CN202172446U - Wide angle photographing apparatus - Google Patents
Wide angle photographing apparatus Download PDFInfo
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- CN202172446U CN202172446U CN2011203190781U CN201120319078U CN202172446U CN 202172446 U CN202172446 U CN 202172446U CN 2011203190781 U CN2011203190781 U CN 2011203190781U CN 201120319078 U CN201120319078 U CN 201120319078U CN 202172446 U CN202172446 U CN 202172446U
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Abstract
The embodiment of the utility model relates to a wide angle photographing apparatus, which realizes low cost and efficient wide angle photographing. The wide angle photographing apparatus comprises a double-photographing module group and an image processor. The double-photographing module group includes a pick-up head A and a pick-up head B, which rotate towards the two sides along the horizontal line and with an imaging point as the center, and are used for acquisition of basic images, and the acquisition results are labeled as an image A and an image B. The image processor includes a characteristic points extraction unit used for extracting the characteristic points of the image A and the image B; a mapping matrix calculating unit used for calculating the mapping relation between the image A and the image B; and an image fusion and processing unit used for fusion of the image A and the image B.
Description
Technical field
The utility model embodiment relates to the mobile communication terminal field, particularly a kind of wide-angle camera arrangement.
Background technology
Along with the continuous development of camera work, requiring of effect that people's comparison film is taken and convenience is increasingly high.In general, the visual angle of common lens has been difficult to satisfy the needs of people in scene shooting, building shooting and indoor shot.People just need to use wide-angle lens in order in the process of photograph taking, to obtain more wide visual field.The focal length of wide-angle lens is generally the 38-24 millimeter, and the visual angle is the 60-84 degree, because its focal length is short; The visual angle is big; In short shooting distance scope, can photograph the larger area object, and have the bigger depth of field; Can produce the unique visual effects that is different from common lens, receive people's popular welcome.
But because wide-angle lens has higher cost of manufacture, thereby can't be applicable on a large scale in the terminal equipments such as regular handset, panel computer.Be limited by considering of cost, the common camera that still is mounted with non-wide-angle lens that in various terminal equipments, generally adopts at present.Therefore; A kind of technology that forms wide angle picture that merges through software is provided in the prior art; Promptly adopt with photographer is that center, the mode of rotating certain visual angle are taken the photo that several have intersection; Utilizing software algorithm that above-mentioned multiple photos is merged at last becomes a photo, takes pictures to realize wide-angle.But above-mentioned wide-angle shooting style needs rotating camera, thereby can not be Polaroid, and the shooting cycle is longer, can't realize capturing, and photographer's shooting technology is had relatively high expectations.
Summary of the invention
The embodiment of the utility model provides a kind of wide angle shot device, comprises two shooting modules and image processor.Wherein, said two shooting modules comprise camera A and camera B, and said camera A and camera B are the rotations of middle mind-set both sides along horizontal line with imaging point respectively, make and form angle between the two.Said image processor is used for two photos that two shooting modules are taken wide-angle photo that permeates.
Through the technical scheme that above-mentioned the utility model embodiment provides, can be implemented in and use two lower-cost common cameras to take the wide-angle photo on the terminal equipment, and said process is convenient and swift, can be Polaroid, have higher shooting efficient.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
The structure chart of the disclosed wide angle shot device of Fig. 1 the utility model embodiment;
The workflow of two shooting modules among Fig. 2 the utility model embodiment;
The workflow of image processor among Fig. 3 the utility model embodiment;
The structural relation of camera A, B in two shooting modules among Fig. 4 the utility model embodiment;
The structure chart of two shooting modules of rotatable camera among Fig. 5 the utility model embodiment;
The structure chart of image processor among Fig. 6 the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, the utility model specific embodiment is done further detailed description below in conjunction with accompanying drawing.
As shown in Figure 1, the embodiment of the utility model provides a kind of wide angle shot device, comprising: dual camera module 11 and image processor 12.Wherein, two shooting modules 11 comprise camera A and camera B, and are as shown in Figure 2, and camera A and camera B take with same parameter simultaneously, obtain image A and image B, and different but its picture in the visual angle of image A and image B overlaps to some extent.Said image A and image B transfer to together in the image processor 12 and handle.After image processor 12 received image A and image B, as shown in Figure 3, through feature point extraction, mapping matrix calculated and image co-registration is handled, and image A and image B are spliced the comparatively natural photo of a transition that permeates.
Fig. 4 is the sketch map of dual camera module 11 among the utility model embodiment.The visual angle of camera A, B is α, and the distance between its imaging point is d, and the distance between camera and the reference object is h.Camera A is positioned at the module left side, is that the center is rotated counterclockwise Δ α with the imaging point along horizontal line; Camera B is positioned at the module right side, is the center Δ α that turns clockwise with the imaging point along horizontal line.For having the part that overlaps between the imaging that guarantees camera A, B to accomplish the amalgamation of image, the scope of Δ α should be greater than 0 °, simultaneously less than a maximum angle Δ α
Max, can know that through calculating this maximum angle does
When for example d was 0.015m, the imaging at the 0.15m place if desired can obtain Δ α according to calculating
Max20 ° of ≈, the promptly maximum anglec of rotation is 20 °.
After camera A, the B rotation, the visual angle maximum of the two formation can reach ∠ GOH, is designated as γ
MaxCorresponding is that the minimal visual angle of shooting is γ
MinGeneral, when shooting scape distance was h, the visual angle was designated as γ
h, thus, can obtain through calculating:
γ
Min=α formula 1.2
For example, when the visual angle of single mode group α is 45 °, Δ α is 20 °, and h is 3m, during d=1.5cm, can calculate through above-mentioned formula: γ
Max88 ° of ≈, γ
h85 ° of ≈, γ
Min=α=45 °.Therefore can find out that the utility model embodiment can obtain through the merging at two camera visual angles than wide angular field of view on single shooting first watch really, realize the effect of wide-angle.
Because image processor has correlation for the imaging of two cameras of processing requirements of photo; Be that content between image A and the image B need have superposed part; Therefore whole system has certain restriction to the relation of d and h; Relation between them is following:
suppose that working as α is 45 °; Δ α is 20 °; When h located to form images more than 0.15m, result of calculation d＜0.13m promptly can not surpass 0.13m apart between two cameras.
Relation between above-mentioned camera A and the camera B both can be a fixed angle, also can be adjustable angle.For the camera of adjustable angle, its adjustment can realize that as shown in Figure 5, this pair shooting module also comprises first rotating shaft, second rotating shaft and rotating control assembly through the mode that rotating shaft is set.Said rotating control assembly both can be controlled camera A and camera B respectively, also can adopt linkage unified control camera A and camera B.
Fig. 5 is the structural representation of image processor 12 among the utility model embodiment.Image processor 12 comprises feature point extraction unit, mapping matrix computing unit and image co-registration and processing unit.Wherein:
Said feature point extraction unit is used to extract the characteristic point of image A and image B.Characteristic point is some the special points on the image, and such as the point of object, some Gray Level Jump points etc., on the position of these points, the one dimension of image or two-dimentional differential have maximum value or minimum value.The concrete definition mode of the characteristic point operator used with obtaining characteristic point is relevant.For example, use the operator of Harris Corner Detection operator calculated characteristics point following:
Wherein (x is that ((x y) is Gaussian function to w to point on image A or the image B, and Ix, Iy are respectively point (x, y) differential on last x, the y direction for x, the gray value of y) locating y) to I.The size of two characteristic values of matrix M has been represented this point, and (size of this characteristic value is directly proportional with the principal curvatures of matrix for x, the degree that highlights y).To the characteristic value of the calculating of the every bit in image correlation matrix M, if two characteristic values all are exactly greatly angle point, i.e. characteristic point; Small one and large one is exactly a line as if two characteristic values; If two characteristic values are all little, change image-region slowly exactly.
Following formula is used in the judgement of characteristic value size:
R＝detM-k(traceM)
2
Wherein detM is the determinant of matrix M, equals the product of two characteristic values; TraceM is a matrix trace, be two characteristic values with; K is a test parameters value, gets 0.04 o'clock at k, and the correlation of two characteristic values of R and M is the strongest.Determination methods is: compare with R and preset threshold, if then be regarded as characteristic point greater than threshold value.Above-mentioned threshold value is an experimental data, from the rational critical value data that draw after repeatedly testing, and is further obtaining revising in the experiment.
When realizing, based on the consideration of efficient, the point that can a computed image A right half part and the point of image B left-half.
Said mapping matrix computing unit is used for the mapping relations between computed image A and the image B.At first, can produce bigger error, therefore before calculating mapping matrix, need earlier characteristic point to be carried out packet transaction because the independent characteristic point of extracting in the feature point extraction unit is compared coupling.At first the size according to the R value sorts to characteristic point, in regular turn characteristic point is divided into groups by every group of N then, and the characteristic point after dividing into groups is calculated its physical centre.Can draw one group of less and error is less characteristic value like this.The numerical value of above-mentioned N is according to the operational capability of the quality of required image and image processor and different.
Afterwards, between two width of cloth images, mate and shine upon for above-mentioned characteristic value.Mapping relations between two width of cloth images are following:
Wherein H is the position relation of image mapped, and H has 8 degrees of freedom, and four pairs of characteristic points of minimum only needs can calculate H, realize the coupling of image A and image B.
Said image co-registration and processing unit are used to realize the fusion between image A and the image B.After the numerical value of above-mentioned H is confirmed, promptly confirmed the mapping position relation between image A and the image B, can according to the numerical value of H in image co-registration and processing unit with two width of cloth image co-registration together.When merging, consider the natural transition of image mosaic part, need carry out special processing at the fusion fringe region.For example, (mode of α-blending) is handled can to adopt transparency stack.
Supposing to merge reference map is image A, and reference diagram is an image B, need be in image A when merging with the data map of image B, and overlapping pixel portion carried out transparent stack.If I
aBe the point in the image A, I
bBe the point in the image B, I is the point after superposeing, and then the formula of stack is:
I＝(1-β)I
a(x，y)+βI
b(x，y)
Wherein β=d (x, o)/w, d (x, o) be (x, y) at x apart from the distance of reference map A at the central point of x direction, w is the half the of image A width.
Through the computing of above-mentioned three unit, image processor has just permeated the comparatively natural photo of a transition with two photomosaics that photograph in above-mentioned two photography modules.The utility model embodiment has realized by a shutter that under the situation of not using expensive wide-angle lens the function of output wide-angle photo has improved terminal equipment and carried out the efficient that wide-angle is taken pictures.
Above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.
Claims (11)
1. a camera arrangement is characterized in that, said camera arrangement comprises two shooting modules and image processor, and said two shooting modules comprise camera A and camera B, and d separated by a distance is set up in parallel in the middle of said camera A and the camera B.
2. camera arrangement as claimed in claim 1; It is characterized in that; The anglec of rotation Δ α of camera A and camera B should be greater than 0 ° in said two shooting module; Simultaneously less than
wherein h be two distances of making a video recording between modules and the reference object; D is the distance between the imaging point of camera A and camera B, and α is the visual angle of camera A, B.
3. camera arrangement as claimed in claim 1; It is characterized in that; Between camera A and the camera B should be apart from d less than
wherein h be the distances between two shooting modules and the reference object; α is the visual angle of camera A, B, and Δ α is the angle that camera A, B rotate laterally.
4. camera arrangement as claimed in claim 1 is characterized in that, said two shooting modules also comprise first rotating shaft, second rotating shaft and rotating control assembly, is used to realize the angle control to camera A, camera B.
5. camera arrangement as claimed in claim 4 is characterized in that, said rotating control assembly is controlled camera A and camera B respectively.
6. camera arrangement as claimed in claim 4 is characterized in that, comprises linkage in the said rotating control assembly, can realize jointly controlling camera A and camera B.
7. camera arrangement as claimed in claim 1 is characterized in that, said camera A and camera B are installed in said two shooting module with fixed angle.
8. camera arrangement as claimed in claim 1 is characterized in that, said image processor is made up of following three unit:
The feature point extraction unit is used for extracting the characteristic point of image;
The mapping matrix computing unit is used to calculate the mapping relations matrix between two width of cloth images;
Image co-registration and processing unit are used for image co-registration and edge treated.
9. camera arrangement as claimed in claim 8 is characterized in that, said feature point extraction unit uses Harris Corner Detection operator calculated characteristics point.
10. camera arrangement as claimed in claim 8 is characterized in that, said mapping matrix computing unit divides into groups to above-mentioned characteristic point and calculates mapping relations.
11. camera arrangement as claimed in claim 8 is characterized in that, said image co-registration and processing unit are with image A and image B merges and fringe region is carried out special processing to realize the nature transition.
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| CN2011203190781U CN202172446U (en) | 2011-08-29 | 2011-08-29 | Wide angle photographing apparatus |
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| CN2011203190781U CN202172446U (en) | 2011-08-29 | 2011-08-29 | Wide angle photographing apparatus |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103581601A (en) * | 2013-10-24 | 2014-02-12 | 南京熊猫电子股份有限公司 | Split screen scanning method for UHD signal sampling and displaying |
| WO2017067520A1 (en) * | 2015-10-22 | 2017-04-27 | 努比亚技术有限公司 | Mobile terminal having binocular cameras and photographing method therefor |
| CN106851079A (en) * | 2017-04-10 | 2017-06-13 | 深圳市世纪佳华电子科技有限公司 | A kind of wide-angle imaging system |
| CN107483821A (en) * | 2017-08-25 | 2017-12-15 | 维沃移动通信有限公司 | Image processing method and mobile terminal |
| CN108205801A (en) * | 2017-12-27 | 2018-06-26 | 中兴通讯股份有限公司 | A kind of method and terminal for supporting image mosaic |
| US10063783B2 (en) | 2015-09-30 | 2018-08-28 | Apple Inc. | Mobile zoom using multiple optical image stabilization cameras |
| US10264188B2 (en) | 2015-09-30 | 2019-04-16 | Apple Inc. | Mobile zoom using multiple optical image stabilization cameras |
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| CN110493525A (en) * | 2019-09-04 | 2019-11-22 | 展讯通信（上海）有限公司 | Zoom image determines method and device, storage medium, terminal |
| US10516826B2 (en) | 2015-02-13 | 2019-12-24 | Apple Inc. | Dual camera magnet arrangement |
| EP3687154A1 (en) * | 2019-01-25 | 2020-07-29 | Beijing Xiaomi Mobile Software Co., Ltd. | Camera assembly and terminal |
| CN111491094A (en) * | 2019-01-28 | 2020-08-04 | 北京小米移动软件有限公司 | Camera module and terminal |
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| CN103581601A (en) * | 2013-10-24 | 2014-02-12 | 南京熊猫电子股份有限公司 | Split screen scanning method for UHD signal sampling and displaying |
| US10931877B2 (en) | 2015-02-13 | 2021-02-23 | Apple Inc. | Dual camera magnet arrangement |
| US11381747B2 (en) | 2015-02-13 | 2022-07-05 | Apple Inc. | Dual camera magnet arrangement |
| US10516826B2 (en) | 2015-02-13 | 2019-12-24 | Apple Inc. | Dual camera magnet arrangement |
| US10264188B2 (en) | 2015-09-30 | 2019-04-16 | Apple Inc. | Mobile zoom using multiple optical image stabilization cameras |
| US10063783B2 (en) | 2015-09-30 | 2018-08-28 | Apple Inc. | Mobile zoom using multiple optical image stabilization cameras |
| US10382698B2 (en) | 2015-09-30 | 2019-08-13 | Apple Inc. | Mobile zoom using multiple optical image stabilization cameras |
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| US10750096B2 (en) | 2015-09-30 | 2020-08-18 | Apple Inc. | Mobile zoom using multiple optical image stabilization cameras |
| WO2017067520A1 (en) * | 2015-10-22 | 2017-04-27 | 努比亚技术有限公司 | Mobile terminal having binocular cameras and photographing method therefor |
| CN106851079A (en) * | 2017-04-10 | 2017-06-13 | 深圳市世纪佳华电子科技有限公司 | A kind of wide-angle imaging system |
| CN107483821A (en) * | 2017-08-25 | 2017-12-15 | 维沃移动通信有限公司 | Image processing method and mobile terminal |
| CN107483821B (en) * | 2017-08-25 | 2020-08-14 | 维沃移动通信有限公司 | Image processing method and mobile terminal |
| CN108205801A (en) * | 2017-12-27 | 2018-06-26 | 中兴通讯股份有限公司 | A kind of method and terminal for supporting image mosaic |
| EP3687154A1 (en) * | 2019-01-25 | 2020-07-29 | Beijing Xiaomi Mobile Software Co., Ltd. | Camera assembly and terminal |
| US10848671B2 (en) * | 2019-01-25 | 2020-11-24 | Beijing Xiaomi Mobile Software Co., Ltd. | Camera assembly and terminal |
| CN111491076A (en) * | 2019-01-25 | 2020-08-04 | 北京小米移动软件有限公司 | Camera assembly and terminal |
| CN111491076B (en) * | 2019-01-25 | 2021-11-16 | 北京小米移动软件有限公司 | Camera assembly and terminal |
| CN111491094B (en) * | 2019-01-28 | 2021-08-31 | 北京小米移动软件有限公司 | Camera module and terminal |
| CN111491094A (en) * | 2019-01-28 | 2020-08-04 | 北京小米移动软件有限公司 | Camera module and terminal |
| CN110493525B (en) * | 2019-09-04 | 2021-01-22 | 展讯通信（上海）有限公司 | Zoom image determination method and device, storage medium and terminal |
| CN110493525A (en) * | 2019-09-04 | 2019-11-22 | 展讯通信（上海）有限公司 | Zoom image determines method and device, storage medium, terminal |
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Granted publication date: 20120321 |