CN104079927B - A kind of angle of visual field measurement mechanism - Google Patents
A kind of angle of visual field measurement mechanism Download PDFInfo
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- CN104079927B CN104079927B CN201410320588.9A CN201410320588A CN104079927B CN 104079927 B CN104079927 B CN 104079927B CN 201410320588 A CN201410320588 A CN 201410320588A CN 104079927 B CN104079927 B CN 104079927B
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Abstract
The embodiment of the invention discloses a kind of angle of visual field measurement mechanism, comprising: shelf, dial chart Graphic Panel, and by support that shelf is separated with dial chart Graphic Panel; Shelf is parallel with dial chart Graphic Panel; Shelf is used for shelving terminal to be tested, and shelf has hole, and the size in hole is not less than the size of the camera of terminal to be tested; Dial chart Graphic Panel is at the side relative with shelf display angle of visual field dial chart, angle of visual field dial chart comprises the graduated concentric circles of multiple sign, scale is for representing corresponding concentrically ringed angle of visual field size, concentrically ringed angle of visual field size is according to the distance between shelf and described dial chart Graphic Panel, and concentrically ringed radius is determined; After the camera controlling terminal to be tested is taken pictures to dial chart Graphic Panel through the hole on shelf, the angle of visual field of the camera of terminal to be tested determined by the photograph captured by camera.The technical scheme of the embodiment of the present invention can the angle of visual field of measuring terminals simply directly perceived.
Description
Technical field
The present invention relates to digital electric field, be specifically related to a kind of angle of visual field measurement mechanism.
Background technology
At present, optical camera has been widely used in the mobile terminals such as mobile phone, camera, video camera.The size of the angle of visual field of optical camera determines the field range of place mobile terminal, and the angle of visual field is larger, and the visual field is larger.Generally, target object exceedes this angle and would not be received in camera lens.
For mobile terminals such as mobile phone, camera, video cameras, because its photosurface is rectangle, therefore normal with the imaging thing diameter of the rectangular photosensitive face diagonal calculating angle of visual field, be called the diagonal angle of visual field, angle AOB as shown in Figure 1; Also have with the Size calculation angle of visual field of the horizontal direction of rectangle, be called horizontal field of view angle, angle COD as shown in Figure 2; Also have with the Size calculation angle of visual field of the vertical direction of rectangle, be called vertical field of view angle, angle EOF as shown in Figure 3.
At present in businessman or sales field to the test of the angle of visual field of mobile terminal, evaluate, compare and publicize time, generally by taking pictures, measure length and width and the diagonal data of corresponding scenery in the photo obtained, calculate the angle of visual field of camera lens again with Hook's law and antitrigonometric function, such method of testing is more directly perceived not than more complicated.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of angle of visual field measurement mechanism, with the angle of visual field solving camera in prior art measuring terminals than more complicated and not intuitively problem.
The angle of visual field measurement mechanism that the embodiment of the present invention provides, comprising:
Shelf, dial chart Graphic Panel, and by support that described shelf is separated with described dial chart Graphic Panel;
Described shelf is parallel with described dial chart Graphic Panel;
Described shelf is used for shelving terminal to be tested, and described shelf has hole, and the size in described hole is not less than the size of the camera of terminal to be tested;
Described dial chart Graphic Panel shows angle of visual field dial chart in the side relative with described shelf, described angle of visual field dial chart comprises the graduated concentric circles of multiple sign, described scale is for representing corresponding concentrically ringed angle of visual field size, described concentrically ringed angle of visual field size is according to the distance between described shelf and described dial chart Graphic Panel, and described concentrically ringed radius is determined;
After the camera controlling described terminal to be tested is taken pictures to described dial chart Graphic Panel through the described hole on described shelf, the angle of visual field of the camera of described terminal to be tested determined by the photograph captured by described camera.
Further, the line that the concentrically ringed center of circle shown by described dial chart Graphic Panel and the hole on described shelf are formed is vertical with described dial chart Graphic Panel with described shelf.
Further, the photograph captured by described camera determines that the angle of visual field of the camera of described terminal to be tested specifically comprises:
In photograph captured by described camera, the concentrically ringed corresponding scale of outermost, determines the angle of visual field of the camera of described terminal to be tested.
Further, described device also comprises data reception module and processor;
Described data reception module is used for from the photograph captured by described terminal reception to be tested, and this photograph is sent to processor;
Described processor is connected with described data reception module, for receiving the photograph that described data reception module is sent, by determining the angle of visual field of the camera of described terminal to be tested to described photograph analysis.
Further, described data reception module is near radio transport module.
Further, described angle of visual field dial chart is coating or the poster of side relative with described shelf on described dial chart Graphic Panel.
Further, described dial chart Graphic Panel is electronic display.
Further, described support is variable height support, described electronic display is connected with described processor respectively with described support, described processor is also for controlling the height of described support to adjust the distance between described shelf and described dial chart Graphic Panel, determine concentrically ringed number and each concentrically ringed radius according to described distance, determined concentrically ringed number and each concentrically ringed radius are sent to described electronic display;
Described electronic display is drawn according to received concentrically ringed number and each concentrically ringed radius and is shown described angle of visual field dial chart.
The technical scheme of the embodiment of the present invention comprises shelf by open one, dial chart Graphic Panel, and the angle of visual field measurement mechanism of the support that described shelf is separated with described dial chart Graphic Panel, realize after the camera controlling terminal to be tested is taken pictures to described dial chart Graphic Panel through the hole on shelf, the angle of visual field of the camera of described terminal to be tested determined by the photograph captured by described camera.Can the angle of visual field of measuring terminals simply directly perceived.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is the diagonal angle of visual field schematic diagram shown in background technology;
Fig. 2 is the horizontal field of view angle schematic diagram shown in background technology;
Fig. 3 is the vertical field of view angle schematic diagram shown in background technology;
Fig. 4 is the structured flowchart of the angle of visual field measurement mechanism described in the embodiment of the present invention one;
Fig. 5 is the schematic diagram of the angle of visual field dial chart described in the embodiment of the present invention one;
Fig. 6 is concentric circles angle schematic diagram in the dial chart Graphic Panel described in the embodiment of the present invention one;
Fig. 7 is that the angle of visual field described in the embodiment of the present invention one calculates schematic diagram;
Fig. 8 is the schematic diagram of the image reading angle of visual field of being taken by camera described in the embodiment of the present invention one.
Embodiment
The technical problem solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment one
Fig. 4 is the structured flowchart of the angle of visual field measurement mechanism described in the embodiment of the present invention one, and as shown in Figure 4, the angle of visual field testing apparatus described in the present embodiment comprises:
Shelf 401, dial chart Graphic Panel 402, and by support 403 that described shelf 401 is separated with described dial chart Graphic Panel 402;
Described shelf 401 is parallel with described dial chart Graphic Panel 402;
Described shelf 401, for shelving terminal to be tested, described shelf 401 has hole 404, and the size in described hole 404 is not less than the size of the camera of terminal to be tested;
Described dial chart Graphic Panel 402 shows angle of visual field dial chart in the side relative with described shelf 401, described angle of visual field dial chart comprises the graduated concentric circles of multiple sign, described scale is for representing corresponding concentrically ringed angle of visual field size, described concentrically ringed angle of visual field size is according to the distance between described shelf 401 and described dial chart Graphic Panel 402, and described concentrically ringed radius is determined;
After the camera controlling described terminal to be tested is taken pictures to described dial chart Graphic Panel 402 through the described hole 404 on described shelf 401, the angle of visual field of the camera of described terminal to be tested determined by the photograph captured by described camera.
Wherein, as shown in Figure 5, in dial chart Graphic Panel, concentric circles angle schematic diagram as shown in Figure 6 for the schematic diagram of the angle of visual field dial chart on the dial chart Graphic Panel that described dial chart Graphic Panel 402 shows in the side relative with described shelf 401.It should be noted that, in angle of visual field dial chart, concentrically ringed number, and each concentrically ringed radius can set arbitrarily, as long as the scale of the expression angle of visual field size corresponding to each concentric circles, mates with corresponding radius.
Particularly, judge whether concentrically ringed scale mates with this concentrically ringed radius, the tangent value of the angle that demand fulfillment number of division (or signal numerical value of number of division) is corresponding equals this concentric circles radius divided by the distance between described shelf 401 and described dial chart Graphic Panel 402, Fig. 7 is that the angle of visual field described in the present embodiment calculates schematic diagram, as shown in Figure 7, O is the position of camera, and C is the concentrically ringed center of circle, from right-angled triangle tangent formula
then
the concentrically ringed angle of visual field number of degrees are 2 θ, and this concentrically ringed scale is determined according to this concentrically ringed number of degrees 2 θ.Concrete determination mode can be various ways, below enumerates the mode that two kinds are determined concentric circles scale.
Mode one, to each concentric circles, directly identify each concentrically ringed angle of visual field number of degrees at correspondence position, namely according to the angle of visual field number of degrees that above-mentioned computing formula obtains according to concentric circles radius, i.e. 2 θ;
Mode two, to each concentric circles, directly identify the half of each concentrically ringed angle of visual field number of degrees at correspondence position, namely obtain according to concentric circles radius according to above-mentioned computing formula
i.e. θ.
Such as, if the dial chart Graphic Panel captured by camera comprises the part as shown in rectangle in Fig. 8, as shown in Figure 8, each concentrically ringed scale is followed successively by 10 degree from inside to outside, 20 degree, 40 degree, 45 degree, 55 degree, and 75 degree.If this scale is pass-through mode one mark, then the diagonal angle of visual field of this camera is 75 degree, and horizontal field of view angle is 55 degree, and vertical field of view angle is 45 degree; If this scale is pass-through mode two mark, then the diagonal angle of visual field of this camera is 150 degree (75*2), and horizontal field of view angle is 110 degree (55*2), and vertical field of view angle is 90 degree (45*2).
Certainly, concentric circles included in exemplary plot illustrated in fig. 8, just included to the circumscribed circle of the figure captured by camera and the tangent circle of horizontal sides and and the tangent circle of vertical edges, so it is very directly perceived to read corresponding scale, if there is no just corresponding concentric circles, then can carry out estimating according to end points and inside and outside two concentrically ringed distances.Such as end points is in the annulus center of two concentric circles compositions, and two concentrically ringed angle of visual field scales are respectively 20 degree and 30 degree, then can estimate that the angle of visual field that this end points is corresponding is 25 degree.
In general, require the line that the concentrically ringed center of circle shown by described dial chart Graphic Panel and the hole on described shelf are formed, vertical with described dial chart Graphic Panel with described shelf.Therefore, the figure in the dial chart Graphic Panel captured by camera should be Central Symmetry.But, if camera offsets to some extent, or shown dial chart shows deviation on dial chart Graphic Panel, figure then captured by camera there will be left-right asymmetry or upper and lower asymmetric situation, if require not too strict to certainty of measurement, then can concentrically ringed angle corresponding for cornerwise two end points be averaging as the diagonal angle of visual field; Can concentrically ringed angle corresponding for horizontal two end points be averaging as horizontal field of view angle; Concentrically ringed angle corresponding for two of a vertical line end points can be averaging as vertical field of view angle.If scale is pass-through mode one mark, then direct the angle that concentric circles corresponding for two ends marks to be added; If scale is pass-through mode two mark, then need first the angle that the concentric circles of two end correspondences marks to be added again divided by 2.
The technical scheme of the present embodiment comprises shelf by open one, dial chart Graphic Panel, and the angle of visual field measurement mechanism of the support that described shelf is separated with described dial chart Graphic Panel, realize after the camera controlling terminal to be tested is taken pictures to described dial chart Graphic Panel through the hole on shelf, the angle of visual field of the camera of described terminal to be tested determined by the photograph captured by described camera.Can the angle of visual field of measuring terminals simply directly perceived.
Embodiment two
For embodiment one, after the camera controlling described terminal to be tested is taken pictures to described dial chart Graphic Panel through the described hole on described shelf, photograph captured by described camera determines that the mode of the angle of visual field of the camera of described terminal to be tested comprises multiple, includes but not limited to be read by human eye Direct Recognition.Namely the present embodiment is on the basis of embodiment one, automatically determines the angle of visual field of the camera of described terminal to be tested by increasing data reception module and processor on device.
Particularly, the functions of modules increased is respectively:
Described data reception module is used for from the photograph captured by described terminal reception to be tested, and this photograph is sent to processor;
Described processor is connected with described data reception module, for receiving the photograph that described data reception module is sent, by determining the angle of visual field of the camera of described terminal to be tested to described photograph analysis.
Particularly, the mode of the angle of visual field of processor acquisition camera also follows the computational methods described in embodiment one.If the concentric circles density of angle of visual field dial chart is enough large, or the angle of visual field can carry out accommodation, each end points all can find the concentric circles at place, then first-selection carries out image recognition to photograph, relative to the position of angle of visual field dial chart, identify cornerwise end points in photograph, horizontal line and concentrically ringed point of contact, and vertical line and concentrically ringed point of contact, obtain the concentric circles that these points are corresponding respectively, determine the angle of visual field corresponding to these concentric circless, respectively as the diagonal angle of visual field of this camera, horizontal field of view angle and vertical field of view angle.If angle of visual field density is large not, there is end points not on any concentric circles, then carry out calculating or estimating according to preset algorithm.Such as end points is in the annulus center of two concentric circles compositions, and two concentrically ringed angle of visual field scales are respectively 20 degree and 30 degree, then can estimate that the angle of visual field that this end points is corresponding is 25 degree.
Preferably, described data reception module is near radio transport module.Such as Wireless Fidelity WIFI, bluetooth etc.
The present embodiment adds data reception module and processor on the basis of embodiment one, can realize automatically measuring the angle of visual field, makes the measurement of the angle of visual field easier.
Embodiment three
For embodiment one or embodiment two, described angle of visual field dial chart can be the content etc. of the coating of side relative with described shelf on described dial chart Graphic Panel, poster or electronic display screen displays.If described angle of visual field dial chart is coating, poster etc., then described support for can be fixed support, to make the distance of camera and dial chart Graphic Panel fix, must make the scale on coating, poster and practical field of view angle automatching.If support height changes, then coating, poster etc. also need correspondingly to change.If described angle of visual field dial chart is electronic display, then described support can change flexibly, and concentrically ringed number and each concentrically ringed radius can carry out accommodation according to the shooting results of camera in angle of visual field dial chart, directly to read the angle of visual field from angle of visual field dial chart, to improve the accuracy that the angle of visual field is measured.
In angle of visual field measurement mechanism shown in the present embodiment, described support is variable height support, and angle of visual field dial chart passes through electronic display screen displays.In the present embodiment, wherein, described electronic display is connected with described processor respectively with described support, described processor is also for controlling the height of described support to adjust the distance between described shelf and described dial chart Graphic Panel, determine concentrically ringed number and each concentrically ringed radius according to described distance, determined concentrically ringed number and each concentrically ringed radius are sent to described electronic display.Described electronic display is drawn according to received concentrically ringed number and each concentrically ringed radius and is shown described angle of visual field dial chart.
On the basis of embodiment two, in the angle of visual field measurement mechanism shown in the present embodiment, described support is variable height support, and angle of visual field dial chart is by electronic display screen displays, adds the flexibility ratio of device, improves the accuracy that the angle of visual field is measured.
All or part of content in the technical scheme that above embodiment provides can be realized by software programming, and its software program is stored in the storage medium that can read, storage medium such as: the hard disk in computer, CD or floppy disk.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (7)
1. an angle of visual field measurement mechanism, is characterized in that, comprising:
Shelf, dial chart Graphic Panel, and by support that described shelf is separated with described dial chart Graphic Panel;
Described shelf is parallel with described dial chart Graphic Panel;
Described shelf is used for shelving terminal to be tested, and described shelf has hole, and the size in described hole is not less than the size of the camera of terminal to be tested;
Described dial chart Graphic Panel shows angle of visual field dial chart in the side relative with described shelf, described angle of visual field dial chart comprises the graduated concentric circles of multiple sign, described scale is for representing corresponding concentrically ringed angle of visual field size, described concentrically ringed angle of visual field size is according to the distance between described shelf and described dial chart Graphic Panel, and described concentrically ringed radius is determined;
The line that the concentrically ringed center of circle shown by described dial chart Graphic Panel and the hole on described shelf are formed is vertical with described dial chart Graphic Panel with described shelf;
After the camera controlling described terminal to be tested is taken pictures to described dial chart Graphic Panel through the described hole on described shelf, the angle of visual field of the camera of described terminal to be tested determined by the photograph captured by described camera.
2. angle of visual field measurement mechanism according to claim 1, is characterized in that, the photograph captured by described camera determines that the angle of visual field of the camera of described terminal to be tested specifically comprises:
In photograph captured by described camera, the concentrically ringed corresponding scale of outermost, determines the angle of visual field of the camera of described terminal to be tested.
3. angle of visual field measurement mechanism according to claim 1, is characterized in that, described device also comprises data reception module and processor;
Described data reception module is used for from the photograph captured by described terminal reception to be tested, and this photograph is sent to processor;
Described processor is connected with described data reception module, for receiving the photograph that described data reception module is sent, by determining the angle of visual field of the camera of described terminal to be tested to described photograph analysis.
4. angle of visual field measurement mechanism according to claim 3, is characterized in that, described data reception module is near radio transport module.
5., according to the arbitrary described angle of visual field measurement mechanism of claim 1-4, it is characterized in that, described angle of visual field dial chart is coating or the poster of side relative with described shelf on described dial chart Graphic Panel.
6., according to the arbitrary described angle of visual field measurement mechanism of claim 3-4, it is characterized in that, described dial chart Graphic Panel is electronic display.
7. angle of visual field measurement mechanism according to claim 6, it is characterized in that, described support is variable height support, described electronic display is connected with described processor respectively with described support, described processor is also for controlling the height of described support to adjust the distance between described shelf and described dial chart Graphic Panel, determine concentrically ringed number and each concentrically ringed radius according to described distance, determined concentrically ringed number and each concentrically ringed radius are sent to described electronic display;
Described electronic display is drawn according to received concentrically ringed number and each concentrically ringed radius and is shown described angle of visual field dial chart.
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| CN107121267B (en) * | 2017-06-16 | 2023-07-14 | 歌尔光学科技有限公司 | Testing device and testing method for lens field angle |
| WO2019061044A1 (en) * | 2017-09-27 | 2019-04-04 | 深圳传音通讯有限公司 | Field of view measurement device, and field of view measurement method |
| CN107702895A (en) * | 2017-09-28 | 2018-02-16 | 信利光电股份有限公司 | A kind of angle of view measuring method |
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| CN109862345B (en) | 2017-11-30 | 2022-09-30 | 京东方科技集团股份有限公司 | Method and system for testing field angle |
| CN108093247B (en) * | 2017-12-15 | 2020-11-27 | 信利光电股份有限公司 | Method and system for testing field angle of lens |
| CN108918098B (en) * | 2018-08-24 | 2020-03-31 | 天津市医疗器械质量监督检验中心 | Method for testing entrance pupil field angle of medical endoscope in rectangular field of view |
| CN109104606B (en) * | 2018-10-25 | 2022-03-15 | 公安部第三研究所 | System and method for rapidly measuring inclination angle and field angle of camera |
| CN109218720A (en) * | 2018-11-15 | 2019-01-15 | Oppo（重庆）智能科技有限公司 | A kind of detection jig for structure optical mode group |
| CN110987375A (en) * | 2019-12-10 | 2020-04-10 | 杭州涂鸦信息技术有限公司 | Method for measuring angle of field of view of camera |
| CN113727010A (en) * | 2020-05-26 | 2021-11-30 | 希姆通信息技术（上海）有限公司 | Multi-camera angle of view correction method, system, medium, and electronic device |
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