CN103702029A - Method and device for prompting focusing during shooting - Google Patents
Method and device for prompting focusing during shooting Download PDFInfo
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- CN103702029A CN103702029A CN201310714267.2A CN201310714267A CN103702029A CN 103702029 A CN103702029 A CN 103702029A CN 201310714267 A CN201310714267 A CN 201310714267A CN 103702029 A CN103702029 A CN 103702029A
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Abstract
The invention discloses a method and a device for prompting focusing during shooting. The method for prompting focusing during shooting comprises the following steps: acquiring a measured distance through a distance sensor, wherein the measured distance is a distance between the imaging surface of shooting equipment and a shot object; displaying focusing prompt information according to the measured distance and the minimum focusing distance of the shooting equipment. According to the method and the device for prompting focusing during shooting disclosed by the invention, a user can be prompted to keep a distance a lens and the shot object within a reasonable range during close shot, so that the close shot efficiency is increased.
Description
Technical field
The present invention relates to digital vedio recording field, method and the device of prompting focusing while relating in particular to a kind of shooting.
Background technology
At present, increasing mobile terminal has been equipped with the digital vedio recording camera lens that carries out digital vedio recording, has become picture pick-up device.User uses the digital vedio recording camera lens on these picture pick-up devices, can different picture and the video of content of shooting, strengthened the interest that user uses picture pick-up device.
When adopting digital vedio recording camera lens to carry out close shot shooting, distance between digital vedio recording camera lens and subject be subject to minimum focusing from restriction, described minimum focusing is from being to make described picture pick-up device can the focus imaging surface of successful picture pick-up device and the minimum value of the distance between subject, and it is determined by the hardware optical element of picture pick-up device conventionally.
When taking, as the distance between the camera lens of picture pick-up device and subject be less than minimum focusing from time, camera lens can not accurately be focused, the picture of taking is unintelligible, if be greater than minimum focusing from, can not make full use of the close shot camera function of camera lens, cannot utilize to greatest extent minimum focusing ability.Due to user cannot know minimum focusing from, cause user ceaselessly to move forward and backward and adjust the distance between picture pick-up device and subject, power consumption increases, and has improved shooting cost, has reduced shooting efficiency.
Summary of the invention
In view of this, method and the device of prompting focusing when the present invention proposes a kind of shooting, the efficiency of taking to improve close shot.
In first aspect, a kind of method of prompting focusing when the embodiment of the present invention provides shooting, described method comprises:
By range sensor, obtain measured distance, the imaging surface that described measured distance is picture pick-up device and the distance between subject;
According to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
In second aspect, the device of prompting focusing when the embodiment of the present invention provides a kind of shooting, described device comprises:
Measured distance acquisition module, for obtaining measured distance by range sensor, the imaging surface that described measured distance is picture pick-up device and the distance between subject;
Information display module, for according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
The present invention obtains the actual range between camera lens and subject by range sensor, according to the actual distance calculation camera lens between camera lens and subject and the minimum focusing between subject from, and taking demonstration focusing information on display interface, with this, point out user when close shot is taken, the distance between camera lens and subject to be remained in rational scope, to reduce, take cost, improve the efficiency that close shot is taken.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the flow chart of the method for the shooting time prompting focusing that provides of first embodiment of the invention;
Fig. 2 is the display interface schematic diagram of the text prompt information that provides of first embodiment of the invention;
Fig. 3 is the flow chart of the method for the shooting time prompting focusing that provides of second embodiment of the invention;
Fig. 4 is the display interface schematic diagram of the picture prompting information that provides of second embodiment of the invention;
Fig. 5 is the flow chart of the method for the shooting time prompting focusing that provides of third embodiment of the invention;
Fig. 6 is the display interface schematic diagram of the animation information that provides of third embodiment of the invention;
Fig. 7 is the flow chart of the method for the shooting time prompting focusing that provides of fourth embodiment of the invention;
Fig. 8 is the display interface schematic diagram of the animation information that provides of fourth embodiment of the invention;
Fig. 9 is the display interface schematic diagram of the warning message that provides of fourth embodiment of the invention;
Figure 10 is the structure chart of the device of the shooting time prompting focusing that provides of fifth embodiment of the invention;
Figure 11 is the schematic diagram that can implement the picture pick-up device of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, in accompanying drawing, only show part related to the present invention but not full content.
The method of prompting focusing during the shooting of the embodiment of the present invention, during shooting, the device of prompting focusing can run on the operating system platform for Portable movable smart machine that the exploitation of Android(Google is installed), the operating system platform for Portable movable smart machine of iOS(Apple exploitation), the operating system platform for Portable movable smart machine of Windows Phone(Microsoft exploitation) terminal of operating system such as, this terminal can be mobile phone, palmtop PC, panel computer, digital camera, any one in Digital Video etc., can comprise central processing unit in this terminal, memory, switching device, power supply, clock signal maker, picture processor, combination in any in Sound Processor Unit etc., above-mentioned central processing unit, memory, switching device, power supply, clock signal maker, picture processor, the method of prompting focusing when realizing the shooting of embodiments of the invention such as the combination in any in Sound Processor Unit etc. and the function of the device of prompting focusing while taking.
Fig. 1 and Fig. 2 show the first embodiment of the present invention.
Fig. 1 is the flow chart of the method for the shooting time prompting focusing that provides of first embodiment of the invention.Referring to Fig. 1, during described shooting, the method for prompting focusing comprises:
Step S110, obtains measured distance by range sensor, the imaging surface that described measured distance is picture pick-up device and the distance between subject.
The camera being equipped with on picture pick-up device at present mostly has automatic focusing function.But in close shot is taken, if picture pick-up device is too near apart from subject, picture pick-up device can not complete automatic focusing.During shooting that the present embodiment provides, the object of the method for prompting focusing is, when picture pick-up device is during apart from the close together of subject, display reminding information on display screen, to point out user to keep the distance between described picture pick-up device and subject.
In step S110, range sensor on the picture pick-up device of most, is all equipped with, they can be for obtaining measured distance, and described measured distance is the imaging surface of picture pick-up device and the distance between subject.In the present embodiment, in order to measure the imaging surface of picture pick-up device and the distance between subject, first open described range sensor, the distance between the imaging surface of described picture pick-up device and described subject is measured.
Concrete, described picture pick-up device can adopt transit time method to measure the imaging surface of described picture pick-up device and the distance between described subject, also can adopt the imaging surface of picture pick-up device described in triangulation and the distance between described subject.
Step S120, according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
Described minimum focusing is from being that described picture pick-up device can carry out automatically focusing, the imaging surface of described picture pick-up device and the minimum range between subject to subject.And described minimum focusing is from the acquisition parameters that to be each picture pick-up device determined by factors such as its optical hardware, different picture pick-up devices have different minimum focusings from.Minimum focusing is from being measured by experiment in advance by manufacturer, and be configured in picture pick-up device, also can be by manufacturer's allocating default value rule of thumb in advance, or preferably can also by demarcation, be obtained in actual use by picture pick-up device, when not only picture pick-up device is initially used, can demarcate, along with the use of equipment, also can regularly demarcate upgrade current minimum focusing from.
Completed to minimum focusing from obtain after, in the demonstration screen display focusing information of described picture pick-up device.In the present embodiment, described focusing information can mean described measured distance and described minimum focusing from the text prompt information of value.; according to the minimum focusing of described measured distance and described picture pick-up device from; the operation that shows focusing information can comprise: according to the minimum focusing of described measured distance and described picture pick-up device from; show described measured distance and described minimum focusing from the word of value, as described focusing information.
Fig. 2 is the display interface schematic diagram of the text prompt information that provides of first embodiment of the invention.Referring to Fig. 2, described display interface comprises image display area 210 and word viewing area 220.Wherein, described image display area 210 is for showing in real time the image of the subject that described camera obtains.It should be appreciated by those skilled in the art that 210 of the described image display area image for the subject to described camera obtained at that time shows in real time, and the image of the subject described camera not being obtained carries out any processing.Therefore, the image of the shown subject of described image display area 210 might not be the picture rich in detail of described subject.
Described word viewing area 220 for measured distance described in display reminding user and described minimum focusing from word.Described word viewing area 220 can show current described measured distance and described minimum focusing from value, word that also can display reminding, such as, " distance is suitably ", or the word such as " hypotelorism please be kept at a distance ".
The value that it should be appreciated by those skilled in the art that the measured distance that described word viewing area 220 shows is according to the variation of the position of described picture pick-up device and real-time change.That is to say, when the range sensor being equipped with when described picture pick-up device measures described measured distance and changes, the value of the measured distance that described word viewing area 220 shows also changes.
The present embodiment is measured the imaging surface of picture pick-up device and the distance between subject by range sensor, and show focusing prompting axle according to the distance between the imaging surface of the picture pick-up device measuring and subject, suitable distance between prompting user maintenance and subject, avoid picture pick-up device frequent adjusting focal length in the situation that can not accurately focusing, saves energy, reduce and take cost, improve the efficiency that close shot is taken.
Fig. 3 and Fig. 4 show the second embodiment of the present invention.
Fig. 3 is the flow chart of the method for the shooting time prompting focusing that provides of second embodiment of the invention.During described shooting, the method for prompting focusing be take above-described embodiment as basis, further, according to the minimum focusing of described measured distance and described picture pick-up device from, before showing focusing information, can also first carry out minimum focusing distance calibration, can only when initialization, demarcate, can be also to select to demarcate according to setting cycle or user.The method of the present embodiment comprises:
Step S310, obtains measured distance by range sensor, the imaging surface that described measured distance is picture pick-up device and the distance between subject.
Step S320, when judge minimum focusing that described measured distance is less than or equal to initial default from time, start minimum focusing distance calibration.
In the first embodiment of the present invention, described minimum focusing is from being predefined acquisition parameters.But predefined minimum focusing is from being inaccurate, described picture pick-up device can be realized automatic focusing than predefined minimum focusing in the distance apart from subject on less position.In order to prevent that in described picture pick-up device, mistake appears in predefined minimum focusing distance parameter, need to be to described minimum focusing from again demarcating.
If the judgement of described picture pick-up device obtains described measured distance, the minimum focusing that distance between described picture pick-up device and described subject is less than or equal to initial default from time, described picture pick-up device starts the minimum distance calibration of focusing.
Step S330, when judging described picture pick-up device according to described measured distance when approaching the state of subject and focusing successfully, with current measured distance be updated to described minimum focusing from.
If described picture pick-up device according to the judgement of described measured distance himself in approaching the state of subject, and described picture pick-up device can be focused automatically under this state, by original predefined minimum focusing from being updated to current measured distance.
Step S340, according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
In the present embodiment, described focusing information mean described measured distance and described minimum focusing between the picture of spatial relationship.According to the minimum focusing of described measured distance and described picture pick-up device from, the operation that shows focusing information preferably includes: at the demonstration screen display focusing prompting axle of described picture pick-up device, and on described focusing prompting axle, identify respectively the primary importance point of described measured distance and minimum focusing from second place point, as described focusing information.
Fig. 4 is the display interface schematic diagram of the picture prompting information that provides of second embodiment of the invention.Referring to Fig. 4, described display interface comprises image display area 410 and focusing prompting axle 420.Described image display area 410 is identical with function and the implementation of the image display area 210 shown in Fig. 2, does not repeat them here.
Described focusing prompting axle 420 for show measured distance and minimum focusing between position relationship.In the present embodiment, described focusing prompting axle 420 is horizontal linear shape.And the first end of described focusing prompting axle 420 is positioned at the left end of described horizontal linear, the second end of described focusing prompting axle 420 is positioned at the right-hand member of described horizontal linear.
On described focusing prompting axle 420, be provided with for representing the primary importance point 321 of measured distance, and for represent minimum focusing from second place point 422.Described focusing prompting axle 420 utilizes the distance between described primary importance point 421 and the second end of described focusing prompting axle 420 to represent described measured distance, be the imaging surface of described picture pick-up device and the distance between subject, and utilize distance between the second end of described second place point 422 and described focusing prompting axle 420 represent described minimum focusing from.In the present embodiment, the right-hand member that described focusing points out axle 420 to take self is described the second end.
In the present embodiment, the distance between described primary importance point 421 and the second end of described focusing prompting axle 420 is provided by following formula:
In formula (1), l is illustrated in the distance between the above primary importance point 421 of described display interface and the second end of described focusing prompting axle 420; L represents the total length of described focusing prompting axle 420; P represents the measured distance that range sensor gets; M represent described minimum focusing from.
It should be noted that, in the present embodiment, the value of the total length L of described focusing prompting axle 420 is slightly less than the width of display interface.
In the present embodiment, the distance between described second place point 422 and the second end of described focusing prompting axle 420 is provided by following formula:
l
m＝L/5 (2)。
In formula (2), l
mbe illustrated in the distance between the above second place point 422 of described display interface and the second end of described focusing prompting axle 420; L represents the total length of described focusing prompting axle 420.
It should be noted that, when on described focusing prompting axle 420, the more described second place point of described primary importance point 421 422 with approach with described focusing prompting axle 420 the second end time, illustrate described measured distance be less than minimum focusing from, need to stop the automatic focusing of described camera.
In addition, it should be appreciated by those skilled in the art that the display position of described focusing prompting axle 420 might not be below described Image Display region 410, also can be above described Image Display region 410, or any position on display interface.
Those skilled in the art be also to be understood that the shape of described focusing prompting axle 420 is not limited only to horizontal linear shape, can also be vertically to prop up wire, parabolic shape, hyperbolic wire, sine curve shape.Regardless of the shape of described focusing prompting axle 420, described primary importance point 421 and described focusing point out ratio between the distance between distance between one end of axle and described second place point 422 and described end all with measured distance and minimum focusing between ratio equate.
With the first embodiment of the present invention, compare, the present embodiment has increased minimum focusing from the step of upgrading, and makes the minimum focusing distance parameter of picture pick-up device more accurate; Meanwhile, utilize to represent current distance and minimum focusing between the picture of spatial relationship as focusing information, make the focusing information of demonstration more directly perceived.
The present embodiment can automatically be focused successfully to the minimum focusing of initial default from upgrading by judgement picture pick-up device under the state in approaching subject, effectively avoided the inaccurate situation of minimum focusing distance parameter of initial default, not only avoid picture pick-up device frequent adjusting focal length in the situation that can not accurately focusing, and guaranteed the accuracy of the focusing information of demonstration.
Fig. 5 and Fig. 6 show the third embodiment of the present invention.
Fig. 5 is the flow chart of the method for the shooting time prompting focusing that provides of third embodiment of the invention.Referring to Fig. 5, during described shooting, the method for prompting focusing be take above-described embodiment as basis, further, according to the minimum focusing of described measured distance and described picture pick-up device from, before showing focusing information, also comprise: described measured distance and predetermined distance threshold are compared, if described measured distance is less than described predetermined distance threshold, trigger described according to the minimum focusing of described measured distance and described picture pick-up device from, the step that shows focusing information, wherein, described predeterminable range threshold value be greater than described minimum focusing from.
The method of the present embodiment specifically comprises:
Step S510, obtains measured distance by range sensor, the imaging surface that described measured distance is picture pick-up device and the distance between subject.
Step S520, when judge minimum focusing that described measured distance is less than or equal to initial default from time, start minimum focusing distance calibration.
Step S530, when judging described picture pick-up device according to described measured distance when approaching the state of subject and focusing successfully, with current measured distance be updated to described minimum focusing from.
Above-mentioned steps S520 and S530 are can selection operation.
Step S540, described measured distance and predetermined distance threshold are compared, if described measured distance is less than described predetermined distance threshold, trigger described according to the minimum focusing of described measured distance and described picture pick-up device from, show the step of focusing information.
Described minimum focusing is from being that described picture pick-up device can carry out automatically focusing to subject, minimum distance between the imaging surface of described picture pick-up device and subject.And, although different picture pick-up devices have different minimum focusings from value, described minimum focusing from value generally less.Therefore, only have distance between described picture pick-up device and subject hour, be just necessary to show focusing information, point out user to keep the distance between described picture pick-up device and described subject.
In the present embodiment, picture pick-up device is preset to a predetermined distance threshold, if described measured distance is greater than this predetermined distance threshold, do not show described focusing information; If described measured distance is less than this predetermined distance threshold, show described focusing information.
In a preferred implementation of the present embodiment, the value of described predetermined distance threshold is 20cm.
Step S550, according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
In the present embodiment, described focusing information mean described measured distance and described minimum focusing between spatial relationship and the animation of relative variation tendency.By represent described measured distance and described minimum focusing between spatial relationship and during the animation display reminding information of relative variation tendency, described according to described measured distance and described minimum focusing from, show that the step of focusing information comprises: according to the variation tendency of the measured distance of the adjacent time point of setting-up time interval acquiring; According to the variation tendency of described measured distance, on the display screen of described picture pick-up device with animation show described measured distance and minimum focusing between relative variation tendency.
Fig. 6 is the display interface schematic diagram of the animation information that provides of third embodiment of the invention.Without loss of generality, the distance with described picture pick-up device apart from subject furthers, and is also that the animation that described measured distance shows while diminishing is the display mode of the animation information in example explanation present embodiment.
Referring to Fig. 6, on described display interface, show focusing prompting axle 610.On described focusing prompting axle 610, be provided with for representing the first sliding point 611 of measured distance, and for represent minimum focusing from the second sliding point 612.At time point 1, the position at the second sliding point 612 places is far away described in the positional distance at described the first sliding point 611 places.At time point 2, the more described time point 1 in position at the second sliding point 612 places is nearer described in the positional distance at described the first sliding point 611 places.At time point 3, described the first sliding point 611 has slided into the target location of described the first sliding point.At time point 4, above described the first sliding point 611 and described the second sliding point, show respectively represent current measured distance and minimum focusing from the word of value.That is to say, described the first sliding point 611 is from the position away from described the second sliding point 612 slides into the more approaching target location of described the second sliding point 612 of distance, the word that show to represent the value of current measured distance above described the first sliding point, and above described the second sliding point, show represent current minimum focusing from the word of value.
It should be noted that, when described the first sliding point slides on target location, the distance between one end of described the first sliding point and described focusing prompting axle with the ratio of the distance of described the second sliding point and this end equal described measured distance and described minimum focusing between ratio.
In addition, also it should be noted that, as as described in picture pick-up device apart from the distance of subject, further, also be the animation that described measured distance shows while diminishing, the display mode of animation is that described the first sliding point 611 slides into the target location further from described the second sliding point 612 from described the second comparatively approaching position of sliding point 612 of distance, the word that show to represent the value of current measured distance above described the first sliding point 611, and above described the second sliding point 612, show represent current minimum focusing from the word of value.
With second embodiment of the invention, compare, in the present embodiment, increased the step of measured distance being compared determine whether to show focusing information with predetermined distance threshold, avoided far away apart from subject at picture pick-up device, the demonstration to focusing information while not needing to show focusing information; And, utilize to represent current distance and minimum focusing between spatial relationship and the animation of relative variation tendency as the information of focusing, make the focusing information of demonstration more directly perceived.
Whether the present embodiment shows focusing information by the measured distance between the imaging surface of picture pick-up device and subject and predetermined distance threshold are compared to decision, avoided showing the situation of focusing information in the situation that picture pick-up device is far away apart from subject, not only avoid picture pick-up device frequent adjusting focal length in the situation that can not accurately focusing, and avoided unnecessary information indicating.
Fig. 7 to Fig. 9 shows the fourth embodiment of the present invention.
Fig. 7 is the flow chart of the method for the shooting time prompting focusing that provides of fourth embodiment of the invention.Referring to Fig. 7, during described shooting, the method for prompting focusing be take above-described embodiment as basis, further, according to the minimum focusing of described measured distance and described picture pick-up device from, after showing focusing information, also comprise: by described measured distance and minimum focusing from comparing, if described measured distance be less than described minimum focusing from, send warning message.
During shooting that accordingly, the present embodiment provides, the method for prompting focusing preferably includes:
Step S710, obtains measured distance by range sensor, the imaging surface that described measured distance is picture pick-up device and the distance between subject.
Step S720, when judge minimum focusing that described measured distance is less than or equal to initial default from time, start minimum focusing distance calibration.
Step S730, when judging described picture pick-up device according to described measured distance when approaching the state of subject and focusing successfully, with current measured distance be updated to described minimum focusing from.
Step S740, described measured distance and predetermined distance threshold are compared, if described measured distance is less than described predetermined distance threshold, trigger described according to the minimum focusing of described measured distance and described picture pick-up device from, show the step of focusing information.
Step S750, according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
Preferably, identical with step S550 in third embodiment of the invention, described according to the minimum focusing of described measured distance and described picture pick-up device from, show that the step of focusing information can also comprise: according to the variation tendency of the measured distance of the adjacent time point of setting-up time interval acquiring; According to the variation tendency of described measured distance, on the display screen of described picture pick-up device with animation show described measured distance and minimum focusing between relative variation tendency.It should be appreciated by those skilled in the art that described according to the minimum focusing of described measured distance and described picture pick-up device from, show that the step of focusing information can also realize the demonstration to focusing information in other possible modes.
Fig. 8 is the display interface schematic diagram of the animation information that provides of fourth embodiment of the invention.Equally, the distance with described picture pick-up device apart from subject furthers, and is also that the animation that described measured distance shows while diminishing is the display mode of the animation information in example explanation present embodiment.
Referring to Fig. 8, on described display interface, show focusing prompting axle 810.On described focusing prompting axle 810, be provided with for representing the first sliding point 811 of measured distance, for represent minimum focusing from the second sliding point 812, and the arrow 813 that is used to indicate described the second sliding point glide direction.At time point 1, described the second sliding point 812 is positioned at described the first sliding point 811 position far away of distance.At time point 2, described the second sliding point 812 slides into described the first nearer target location of sliding point 811 of distance.At described the second sliding point 812, in the process of sliding near the target location of described the first sliding point 811, by changing gray scale or the color of described arrow 813, described arrow 813 is carried out to flickering display.Described the second sliding point 812 slides into behind the nearer target location of described the first sliding point 811 of distance, above described the first sliding point 811, show for representing the word of the value of measured distance, and above described the second sliding point 812, show for represent minimum focusing from the word of value.
It should be noted that, when described the second sliding point slides on target location, the distance between one end of described the first sliding point and described focusing prompting axle with the ratio of the distance of described the second sliding point and this end equal described measured distance and described minimum focusing between ratio.
In addition, also it should be noted that, as as described in picture pick-up device apart from the distance of subject, further, also be the animation that described measured distance shows while diminishing, to be described the second sliding point 812 slide into described the first nearer target location of sliding point 811 of distance from described the first sliding point 811 position far away of distance to the display mode of animation, simultaneously by changing the color of described arrow 813 or gray scale to indicating the arrow of the glide direction of described the second sliding point 813 to carry out flickering display; When described the second sliding point 813 slides into behind target location, above described the first sliding point 811, show to represent the word of the value of current measured distance, and above described the second sliding point 812, show represent current minimum focusing from the word of value.
Step S760, by described measured distance and minimum focusing from comparing, if described measured distance be less than described minimum focusing from, send warning message.
Fig. 9 is the display interface schematic diagram of the warning message that provides of fourth embodiment of the invention.Referring to Fig. 9, on display interface, shown the icon 920 of the hypotelorism between picture pick-up device and described subject described in prompting user.It should be appreciated by those skilled in the art that in other preferred implementations of the present embodiment, can also be by Showing Picture on described display interface, the information indicating user such as word keeps the distance between described picture pick-up device and described subject.
With second embodiment of the invention, compare, in the present embodiment, increased when described measured distance be less than described minimum focusing from time, send the step of warning message, described in prompting user measured distance can not be less than described minimum focusing from, clearer and more definite indicating user keeps the distance between picture pick-up device and subject.
The present embodiment by by described measured distance and described minimum focusing from comparing, and described measured distance be less than described minimum focusing from time send warning message, described in prompting user, measured distance can not be less than described minimum focusing from, the more efficiently picture pick-up device frequent adjusting focal length in the situation that of accurate focusing of having avoided.
Figure 10 shows the fifth embodiment of the present invention.
Figure 10 is the structure chart of the device of the shooting time prompting focusing that provides of fifth embodiment of the invention.Referring to Figure 10, during described shooting, the device of prompting focusing comprises: measured distance acquisition module 1010, information display module 1050.
Described measured distance acquisition module 1010 is for obtaining measured distance by range sensor.Wherein, described measured distance is the imaging surface of described picture pick-up device and the distance between subject.In a kind of preferred implementation of the present embodiment, described measured distance acquisition module 1010 obtains the imaging surface of described picture pick-up device and the distance between subject by range sensor.
Described measured distance acquisition module 1010 can obtain described measured distance by transit time method, also can obtain described measured distance by trigonometry.
Described information display module 1050 for according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.Wherein, described focusing information comprise described measured distance and described minimum focusing from the word of value, represent described measured distance and described minimum focusing between the picture of spatial relationship, or represent described measured distance and described minimum focusing between spatial relationship and the animation of variation tendency.
The present embodiment obtains measured distance by measured distance acquisition module and information display module and according to measured distance display reminding information, by information, point out user to keep the distance between picture pick-up device and subject, avoid picture pick-up device frequent adjusting focal length in the situation that can not accurately focusing.
The device of prompting focusing while taking pictures that preferably, the present embodiment provides also comprises: minimum focusing distance calibration starts module 1020, minimum focusing from update module 1030.
Described minimum focusing distance calibration start module 1020 for when judge minimum focusing that described measured distance is less than or equal to initial default from time, start the minimum distance calibration of focusing.
Described minimum focusing from update module 1030 for when judging described picture pick-up device according to described measured distance when approaching the state of subject and focusing successfully, with current measured distance be updated to described minimum focusing from.
Utilize described minimum focusing distance calibration startup module and minimum focusing from update module, the device of prompting focusing while taking pictures that the present embodiment provides has effectively been avoided the inaccurate situation of minimum focusing distance parameter of initial default, not only avoid picture pick-up device frequent adjusting focal length in the situation that can not accurately focusing, and guaranteed the accuracy of the focusing information of demonstration.
The device of prompting focusing while taking pictures that preferably, the present embodiment provides also comprises: distance threshold comparison module 1040.
Described distance threshold comparison module 1040 for according to the minimum focusing of described measured distance and described picture pick-up device from, before showing focusing information, described measured distance and predetermined distance threshold are compared, if described measured distance is less than described predetermined distance threshold, trigger described according to the minimum focusing of described measured distance and described picture pick-up device from, show the step of focusing information.
Utilize described distance threshold comparison module, the prompting of only just focusing when described picture pick-up device is nearer apart from subject of the device of prompting focusing while taking pictures that the present embodiment provides, has avoided unnecessary information indicating.
The device of prompting focusing while taking pictures that preferably, the present embodiment provides also comprises: warning message sending module 1060.
Described warning message sending module 1060 for according to the minimum focusing of described measured distance and described picture pick-up device from, after showing focusing information, by described measured distance and minimum focusing from comparing, if described measured distance be less than described minimum focusing from, send warning message.
Utilize described warning message sending module 1060, described in the device prompting user of prompting focusing while taking pictures that the present embodiment provides, measured distance can not be less than described minimum focusing from, the more efficiently picture pick-up device frequent adjusting focal length in the situation that of accurate focusing of having avoided.
The present embodiment is measured the imaging surface of picture pick-up device and the distance between subject by range sensor, according to the distance between the imaging surface of described picture pick-up device and subject, show focusing prompting axle, and the distance of described picture pick-up device and subject be less than nearest focusing from time send warning message, suitable distance between prompting user maintenance and subject, avoid picture pick-up device frequent adjusting focal length in the situation that can not accurately focusing, reduce and take cost, improve the efficiency that close shot is taken.
Figure 11 is the schematic diagram that can implement the picture pick-up device of the embodiment of the present invention.Referring to Figure 11, described picture pick-up device can for implement to provide in the first embodiment of the present invention and the second embodiment shooting time prompting focusing method.Described picture pick-up device comprises digital camera, Digital Video, possesses the communication terminal of camera function, possesses the personal digital assistant (Personal digital assistant, PDA) of camera function, other portable equipments that possess the panel computer of camera function and possess camera function.
Described picture pick-up device can comprise RF(Radio Frequency, radio frequency) circuit 1110, the memory 1120 that includes one or more computer-readable recording mediums, input unit 1130, display unit 1140, transducer 1150, voicefrequency circuit 1160, camera 1170, include the parts such as the above processor 1180 of processing core of or and power supply 1190.It will be understood by those skilled in the art that the picture pick-up device structure shown in Figure 10 does not form the restriction to picture pick-up device, can comprise the parts more more or less than diagram, or combine some parts, or different parts are arranged.
RF circuit 1110 can be used for receiving and sending messages or communication process in, the reception of signal and transmission, especially, after the downlink information of base station is received, transfer to one or an above processor 1180 to process; In addition, by relating to up data, send to base station.Conventionally, RF circuit 1110 includes but not limited to antenna, at least one amplifier, tuner, one or more oscillator, subscriber identity module (SIM) card, transceiver, coupler, LNA(Low Noise Amplifier, low noise amplifier), duplexer etc.In addition, RF circuit 1010 can also be by radio communication and network and other devices communicatings.Described radio communication can be used arbitrary communication standard or agreement, include but not limited to GSM (Global System of Mobile communication, global system for mobile communications), GPRS (General Packet Radio Service, general packet radio service), CDMA (Code Division Multiple Access, code division multiple access), WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)), LTE (Long Term Evolution, Long Term Evolution), Email, SMS (Short Messaging Service, Short Message Service) etc.
Memory 1120 can be used for storing software program and module, and processor 1180 is stored in software program and the module of memory 1120 by operation, thereby carries out various function application and data processing.Memory 1120 can mainly comprise storage program district and storage data field, wherein, and the application program (such as sound-playing function, picture playing function etc.) that storage program district can storage operation system, at least one function is required etc.; The data (such as voice data, phone directory etc.) that create according to the use of terminal etc. can be stored in storage data field.In addition, memory 1120 can comprise high-speed random access memory, can also comprise nonvolatile memory, for example at least one disk memory, flush memory device or other volatile solid-state parts.Correspondingly, memory 1120 can also comprise Memory Controller, so that the access of processor 1180 and 1130 pairs of memories 1120 of input unit to be provided.
Input unit 1130 can be used for receiving numeral or the character information of input, and generation arranges with user and function is controlled relevant keyboard, mouse, action bars, optics or the input of trace ball signal.Particularly, input unit 1130 can comprise touch-sensitive surperficial 1131 and other input equipments 1132.Touch-sensitive surperficial 1131, also referred to as touch display screen or Trackpad, can collect user or near touch operation (using any applicable object or near the operations of annex on touch-sensitive surperficial 1131 or touch-sensitive surperficial 1131 such as finger, stylus such as user) thereon, and drive corresponding jockey according to predefined formula.Optionally, touch-sensitive surperficial 1131 can comprise touch detecting apparatus and two parts of touch controller.Wherein, touch detecting apparatus detects user's touch orientation, and detects the signal that touch operation is brought, and sends signal to touch controller; Touch controller receives touch information from touch detecting apparatus, and converts it to contact coordinate, then gives processor 1180, and the order that energy receiving processor 1180 is sent is also carried out.In addition, can adopt the polytypes such as resistance-type, condenser type, infrared ray and surface acoustic wave to realize touch-sensitive surperficial 1131.Except touch-sensitive surperficial 1131, input unit 1130 can also comprise other input equipments 1132.Particularly, other input equipments 1132 can include but not limited to one or more in physical keyboard, function key (controlling button, switch key etc. such as volume), trace ball, mouse, action bars etc.
Display unit 1140 can be used for showing the information inputted by user or the various graphical user interface of the information that offers user and picture pick-up device, and these graphical user interface can consist of figure, text, icon, video and its combination in any.Display unit 1140 can comprise display floater 1141, optionally, can adopt the forms such as LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) to configure display floater 1141.Further, touch-sensitive surperficial 1131 can cover display floater 1141, when touch-sensitive surperficial 1131 detect thereon or near touch operation after, send processor 1180 to determine the type of touch event, corresponding vision output is provided according to the type of touch event with preprocessor 1180 on display floater 1141.Although in Figure 11, touch-sensitive surperficial 1131 with display floater 1141 be as two independently parts realize input and input function, in certain embodiments, can by touch-sensitive surperficial 1131 and display floater 1141 integrated and realize input and output function.
Picture pick-up device also can comprise at least one transducer 1150, such as optical sensor, motion sensor, range sensor and other transducers.Particularly, optical sensor can comprise ambient light sensor and proximity transducer, and wherein, ambient light sensor can regulate according to the light and shade of ambient light the brightness of display floater 1141, proximity transducer can, when picture pick-up device moves in one's ear, cut out display floater 1141 and/or backlight.A kind of as motion sensor, Gravity accelerometer can detect the size of the acceleration that (is generally three axles) in all directions, when static, can detect size and the direction of gravity, can be used for identifying application (such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, knock) of mobile phone attitude etc.Described range sensor is for measuring the distance between described picture pick-up device and other objects.Described picture pick-up device is other transducers such as configurable gyroscope, barometer, hygrometer, thermometer, infrared ray sensor also, do not repeat them here.
Voicefrequency circuit 1160, loud speaker 1161, microphone 1162 can provide the audio interface between user and terminal.Voicefrequency circuit 1160 can be transferred to loud speaker 1161 by the signal of telecommunication after the voice data conversion receiving, and is converted to voice signal exports by loud speaker 1161; On the other hand, microphone 1162 is converted to the signal of telecommunication by the voice signal of collection, after being received by voicefrequency circuit 1160, be converted to voice data, after again voice data output processor 1180 being processed, through RF circuit 1110, to send to such as another terminal, or export voice data to memory 1120 to further process.Voicefrequency circuit 1160 also may comprise earphone jack, so that communicating by letter of peripheral hardware earphone and terminal to be provided.
Camera 1170 is for gathering described picture pick-up device visual around.Described camera 1170 can be for the shooting of static images, also can obtaining for dynamic video.Described camera 1170 is by the induction of ambient light being obtained to picture around, by the electric signal transmission that characterizes picture around to processor 1180, so that 1180 pairs of picture signals of processor further process.Described camera 1170 has certain resolution.The resolution parameter of camera has characterized the value of the pixel that picture that described camera 1170 obtains can comprise at most.
Processor 1180 is control centres of terminal, utilize the various piece of various interface and the whole terminal of connection, by moving or carry out software program and/or the module being stored in memory 1120, and call the data that are stored in memory 1120, carry out various functions and the deal with data of terminal, thereby mobile phone is carried out to integral monitoring.Optionally, processor 1180 can comprise one or more processing cores; Preferably, processor 1180 can integrated application processor and modem processor, and wherein, application processor is mainly processed operating system, user interface and application program etc., and modem processor is mainly processed radio communication.Be understandable that, above-mentioned modem processor also can not be integrated in processor 1180.
Terminal also comprises that the power supply 1190(powering to all parts is such as battery), preferred, power supply can be connected with processor 1180 logics by power-supply management system, thereby realizes the functions such as management charging, electric discharge and power managed by power-supply management system.Power supply 1190 can also comprise the random component such as one or more direct current or AC power, recharging system, power failure detection circuit, power supply changeover device or inverter, power supply status indicator.
Although not shown, terminal can also comprise WiFi module, bluetooth module etc., and this is no longer going to repeat them.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can realize with the executable program code of computer installation, thereby they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes Figure of description content of the present invention to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. while taking, a method for prompting focusing, is characterized in that, comprising:
By range sensor, obtain measured distance, the imaging surface that described measured distance is picture pick-up device and the distance between subject;
According to the minimum focusing of described measured distance and described picture pick-up device between relation, show focusing information.
2. method according to claim 1, is characterized in that, according to the minimum focusing of described measured distance and described picture pick-up device from, before showing focusing information, also comprise:
When judge minimum focusing that described measured distance is less than or equal to initial default from time, start minimum focusing distance calibration;
When judging described picture pick-up device according to described measured distance when approaching the state of subject and focusing successfully, with current measured distance be updated to described minimum focusing from.
3. method according to claim 1, is characterized in that, according to the minimum focusing of described measured distance and described picture pick-up device from, before showing focusing information, also comprise:
Described measured distance and predetermined distance threshold are compared, if described measured distance is less than described predetermined distance threshold, trigger described according to the minimum focusing of described measured distance and described picture pick-up device from, the step that shows focusing information, wherein, described predeterminable range threshold value be greater than described minimum focusing from.
4. method according to claim 1, is characterized in that, according to the minimum focusing of described measured distance and described picture pick-up device from, after showing focusing information, also comprise:
By described measured distance and minimum focusing from comparing, if described measured distance be less than described minimum focusing from, send warning message.
5. according to the arbitrary described method of claim 1 to 4, it is characterized in that, according to the minimum focusing of described measured distance and described picture pick-up device from, show that focusing information comprises:
According to the minimum focusing of described measured distance and described picture pick-up device from, show described measured distance and described minimum focusing from the word of value, as described focusing information; And/or,
At the demonstration screen display focusing prompting axle of described picture pick-up device, and on described focusing prompting axle, identify respectively the primary importance point of described measured distance and minimum focusing from second place point, as described focusing information; And/or,
According to the variation tendency of the measured distance of the adjacent time point of setting-up time interval acquiring;
According to the variation tendency of described measured distance, on the display screen of described picture pick-up device with animation show described measured distance and minimum focusing between relative variation tendency.
6. while taking, a device for prompting focusing, is characterized in that, comprising:
Measured distance acquisition module, for obtaining measured distance by range sensor, the imaging surface that described measured distance is picture pick-up device and the distance between subject;
Information display module, for according to the minimum focusing of described measured distance and described picture pick-up device from, show focusing information.
7. device according to claim 6, is characterized in that, described device also comprises:
Minimum focusing distance calibration starts module, for before obtaining measured distance by range sensor, when judge minimum focusing that described measured distance is less than or equal to initial default from time, start minimum focusing distance calibration;
Minimum focusing is from update module, for before obtaining measured distance by range sensor, when judging described picture pick-up device according to described measured distance when approaching the state of subject and focusing successfully, with current measured distance be updated to described minimum focusing from.
8. device according to claim 6, is characterized in that, described device also comprises:
Distance threshold comparison module, for according to the minimum focusing of described measured distance and described picture pick-up device from, before showing focusing information, described measured distance and predetermined distance threshold are compared, if described measured distance is less than described predetermined distance threshold, trigger described according to the minimum focusing of described measured distance and described picture pick-up device from, show the step of focusing information, wherein, described predeterminable range threshold value be greater than described minimum focusing from.
9. device according to claim 6, is characterized in that, described device also comprises:
Warning message sending module, for according to the minimum focusing of described measured distance and described picture pick-up device from, after showing focusing information, by described measured distance and minimum focusing from comparing, if described measured distance be less than described minimum focusing from, send warning message.
10. according to the arbitrary described device of claim 6 to 9, it is characterized in that, described information display module specifically for:
According to the minimum focusing of described measured distance and described picture pick-up device from, show described measured distance and described minimum focusing from the word of value, as described focusing information; And/or,
At the demonstration screen display focusing prompting axle of described picture pick-up device, and on described focusing prompting axle, identify respectively the primary importance point of described measured distance and minimum focusing from second place point, as described focusing information; And/or,
According to the variation tendency of the measured distance of the adjacent time point of setting-up time interval acquiring;
According to the variation tendency of described measured distance, on the display screen of described picture pick-up device with animation show described measured distance and minimum focusing between relative variation tendency.
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