive current, so, when taking pictures, the driving current value that image collecting device can more accurately select the light filling degree of applicable subject corresponding, further increases the light filling effect of image collecting device in the process of collection first image.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (13)
1. a method for light filling, is applied to an image collecting device, and described image collecting device is connected with a light compensating apparatus, it is characterized in that, described method comprises:
When the first image of described image acquisition device first area, obtain the first distance parameter in described first area between subject and described image collecting device;
Based on the corresponding relation between distance parameter and the driving current value of described light compensating apparatus, according to described first distance parameter, determine the first driving current value;
Described light compensating apparatus is driven, to described subject light filling with described first drive current.
2. the method for claim 1, is characterized in that, is set up also is arranged with an infrared transmitting device and an infrared ray sensor in parallel at described image collector;
The first distance parameter in the described first area of described acquisition between subject and described image collecting device, specifically comprises:
Obtain the first instruction;
Perform described first instruction, in the first moment, control described infrared transmitting device and send the first infrared ray;
In the second moment, obtain the second infrared ray received by described infrared ray sensor, wherein, described second infrared ray is the infrared ray being reflected described first infrared ray generation by described subject;
Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
3. the method for claim 1, is characterized in that, is set up also is arranged with a ultrasonic transmission device and a ultrasonic sensor in parallel at described image collector;
The first distance parameter in the described first area of described acquisition between subject and described image collecting device, specifically comprises:
Obtain the first instruction;
Perform described first instruction, in the first moment, control described ultrasonic transmission device and send the first ultrasonic wave;
In the second moment, obtain the second ultrasonic wave received by described ultrasonic sensor, wherein, described second ultrasonic wave is the ultrasonic wave being reflected described first ultrasonic wave generation by described subject;
Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
4. the method for claim 1, is characterized in that, the first distance parameter in the described first area of described acquisition between subject and described image collecting device, is specially:
Obtain a focusing instruction;
Perform described focusing instruction, control the focusing of described image collecting device;
Based on the second distance parameter between the photo-sensitive cell in described lens and described image collecting device, obtain described first distance parameter.
5. the method for claim 1, it is characterized in that, the first corresponding relation of distance parameter and driving current value is stored in described image collecting device, second corresponding relation of spectral characteristic parameter and driving current value, and the 3rd corresponding relation between the weighted value of distance parameter and spectral characteristic parameter;
Described according to described first distance parameter, determine the first driving current value corresponding to described first distance parameter, specifically comprise:
Based on described first corresponding relation, according to described first distance parameter, obtain the second driving current value;
Based on described second corresponding relation, according to the first spectral characteristic parameter, obtain the 3rd driving current value;
Based on described 3rd corresponding relation, according to described first distance parameter, obtain the first weighted value between described second driving current value and described 3rd driving current value;
Based on described first weighted value, determine described first driving current value.
6. the method for claim 1, is characterized in that, after the first distance parameter in the described first area of described acquisition between subject and described image collecting device, described method also comprises:
Based on described first distance parameter, control the focusing of described image collecting device.
7. an image collecting device, described image collecting device is connected with a light compensating apparatus, it is characterized in that, described image collecting device comprises:
Circuit board;
Memory module, is arranged on described circuit board, for store distance parameter and described light compensating apparatus driving current value between corresponding relation;
Control module, be arranged on described circuit board, be connected with described memory module and described light compensating apparatus respectively, for when the first image of described image acquisition device first area, obtain the first distance parameter in described first area between subject and described image collecting device; Based on the corresponding relation between distance parameter and the driving current value of described light compensating apparatus, according to described first distance parameter, determine the first driving current value; Described light compensating apparatus is driven, to described subject light filling with described first drive current.
8. device as claimed in claim 7, it is characterized in that, described control module, specifically comprises:
Obtain module, for when the first image of described image acquisition device first area, obtain the first distance parameter in described first area between subject and described image collecting device;
Determination module, for based on the corresponding relation between distance parameter and the driving current value of described light compensating apparatus, according to described first distance parameter, determines the first driving current value;
Driver module, for driving described light compensating apparatus with described first drive current, to described subject light filling.
9. device as claimed in claim 8, is characterized in that, the infrared ray sensor that described image collecting device also comprises an infrared transmitting device and be arranged in parallel with described infrared transmitting device;
Described acquisition module, specifically for: obtain the first instruction; Perform described first instruction, in the first moment, control described infrared transmitting device and send the first infrared ray; In the second moment, obtain the second infrared ray received by described infrared ray sensor, wherein, described second infrared ray is the infrared ray being reflected described first infrared ray generation by described subject; Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
10. device as claimed in claim 8, is characterized in that, the ultrasonic sensor that described image collecting device also comprises a ultrasonic transmission device and be arranged in parallel with described ultrasonic transmission device;
Described acquisition module, specifically for: obtain the first instruction; Perform described first instruction, in the first moment, control described ultrasonic transmission device and send the first ultrasonic wave; In the second moment, obtain the second ultrasonic wave received by described ultrasonic sensor, wherein, described second ultrasonic wave is the ultrasonic wave being reflected described first ultrasonic wave generation by described subject; Based on the very first time interval between described first moment and described second moment, obtain described first distance parameter.
11. devices as claimed in claim 8, is characterized in that, described acquisition module, specifically for: obtain a focusing instruction; Perform described focusing instruction, control the focusing of described image collecting device; Based on the second distance parameter between the photo-sensitive cell in described lens and described image collecting device, obtain described first distance parameter.
12. devices as claimed in claim 8, it is characterized in that, the first corresponding relation of distance parameter and driving current value is stored in described memory module, second corresponding relation of spectral characteristic parameter and driving current value, and the 3rd corresponding relation between the weighted value of distance parameter and spectral characteristic parameter;
Described determination module, specifically for: based on described first corresponding relation, according to described first distance parameter, obtain the second driving current value; Based on described second corresponding relation, according to the first spectral characteristic parameter, obtain the 3rd driving current value; Based on described 3rd corresponding relation, according to described first distance parameter, obtain the first weighted value between described second driving current value and described 3rd driving current value; Based on described first weighted value, determine described first driving current value.
13. devices as claimed in claim 7, it is characterized in that, described image collecting device also comprises:
Focusing module, is connected with described control module, for based on described first distance parameter, controls the focusing of described image collecting device.
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