CN104853089B - A kind of method and apparatus for realizing complete high definition picture - Google Patents
A kind of method and apparatus for realizing complete high definition picture Download PDFInfo
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Abstract
The invention discloses a kind of method and device for realizing complete high definition picture, it includes step：By central area, clearly the first picture obtains the first sub-pictures according to line drawing central area is cut first, and by fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；Secondly first sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition picture；Wherein the cutting line is default closed curve, and first picture or/and the second picture are divided into central area and fringe region, and first picture and second picture shoot to obtain using same camera lens center and peripheral of focusing respectively.Compared with prior art, the present invention only needs same camera lens shooting picture and then according to cutting line drawing central area and fringe region obtains the first sub-pictures and the second sub-pictures twice, realization that can fast, easy is spliced into complete high definition picture, improves user experience.
Description
Technical field
The present invention relates to shooting technology field, more particularly to a kind of method and apparatus for realizing complete high definition picture.
Background technology
At present, since camera lens is there are aberrations such as the curvature of field, cause the focal length at optical center and edge not at one in focusing
In image plane, usual lens focusing is only to center-spot, and the central area resolution ratio (or clarity) of camera lens reaches most at this time
Height, i.e. optical center are in its focal position, and the fringe region of camera lens is in its focal position, therefore the resolution of fringe region
Rate can decline.
Behind usual lens focusing center, the resolution ratio or clarity of fringe region decline 30% or more, current camera lens
It cannot accomplish central area and fringe region while most clear, even if advanced full width camera lens, its fringe region resolution ratio also can
Decline 30%, it is even more so when microspur wide-angle is taken pictures.
The content of the invention
The invention mainly solves the technical problem of providing a kind of method and apparatus for realizing complete high definition picture, Neng Goushi
Quick, the easy complete high definition picture of shooting of existing same camera lens, improves user experience.
In order to solve the above technical problems, one aspect of the present invention is to provide a kind of method, this method includes
Following steps：
By central area, clearly the first picture obtains the first sub-pictures according to line drawing central area is cut, by marginal zone
Clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures in domain；
First sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition picture；
Wherein the cutting line is default closed curve, and by centered on first picture or/and second picture division
Region and fringe region, first picture and second picture shoot to obtain using same camera lens.
Wherein, which is obtained by least the following steps：
The lens focusing is controlled to be tested under pre-set space frequency to center and obtain the first MTF curve, control the camera lens
Focus to edge, tested under pre-set space frequency and obtain the second MTF curve；
Acquisition is calculated with reference to first MTF curve and second MTF curve to cut a little, according to the sanction in the camera lens image field
Point of contact obtains the cutting line.
Wherein, pre-set space frequency be 30 lines it is right/millimeter, 100 lines are right/millimeter or 200 lines it is right/millimeter.
Wherein the cutting line is specifically obtained using at least the following steps：
The lens focusing is controlled to test and obtain multiple under pre-set space frequency and multiple image field angle of radiation to center
First MTF curve, controls the lens focusing to test and obtain under pre-set space frequency and multiple image field angle of radiation to edge
Multiple second MTF curves；
The first MTF curve under each image field angle of radiation and the second MTF curve are set to a suite line pair and calculated obtain
Cutting a little for every suite line pair must be corresponded to, to cut connection or interpolation fitting be closed curve by all, and then by closing song
Line is arranged to the cutting line；Or
The lens focusing is controlled to center, is tested under pre-set space frequency and default image field angle of radiation and obtains first
MTF curve, controls the lens focusing to edge, is tested under pre-set space frequency and default image field angle of radiation and obtains second
MTF curve；
Calculated with reference to first MTF curve and second MTF curve and obtain this and cut a little, and using the camera lens image field center as
The center of circle, using the distance cut a little with the camera lens image field center obtain circular curve as radius, and then the circular curve is set
It is set to the cutting line.
Wherein, the lens focusing is controlled to be tested under pre-set space frequency to center and obtain the first MTF curve, controlled
The lens focusing is tested under pre-set space frequency to edge and obtains concretely comprising the following steps for the second MTF curve：
Tight shot auto-focusing of the control with Focusing mechanism is tested and obtained under pre-set space frequency to central area
First MTF curve is obtained, the tight shot auto-focusing of control with Focusing mechanism is to fringe region, in pre-set space frequency
It is lower to test and obtain second MTF curve.
In order to solve the above technical problems, another technical solution used in the present invention is to provide a kind of device, the device bag
Include：
Extraction module, for clearly the first picture to obtain the first son according to line drawing central area is cut by central area
Picture, by fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；
Concatenation module, for first sub-pictures and second sub-pictures splicing synthesis to be obtained complete high definition picture；
Wherein the cutting line is default closed curve, and by centered on first picture or/and second picture division
Region and fringe region, first picture and second picture shoot to obtain using same camera lens.
Wherein, which, which further includes, obtains test curve module and cutting line computing module；
The acquisition test curve module is used to obtain the lens focusing to center, tests what is obtained under pre-set space frequency
First MTF curve, obtains the lens focusing to edge, the second MTF curve tested under pre-set space frequency；
The cutting line computing module is used to combine first MTF curve and second MTF curve calculates acquisition and cuts a little, and
Cut in the camera lens image field according to this and obtain the cutting line.
Wherein, pre-set space frequency be 30 lines it is right/millimeter, 100 lines are right/millimeter or 200 lines it is right/millimeter.
Wherein, the acquisition test curve module be specifically used for obtain the lens focusing arrive center, pre-set space frequency with
Multiple first MTF curves tested under multiple image field angle of radiation, obtain the lens focusing to edge, in pre-set space frequency
Multiple second MTF curves tested under rate and multiple image field angle of radiation；
The cutting line computing module is specifically used for the first MTF curve under each image field angle of radiation and the 2nd MTF is bent
Line is set to a suite line pair and calculates obtain corresponding cutting a little per suite line pair, and cuts connection or an interpolation fitting by all
For closed curve, and then the closed curve is arranged to the cutting line；Or
The acquisition test curve module is specifically used for obtaining the lens focusing to center, in pre-set space frequency and default picture
The first MTF curve tested under the angle of radiation of field, obtains the lens focusing to edge, in pre-set space frequency and default picture
The second MTF curve tested under the angle of radiation of field；
The cutting line computing module is specifically used for combining the first MTF curve and the calculating of the second MTF curve obtains this and cuts a little,
And using the camera lens image field center as the center of circle, the distance cut using this little with the camera lens image field center obtains circular song as radius
Line, and then the circular curve is arranged to the cutting line.
Wherein, which is specifically used for obtaining the tight shot auto-focusing with Focusing mechanism in
Heart district domain, first MTF curve tested under pre-set space frequency, obtains the tight shot with Focusing mechanism certainly
Fringe region is arrived in dynamic focusing, second MTF curve tested under pre-set space frequency.
The beneficial effects of the invention are as follows：Method provided by the invention first by central area clearly the first picture according to sanction
Tangent line extraction central area obtains the first sub-pictures, and by fringe region, clearly second picture cuts line drawing marginal zone according to this
Domain obtains the second sub-pictures；Secondly first sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition picture；Its
In the cutting line be default closed curve, and first picture or/and the second picture are divided into central area and edge
Region, first picture and second picture shoot to obtain using same camera lens.Cause center to center with existing can only focus
The technology of region high definition is compared, and the present invention is focused to center and peripheral and obtains the first of central sharp respectively using same camera lens
Picture and sharp-edged second picture, i.e., only need same camera lens shooting picture and then according to cutting line drawing central area twice
The first sub-pictures and the second sub-pictures are obtained with fringe region, realization that can fast, easy is spliced into complete high definition picture, carries
High user experience.
Brief description of the drawings
Fig. 1 is the flow diagram provided by the invention for realizing complete high definition picture approach first embodiment；
Fig. 2 a are the flow diagrams that lens focusing center obtains the first picture in Fig. 1；
Fig. 2 b are the flow diagrams that same lens focusing edge obtains second picture in Fig. 2 a；
Fig. 2 c are that Fig. 2 a and 2b obtains complete high definition figure according to splicing after line drawing obtains the first and second sub-pictures is cut
The flow diagram of piece；
Fig. 3 is the flow diagram provided by the invention for realizing complete high definition picture approach second embodiment；
Fig. 4 a are the structure diagrams of camera lens angle of radiation in Fig. 3；
Fig. 4 b are the structure diagrams of the image field angle of radiation of camera lens in Fig. 3；
Fig. 5 is to calculate the flow diagram for obtaining and cutting a little in Fig. 3 with reference to the first MTF curve and the second MTF curve；
Fig. 6 is the structure diagram provided by the invention for realizing complete high definition picture device first embodiment；
Fig. 7 is the structure diagram provided by the invention for realizing complete high definition picture device second embodiment.
Embodiment
The present invention is described in detail with embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 1 is the flow diagram of method first embodiment provided by the invention.This method includes：
Step 101：By central area, clearly the first picture obtains the first sub-pictures according to line drawing central area is cut,
By fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；
Wherein central area refers to the position of image field (or image plane) immediate vicinity of camera lens, i.e., at the optical axis of camera lens and attached
Near region；Wherein fringe region refers to the position of image field adjacent edges of the camera lens away from optical axis.
Step 102：First sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition picture；
Wherein the cutting line is default closed curve, and by centered on first picture or/and second picture division
Region and fringe region, first picture and second picture shoot to obtain using same camera lens.
Wherein closed curve of the cutting line specifically centered on the image field center of the camera lens, optional and first picture
Or there is similar shape with second picture, such as rectangle, square, or other optional polygons；Further optional envelope
Closed curve is the polygon of similar round, and using the region inside the cutting line as central area, will be located at the cutting line
Exterior region is as fringe region.
Wherein, first picture and second picture are specifically to control the lens focusing to obtain central area to center, shooting
Clearly first picture, controls the lens focusing to obtain fringe region clearly second picture to edge, shooting.
Further, it is tight shot or zoom lens that the camera lens is optional.
Wherein Fig. 2 a and 2b, are that the relatively same object of same camera lens is focused the first picture obtained to center and peripheral respectively
And second picture；Fig. 2 c be according to cut line drawing obtain splice after corresponding first sub-pictures and the second sub-pictures it is complete
Whole high definition picture." complete " referred to herein, can be critical complete, i.e., in addition to the first sub-pictures and the second sub-pictures
Without other parts.It can also be the complete of relativity, i.e., in addition to the first sub-pictures and the second sub-pictures, it can also be included
Remaining part point.
Fig. 2 a and 2b are refer to, it is the things such as bill or banknote that wherein the same object 200 (Fig. 2 a, 2b are not shown) is optional
Body, when detecting its true and false, carries out microspur wide-angle to its micro text and takes pictures, have mark with the central area of the object 200
2001 (Fig. 2 a, 2b are not shown), such as the expression of AB examples, fringe region has 2002 (Fig. 2 a, 2b are not shown) of mark, such as CD examples
Represent.So as shown in Figure 2 a, lens focusing to center, acquires central area clearly the first picture 201 at this time, wherein
Heart district domain has such as AB of mark 2011 of corresponding mark 2001, has fine definition, and its fringe region has corresponding identify
2002 mark 2012 such as CD, its clarity decline compared with central area, it is impossible to clear identification.
Wherein as shown in Figure 2 b, lens focusing identical with Fig. 2 a is controlled to obtain fringe region clearly to edge at this time
Second picture 202, its fringe region have such as CD of mark 2022 of corresponding mark 2002, have fine definition, can understand and know
Not, its central area such as AB of the mark 2021 with corresponding mark 2001, its clarity decline compared with fringe region, it is impossible to clear
Identification.
Polygon in wherein Fig. 2 a and Fig. 2 b using 210 example of cutting line as similar round illustrates, through such in Fig. 2 a
The cutting line 210 of circular polygon extracts its interior zone and obtains the first sub-pictures 2013 as central area, is passed through in Fig. 2 b
The cutting line 210 of the polygon extracts its perimeter and obtains the second sub-pictures 2023 as fringe region, first sub-pictures
2013 and second sub-pictures 2023 obtain complete high definition picture 203 after splicing, as shown in Figure 2 c, central area at this time
Mark 2011 and the mark 2022 of fringe region are respectively provided with fine definition, can understand and identify.
It is different from the situation of the prior art, the method that present embodiment provides is first by central area clearly the first picture
The first sub-pictures are obtained according to line drawing central area is cut, clearly second picture cuts line drawing according to this by fringe region
Fringe region obtains the second sub-pictures；Secondly first sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition figure
Piece；Wherein the cutting line is default closed curve, and by first picture or/and the second picture be divided into central area and
Fringe region, first picture and second picture shoot to obtain using same camera lens.Cause with existing can only focus to center
The technology of central area high definition is compared, and the present invention is focused and obtains central sharp to center and peripheral respectively using same camera lens
First picture and sharp-edged second picture, i.e., only need same camera lens shooting picture and then according to cutting line drawing center twice
Region and fringe region obtain the first sub-pictures and the second sub-pictures, and realization that can fast, easy is spliced into complete high definition figure
Piece, improves user experience.
Referring to Fig. 3, Fig. 3 is the flow diagram of method second embodiment provided by the invention.This method includes：
Step 301：Lens focusing is controlled to be tested under pre-set space frequency to center and obtain the first MTF curve, controlled
The lens focusing is tested under pre-set space frequency to edge and obtains the second MTF curve；
Wherein MTF (modulation transfer function) values reflect the contrast of camera lens in low spatial frequency such as 10 millimeters/line pair；In height
Reflect the resolution ratio of camera lens during spatial frequency such as 30 millimeters/line pair, mtf value is higher, and the resolution ratio of the camera lens is higher, it is into image quality
Amount is higher, can more obtain high-definition picture.
Wherein for image field center to the distance of measurement point, (Far Left zero, is represented as the picture of camera lens to the abscissa of MTF curve
Field center, rightmost is image field radius most edge, and size is millimeter), the image field is centered on the optical axis of the camera lens, therefore it has
There is symmetrical structure, it is identical to the pixel qualitative change law of all directions with the image field center, due to the influence of the aberration such as curvature of field etc.,
Certain point is more remote with the distance of image field center in aberration, its mtf value is generally in downward trend.In addition MTF curve generally has two,
That is S curve and M curves, are parallel to MTF curve and the lines parallel to image field tangent line that the lines of image field diameter produce respectively
The MTF curve of generation.
Wherein suitable spatial frequency include but not limited to 30 lines it is right/millimeter, 100 lines are right/millimeter or 200 lines it is right/millimeter.
Wherein, the first and second MTF curves of the camera lens are that test is completed on special MTF testers.
Step 302：Acquisition is calculated with reference to first MTF curve and second MTF curve to cut a little, and in the camera lens image field
Middle basis this cut and to obtain a cutting line.
Wherein first MTF curve and second MTF curve is that the camera lens is tested under at least one image field angle of radiation
The first MTF curve and at least one second MTF curve obtained, and according to the first MTF curve under identical image field angle of radiation
Acquisition is calculated with the second MTF curve to cut a little.Specifically, the step 301 is optional is：The lens focusing is controlled to center, pre-
If being tested under spatial frequency and multiple image field angle of radiation and obtaining multiple first MTF curves, the lens focusing is controlled to edge,
Tested under pre-set space frequency and multiple image field angle of radiation and obtain multiple second MTF curves；
The step 302 is specifically optional to be：The first MTF curve under each image field angle of radiation and the second MTF curve are set
For a suite line pair and calculate and obtain corresponding cutting a little per suite line pair, by an all connection or interpolation fittings of cutting for closing
Curve, and then the closed curve is arranged to the cutting line.
Fig. 4 a and Fig. 4 b are referred to, are the structural representation of camera lens angle of radiation and the image field angle of radiation of the camera lens respectively
Figure.As shown in fig. 4 a, choose different from optical center o a little such as point a, which is connected using optical center o and is used as camera lens benchmark
Line, it is optional using optical center o as origin, camera lens radiation is obtained clockwise or counterclockwise around camera lens datum line oa
Angle, if the camera lens angle of radiation in ob directions is θ.As shown in Figure 4 b, choose different from camera lens image field center o' a little such as
Point a', the point a' is connected as image field datum line using image field center o', and using image field center o' as origin, around the image field base
Directrix o'a' obtains the image field angle of radiation of the camera lens clockwise or counterclockwise, wherein for same camera lens, sets the camera lens base
Directrix oa is overlapping with image field datum line o'a', so that the image field angle of radiation θ ' such as o'b' directions and ob directions in camera lens
Camera lens angle of radiation θ it is identical.And then image field spoke of camera lens angle of radiation when can be according to test MTF curve pair as the camera lens
Firing angle degree, to obtain in image field cutting a little for different image field angle of radiation.
Referring to Fig. 5, Fig. 5 is that the flow signal for obtaining and cutting a little is calculated with reference to the first MTF curve and the second MTF curve
Figure.As shown in figure 5, with 135 films, illustrate exemplified by imaging area 36*24mm, it is 3 that it, which is effectively imaged diameter,:The bevel edge of 2 sizes,
The image field diameter meets 362+242=43.272, therefore the abscissa of MTF curve the largest of about 21.6mm at this time, lens focusing is in
The heart obtains the first MTF curve 501 under the first image field angle of radiation, and the position near its central area, that is, optical center has height
Mtf value, i.e., corresponding picture region have fine definition；Focus and obtain the 2nd MTF under the first image field angle of radiation to edge
Curve 502, its fringe region are that the edge away from the optical center has high mtf value, and corresponding picture region has height
Clarity；Wherein optional calculate obtains that to cut be a little point A/B near two curves, 501 and 502 intersection point C, and then will be multiple
To cut connection or interpolation fitting be closed curve to the multigroup curve obtained under image field angle of radiation to corresponding, and then by the envelope
Closed curve is set to cutting line.There is high score with the interior zone i.e. central area cut a little such as the A/B cutting lines set at this time
Resolution, to cut a little as the A/B perimeter i.e. fringe regions of cutting line set have high-resolution so that subsequently according to
The cutting line, which can splice, obtains complete high definition picture.
Please continue to refer to Fig. 5, cutting a little or at cutting line having using intersection point C as the cutting line a little obtained is cut
Identical mtf value, i.e., identical clarity, so that the picture being subsequently spliced to form improves viewing without obvious splicing trace
And recognition effect, and then improve user experience.I.e. specifically, this cut a little it is optional be combine first MTF curve and this second
MTF curve, which calculates, obtains its intersection point, and is cut a little using the intersection point as this.
The number wherein cut a little is more, and the accuracy of the cutting line is higher, and the cutting line is closer to similar round curve.It is suitable
Cutting for closing is counted out or image field angle of radiation is in a unlimited number in the specific numbers such as eight, ten or 12.
Further, optional the plurality of image field angle of radiation on camera lens image field center symmetrically or non-symmetrically.
In other embodiments, the step 301 is specifically optional is：The lens focusing is controlled to center, in pre-set space
Tested under frequency and default image field angle of radiation and obtain the first MTF curve, the lens focusing is controlled to edge, in pre-set space
Tested under frequency and default image field angle of radiation and obtain the second MTF curve；
The step 302 is specifically optional to be：Calculating acquisition with reference to the first MTF curve and the second MTF curve, this cuts a little, and with
The image field center for the center of circle, cut using this and a little obtain circular curve as radius with the distance of the image field center, and then by circle
Curve is arranged to cutting line.
Further, in other embodiments, it is optional centered on image field center, cut a little such as intersection point and the picture with this
The distance at field center obtains square or rectangular, or other polygons as the half of the length of side, and then this is square, rectangular
Shape or other polygons are arranged to the cutting line.
Wherein, the edge that a little higher than focusing edge of center highest clarity that camera lens generally there is focusing center to obtain obtains
Highest clarity, in other embodiments, the center highest clarity that optional lens focusing center obtains is equal to or less than pair
The edge highest clarity that focus side edge obtains, specifically needs the first MTF curve of testing lens focusing center acquisition and to focus side
The second MTF curve that edge obtains, so compare the maximum of first and second MTF curve with judge center highest clarity and
Edge most high-definition situation.
Wherein, first MTF curve and second MTF curve are S or/and M curves.
Step 303：By central area, clearly the first picture obtains the first sub-pictures according to line drawing central area is cut,
By fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；
Step 304：First sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition picture；
Wherein first picture and second picture shoots to obtain using the camera lens.
Specifically, optional further include after step 302, before step 303：
Step 305：The lens focusing is controlled to obtain central area clearly the first picture to center, shooting, control the mirror
Edge is arrived in head focusing, and shooting obtains fringe region clearly second picture.
Further, lens focusing is optional to include but not limited to focusing to the central area of image field center, camera lens to center
Focus to the fringe region at edge, including but not limited to focusing to image field radius most edge.I.e. above-mentioned control lens focusing is in
The optional lens focusing in order to control of the heart is to central area, above-mentioned control lens focusing to the optional lens focusing in order to control in edge to edge
Region.
It is tight shot or zoom lens that wherein the camera lens is optional, if tight shot needs to be equipped with Focusing mechanism for real
Now the auto-focusing central area of the tight shot or fringe region, if tight shot is with manual focus central area or marginal zone
Domain is without outfit Focusing mechanism；Without extra means if zoom lens such as motorized zoom lens is selected, can be achieved automatic
Or manual focus central area or fringe region.
Wherein, optionally, step 301 concretely comprises the following steps：
Tight shot auto-focusing of the control with Focusing mechanism is tested and obtained under pre-set space frequency to central area
First MTF curve is obtained, the tight shot auto-focusing of control with Focusing mechanism is to fringe region, in pre-set space frequency
It is lower to test and obtain second MTF curve.
Further, optional step 305 is specifically that control focuses or zoom lens is manually or automatically to focus to center
Domain or fringe region, and then shooting obtains central area clearly the first picture and fringe region clearly second picture respectively.
In other embodiments, step 305 is arranged on before step 303, but after being not limited to step 301, before step 302, or step
Before rapid 301.
The prior art, the situation of above-mentioned first embodiment are different from, present embodiment controls lens focusing in first
The heart, tests under pre-set space frequency and obtains the first MTF curve, the lens focusing is controlled to edge, in pre-set space frequency
It is lower to test and obtain the second MTF curve；Secondly combine first MTF curve and second MTF curve calculate acquisition cut a little, into
And cut in the camera lens image field according to this and obtain the cutting line, wherein the first MTF under optional multiple image field angle of radiation
The intersection point of curve and second MTF curve is cut a little as it, and is connected all cut and a little obtained closed curve, and then by the envelope
Closed curve is set to the cutting line, or the intersection point of optional the first MTF curve by under default angle of radiation and the second MTF curve to cut out
Point of contact, and using the camera lens image field center as the center of circle, circular curve is obtained as radius using the distance that this is cut a little with the image field center,
And then the circular curve is arranged to the cutting line；Again by central area clearly the first picture according to cutting line drawing center
Region obtains the first sub-pictures, by fringe region clearly second picture according to this cut line drawing fringe region obtain second son
Picture；First sub-pictures and second sub-pictures splicing synthesis are finally obtained into complete high definition picture；Wherein first picture
Shoot to obtain using same camera lens with second picture.Cause the technology phase of central area high definition with existing can only focus to center
Focused respectively using same camera lens than, the present invention and obtain the first picture of central sharp and sharp-edged to center and peripheral
Second picture, and obtain the first MTF curve and the second MTF curve and then calculate to cut and a little obtain cutting line, i.e., only need same mirror
Head shooting picture and then according to cutting line drawing central area and fringe region obtains the first sub-pictures and the second sub-pictures twice,
Realization that can fast, easy is spliced into complete high definition picture, and is a little cut out using the intersection point of two MTF curves as cutting
Tangent line so that the clarity of picture stitching portion is identical, without obvious splicing trace, improves user experience.
Referring to Fig. 6, Fig. 6 is the structure diagram of device first embodiment provided by the invention.The device 60 includes：
Extraction module 610, for clearly the first picture to obtain according to line drawing central area is cut by central area
One sub-pictures, by fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；
Concatenation module 620, for first sub-pictures and second sub-pictures splicing synthesis to be obtained complete high definition picture；
Wherein the cutting line is default closed curve, and by centered on first picture or/and second picture division
Region and fringe region, first picture and second picture shoot to obtain using same camera lens.
Present embodiment is a kind of device based on above-mentioned first embodiment, the extraction module 610 and the concatenation module
620 implementation steps correspond to the step 101 of above-mentioned first embodiment, the implementation steps of step 102, and details are not described herein again.
Further, which, which further includes, obtains picture module 630, for controlling the lens focusing to center, with shooting
Central area clearly first picture is obtained, controls the lens focusing to obtain fringe region to edge with shooting and clearly should
Second picture.The acquisition picture module 630 corresponds to the acquisition modes of the first picture and second picture in above-mentioned first embodiment.
The prior art, the situation of above-mentioned first and second embodiment are different from, the device that present embodiment provides passes through first
By central area, clearly the first picture obtains the first sub-pictures to extraction module according to line drawing central area is cut, by marginal zone
Clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures in domain；Secondly by concatenation module by this
One sub-pictures and second sub-pictures splicing synthesis obtain complete high definition picture；Wherein the cutting line is default closed curve,
And first picture or/and the second picture are divided into central area and fringe region, first picture and second picture are equal
Shoot to obtain using same camera lens.Compared with the existing technology for causing central area high definition that can only focus to center, the present invention makes
Focused respectively with same camera lens and obtain the first picture of central sharp and sharp-edged second picture to center and peripheral, only
Need same camera lens shooting picture and then according to cutting line drawing central area and fringe region obtains the first sub-pictures and the twice
Two sub-pictures, realization that can fast, easy are spliced into complete high definition picture, improve user experience.
Referring to Fig. 7, Fig. 7 is the structure diagram of device second embodiment provided by the invention.The device 70 includes：
Test curve module 710 is obtained, for obtaining lens focusing to center, tests what is obtained under pre-set space frequency
First MTF curve, obtains the lens focusing to edge, and the second MTF curve of acquisition is tested under pre-set space frequency；
Cutting line computing module 720, calculates acquisition and cuts a little for combining first MTF curve and second MTF curve,
And an acquisition cutting line is cut according to this in the camera lens image field；
Wherein, pre-set space frequency be 30 lines it is right/millimeter, 100 lines are right/millimeter or 200 lines it is right/millimeter；
Extraction module 730, for clearly the first picture to obtain according to line drawing central area is cut by central area
One sub-pictures, by fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；
Concatenation module 740, for first sub-pictures and second sub-pictures splicing synthesis to be obtained complete high definition picture；
Wherein first picture and second picture shoots to obtain using same camera lens.
Present embodiment is a kind of device based on above-mentioned second embodiment, the test module 710, this cut line computation
The implementation steps of module 720, the extraction module 730 and the concatenation module 740 correspond to above-mentioned second embodiment step 301,
The implementation steps of step 302, step 303 and step 304, details are not described herein again.
Wherein, which is specifically used for obtaining the lens focusing to center, in pre-set space frequency
Multiple first MTF curves with being tested under multiple image field angle of radiation, obtain the lens focusing to edge, in pre-set space
Multiple second MTF curves tested under frequency and multiple image field angle of radiation；
The cutting line computing module 720 is specifically used for the first MTF curve and the 2nd MTF under each image field angle of radiation
Curve is set to a suite line pair and calculates obtain corresponding cutting a little per suite line pair, and connection or an interpolation fitting are cut by all
For closed curve, and then the closed curve is arranged to the cutting line.Or
The acquisition test curve module 710 is specifically used for obtaining the lens focusing to center, in pre-set space frequency and in advance
If the first MTF curve tested under image field angle of radiation, the lens focusing is obtained to edge, in pre-set space frequency and in advance
If the second MTF curve tested under image field angle of radiation；
The cutting line computing module 720 is specifically used for combining first MTF curve and second MTF curve is calculated and is somebody's turn to do
Cut a little, and using the camera lens image field center as the center of circle, the distance cut using this little with the camera lens image field center is obtained as radius
Circular curve, and then the circular curve is arranged to the cutting line.
Wherein, which is specifically used for obtaining the tight shot auto-focusing with Focusing mechanism
To central area, the first MTF curve tested under pre-set space frequency, obtains the tight shot with Focusing mechanism
Auto-focusing is to fringe region, the second MTF curve tested under pre-set space frequency.
Further, which, which further includes, obtains picture module 750, for controlling the lens focusing to center, with shooting
Central area clearly first picture is obtained, controls the lens focusing to obtain fringe region to edge with shooting and clearly should
Second picture.The acquisition picture module 750 corresponds to the implementation steps of above-mentioned second embodiment step 305.
The prior art, the situation of above-mentioned first, second and third embodiment are different from, present embodiment is first by testing mould
Block is to control lens focusing to be tested under pre-set space frequency to central area and obtain the first MTF curve, to control the camera lens
Focus to fringe region, tested under pre-set space frequency and obtain the second MTF curve；Secondly by cutting line computing module knot
Close first MTF curve and second MTF curve calculates acquisition and cuts a little, and then cut according to this in the camera lens image field and a little obtained
The cutting line is obtained, wherein the intersection point of the first MTF curve under optional multiple image field angle of radiation and second MTF curve is used as it
Cut a little, and connect all cut and a little obtain closed curve, and then the closed curve is set to the cutting line, or it is optional will be default
The intersection point of the first MTF curve and the second MTF curve under angle of radiation is to cut a little, and using the camera lens image field center as the center of circle,
Circular curve is obtained as radius using the distance that this is cut a little with the image field center, and then the circular curve is arranged to this and is cut
Line；Again by extraction module, by central area, clearly the first picture obtains the first subgraph according to line drawing central area is cut
Piece, by fringe region, clearly second picture cuts line drawing fringe region according to this and obtains the second sub-pictures；Finally splice mould
First sub-pictures and second sub-pictures splicing synthesis are obtained complete high definition picture by block；Wherein first picture and the second figure
Piece shoots to obtain using same camera lens.Compared with the existing technology for causing central area high definition that can only focus to center, this hair
Bright focused respectively using same camera lens obtains the first picture of central sharp and sharp-edged second figure to center and peripheral
Piece, and obtain the first MTF curve and the second MTF curve and then calculate and cut a little as intersection point obtains cutting line, i.e. a same mirror of need
Head shooting picture and then according to cutting line drawing central area and fringe region obtains the first sub-pictures and the second sub-pictures twice,
Realization that can fast, easy is spliced into complete high definition picture, and is a little cut out using the intersection point of two curves as cutting
Tangent line so that the clarity of picture stitching portion is identical, without obvious splicing trace, improves user experience.
It these are only embodiments of the present invention, be not intended to limit the scope of the invention, it is every to utilize the present invention
The equivalent structure or equivalent flow shift that specification and accompanying drawing content are made, is directly or indirectly used in other relevant technologies
Field, is included within the scope of the present invention.
Claims (8)
- A kind of 1. method for realizing complete high definition picture, it is characterised in that including step：By central area, clearly the first picture obtains the first sub-pictures according to line drawing central area is cut, and fringe region is clear Clear second picture obtains the second sub-pictures according to the line drawing fringe region that cuts；First sub-pictures and second sub-pictures splicing synthesis are obtained into complete high definition picture；Wherein described cutting line is default closed curve, and first picture or/and the second picture be divided into Heart district domain and fringe region, first picture and second picture shoot to obtain using same camera lens；The lens focusing is controlled to be tested under pre-set space frequency to center and obtain the first MTF curve, control the camera lens Focus to edge, tested under pre-set space frequency and obtain the second MTF curve；Acquisition is calculated with reference to first MTF curve and second MTF curve to cut a little, and the basis in the camera lens image field It is described to cut an acquisition cutting line.
- 2. according to the method described in claim 1, it is characterized in that,The pre-set space frequency be 30 lines it is right/millimeter, 100 lines are right/millimeter or 200 lines it is right/millimeter.
- 3. according to the method described in claim 1, it is characterized in that,The cutting line is specifically obtained using at least the following steps：The lens focusing is controlled to be tested under pre-set space frequency and multiple image field angle of radiation to center and obtain multiple institutes The first MTF curve is stated, the lens focusing is controlled to edge, in the pre-set space frequency and multiple image field angle of radiation It is lower to test and obtain multiple second MTF curves；First MTF curve under each image field angle of radiation and second MTF curve are set to a suite line pair And calculate and obtain the described of curve pair described in corresponding every group and cut a little, and by an all connection or interpolation fittings of cutting for envelope Closed curve, and then the closed curve is arranged to the cutting line；OrThe lens focusing is controlled to center, is tested under pre-set space frequency and default image field angle of radiation and obtains described One MTF curve, controls the lens focusing to be surveyed to edge under the pre-set space frequency and the default image field angle of radiation Try and obtain second MTF curve；Calculate with reference to first MTF curve and second MTF curve and cut a little described in obtaining, and with the camera lens image field The heart obtains circular curve for the center of circle, using the distance cut a little with the camera lens image field center as radius, and then by described in Circular curve is arranged to the cutting line.
- 4. according to the method described in claim 1, it is characterized in that,The control lens focusing is tested under pre-set space frequency to center and obtains the first MTF curve, described in control Lens focusing is tested under the pre-set space frequency to edge and obtains concretely comprising the following steps for the second MTF curve：Tight shot auto-focusing of the control with Focusing mechanism is tested and obtained under the pre-set space frequency to central area Obtain first MTF curve, the tight shot auto-focusing of the control with Focusing mechanism to fringe region, described default Tested under spatial frequency and obtain second MTF curve.
- A kind of 5. device for realizing complete high definition picture, it is characterised in that including：Extraction module, for clearly the first picture to obtain the first subgraph according to line drawing central area is cut by central area Piece, by fringe region, clearly second picture obtains the second sub-pictures according to the line drawing fringe region that cuts, and described first Picture and second picture shoot to obtain using same camera lens；Concatenation module, for first sub-pictures and second sub-pictures splicing synthesis to be obtained complete high definition picture；Obtain test curve module, for obtaining the lens focusing to center, tested under pre-set space frequency the One MTF curve, obtains the lens focusing to edge, the second MTF curve tested under pre-set space frequency；The cutting line computing module, is cut for being calculated with reference to first MTF curve and second MTF curve Point, and an acquisition cutting line is cut according in the camera lens image field；Wherein described cutting line is default closed curve, and first picture or/and the second picture be divided into Heart district domain and fringe region.
- 6. device according to claim 5, it is characterised in thatThe pre-set space frequency be 30 lines it is right/millimeter, 100 lines are right/millimeter or 200 lines it is right/millimeter.
- 7. device according to claim 6, it is characterised in thatThe acquisition test curve module is specifically used for obtaining the lens focusing to center, in pre-set space frequency and multiple pictures Multiple first MTF curves tested under the angle of radiation of field, obtain the lens focusing to edge, in the default sky Between multiple second MTF curves for testing under frequency and multiple image field angle of radiation；The cutting line computing module is specifically used for first MTF curve under each image field angle of radiation and described Second MTF curve is set to a suite line pair and calculates obtain the described of curve pair described in corresponding every group and cut a little, and by all sanctions Point of contact connects or interpolation fitting is closed curve, and then the closed curve is arranged to the cutting line；OrThe acquisition test curve module is specifically used for obtaining the lens focusing to center, in the pre-set space frequency and in advance If first MTF curve tested under the image field angle of radiation, obtains the lens focusing to edge, described pre- If second MTF curve tested under spatial frequency and the default image field angle of radiation；The cutting line computing module, which is specifically used for calculating with reference to first MTF curve and second MTF curve, obtains institute State and cut a little, and using the camera lens image field center as the center of circle, using it is described cut a little with the distance of the camera lens image field center as Radius obtains circular curve, and then the circular curve is arranged to the cutting line.
- 8. device according to claim 6, it is characterised in thatThe test curve module of obtaining is specifically used for obtaining the tight shot auto-focusing with Focusing mechanism to central area, First MTF curve tested under pre-set space frequency, it is automatic to obtain the tight shot with Focusing mechanism Focus to fringe region, second MTF curve tested under pre-set space frequency.
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| JP4463790B2 (en) * | 2006-08-07 | 2010-05-19 | アキュートロジック株式会社 | MTF measurement system, MTF measurement method, MTF measurement unit, and MTF measurement program |
| CN100538436C (en) * | 2006-11-13 | 2009-09-09 | 华晶科技股份有限公司 | The optical aberration correcting system of digital camera and method |
| CN102821238B (en) * | 2012-03-19 | 2015-07-22 | 北京泰邦天地科技有限公司 | Wide-field ultra-high-resolution imaging system |
| KR101952684B1 (en) * | 2012-08-16 | 2019-02-27 | 엘지전자 주식회사 | Mobile terminal and controlling method therof, and recording medium thereof |
| CN103257511B (en) * | 2013-04-27 | 2016-01-20 | 宁波舜宇光电信息有限公司 | A kind of Atomatic focusing method based on shot field curvature |
| CN104270573A (en) * | 2014-10-27 | 2015-01-07 | 上海斐讯数据通信技术有限公司 | Multi-touch focus imaging system and method, as well as applicable mobile terminal |
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