CN104144295A - Imaging control method and device and imaging equipment - Google Patents
Imaging control method and device and imaging equipment Download PDFInfo
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- CN104144295A CN104144295A CN201410393620.6A CN201410393620A CN104144295A CN 104144295 A CN104144295 A CN 104144295A CN 201410393620 A CN201410393620 A CN 201410393620A CN 104144295 A CN104144295 A CN 104144295A
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Abstract
The embodiment of the invention discloses an imaging control method and device and imaging equipment. The imaging control method includes the steps that a first image of a target object formed in an image sensor is captured through a zoom optical assembly; part of a preview image, formed in the image sensor, of the target object is determined as a first region; the optical axis direction and the optical zoom amplification multiplying power of the zoom optical assembly are adjusted according to the first region; the adjusted zoom optical assembly captures a second image, formed in the image sensor, of a second region, and the second region is a part, corresponding to the first region, of the target object; the first image and the second image are fused, and a third image is obtained. According to the imaging control method and device and the imaging equipment, the pixel of the image sensor can be fully utilized to obtain images of the target object, wherein the images are clear in whole and difference of sharpness exists in different regions of the target object, and thus the diversified application requirements are better met for users.
Description
Technical field
The application relates to technical field of imaging, particularly relates to a kind of image formation control method and device and imaging device.
Background technology
Along with people are more and more higher to image quality requirement, the function of imaging device is also further abundant, and for example many imaging devices are supported the enlarged image of zoom functions with photographic subjects object.
Conventionally, the zoom technology of imaging device mainly comprises two kinds of Digital Zoom (Digital Zoom) and optical zooms (Optical Zoom).Digital Zoom does not change the focal length of camera lens, normally use software " interpolation " algorithm that imaging picture is amplified the partial pixel of original image sensing unit, therefore,, although the enlarged image of the destination object that employing Digital Zoom can be taken, the definition of image declines to some extent conventionally.Optical zoom normally carrys out the enlarged image of photographic subjects object along the focal length of optical axis adjustment camera lens, the definition of image can not decline conventionally.
Summary of the invention
Provide hereinafter the brief overview about the application, to the basic comprehension about some aspect of the application is provided.Should be appreciated that this general introduction is not the exhaustive general introduction about the application.It is not key or the pith that intention is determined the application, neither be intended to limit the application's scope.Its object is only that the form of simplifying provides some concept, using this as the preorder in greater detail of discussing after a while.
The application provides a kind of image formation control method and device and imaging device.
On the one hand, the embodiment of the present application provides a kind of image formation control method, comprising:
The first image becoming at imageing sensor through zoom optical module target acquisition object;
The part of determining the preview image that described destination object becomes at described imageing sensor is the firstth district;
Regulate optical axis direction and the optical zoom enlargement ratio of described zoom optical module according to described the firstth district;
Described zoom optical module after regulating is caught the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district;
Merge described the first image and described the second image, obtain the 3rd image.
On the other hand, the embodiment of the present application also provides a kind of imaging control apparatus, comprising:
One first image capture module, for the first image becoming at imageing sensor through zoom optical module target acquisition object;
One constituency determination module, the part of the preview image becoming at described imageing sensor for definite described destination object is the firstth district;
One optical parametric adjustment module, for regulating optical axis direction and the optical zoom enlargement ratio of described zoom optical module according to described the firstth district;
One second image capture module, catches for the described zoom optical module after regulating the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district;
One image co-registration module, for merging described the first image and described the second image, obtains the 3rd image.
On the one hand, the embodiment of the present application provides a kind of imaging device, comprises a zoom optical module and an imageing sensor, also comprises an above-mentioned imaging control apparatus again.
The technical scheme that the embodiment of the present application provides, can the first lower image of target acquisition object whole resolution, regulate optical axis direction and the optical amplifier multiplying power of zoom optical module according to definite regional area (being described the firstth district), the second higher image of target acquisition object local resolution more afterwards, finally merge two images and obtain the 3rd image, make full use of thus the pixel of imageing sensor, obtain the 3rd image that destination object entirety definition comparatively clear and its zones of different there are differences, described the 3rd image local definition is higher to support larger image enlargement ratio, also can meet and when the 3rd image down sampling is convenient to save image storage and transfer resource, still can keep this part to there is good definition, be to be beneficial to saving bandwidth in the situation of isometropia effect, or, the in the situation that of comparable bandwidths, improve user's experience, and then better meet the diversified application demand of user.
By the detailed description of the optional embodiment to the application below in conjunction with accompanying drawing, these of the application and other advantage will be more obvious.
Brief description of the drawings
The application can, by reference to hereinafter given description and being better understood by reference to the accompanying drawings, wherein use same or analogous Reference numeral to represent identical or similar parts in institute's drawings attached.Described accompanying drawing comprises in this manual and forms the part of this specification together with detailed description below, and is used for further illustrating the application's optional embodiment and explanation the application's principle and advantage.In the accompanying drawings:
The flow chart of a kind of image formation control method that Fig. 1 provides for the embodiment of the present application;
The logic diagram of the first imaging control apparatus that Fig. 2 provides for the embodiment of the present application;
The logic diagram of the second imaging control apparatus that Fig. 3 provides for the embodiment of the present application;
The logic diagram of the third imaging control apparatus that Fig. 4 provides for the embodiment of the present application;
The logic diagram of the 4th kind of imaging control apparatus that Fig. 5 provides for the embodiment of the present application;
The logic diagram of the 5th kind of imaging control apparatus that Fig. 6 provides for the embodiment of the present application;
The logic diagram of a kind of imaging device that Fig. 7 provides for the embodiment of the present application.
It will be appreciated by those skilled in the art that the element in accompanying drawing is only used to simply and for the purpose of clear illustrate, and not necessarily draw in proportion.For example, in accompanying drawing, the size of some element may have been amplified with respect to other elements, to contribute to improve the understanding to the embodiment of the present application.
Embodiment
In connection with accompanying drawing, the application's example embodiment is described in detail hereinafter.All features of actual execution mode are not described for clarity and conciseness, in specification.But, should understand, in the process of any this practical embodiments of exploitation, must make much decisions specific to execution mode, to realize developer's objectives, for example, meet and those restrictive conditions of system and traffic aided, and these restrictive conditions may change to some extent along with the difference of execution mode.In addition,, although will also be appreciated that development is likely very complicated and time-consuming, concerning having benefited from those skilled in the art of present disclosure, this development is only routine task.
At this, also it should be noted is that, for fear of the details because of unnecessary fuzzy the application, in accompanying drawing and explanation, only described with according to the closely-related apparatus structure of the application's scheme and/or treatment step, and omitted to the application's relation little, expression and the description of parts known to persons of ordinary skill in the art and processing.
Below in conjunction with accompanying drawing (in some accompanying drawings, identical label represents identical element) and embodiment, the application's embodiment is described in further detail.Following examples are used for illustrating the application, but are not used for limiting the application's scope.
It will be understood by those skilled in the art that the term such as " first ", " second " in the application, only for distinguishing different step, equipment or module etc., neither represents any particular technology implication, also do not represent the inevitable logical order between them.
The flow chart of a kind of image formation control method that Fig. 1 provides for the embodiment of the present application.The executive agent of the image formation control method that the embodiment of the present application provides can be a certain imaging control apparatus, described imaging control apparatus can but be not limited to take pictures, make a video recording, undertaken by carrying out this imaging control apparatus in the application process such as photography, video monitoring the imaging control of static state or dynamic image.The equipment form of expression of described imaging control apparatus is unrestricted, and for example described imaging control apparatus can be a certain independently parts, and these parts coordinate and communicate by letter with the imaging device that includes zoom optical module and imageing sensor; Or described imaging control apparatus can be used as a certain functional module and is integrated in one and includes in the imaging device of zoom optical module and imageing sensor, the embodiment of the present application does not limit this.
Specifically as shown in Figure 1, a kind of image formation control method that the embodiment of the present application provides comprises:
S101: the first image becoming at imageing sensor through zoom optical module target acquisition object.
Described zoom optical module optical axis direction can be in harmonious proportion supports the optical module of optical zoom function, in order to realize above-mentioned functions, can select suitable optical element to set up above-mentioned zoom optical module, the embodiment of the present application is set up mode to selecting of concrete optical element with light path and is not limited.Can adopt traditional imaging technique to realize to described the first image-capturing method, for example: the optical axis that keeps described zoom optical module be default position (as the intersection point of the imaging surface of optical axis and imageing sensor be as described in the center of imaging surface), focusing, exposure, obtain described the first image, described the first image is the equally distributed image of definition.
S102: the part of determining the preview image that described destination object becomes at described imageing sensor is the firstth district.
Form the preview image of described destination object at the imaging surface of imageing sensor, can determine according to actual needs that the part of described preview image is the firstth district.Region has been selected to characterize user the difference of destination object different piece definition has been expected, be convenient to select flexibly described the firstth district based on described destination object at the preview image of the imaging surface of imageing sensor, in practical application, the region that described the first common respective user in district is had relatively high expectations to image definition.
S103: the optical axis direction and the optical zoom enlargement ratio that regulate described zoom optical module according to described the firstth district.
Under different scenes, the position of the imaging surface of the relatively described imageing sensor in described the firstth district may be different, need to regulate according to described the firstth district the optical axis direction of described zoom optical module; In addition, the optical axis after need to regulating based on direction regulates optical zoom enlargement ratio, and optical zoom enlargement ratio represents that the part of destination object is in the up-sizing of described image sensing cell imaging.Optional scene for example, there is certain skew at the center of the relatively described imaging surface in the center in described the firstth district, this situation need to regulate the optical axis direction of described zoom optical module, make the optical axis after regulating be positioned at described the firstth district, the focal adjustment of follow-up like this imaging control just can make light focus in described the firstth district, the imaging focal length that regulates again afterwards described zoom optical module to be to change optical zoom enlargement ratio, is convenient to thus to obtain the amplification picture rich in detail that the part of destination object becomes at image sensing cell.
S104: the described zoom optical module after regulating is caught the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district.
After described zoom optical module regulates, exposure, catches the second image that described Second Region (being the part that described destination object is corresponding with described the firstth district) becomes at described image sensing cell.The resolution of described the second image is higher than the resolution of described the first image.The size of described the second image is greater than the size in described the firstth district and is less than or equal to the size of described the first image.
S105: merge described the first image and described the second image, obtain the 3rd image.
The coupling of two different images of resolution such as described the first image and described the second image being carried out to content characteristic etc. merges, obtain the 3rd image, described the 3rd integral image obtaining is all clearly, and the resolution of described the 3rd image part (Part I) corresponding with described the first image is higher than the resolution of part (Part II) corresponding to described the 3rd image and described the second image.
Present inventor finds in the process of putting into practice the embodiment of the present application, and the image that in conventional art, imaging device becomes is the equally distributed image of resolution normally.But under some scene, the different piece of destination object has different meanings and/or importance to user conventionally, user is not quite similar to the interest level of destination object zones of different.For example: under personage's photographed scene, user will be higher than the scenery in image to the interest level of face in image; Again for example: under the video monitoring scene of parking area, user will be higher than the roadside scenery in video image to the interest level in the region such as car plate, driver's face in video image; Etc..If improve destination object local picture quality, can adopt the mode of optical zoom to take the amplification picture rich in detail of this part, but other parts of destination object just cannot imagings or cannot blur-free imagings; If the imageing sensor collection image that employing picture element density is larger improves the overall definition of become image, the size of the image that this scheme obtains also can correspondingly increase, and can increase thus the storage of image and/or the resource burden of transmission bandwidth.
And the image formation control method that adopts the embodiment of the present application to provide, can the first lower image of target acquisition object whole resolution, regulate optical axis direction and the optical amplifier multiplying power of zoom optical module according to definite regional area (being described the firstth district), the second higher image of target acquisition object local resolution more afterwards, finally merge two images and obtain the 3rd image, make full use of thus the pixel of imageing sensor, obtain the 3rd image that destination object entirety definition comparatively clear and its zones of different there are differences, described the 3rd image local definition is higher to support larger image enlargement ratio, also can meet and when the 3rd image down sampling is convenient to save image storage and transfer resource, still can keep this part to there is good definition, be to be beneficial to saving bandwidth in the situation of isometropia effect, or, the in the situation that of comparable bandwidths, improve user's experience, and then better meet the diversified application demand of user.
In technique scheme, definite mode in described the firstth district can be determined according to actual needs, very flexible.
A kind of optional implementation, described the firstth district can determine according to region of interest (Region of Interest is called for short ROI) information, that is: obtain region of interest information; Determine that according to described region of interest information the part of described preview image is described the firstth district.Described region of interest can include but not limited to following one or more: at least one region (user who is described preview image selects district) of the described preview image that user selects, at least one region (being user's field of regard of described preview image) of described preview image that user watches attentively, imaging device detect to described preview image the region of interest obtaining automatically.This scheme determines that according to region of interest information the part of described preview image is described the firstth district, described the firstth district determining can be region corresponding with region of interest in preview image, make determining with actual user's demand of described the firstth district more identical, can better meet the application demand of user individual.
Another kind of optional implementation, described the firstth district can determine according to the result of graphical analysis, that is: described preview image be carried out to graphical analysis; Determine that according to the result of described graphical analysis the part of described preview image is described the firstth district.For example: preview image is carried out to recognition of face, according to recognition result, face district is defined as to described firstth district of this preview image.Again for example: preview image is carried out to mobile object identification, according to recognition result, the respective area of mobile object is defined as to described firstth district of this preview picture.This scheme can be determined described the firstth district according to the graphical analysis result of preview image, makes determining of described the firstth district more intelligent, improves described the firstth district definite efficiency and universality.
In technique scheme, regulate the implementation of optical axis direction of described zoom optical module very flexible according to described the firstth district.For example, can determine that the optics of described zoom optical module regulates parameter according to described the firstth district; Regulate parameter to regulate optical axis direction and the optical zoom multiplication factor of described zoom optical module according to the described optics of determining.Wherein, described optics regulates parameter to comprise: optical axis regulates parameter and optical zoom enlargement ratio; Described constituency information comprises: the positional information of selected areas and dimension information.This scheme is conducive to regulate according to first district's self adaptation optical axis direction and the optical zoom multiplication factor of zoom optical module.Further, optional, determine that according to described the firstth district the optics of described zoom optical module regulates parameter, comprising: obtain optics and regulate the mapping relations between parameter and constituency information; Determine that according to described mapping relations the described optics mating with described the firstth district regulates parameter.Described mapping relations can be obtained to external equipment, or described mapping relations can be set up in advance, and the embodiment of the present application does not limit this.This scheme determines that according to described mapping relations the optics mating with described the firstth district regulates parameter, is conducive to improve adjusting efficiency and the accuracy of optical axis direction and optical zoom multiplication factor.
Optionally, the optical axis direction that regulates described zoom optical module according to described the firstth district, comprising: regulate the optical axis direction of described zoom optical module, so that the intersection point of the imaging surface of the optical axis after regulating and described imageing sensor is positioned at described the firstth district.Optical axis direction so regulates, be conducive in follow-up focusing, the adjusting of optical zoom enlargement ratio etc. regulate, make described destination object part (as described in Second Region) imaging energy focus in image sensing cell with as described in position corresponding to the firstth district, obtain thus the amplification picture rich in detail of this part.Further, the optical axis after adjusting and the intersection point of described imaging surface can be the center in described the firstth district, this scheme be conducive to make described destination object part (as described in Second Region) as described in the imaging of imaging area corresponding to the firstth district clear as much as possible.Optionally, the center in described the firstth district is the center of circle that comprises the smallest circle in described the firstth district, because described the firstth district may be regular shape, may be also irregularly shaped, and this scheme has improved described the first district center definite efficiency and accuracy.
Optionally, described zoom optical module comprises: move lens shaft; The optical axis direction that regulates described zoom optical module, comprising: the optical axis direction that moves lens shaft described in adjusting.The described lens shaft that moves is to use inclination angle (Tilt) and skew (Shift) function to rotate camera lens to various angles and position, make the intersection point of the imaging surface of optical axis and described imageing sensor be positioned at described the firstth district (as the center in the firstth district as described in being positioned at), move focus face by the optical axis direction that moves lens shaft described in changing thus, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described zoom optical module comprises: zoom lens and prism; The optical axis direction that regulates described zoom optical module, comprising: the optical axis direction that regulates described zoom lens by rotating described prism.Described prism can be arranged on the image space of described zoom lens, can carry out deviation adjustment to the optical axis direction of described zoom lens by rotating described prism, make the intersection point of the imaging surface of optical axis and described imageing sensor be positioned at described the firstth district (as the center in the firstth district as described in being positioned at), thus by regulating optical axis direction to move focus face, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described zoom optical module comprises: liquid zoom lens; The optical axis direction that regulates described zoom optical module, comprising: by regulating the shape of described liquid zoom lens to regulate the optical axis direction of described liquid zoom lens.Described liquid zoom lens is using liquid as lens, change focal length by the curvature that changes liquid, described liquid zoom lens can include but not limited to utilize the medium wetting (Electrowetting-on-dielectric that powers on, be called for short EWOD) the varifocal optical lens of principle, it can change by applied voltage the shape of drop, and then change intersection point that its optical axis direction makes the imaging surface of optical axis and described imageing sensor and be positioned at described the firstth district (as the center in the firstth district as described in being positioned at), thereby this scheme is without moving the mobile focus face of optical axis direction by the shape that regulates liquid zoom lens in the situation of outfit mechanical part, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described zoom optical module comprises: liquid-crystal zoom lens; The optical axis direction that regulates described zoom optical module, comprising: the optical axis direction that regulates described liquid-crystal zoom lens by regulating the liquid-crystal refractive-index of described liquid-crystal zoom lens to distribute.Described liquid crystal lens is using liquid crystal as lens, by change the Liquid Crystal Molecules Alignment direction of liquid crystal layer to the certain electric field of liquid crystal layer effect, and then the overall refractive index of change liquid crystal layer, make the lensed effect of liquid crystal layer tool.This scheme can be by the orientation of liquid crystal in the external electrical field regulator solution crystal layer of control liquid crystal layer, the overall refractive index that changes thus liquid crystal layer is carried out deviation adjustment to its optical axis direction, make the intersection point of the imaging surface of optical axis and described imageing sensor be positioned at described the firstth district (as the center in the firstth district as described in being positioned at), regulate optical axis direction and mobile focus face by the refraction index profile that changes liquid crystal layer in liquid crystal lens thus, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, the described optical zoom enlargement ratio that regulates described zoom optical module according to described the firstth district, comprising: the optical zoom enlargement ratio that regulates described zoom optical module according to the position in described the firstth district and dimension information.The center of the center in described the firstth district and the imaging surface of imageing sensor may be offset to some extent, by the optical axis direction of described zoom optical module is adjusted, focus face can be adjusted into described the firstth district for imaging area mate, in addition, also can be according to the position in described the firstth district and size, regulate the optical zoom enlargement ratio of described zoom optical module, make the imaging (i.e. second image) of the part that destination object is corresponding with described the firstth district (being described Second Region) on imageing sensor large as far as possible, for example make the size of described the second image approach or equal as far as possible the size of the imaging surface of described imageing sensor, the pixel making full use of thus on described imageing sensor gathers described Second Region, improve IMAQ efficiency and the definition of described Second Region.
Further, optional, described zoom optical module comprises: liquid zoom lens; The optical zoom enlargement ratio that regulates described zoom optical module, comprising: by regulating the shape of described liquid zoom lens to change the optical zoom enlargement ratio of described liquid zoom lens.This scheme can change by applied voltage the shape of drop in liquid zoom lens, and then changes the optical zoom enlargement ratio of liquid zoom lens, to make full use of the pixel on described imageing sensor and to obtain the second image of large-size.
Optionally, described zoom optical module comprises: liquid-crystal zoom lens; The optical zoom enlargement ratio that regulates described zoom optical module, comprising: the optical zoom enlargement ratio that changes described liquid-crystal zoom lens by regulating the liquid-crystal refractive-index of described liquid-crystal zoom lens to distribute.This scheme can be by the orientation of liquid crystal in the external electrical field regulator solution crystal layer of liquid crystal layer in control liquid-crystal zoom lens, change thus the overall refractive index of liquid crystal layer to changing the optical zoom enlargement ratio of described liquid-crystal zoom lens, make full use of thus the pixel on described imageing sensor and obtain the second image of large-size.
After obtaining described the first image and described the second image, can be an image by two different resolution image co-registration, i.e. the 3rd image.The embodiment of the present application does not limit the method for concrete image co-registration, and a kind of optional implementation, can carry out up-sampling processing to described the first image according to described optical zoom enlargement ratio; Described the first image after treatment up-sampling and described the second images match are fused into described the 3rd image.The optical zoom enlargement ratio of for example described the second image is X times, can be by described the first image being carried out to the method up-sampling X such as interpolation processing doubly, by corresponding relations such as interior perhaps position features, described the second image and up-sampling described the first images match fusion after treatment are obtained to one the 3rd image more afterwards, the resolution of the Part I corresponding with described the first image in described the 3rd image, lower than the Part II corresponding with described the second image in described the 3rd image.
It will be appreciated by those skilled in the art that, in the above-mentioned either method of the application's embodiment, the sequence number size of each step does not also mean that the priority of execution sequence, the execution sequence of each step should be definite with its function and internal logic, and should not form any restriction to the implementation process of the application's embodiment.
The structured flowchart of the first imaging control apparatus that Fig. 2 provides for the embodiment of the present application.As shown in Figure 2, the optional imaging control apparatus of one that the embodiment of the present application provides comprises: one first image capture module 21, a constituency determination module 22, an optical parametric adjustment module 23, one second image capture module 24 and an image co-registration module 25.
First image of the first image capture module 21 for becoming at imageing sensor through zoom optical module target acquisition object.
The part of the preview image that constituency determination module 22 becomes at described imageing sensor for definite described destination object is the firstth district.
Optical parametric adjustment module 23 is for regulating optical axis direction and the optical zoom enlargement ratio of described zoom optical module according to described the firstth district.
The second image capture module 24 catches for the described zoom optical module after regulating the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district.The resolution of described the second image is greater than the resolution of described the first image.
Image co-registration module 25, for merging described the first image and described the second image, obtains the 3rd image.
The imaging control apparatus that the embodiment of the present application provides can the first lower image of target acquisition object whole resolution, regulate optical axis direction and the optical amplifier multiplying power of zoom optical module according to definite regional area (being described the firstth district), the second higher image of target acquisition object local resolution more afterwards, finally merge two images and obtain the 3rd image, the size of the 3rd image obtaining is relatively little, and on the 3rd image, can obtain destination object entirety comparatively clearly the definition of image and its zones of different there are differences, local definition is higher to support larger image enlargement ratio, also can meet and in the time of the 3rd image down sampling, still can keep this part to there is good definition, better meet thus the diversified application demand of user.
Described imaging control apparatus can but be not limited to take pictures, make a video recording, carry out in the application process such as photography, video monitoring the imaging control of static state or dynamic image.The equipment form of expression of described imaging control apparatus is unrestricted, and for example described imaging control apparatus can be a certain independently parts, and these parts coordinate and communicate by letter with the imaging device that includes zoom optical module and imageing sensor; Or described imaging control apparatus can be used as a certain functional module and is integrated in one and includes in the imaging device of zoom optical module and imageing sensor, the embodiment of the present application does not limit this.
Optionally, as shown in Figure 3, described constituency determination module 22 comprises: a region of interest acquisition of information submodule 221 and a trivial definite submodule 222 interested.Region of interest acquisition of information submodule 221 is for obtaining region of interest information.Trivial definite submodule 222 interested is for determining that according to described region of interest information the part of described preview image is described the firstth district.This scheme determines that according to region of interest information the part of described preview image is described the firstth district, described the firstth district determining can be region corresponding with region of interest in preview image, make determining with actual user's demand of described the firstth district more identical, can better meet the application demand of user individual.
Optionally, described constituency determination module 22 comprises: submodule 224 is determined in a graphical analysis submodule 223 and a constituency.Graphical analysis submodule 223 is for carrying out optical parametric analysis to described preview image.Constituency determines that submodule 224 is for according to the optical parametric analysis result of described preview image, and the part of determining described preview image is described the firstth district.This scheme can be determined described the firstth district according to the graphical analysis result of preview image, makes determining of described the firstth district more intelligent, improves described the firstth district definite efficiency and universality.
Optionally, as shown in Figure 4, described optical parametric adjustment module 23 comprises: an optics regulates parameter to determine that submodule 231 and an optics regulate submodule 232.Optics regulates parameter to determine that submodule 231 regulates parameter for the optics of determining described zoom optical module according to described the firstth district.Optics regulates submodule 232 for regulating parameter to regulate optical axis direction and the optical zoom multiplication factor of described zoom optical module according to the described optics of determining.This scheme is conducive to regulate according to first district's self adaptation optical axis direction and the optical zoom multiplication factor of zoom optical module.
Further, optional, described optics regulates parameter to determine that submodule 231 comprises: a mapping relations acquiring unit 2311 and an optics regulate parameter determining unit 2312.Mapping relations acquiring unit 2311 regulates the mapping relations between parameter and constituency information for obtaining optics.Optics regulates parameter determining unit 2312 to regulate parameter for determine the described optics mating with described the firstth district according to described mapping relations.This scheme determines that according to described mapping relations the optics mating with described the firstth district regulates parameter, is conducive to improve adjusting efficiency and the accuracy of optical axis direction and optical zoom multiplication factor.
Optionally, as shown in Figure 5, described optical parametric adjustment module 23 comprises: an optical axis regulates submodule 233.Optical axis regulates submodule 233 for regulating the optical axis direction of described zoom optical module, so that the intersection point of the imaging surface of the optical axis after regulating and described imageing sensor is positioned at described the firstth district.Optical axis direction so regulates, be conducive in follow-up focusing, the adjusting of optical zoom enlargement ratio etc. regulate, make described destination object part (as described in Second Region) imaging energy focus in image sensing cell with as described in position corresponding to the firstth district, obtain thus the amplification picture rich in detail of this part.
Further, optional, described zoom optical module comprises: move lens shaft; Described optical axis regulates submodule 233 to comprise: one moves lens shaft optical axis regulon 2331.Move lens shaft optical axis regulon 2331 for moving the optical axis direction of lens shaft described in regulating.This scheme is moved the optical axis direction of lens shaft by adjusting, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described zoom optical module comprises: zoom lens and prism; Described optical axis regulates submodule 233 to comprise: a prism optical axis regulon 2332.Prism optical axis regulon 2332 is for regulating the optical axis direction of described zoom lens by rotating described prism.This scheme regulates optical axis direction with mobile focus face by relay lens, focus face and described the firstth district after regulating is matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described zoom optical module comprises: liquid zoom lens; Described optical axis regulates submodule 233 to comprise: a liquid zoom lens optical axis regulon 2333.Liquid zoom lens optical axis regulon 2333 is for regulating the optical axis direction of described liquid zoom lens by the shape that regulates described liquid zoom lens.Thereby this scheme is without moving the mobile focus face of optical axis direction by the shape that regulates liquid zoom lens in the situation of outfit mechanical part, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described zoom optical module comprises: liquid-crystal zoom lens; Described optical axis regulates submodule 233 to comprise: a liquid-crystal zoom lens optical axis regulon 2334.Liquid-crystal zoom lens optical axis regulon 2334 is for distributing to regulate the optical axis direction of described liquid-crystal zoom lens by the liquid-crystal refractive-index that regulates described liquid-crystal zoom lens.This scheme regulates optical axis direction and mobile focus face by the refraction index profile that changes liquid crystal layer in liquid crystal lens, focus face and described the firstth district after regulating are matched, so that at the clear respective image that presents of the imageing sensor imaging region corresponding with described the firstth district.
Optionally, described optical parametric adjustment module 23 comprises: optical zoom enlargement ratio regulates submodule 234.Optical zoom enlargement ratio regulates submodule 234 for regulate the optical zoom enlargement ratio of described zoom optical module according to the position in described the firstth district and dimension information.
Further, optional, described zoom optical module comprises: liquid zoom lens; Described optical zoom enlargement ratio regulates submodule 234 to comprise: liquid zoom lens enlargement ratio regulon 2341.Liquid zoom lens enlargement ratio regulon 2341 is for changing the optical zoom enlargement ratio of described liquid zoom lens by the shape that regulates described liquid zoom lens.This scheme makes the imaging (i.e. second image) of the part that destination object is corresponding with described the firstth district (being described Second Region) on imageing sensor large as far as possible, for example make the size of described the second image approach or equal as far as possible the size of the imaging surface of described imageing sensor, the pixel making full use of thus on described imageing sensor gathers described Second Region, improves IMAQ efficiency and the definition of described Second Region.
Optionally, described zoom optical module comprises: liquid-crystal zoom lens; Described optical zoom enlargement ratio regulates submodule 234 to comprise: liquid-crystal zoom lens enlargement ratio regulon 2342.Liquid-crystal zoom lens enlargement ratio regulon 2342 is for distributing to change the optical zoom enlargement ratio of described liquid-crystal zoom lens by the liquid-crystal refractive-index that regulates described liquid-crystal zoom lens.This scheme can change by applied voltage the shape of drop in liquid zoom lens, and then changes the optical zoom enlargement ratio of liquid zoom lens, to make full use of the pixel on described imageing sensor and to obtain the second image of large-size.This scheme can be by the orientation of liquid crystal in the external electrical field regulator solution crystal layer of liquid crystal layer in control liquid-crystal zoom lens, change thus the overall refractive index of liquid crystal layer to changing the optical zoom enlargement ratio of described liquid-crystal zoom lens, make full use of thus the pixel on described imageing sensor and obtain the second image of large-size.
The logic diagram of the 5th kind of imaging control apparatus that Fig. 6 provides for the embodiment of the present application, the application's specific embodiment does not limit the specific implementation of imaging control apparatus 600.As shown in Figure 6, imaging control apparatus 600 can comprise:
Processor (Processor) 610, communication interface (Communications Interface) 620, memory (Memory) 630 and communication bus 640.Wherein:
Processor 610, communication interface 620 and memory 630 complete mutual communication by communication bus 640.
Communication interface 620, for such as devices communicatings such as zoom optical module, imageing sensors.
Processor 610, for executive program 632, specifically can carry out the correlation step in above-mentioned arbitrary dimming controlling method embodiment.
For example, program 632 can comprise program code, and described program code comprises computer-managed instruction.
Processor 610 may be a central processing unit (Central Processing Unit, be called for short CPU), or specific integrated circuit (Application Specific Integrated Circuit, be called for short ASIC), or be configured to implement one or more integrated circuits of the embodiment of the present application.
Memory 630, for depositing program 632.Memory 630 may comprise random access memory (Random Access Memory is called for short RAM), also may also comprise nonvolatile memory (Non-volatile memory), for example at least one magnetic disc store.
For example, in the optional implementation of one, processor 610 can be carried out following steps by executive program 632: the first image becoming at imageing sensor through zoom optical module target acquisition object; The part of determining the preview image that described destination object becomes at described imageing sensor is the firstth district; Regulate optical axis direction and the optical zoom enlargement ratio of described zoom optical module according to described the firstth district; Described zoom optical module after regulating is caught the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district; Merge described the first image and described the second image, obtain the 3rd image.In other optional implementations, processor 610 also can carry out by executive program 632 step that above-mentioned other arbitrary embodiment mention, does not repeat them here.
In program 632, the specific implementation of each step can, referring to description corresponding in the corresponding steps in above-described embodiment, module, submodule, unit, not repeat them here.Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the equipment of foregoing description and module, can describe with reference to the corresponding process in preceding method embodiment, does not repeat them here.
The logic diagram of a kind of imaging device that Fig. 7 provides for the embodiment of the present application, as shown in Figure 7, imaging device comprises a zoom optical module 71, an imaging control apparatus 72 and an imageing sensor 73.Described zoom optical module 71 optical axis directions can be in harmonious proportion supports the optical module of optical zoom function, in order to realize above-mentioned functions, can select suitable optical element to set up above-mentioned zoom optical module, the embodiment of the present application is set up mode to selecting of concrete optical element with light path and is not limited.For example described zoom optical module can comprise that traditional Zoom optic lens coordinates prism to regulate its optical axis direction, or, described zoom optical module can comprise and moves lens shaft, the described lens shaft that moves can change its optical axis direction and optical zoom enlargement ratio, or, described zoom optical module can comprise liquid zoom lens, can change its optical axis direction and optical zoom enlargement ratio by changing the shape of described liquid zoom lens, or, described zoom optical module can comprise liquid crystal zoom lens, change its optical axis direction and optical zoom enlargement ratio by changing the refraction index profile of liquid crystal layer in described liquid crystal zoom lens, etc..Described imaging control apparatus imaging control apparatus can have figure as arbitrary in Fig. 2-Fig. 6 and the described structure of corresponding literature record thereof.
The imaging device that the embodiment of the present application provides can the first lower image of target acquisition object whole resolution, regulate optical axis direction and the optical amplifier multiplying power of zoom optical module according to definite regional area (being described the firstth district), the second higher image of target acquisition object local resolution more afterwards, finally merges two images and obtains the 3rd image.The pixel that this scheme makes full use of described imageing sensor obtains the 3rd image that destination object entirety definition comparatively clear and its zones of different there are differences, described the 3rd image local definition is higher to support larger image enlargement ratio, also can meet and when the 3rd image down sampling is convenient to save image storage and transfer resource, still can keep this part to there is good definition, better meet thus the diversified application demand of user.
In the application's the various embodiments described above, the sequence number of embodiment and/or sequencing are only convenient to describe, and do not represent the quality of embodiment.Description to each embodiment all emphasizes particularly on different fields, and there is no the part of detailed description in certain embodiment, can be referring to the associated description of other embodiment.The enforcement principle of relative assembly, equipment or system embodiment or the associated description of process, can, referring to the record of correlation method embodiment, not repeat them here.
Those of ordinary skill in the art can recognize, unit and the method step of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can realize described function with distinct methods to each specifically should being used for, but this realization should not thought and exceeds the application's scope.
If described function realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the part that the application's technical scheme contributes to prior art in essence in other words or the part of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory, be called for short ROM), the various media that can be program code stored such as random access memory (Random Access Memory, be called for short RAM), magnetic disc or CD.
In the embodiment such as the application's device, method, system, obviously, each parts (system, subsystem, module, submodule, unit, subelement etc.) or each step reconfigure after can decomposing, combine and/or decomposing.These decomposition and/or reconfigure the equivalents that should be considered as the application.Simultaneously, in the above in the description of the application's specific embodiment, describe and/or the feature that illustrates can be used in same or similar mode in one or more other execution mode for a kind of execution mode, combined with the feature in other execution mode, or substitute the feature in other execution mode.
Should emphasize, term " comprises/comprises " existence that refers to feature, key element, step or assembly while use herein, but does not get rid of the existence of one or more further feature, key element, step or assembly or add.
Finally it should be noted that: above execution mode is only for illustrating the application; and the not restriction to the application; the those of ordinary skill in relevant technologies field; in the case of not departing from the application's spirit and scope; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to the application's category, and the application's scope of patent protection should be defined by the claims.
Claims (30)
1. an image formation control method, is characterized in that, comprising:
The first image becoming at imageing sensor through zoom optical module target acquisition object;
The part of determining the preview image that described destination object becomes at described imageing sensor is the firstth district;
Regulate optical axis direction and the optical zoom enlargement ratio of described zoom optical module according to described the firstth district;
Described zoom optical module after regulating is caught the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district;
Merge described the first image and described the second image, obtain the 3rd image.
2. image formation control method according to claim 1, is characterized in that, the part of determining described preview image is described the firstth district, comprising:
Obtain region of interest information;
Determine that according to described region of interest information the part of described preview image is described the firstth district.
3. image formation control method according to claim 1, is characterized in that, the part of determining described preview image is described the firstth district, comprising:
Described preview image is carried out to optical parametric analysis;
According to the optical parametric analysis result of described preview image, the part of determining described preview image is described the firstth district.
4. according to the arbitrary described image formation control method of claim 1-3, it is characterized in that, the optical axis direction and the optical zoom multiplication factor that regulate described zoom optical module according to described the firstth district, comprising:
The optics of determining described zoom optical module according to described the firstth district regulates parameter;
Regulate parameter to regulate optical axis direction and the optical zoom multiplication factor of described zoom optical module according to the described optics of determining.
5. image formation control method according to claim 4, is characterized in that, determines that the optics of described zoom optical module regulates parameter according to described the firstth district, comprising:
Obtain optics and regulate the mapping relations between parameter and constituency information;
Determine that according to described mapping relations the described optics mating with described the firstth district regulates parameter.
6. image formation control method according to claim 5, is characterized in that,
Described optics regulates parameter to comprise: optical axis regulates parameter and optical zoom enlargement ratio;
Described constituency information comprises: the positional information of selected areas and dimension information.
7. according to the arbitrary described image formation control method of claim 1-3, it is characterized in that, the optical axis direction that regulates described zoom optical module according to described the firstth district, comprising:
Regulate the optical axis direction of described zoom optical module, so that the intersection point of the imaging surface of the optical axis after regulating and described imageing sensor is positioned at described the firstth district.
8. image formation control method according to claim 7, is characterized in that, the optical axis after adjusting and the intersection point of described imaging surface are the center in described the firstth district.
9. image formation control method according to claim 8, is characterized in that, the center in described the firstth district is the center of circle that comprises the smallest circle in described the firstth district.
10. according to the arbitrary described image formation control method of claim 7-9, it is characterized in that,
Described zoom optical module comprises: move lens shaft;
The optical axis direction that regulates described zoom optical module, comprising: the optical axis direction that moves lens shaft described in adjusting.
11. according to the arbitrary described image formation control method of claim 7-9, it is characterized in that,
Described zoom optical module comprises: zoom lens and prism;
The optical axis direction that regulates described zoom optical module, comprising: the optical axis direction that regulates described zoom lens by rotating described prism.
12. according to the arbitrary described image formation control method of claim 7-9, it is characterized in that,
Described zoom optical module comprises: liquid zoom lens;
The optical axis direction that regulates described zoom optical module, comprising: by regulating the shape of described liquid zoom lens to regulate the optical axis direction of described liquid zoom lens.
13. according to the arbitrary described image formation control method of claim 7-9, it is characterized in that,
Described zoom optical module comprises: liquid-crystal zoom lens;
The optical axis direction that regulates described zoom optical module, comprising: the optical axis direction that regulates described liquid-crystal zoom lens by regulating the liquid-crystal refractive-index of described liquid-crystal zoom lens to distribute.
14. according to the arbitrary described image formation control method of claim 1-13, it is characterized in that, the described optical zoom enlargement ratio that regulates described zoom optical module according to described the firstth district, comprising:
Regulate the optical zoom enlargement ratio of described zoom optical module according to the position in described the firstth district and dimension information.
15. image formation control methods according to claim 14, is characterized in that,
Described zoom optical module comprises: liquid zoom lens;
The optical zoom enlargement ratio that regulates described zoom optical module, comprising: by regulating the shape of described liquid zoom lens to change the optical zoom enlargement ratio of described liquid zoom lens.
16. image formation control methods according to claim 14, is characterized in that,
Described zoom optical module comprises: liquid-crystal zoom lens;
The optical zoom enlargement ratio that regulates described zoom optical module, comprising: the optical zoom enlargement ratio that changes described liquid-crystal zoom lens by regulating the liquid-crystal refractive-index of described liquid-crystal zoom lens to distribute.
17. 1 kinds of imaging control apparatus, is characterized in that, comprising:
One first image capture module, for the first image becoming at imageing sensor through zoom optical module target acquisition object;
One constituency determination module, the part of the preview image becoming at described imageing sensor for definite described destination object is the firstth district;
One optical parametric adjustment module, for regulating optical axis direction and the optical zoom enlargement ratio of described zoom optical module according to described the firstth district;
One second image capture module, catches for the described zoom optical module after regulating the second image that Second Region becomes at described imageing sensor, and described Second Region is the part that described destination object is corresponding with described the firstth district;
One image co-registration module, for merging described the first image and described the second image, obtains the 3rd image.
18. imaging control apparatus according to claim 17, is characterized in that, described constituency determination module comprises:
One region of interest acquisition of information submodule, for obtaining region of interest information;
One trivial definite submodule interested, for determining that according to described region of interest information the part of described preview image is described the firstth district.
19. imaging control apparatus according to claim 17, is characterized in that, described constituency determination module comprises:
One graphical analysis submodule, for carrying out optical parametric analysis to described preview image;
Submodule is determined in one constituency, and for according to the optical parametric analysis result of described preview image, the part of determining described preview image is described the firstth district.
20. according to the arbitrary described imaging control apparatus of claim 17-19, it is characterized in that, described optical parametric adjustment module comprises:
One optics regulates parameter to determine submodule, regulates parameter for the optics of determining described zoom optical module according to described the firstth district;
One optics regulates submodule, for regulating parameter to regulate optical axis direction and the optical zoom multiplication factor of described zoom optical module according to the described optics of determining.
21. imaging control apparatus according to claim 20, is characterized in that, described optics regulates parameter to determine that submodule comprises:
One mapping relations acquiring unit, regulates the mapping relations between parameter and constituency information for obtaining optics;
One optics regulates parameter determining unit, for determining that according to described mapping relations the described optics mating with described the firstth district regulates parameter.
22. according to the arbitrary described imaging control apparatus of claim 17-19, it is characterized in that, described optical parametric adjustment module comprises:
One optical axis regulates submodule, for regulating the optical axis direction of described zoom optical module, so that the intersection point of the imaging surface of the optical axis after regulating and described imageing sensor is positioned at described the firstth district.
23. imaging control apparatus according to claim 22, is characterized in that,
Described zoom optical module comprises: move lens shaft;
Described optical axis regulates submodule to comprise: one moves lens shaft optical axis regulon, for moving the optical axis direction of lens shaft described in regulating.
24. imaging control apparatus according to claim 22, is characterized in that,
Described zoom optical module comprises: zoom lens and prism;
Described optical axis regulates submodule to comprise: a prism optical axis regulon, and for regulate the optical axis direction of described zoom lens by rotating described prism.
25. imaging control apparatus according to claim 22, is characterized in that,
Described zoom optical module comprises: liquid zoom lens;
Described optical axis regulates submodule to comprise: a liquid zoom lens optical axis regulon, and for regulate the optical axis direction of described liquid zoom lens by the shape that regulates described liquid zoom lens.
26. imaging control apparatus according to claim 22, is characterized in that,
Described zoom optical module comprises: liquid-crystal zoom lens;
Described optical axis regulates submodule to comprise: a liquid-crystal zoom lens optical axis regulon, and for distribute to regulate the optical axis direction of described liquid-crystal zoom lens by the liquid-crystal refractive-index that regulates described liquid-crystal zoom lens.
27. according to the arbitrary described imaging control apparatus of claim 17-26, it is characterized in that, described optical parametric adjustment module comprises:
One optical zoom enlargement ratio regulates submodule, for regulate the optical zoom enlargement ratio of described zoom optical module according to the position in described the firstth district and dimension information.
28. imaging control apparatus according to claim 27, is characterized in that,
Described zoom optical module comprises: liquid zoom lens;
Described optical zoom enlargement ratio regulates submodule to comprise: liquid zoom lens enlargement ratio regulon, and for change the optical zoom enlargement ratio of described liquid zoom lens by the shape that regulates described liquid zoom lens.
29. imaging control apparatus according to claim 27, is characterized in that,
Described zoom optical module comprises: liquid-crystal zoom lens;
Described optical zoom enlargement ratio regulates submodule to comprise: liquid zoom lens enlargement ratio regulon, and for distribute to change the optical zoom enlargement ratio of described liquid-crystal zoom lens by the liquid-crystal refractive-index that regulates described liquid-crystal zoom lens.
30. 1 kinds of imaging devices, comprise a zoom optical module and an imageing sensor, it is characterized in that, also comprise: just like the arbitrary described imaging control apparatus of claim 17-29.
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