CN104333703A - Method and terminal for photographing by virtue of two cameras - Google Patents

Method and terminal for photographing by virtue of two cameras Download PDF

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Publication number
CN104333703A
CN104333703A CN201410706022.XA CN201410706022A CN104333703A CN 104333703 A CN104333703 A CN 104333703A CN 201410706022 A CN201410706022 A CN 201410706022A CN 104333703 A CN104333703 A CN 104333703A
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CN
China
Prior art keywords
picture
camera
definition
scenery
burnt camera
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CN201410706022.XA
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Chinese (zh)
Inventor
韦怡
周奇群
张弓
孙剑波
蓝和
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广东欧珀移动通信有限公司
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Priority to CN201410706022.XA priority Critical patent/CN104333703A/en
Publication of CN104333703A publication Critical patent/CN104333703A/en

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Abstract

The invention discloses a method and a terminal for photographing by virtue of two cameras so as to acquire high-quality images. The method comprises the following steps: starting a near-focus camera and a far-focus camera when photographing modes of the cameras are set as an all-field-depth mode; respectively focusing the near-focus camera and the far-focus camera so as to enable photographic fields photographed by the near-focus camera within a preset distance as well as photographic fields photographed by the far-focus camera outside the preset distance to be clear; simultaneously photographing two pictures of different field depths, aiming at the same photographic field, by virtue of the near-focus camera and the far-focus camera; and synthesizing the two pictures of the different field depths so as to obtain an all-field-depth picture. According to the method, the relatively high-definition picture can be obtained without increasing the sizes of die sets of the two cameras and the size and the manufacturing cost of the terminal.

Description

The method using dual camera to take pictures and terminal

Technical field

The invention belongs to image processing field, particularly relate to a kind of use dual camera to take pictures method and terminal.

Background technology

The development of the intelligent terminal such as smart mobile phone, panel computer technology, makes the function of these terminals from strength to strength, has surmounted the simple function of communication far away.Can not rant out, the intelligent terminals such as smart mobile phone have been no longer simple meanss of communication, but integrate the handicraft of leisure, amusement and functions such as communicating.Such as, general smart mobile phone all with camera, to realize the function of taking pictures and/or making a video recording.

The important indicator weighing the shoot function of above-mentioned intelligent terminal is the definition of image.In order to obtain the high image of definition, intelligent terminal often takes the mode of zoom to carry out photographic images.A kind of existing method is to obtaining image clearly by the mode of digital zoom.So-called digital zoom, refers to by algorithm, cuts out and/or amplify image.

But, above-mentionedly merely image cut out and/or amplify, seriously can reduce picture quality, the original intention of digital zoom can not be reached.

Summary of the invention

The invention provides a kind of use dual camera to take pictures method and terminal, to obtain high-quality image.

First aspect present invention provides the method using dual camera to take pictures, and comprising:

Under camera screening-mode is set to the dark pattern of panorama, start nearly burnt camera and burnt camera far away;

Respectively described nearly burnt camera and burnt camera far away are focused, make described nearly burnt camera captured scenery and described burnt camera far away captured scenery outside described predeterminable range within predeterminable range all clear;

For same scenery, described nearly burnt camera and burnt camera far away take the photo of two different depth of field simultaneously;

By the synthesis of the picture of described two different depth of field to obtain the dark picture of panorama.

In conjunction with first aspect, in the first possible implementation of first aspect, describedly respectively focusing is carried out to described nearly burnt camera and burnt camera far away and comprises:

According to the camera lens depth-of-field guide of described nearly burnt camera, the focusing motor stroke of described nearly burnt camera is pushed to scenery definition range within predeterminable range time described nearly burnt camera focusing motor answer in-position; And

According to the camera lens depth-of-field guide of described burnt camera far away, the focusing motor stroke of described burnt camera far away is pushed to scenery definition range outside described predeterminable range time described burnt camera far away focusing motor answer in-position.

In conjunction with first aspect, in the implementation that the second of first aspect is possible, described synthesis by the picture of described two different depth of field comprises to obtain the dark picture of panorama:

Determine the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high;

Described the same area in picture relatively high for the scenery definition of described the same area is replaced the described the same area in the relatively low picture of the scenery definition of described the same area, after replacing, gained picture is the dark picture of described panorama.

In conjunction with the implementation that the second of first aspect is possible, in the third possible implementation of first aspect, the described picture determining that the scenery definition of the same area in the picture of described two different depth of field is relatively high comprises:

According to focusing evaluation function, definition Evaluation threshold is set;

If compared with described definition Evaluation threshold, in picture P1, the relatively described definition Evaluation threshold of the scenery definition of the same area is higher than the relatively described definition Evaluation threshold of the scenery definition of the same area in picture P2, then determine that picture P1 is the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high.

In conjunction with the third possible implementation of the first possible implementation of first aspect, first aspect, the possible implementation of the second of first aspect or first aspect, in the 4th kind of possible implementation of first aspect, described focusing evaluation function comprises any one or several combinations in frequency spectrum function, gradient function and entropy function.

Second aspect present invention provides a kind of terminal using dual camera to take pictures, and comprising:

Start module, under being set to the dark pattern of panorama at camera screening-mode, start nearly burnt camera and burnt camera far away;

Focusing module, for focusing to described nearly burnt camera and burnt camera far away respectively, makes described nearly burnt camera captured scenery and described burnt camera far away captured scenery outside described predeterminable range within predeterminable range all clear;

Nearly burnt camera and burnt camera far away, for for same scenery, take the photo of two different depth of field simultaneously;

Image synthesis unit, for synthesizing the picture of described two different depth of field to obtain the dark picture of panorama.

In conjunction with second aspect, in the first possible implementation of second aspect, described Focusing module comprises:

First driver element, for the camera lens depth-of-field guide according to described nearly burnt camera, the focusing motor stroke of described nearly burnt camera is pushed to scenery definition range within predeterminable range time described nearly burnt camera focusing motor answer in-position; And

Second driver element, for the camera lens depth-of-field guide according to described burnt camera far away, the focusing motor stroke of described burnt camera far away is pushed to scenery definition range outside described predeterminable range time described burnt camera far away focusing motor answer in-position.

In conjunction with second aspect, in the implementation that the second of second aspect is possible, described picture synthesis module comprises:

First determining unit, for determine described two different depth of field picture in the relatively high picture of the scenery definition of the same area;

Replacement unit, replace the described the same area in the relatively low picture of the scenery definition of described the same area for the described the same area in the picture that the scenery definition by described the same area is relatively high, after replacing, gained picture is the dark picture of described panorama.

In conjunction with the implementation that the second of second aspect is possible, in the third possible implementation of second aspect, described first determining unit comprises:

Threshold setting unit, for according to focusing evaluation function, arranges definition Evaluation threshold;

Second determining unit, if for compared with described definition Evaluation threshold, in picture P1, the relatively described definition Evaluation threshold of the scenery definition of the same area is higher than the relatively described definition Evaluation threshold of the scenery definition of the same area in picture P2, then determine that picture P1 is the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high.

In conjunction with the third possible implementation of the first possible implementation of second aspect, second aspect, the possible implementation of the second of second aspect or second aspect, in the 4th kind of possible implementation of second aspect, described focusing evaluation function comprises any one or several combinations in frequency spectrum function, gradient function and entropy function.

From the invention described above embodiment, come merely cut out image and/or amplify different by so-called digital zoom from prior art, the present invention is under the dark pattern of panorama, adopts burnt camera far away and nearly burnt camera two cameras to obtain the picture of same scenery respectively.Because each camera can respectively be identified oneself picture clearly in coverage, finally the picture that each camera obtains is synthesized with the deficiency making up picture captured by each camera, therefore, the present invention can not increase dual camera module size thus under not strengthening the prerequisite of terminal size and manufacturing cost, finally obtain the picture that definition is higher.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the realization flow schematic diagram of the method that use dual camera that the embodiment of the present invention one provides is taken pictures;

Fig. 2 is the structural representation of the terminal that use dual camera that the embodiment of the present invention two provides is taken pictures;

Fig. 3 is the structural representation of the terminal that use dual camera that the embodiment of the present invention three provides is taken pictures;

Fig. 4 is the structural representation of the terminal that use dual camera that the embodiment of the present invention four provides is taken pictures;

Fig. 5 is the structural representation of the terminal that use dual camera that the embodiment of the present invention five provides is taken pictures.

Embodiment

For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, and not all embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention provides the method using dual camera to take pictures, and described method comprises: under camera screening-mode is set to the dark pattern of panorama, starts nearly burnt camera and burnt camera far away; Respectively described nearly burnt camera and burnt camera far away are focused, make described nearly burnt camera captured scenery and described burnt camera far away captured scenery outside described predeterminable range within predeterminable range all clear; For same scenery, described nearly burnt camera and burnt camera far away take the picture of two different depth of field simultaneously; By the synthesis of the picture of described two different depth of field to obtain the dark picture of panorama.The embodiment of the present invention also provides the corresponding terminal using dual camera to take pictures.Below be described in detail respectively.

Refer to accompanying drawing 1, be the realization flow of the method that use dual camera that the embodiment of the present invention one provides is taken pictures, its executive agent can be a kind of terminal, such as, and smart mobile phone, panel computer etc.The method that the use dual camera of accompanying drawing 1 example is taken pictures mainly comprises the following steps S101 to step S104:

S101, under camera screening-mode is set to the dark pattern of panorama, starts nearly burnt camera and burnt camera far away.

In image processing field, the depth of field refers to the scope of blur-free imaging before and after focus point, comprise the front depth of field and the rear depth of field, wherein, the front depth of field is the definition range of (past lens direction is front) before focus point, and the rear depth of field is focus point definition range backward, and panorama is exactly that picture is all real burnt deeply, in other words, being exactly is all definition range before and after focus.In embodiments of the present invention, camera screening-mode is set to the dark pattern of panorama, object is exactly to subject be all arranged within field depth, and keep distance all clear, namely camera can obtain the dark picture of panorama.

S102, focuses to nearly burnt camera and burnt camera far away respectively, makes described nearly burnt camera captured scenery and described burnt camera far away captured scenery outside described predeterminable range within predeterminable range all clear.

In embodiments of the present invention, predeterminable range refers to the distance of default object scene distance cam lens, and such as, predeterminable range is 1 meter.As previously mentioned, because camera screening-mode is set to the dark pattern of panorama, therefore, as one embodiment of the invention, respectively nearly burnt camera and burnt camera far away are focused, comprise: according to the camera lens depth-of-field guide of nearly burnt camera, the focusing motor stroke of described nearly burnt camera is pushed to scenery definition range within predeterminable range time described nearly burnt camera focusing motor answer in-position; And according to the camera lens depth-of-field guide of burnt camera far away, the focusing motor stroke of described burnt camera far away is pushed to scenery definition range outside described predeterminable range time described burnt camera far away focusing motor answer in-position.

Usually, camera lens depth-of-field guide record is the corresponding relation of aperture-coefficient and the depth of field.In embodiments of the present invention, can by certain conversion mode, focusing motor stroke is promoted position that how many step-lengths reach and scenery definition range forms corresponding relation, be recorded in the camera lens depth-of-field guide of nearly burnt camera and burnt camera far away.Such as, suppose for nearly burnt camera, its camera lens depth-of-field guide have recorded focusing motor and promotes position that stroke 200 step-length arrives to correspond to scenery definition range be 0.4m ~ 0.8m, the above-mentioned predeterminable range of further hypothesis is 1m, then according to the camera lens depth-of-field guide of nearly burnt camera, the focusing motor stroke of described nearly burnt camera is pushed to scenery definition range within predeterminable range time described nearly burnt camera focusing motor answer in-position, exactly actual: the focusing motor focusing motor stroke of described nearly burnt camera being promoted described nearly burnt camera during 200 step-length answers in-position P n, in other words, the focusing motor in-position P of nearly burnt camera ntime, take the photograph apart from the scenery within 1m, nearly burnt camera shooting gained picture is all clearly.

Similarly, suppose for burnt camera far away, its camera lens depth-of-field guide have recorded focusing motor and promotes position that stroke 300 step-length arrives to correspond to scenery definition range be that (reality can not be infinity to 1.3m ~ ∞, only represents enough far away with ∞ herein; In following examples, the meaning of ∞ is identical therewith), the above-mentioned predeterminable range of further hypothesis is 1m, then according to the camera lens depth-of-field guide of burnt camera far away, the focusing motor stroke of described burnt camera far away is pushed to scenery definition range outside predeterminable range time described burnt camera far away focusing motor answer in-position, actual be exactly: the focusing motor focusing motor stroke of described burnt camera far away being promoted described burnt camera far away during 300 step-length answers in-position P f, in other words, the focusing motor in-position P of burnt camera far away ftime, take the photograph apart from the scenery outside 1m, burnt camera shooting gained picture far away is all clearly.

S103, for same scenery, nearly burnt camera and burnt camera far away take the picture of two different depth of field simultaneously.

S104, by the synthesis of the picture of described two different depth of field to obtain the dark picture of panorama.

As one embodiment of the invention, the synthesis of the picture of described two different depth of field is comprised the steps S1041 and step S1042 to obtain the dark picture of panorama:

S1041, determines the picture that the scenery definition of the same area in the picture of two different depth of field is relatively high.

As previously mentioned, although nearly burnt camera and burnt camera far away can according to respective camera lens depth-of-field guides, focusing motor is pushed to correct position to same scene shot, is respectively identified oneself picture clearly, but two cameras are taken the picture obtained still have difference in scenery definition.In the embodiment of the present invention, when two pictures are synthesized a pictures, first need to determine the picture that the scenery definition of the same area in the picture of two different depth of field is relatively high, concrete mode is described as follows, and comprises step S1 to step S2:

S1, according to focusing evaluation function, arranges definition Evaluation threshold.

In image processing field, when image ratio is more clear, image detail enriches, the characteristic value of neighbor is shown as (such as in spatial domain, gray scale, color etc.) change greatly, be that the high fdrequency component of frequency spectrum is many at frequency domain representation, utilize this feature that the definition of various focusing evaluation function to image can be adopted to evaluate; The definition of image is evaluated, first a definition Evaluation threshold can be set, such as, in embodiments of the present invention, suppose that the definition Evaluation threshold set is C; When the definition of picture is greater than definition Evaluation threshold C, can think that this picture is clearly.

It should be noted that, in embodiments of the present invention, focusing evaluation function can be any one or several combinations in frequency spectrum function, gradient function and entropy function, specifically can select as required.

S2, if compared with described definition Evaluation threshold, picture P 1the relatively described definition Evaluation threshold of scenery definition of middle the same area is higher than picture P 2the relatively described definition Evaluation threshold of scenery definition of middle the same area, then determine picture P 1for the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high.

For convenience of description, obtain in previous embodiment two photos that the depth of field is different are called respectively for picture P herein 1with picture P 2, and suppose picture P 1with picture P 2in the same area be assumed to be region Pz, picture P 1the scenery definition of middle region Pz is C 1, picture P 2the scenery definition of middle region Pz is C 2.Obviously, C here 1and C 2all be greater than definition Evaluation threshold C.If compared with definition Evaluation threshold C, C 1c is greater than relative to C 2relative to C, such as, C 1c is greater than with the difference of C 2with difference and the C of C 1-C is greater than C 2-C, then determine picture P 1for picture P 1with picture P 2the picture that the scenery definition of middle the same area is relatively high.

S1042, the same area in picture relatively high for the scenery definition of the same area is replaced the same area in the relatively low picture of the scenery definition of the same area, after replacing, gained picture is the dark picture of panorama.

As the example of above-mentioned steps S2, be by picture P 1in region Pz replace picture P 2in region Pz.Suppose that the picture after replacing uses P ' 1represent, then picture P ' 1be the dark picture of panorama.

From the method that the use dual camera of above-mentioned accompanying drawing 1 example is taken pictures, come merely cut out image and/or amplify different by so-called digital zoom from prior art, the present invention is under the dark pattern of panorama, adopts burnt camera far away and nearly burnt camera two cameras to obtain the picture of same scenery respectively.Because each camera can respectively be identified oneself picture clearly in coverage, finally the picture that each camera obtains is synthesized with the deficiency making up picture captured by each camera, therefore, the present invention can not increase dual camera module size thus under not strengthening the prerequisite of terminal size and manufacturing cost, finally obtain the picture that definition is higher.

Referring to accompanying drawing 2, is the structural representation of the terminal that use dual camera that the embodiment of the present invention two provides is taken pictures.For convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.The terminal that the use dual camera of accompanying drawing 2 example is taken pictures can be the executive agent of the method that use dual camera that previous embodiment provides is taken pictures, and it can be smart mobile phone, panel computer etc.The terminal that the use dual camera of accompanying drawing 2 example is taken pictures mainly comprises startup module 201, Focusing module 202, nearly burnt camera 203, burnt camera 204 far away and picture synthesis module 205, and each functional module is described in detail as follows:

Start module 201, under being set to the dark pattern of panorama at camera screening-mode, start nearly burnt camera 203 and burnt camera 204 far away.

In image processing field, the depth of field refers to the scope of blur-free imaging before and after focus point, comprise the front depth of field and the rear depth of field, wherein, the front depth of field is the definition range of (past lens direction is front) before focus point, and the rear depth of field is focus point definition range backward, and panorama is exactly that picture is all real burnt deeply, in other words, being exactly is all definition range before and after focus.In embodiments of the present invention, camera screening-mode is set to the dark pattern of panorama, object is exactly to subject be all arranged within field depth, and keep distance all clear, namely camera can obtain the dark picture of panorama.

Focusing module 202, for focusing to nearly burnt camera 203 and burnt camera 204 far away respectively, makes described nearly burnt camera 203 captured scenery and described burnt camera 204 far away captured scenery outside described predeterminable range within predeterminable range all clear.

In embodiments of the present invention, predeterminable range refers to the distance of default object scene distance cam lens, and such as, predeterminable range is 1 meter.。

Nearly burnt camera 203 and burnt camera 204 far away, for for same scenery, take the picture of two different depth of field simultaneously.

Picture synthesis module 205, for synthesizing the picture of described two different depth of field to obtain the dark picture of panorama.

It should be noted that, in the execution mode of the terminal that the use dual camera of above accompanying drawing 2 example is taken pictures, the division of each functional module only illustrates, can be as required in practical application, the facility of the such as configuration requirement of corresponding hardware or the realization of software is considered, and above-mentioned functions is distributed completed by different functional modules, the internal structure of the terminal of taking pictures by described use dual camera is divided into different functional modules, to complete all or part of function described above.And, in practical application, corresponding functional module in the present embodiment can be by corresponding hardware implementing, also can perform corresponding software by corresponding hardware to complete, such as, aforesaid Focusing module, can be have to perform aforementionedly to focus to described nearly burnt camera and burnt camera far away respectively, make described nearly burnt camera captured scenery and described burnt camera far away captured scenery hardware all clearly outside described predeterminable range within predeterminable range, such as focusing device, also can be general processor or other hardware devices that can perform corresponding computer program thus complete aforementioned function, for another example aforesaid picture synthesis module, can be that execution is described the picture of described two different depth of field is synthesized with the hardware obtaining the dark picture of panorama, such as picture synthesizer also can be general processor or other hardware devices (each embodiment that this specification provides all can apply foregoing description principle) that can perform corresponding computer program thus complete aforementioned function.

The Focusing module 202 of accompanying drawing 2 example can comprise the first driver element 301 and the second driver element 302, the terminal that the use dual camera that the embodiment of the present invention three provides as shown in Figure 3 is taken pictures, wherein:

First driver element 301, for the camera lens depth-of-field guide according to nearly burnt camera 203, nearly the focusing motor stroke of burnt camera 203 be pushed to scenery definition range within predeterminable range time nearly burnt camera 203 focusing motor answer in-position;

Second driver element 302, for the camera lens depth-of-field guide according to burnt camera 204 far away, the focusing motor stroke of burnt camera 204 far away is pushed to scenery definition range outside predeterminable range time burnt camera 204 far away focusing motor answer in-position.

Usually, camera lens depth-of-field guide record is the corresponding relation of aperture-coefficient and the depth of field.In embodiments of the present invention, can by certain conversion mode, focusing motor stroke is promoted position that how many step-lengths reach and scenery definition range forms corresponding relation, be recorded in the camera lens depth-of-field guide of nearly burnt camera and burnt camera far away.Such as, suppose for nearly burnt camera, its camera lens depth-of-field guide have recorded focusing motor and promotes position that stroke 200 step-length arrives to correspond to scenery definition range be 0.4m ~ 0.8m, the above-mentioned predeterminable range of further hypothesis is 1m, then the first driver element 301 is according to the camera lens depth-of-field guide of nearly burnt camera 203, nearly the focusing motor stroke of burnt camera 203 be pushed to scenery definition range within predeterminable range time nearly burnt camera 203 focusing motor answer in-position, actual be exactly: when nearly the focusing motor stroke of burnt camera 203 promotes 200 step-length, the focusing motor of nearly burnt camera 203 answers in-position P n, in other words, the focusing motor in-position P of nearly burnt camera 203 ntime, take the photograph apart from the scenery within 1m, it is all clearly that nearly burnt camera 203 takes gained picture.

Similarly, suppose for burnt camera 204 far away, its camera lens depth-of-field guide have recorded focusing motor and promotes position that stroke 300 step-length arrives to correspond to scenery definition range be 1.3m ~ ∞, further hypothesis predeterminable range is 1m, then the second driver element 302 is according to the camera lens depth-of-field guide of burnt camera 204 far away, the focusing motor stroke of burnt camera 204 far away is pushed to scenery definition range outside predeterminable range time burnt camera 204 far away focusing motor answer in-position, exactly actual: the focusing motor focusing motor stroke of burnt camera 204 far away being promoted burnt camera 204 far away during 300 step-length answers in-position P f, in other words, the focusing motor in-position P of 204 burnt cameras far away ftime, take the photograph apart from the scenery outside 1m, it is all clearly that burnt camera 204 far away takes gained picture.

The picture synthesis module 205 of accompanying drawing 2 example can comprise the first determining unit 401 and replacement unit 402, the terminal that the use dual camera that the embodiment of the present invention four provides as shown in Figure 4 is taken pictures, wherein:

First determining unit 401, for determine two different depth of field picture in the relatively high picture of the scenery definition of the same area.

As previously mentioned, although nearly burnt camera and burnt camera far away can according to respective camera lens depth-of-field guides, focusing motor is pushed to correct position to same scene shot, is respectively identified oneself picture clearly, but two cameras are taken the picture obtained still have difference in scenery definition.In the embodiment of the present invention, when two pictures are synthesized a pictures by picture synthesis module 205, the first determining unit 401 is first needed to determine the picture that the scenery definition of the same area in the picture of two different depth of field is relatively high.

Replacement unit 402, replace the described the same area in the relatively low picture of the scenery definition of described the same area for the described the same area in the picture that the scenery definition by the same area is relatively high, after replacing, gained picture is the dark picture of panorama.

Related description in the terminal that use dual camera as following accompanying drawing 5 example is taken pictures, replacement unit 402 is by picture P 1in region Pz replace picture P 2in region Pz; Suppose that the picture after replacing uses P ' 1represent, then picture P ' 1be the dark picture of panorama.

First determining unit 401 of accompanying drawing 4 example can comprise threshold setting unit 501 and the second determining unit 502, the terminal that the use dual camera that the embodiment of the present invention five provides as shown in Figure 5 is taken pictures, wherein:

Threshold setting unit 501, for according to focusing evaluation function, arranges definition Evaluation threshold.

In image processing field, when image ratio is more clear, image detail enriches, the characteristic value of neighbor is shown as (such as in spatial domain, gray scale, color etc.) change greatly, be that the high fdrequency component of frequency spectrum is many at frequency domain representation, utilize this feature that the definition of various focusing evaluation function to image can be adopted to evaluate; Evaluate the definition of image, threshold setting unit 501 first can be adopted to arrange a definition Evaluation threshold, such as, in embodiments of the present invention, the definition Evaluation threshold that given threshold setting unit 501 is arranged is C; When the definition of picture is greater than definition Evaluation threshold C, can think that this picture is clearly.

It should be noted that, in embodiments of the present invention, focusing evaluation function can be any one or several combinations in frequency spectrum function, gradient function and entropy function, specifically can select as required.

Second determining unit 502, if for compared with the definition Evaluation threshold that arranges with threshold setting unit 501, picture P 1the scenery definition relative articulation Evaluation threshold of middle the same area is higher than picture P 2the scenery definition relative articulation Evaluation threshold of middle the same area, then determine picture P 1it is the picture that the scenery definition of the same area in the picture of two different depth of field is relatively high.

For convenience of description, obtain in previous embodiment two photos that the depth of field is different are called respectively for picture P herein 1with picture P 2, and suppose picture P 1with picture P 2in the same area be assumed to be region Pz, picture P 1the scenery definition of middle region Pz is C 1, picture P 2the scenery definition of middle region Pz is C 2.Obviously, C here 1and C 2all be greater than definition Evaluation threshold C.If compared with definition Evaluation threshold C, C 1c is greater than relative to C 2relative to C, such as, C 1c is greater than with the difference of C 2with difference and the C of C 1-C is greater than C 2-C, then the second determining unit 502 determines picture P 1for picture P 1with picture P 2the picture that the scenery definition of middle the same area is relatively high.

It should be noted that, the content such as information interaction, implementation between each module/unit of said apparatus, due to the inventive method embodiment based on same design, its technique effect brought is identical with the inventive method embodiment, particular content see describing in the inventive method embodiment, can repeat no more herein.

Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.

If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.

Claims (10)

1. the method using dual camera to take pictures, is characterized in that, described method comprises:
Under camera screening-mode is set to the dark pattern of panorama, start nearly burnt camera and burnt camera far away;
Respectively described nearly burnt camera and burnt camera far away are focused, make described nearly burnt camera captured scenery and described burnt camera far away captured scenery outside described predeterminable range within predeterminable range all clear;
For same scenery, described nearly burnt camera and burnt camera far away take the picture of two different depth of field simultaneously;
By the synthesis of the picture of described two different depth of field to obtain the dark picture of panorama.
2. the method for claim 1, is characterized in that, describedly focuses to described nearly burnt camera and burnt camera far away respectively, comprising:
According to the camera lens depth-of-field guide of described nearly burnt camera, the focusing motor stroke of described nearly burnt camera is pushed to scenery definition range within predeterminable range time described nearly burnt camera focusing motor answer in-position; And
According to the camera lens depth-of-field guide of described burnt camera far away, the focusing motor stroke of described burnt camera far away is pushed to scenery definition range outside described predeterminable range time described burnt camera far away focusing motor answer in-position.
3. the method for claim 1, is characterized in that, described by the picture of described two different depth of field synthesis to obtain the dark picture of panorama, comprising:
Determine the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high;
Described the same area in picture relatively high for the scenery definition of described the same area is replaced the described the same area in the relatively low picture of the scenery definition of described the same area, after replacing, gained picture is the dark picture of described panorama.
4. method as claimed in claim 3, describedly determines the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high, comprising:
According to focusing evaluation function, definition Evaluation threshold is set;
If compared with described definition Evaluation threshold, in picture P1, the relatively described definition Evaluation threshold of the scenery definition of the same area is higher than the relatively described definition Evaluation threshold of the scenery definition of the same area in picture P2, then determine that picture P1 is the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high.
5. the method as described in Claims 1-4 any one, is characterized in that, described focusing evaluation function comprises any one or several combinations in frequency spectrum function, gradient function and entropy function.
6. the terminal using dual camera to take pictures, is characterized in that, described terminal comprises:
Start module, under being set to the dark pattern of panorama at camera screening-mode, start nearly burnt camera and burnt camera far away;
Focusing module, for focusing to described nearly burnt camera and burnt camera far away respectively, makes described nearly burnt camera captured scenery and described burnt camera far away captured scenery outside described predeterminable range within predeterminable range all clear;
Nearly burnt camera and burnt camera far away, for for same scenery, take the picture of two different depth of field simultaneously;
Picture synthesis module, for synthesizing the picture of described two different depth of field to obtain the dark picture of panorama.
7. terminal as claimed in claim 6, it is characterized in that, described Focusing module comprises:
First driver element, for the camera lens depth-of-field guide according to described nearly burnt camera, the focusing motor stroke of described nearly burnt camera is pushed to scenery definition range within predeterminable range time described nearly burnt camera focusing motor answer in-position; And
Second driver element, for the camera lens depth-of-field guide according to described burnt camera far away, the focusing motor stroke of described burnt camera far away is pushed to scenery definition range outside described predeterminable range time described burnt camera far away focusing motor answer in-position.
8. terminal as claimed in claim 6, it is characterized in that, described picture synthesis module comprises:
First determining unit, for determine described two different depth of field picture in the relatively high picture of the scenery definition of the same area;
Replacement unit, replace the described the same area in the relatively low picture of the scenery definition of described the same area for the described the same area in the picture that the scenery definition by described the same area is relatively high, after replacing, gained picture is the dark picture of described panorama.
9. terminal as claimed in claim 8, described first determining unit comprises:
Threshold setting unit, for according to focusing evaluation function, arranges definition Evaluation threshold;
Second determining unit, if for compared with described definition Evaluation threshold, in picture P1, the relatively described definition Evaluation threshold of the scenery definition of the same area is higher than the relatively described definition Evaluation threshold of the scenery definition of the same area in picture P2, then determine that picture P1 is the picture that the scenery definition of the same area in the picture of described two different depth of field is relatively high.
10. the terminal as described in claim 6 to 9 any one, is characterized in that, described focusing evaluation function comprises any one or several combinations in frequency spectrum function, gradient function and entropy function.
CN201410706022.XA 2014-11-28 2014-11-28 Method and terminal for photographing by virtue of two cameras CN104333703A (en)

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