CN203554615U - Testing device for viewing angle of camera - Google Patents

Testing device for viewing angle of camera Download PDF

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Publication number
CN203554615U
CN203554615U CN201320624318.8U CN201320624318U CN203554615U CN 203554615 U CN203554615 U CN 203554615U CN 201320624318 U CN201320624318 U CN 201320624318U CN 203554615 U CN203554615 U CN 203554615U
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CN
China
Prior art keywords
camera
test
testing
translation stage
angle
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CN201320624318.8U
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Chinese (zh)
Inventor
杨伟平
黄建民
吴英建
顾韦中
夏晓伟
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中国航空工业集团公司上海航空测控技术研究所
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Priority to CN201320624318.8U priority Critical patent/CN203554615U/en
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Publication of CN203554615U publication Critical patent/CN203554615U/en

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Abstract

The utility model discloses a testing device for the viewing angle of a camera. The testing device comprises a viewing angle testing panel, a camera testing support, an image acquisition card and an illuminating lamp box, the viewing angle testing panel comprises two scale marks of a horizontal scale and a vertical scale, the camera testing support comprises a front-back moving translation platform, an up-down adjusting mechanism, a left-right adjusting mechanism and a pitching angle adjusting mechanism, the image acquisition card acquires images outputted by the camera and transmits the images to computer software to be analyzed and calculated so that the horizontal and vertical viewing angles can be obtained, and the illumination lamp box provides sufficient illumination for the viewing angle testing panel. The testing device can measure the horizontal viewing angle and the vertical viewing angle of the camera without information of internal parameters of the camera, and is in accordance with the practical usage requirement.

Description

A kind of camera visible angle testing apparatus

Technical field

The utility model relates to camera visible angle tester for testing, is specifically related to a kind of camera visible angle testing apparatus.

Background technology

Because the size of camera angular field of view directly affects the size of camera head monitor overlay area, it is a key index that affects serviceability.Camera visual angle is mainly determined by camera internal reference.Be mainly camera focal length and sensor area; It determines that method mainly converts and draws according to camera internal reference, converts by triangle known: 2arcten (h/OA), and wherein h is camera focal length, OA is inductive pick-up height.By the visual vertical and horizontal zone of camera, through converting, draw vertical angle of view and the horizontal view angle of camera, thereby draw camera visual angle.Therefore, need a set of camera visual angle testboard to measure the requirement of camera visual angle to meet in unknown camera internal reference situation.

Summary of the invention

The purpose of this utility model is to provide a kind of camera visual angle testboard, can the in the situation that of the unknown of camera internal reference, measure camera horizontal view angle and vertical angle of view.

The purpose of this utility model realizes by following technical proposals:

A kind of camera visible angle testing apparatus, comprise test base plate 5, image pick-up card 2 and the computer 1 calculating for visual angle, visual angle test panel 4 and Camera Test support are installed on described test base plate, described Camera Test support comprises the X-direction translation stage 13 that can move forward and backward cam lens, Y direction translation stage 12 and the Z-direction translation stage 10 of the upper and lower and position, left and right of adjustable cam lens, can swing up and down the wallowing motion platform 8 that certain angle regulates the angle of pitch of cam lens, for camera sectional fixture is installed, to make cam lens direction be 35 ° of horizontal forward wedges 9, camera sectional fixture 7 coordinates by double-screw bolt and nut, tested camera 3 is installed.

Further, described Camera Test support also comprises Z-direction translation stage 10 is arranged on to the Z-direction translation stage installation bracket 11 on Y-direction translation stage 12, and described Z-direction translation stage installation bracket 11 adopts 90 ° of angle brackets.

Further, two coordinate lines of horizontal and vertical that described visual angle test panel comprises tape label point, on described horizontal coordinate line, respectively there are 2 gauge points left and right, and gauge point is respectively 150mm, 200mm to the distance of level and vertical coordinate line central point; On vertical coordinate line, respectively there are 2 gauge points left and right, and gauge point is respectively 150mm, 200mm to the distance of level and vertical coordinate line central point.

Further, test base plate 5 is also provided with lighting lamphouse 15, described visual angle test panel 4, Camera Test prop up and are erected in lighting lamphouse, and there are D65, TL84, tri-kinds of standard sourcess of F in lighting lamphouse intraoral illumination lamp source, and the background color of lamphouse light source is extinction type grey.

Further, be also provided with can be install during camera can be by the panoramic table 14 of test bracket Rotate 180 ° for test base plate 5.

Effect of the present utility model: obtain camera visual angle by the mode of direct measurement, than the more realistic instructions for use in the visual angle obtaining by conversion; Visual angle test panel adopts the graduated scale of process measurement verification as measuring measurer, and precision is more reliable; For guaranteeing the picture signal of camera outputting high quality, designed lighting lamphouse visual angle test panel has been thrown light on fully; Design Camera Test support, adopted high precision translational platform and wallowing motion platform to guarantee camera position/angle adjustment precision and mobile accuracy in test process.

Accompanying drawing explanation

The schematic diagram of Fig. 1 the utility model camera visible angle testing apparatus;

The visual angle test panel structure chart of Fig. 2 the utility model camera visible angle testing apparatus;

Fig. 3 the utility model camera visible angle testing apparatus Camera Test rack assumption diagram.

Fig. 4 the utility model camera visible angle testing apparatus lighting lamphouse

Number in the figure explanation

1-computer, 2-image pick-up card, 3-camera, 4-visual angle test panel

5-test base plate, 6-display, 7-camera sectional fixture, 8-wallowing motion platform

9-35 ° of wedge 10-Z-direction translation stage 11-Z-direction translation stage installation brackets

12-Y direction translation stage, 13-X-direction translation stage, 14-panoramic table, 15-lighting lamphouse

D: camera when position 1, cam lens and visual angle test panel horizontal range

D: camera moves horizontally distance

H 1: camera when position 1, viewing area height

H 2: camera when position 2, viewing area height

W 1: camera when position 1, viewing area width

Embodiment

Below in conjunction with drawings and Examples, the utility model is described further.

Embodiment

As shown in Figure 1, test base plate 5 is for installing Camera Test support, regulate the relative position of camera 3 and visual angle test panel 4, alignd with visual angle test panel 4 initial points in camera 3 centers, on the test panel of visual angle, be marked with transverse and longitudinal coordinate scale gauge point, camera is taken visual angle test panel 4, by image pick-up card 2 acquisition camera 3 output images, at display 6, show, mobile X-direction translation stage 13, make camera in image left and right edges position capture to visual angle test panel 4 horizontal coordinate graduation marks on two gauge points of 150mm, record the now shift position scale d of X-direction translation stage 13 1, mobile X-direction translation stage 13, to camera in image left and right edges position capture to two gauge points of 200mm on visual angle test panel 4 horizontal coordinate graduation marks, records the now shift position scale d of X-direction translation stage 13 backward 2, mobile X-direction translation stage 13, makes camera in the upper and lower marginal position of image, capture two gauge points of 150mm on visual angle test panel 4 vertical coordinate graduation marks, records the now shift position scale d of X-direction translation stage 13 3, mobile X-direction translation stage 13 captures two gauge points of 200mm on visual angle test panel 4 horizontal coordinate graduation marks to camera in the upper and lower marginal position of image backward, records the now shift position scale d of X-direction translation stage 13 4, by the analysis software being arranged in computer 1, calculate camera horizontal and vertical visual angle.

As shown in Figure 2, visual angle test panel 4 is keys that visual angle is measured, and mainly comprises the scale precision of visual angle test panel 4, therefore, need to carry out measurement and calibration to visual angle test panel 4.

As shown in Figure 3, Camera Test support adopts modularized design, has guaranteed reliability and certainty of measurement.Test base plate 5 is that installation basis and the camera of Camera Test support adjusted datum level, adopts 20mm thickness aluminium, and processing guarantees higher flatness; X-direction translation stage 13 is to move forward and backward mechanism in Camera Test process, by hand rotation handle, is realized and being moved forward and backward, and realizing its effective displacement is 100mm; Mobile accuracy is greater than 0.1mm; Y direction translation stage 12 is left and right position adjusting mechanisms in Camera Test process, by hand rotation handle, is realized and being moved left and right, and realizing its effective displacement is 100mm; Mobile accuracy is greater than 0.1mm; Z-direction translation stage 10 is upper-lower position adjusting mechanisms in Camera Test process, and its effective displacement is 100mm; Mobile accuracy is greater than 0.1mm.Z-direction translation stage installation bracket 11 adopts 90 ° of angle brackets, and Z-direction translation stage is arranged on Y-direction translation stage; 35 ° of wedges 9 are for camera sectional fixture is installed, and it is horizontal forward making cam lens direction; Wallowing motion platform 8 is designed for and regulates lower angle on camera, to revise cam lens direction, guarantees that cam lens direction is horizontal forward.Camera sectional fixture 7, by being that a double-screw bolt and nut coordinate, is installed tested camera.Panoramic table 14 can be by test bracket Rotate 180 ° when camera is installed, and installs after camera Rotate 180 ° again and goes back to test position.

For guaranteeing camera 3, take the picture quality of visual angle test panel 4 high scales and need to throw light on and guarantee the good picture signal of camera 3 output qualities visual angle test panel 4, avoid extraneous light to irradiate test panel 4 installation regions, casing visual angle simultaneously, as requested, design lighting lamphouse 15, as shown in Figure 4:

1, lamp box intraoral illumination lamp source can provide D65, TL84, tri-kinds of standard sourcess of F;

2, the background color of lamphouse light source is extinction type grey, avoids extraneous light to irradiate test panel 4 installation regions, casing visual angle during use;

3, illumination is from adjustable, and the uniformity is higher than more than 80%;

4, Camera Test support and test panel are located in lighting lamphouse.

Test operation comprises following step, is example take vertical angle of view, as shown in Figure 1:

1.X direction of principal axis translation stage moves tested camera, makes camera in the upper and lower marginal position of image, capture two gauge points of 150mm on visual angle test panel 4 vertical coordinate graduation marks, obtains vertical field of view height H 2the now shift position scale d of X-direction translation stage 13 3;

2. mobile X-direction translation stage 13 captures two gauge points of 200mm on visual angle test panel 4 horizontal coordinate graduation marks to camera in the upper and lower marginal position of image backward, takes and obtains vertical field of view height H 1the now shift position scale d of X-direction translation stage 13 4;

3. by conversion, draw: the distance B of the tested camera in position 1 and visual angle test panel,

That is: D=(d 4-d 3) × H 1/ (H 1-H 2);

4. vertical angle of view Vertical FOV=2 × tan -1(H 1/ (2 × D))=2 × tan -1((H 1-H 2)/(2 × (d 4-d 3)));

5. in like manner can obtain horizontal view angle Horizontal FOV=2 × tan -1((W 1-W 2)/(2 × (d 4-d 3))).

Claims (5)

1. a camera visible angle testing apparatus, comprise test base plate (5), image pick-up card (2) and the computer (1) calculating for visual angle, visual angle test panel (4) and Camera Test support are installed on described test base plate, it is characterized in that, described Camera Test support comprises the X-direction translation stage (13) that can move forward and backward cam lens, Y direction translation stage (12) and the Z-direction translation stage (10) of the upper and lower and position, left and right of adjustable cam lens, can swing up and down the wallowing motion platform (8) that certain angle regulates the angle of pitch of cam lens, for camera sectional fixture is installed, to make cam lens direction be horizontal forward 35 ° of wedges (9), camera sectional fixture (7) coordinates by double-screw bolt and nut, tested camera (3) is installed.
2. a kind of camera visible angle testing apparatus according to claim 1, it is characterized in that described Camera Test support also comprises is arranged on the Z-direction translation stage installation bracket (11) on Y-direction translation stage (12) by Z-direction translation stage (10), and described Z-direction translation stage installation bracket (11) adopts 90 ° of angle brackets.
3. a kind of camera visible angle testing apparatus according to claim 1, it is characterized in that, two coordinate lines of horizontal and vertical that described visual angle test panel comprises tape label point, on described horizontal coordinate line, respectively there are 2 gauge points left and right, and gauge point is respectively 150mm, 200mm to the distance of level and vertical coordinate line central point; On vertical coordinate line, respectively there are 2 gauge points left and right, and gauge point is respectively 150mm, 200mm to the distance of level and vertical coordinate line central point.
4. a kind of camera visible angle testing apparatus according to claim 1, it is characterized in that described test base plate (5) is also provided with lighting lamphouse (15), described visual angle test panel (4), Camera Test prop up and are erected in lighting lamphouse, there are D65, TL84, tri-kinds of standard sourcess of F in lighting lamphouse intraoral illumination lamp source, and the background color of lamphouse light source is extinction type grey.
5. a kind of camera visible angle testing apparatus according to claim 1, it is characterized in that described test base plate (5) be also provided with can be when camera be installed can be by the panoramic table (14) of test bracket Rotate 180 °.
CN201320624318.8U 2013-10-10 2013-10-10 Testing device for viewing angle of camera CN203554615U (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486287A (en) * 2015-12-25 2016-04-13 东风商用车有限公司 Multifunctional distance measuring sensor adjusting device and use method thereof
CN107202557A (en) * 2017-04-21 2017-09-26 歌尔股份有限公司 To the system and method for mark measurement apparatus, calibration camera lens and graph card relative position
CN107465872A (en) * 2017-08-18 2017-12-12 广州市康超信息科技有限公司 A kind of method to workpiece photograph
CN107995486A (en) * 2017-12-11 2018-05-04 珠海格力电器股份有限公司 A kind of camera bearing calibration and device
CN106657993B (en) * 2017-02-28 2018-07-06 深圳职业技术学院 A kind of low-light (level) wide-angle light box
CN108827600A (en) * 2018-05-31 2018-11-16 上海与德通讯技术有限公司 measuring device
WO2019109249A1 (en) * 2017-12-05 2019-06-13 深圳市宝盛自动化设备有限公司 Aoi-based lcd panel inspection device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486287A (en) * 2015-12-25 2016-04-13 东风商用车有限公司 Multifunctional distance measuring sensor adjusting device and use method thereof
CN106657993B (en) * 2017-02-28 2018-07-06 深圳职业技术学院 A kind of low-light (level) wide-angle light box
CN107202557A (en) * 2017-04-21 2017-09-26 歌尔股份有限公司 To the system and method for mark measurement apparatus, calibration camera lens and graph card relative position
CN107202557B (en) * 2017-04-21 2019-08-20 歌尔股份有限公司 To the system and method marked measuring device, calibrate camera lens and graph card relative position
CN107465872A (en) * 2017-08-18 2017-12-12 广州市康超信息科技有限公司 A kind of method to workpiece photograph
WO2019109249A1 (en) * 2017-12-05 2019-06-13 深圳市宝盛自动化设备有限公司 Aoi-based lcd panel inspection device
CN107995486A (en) * 2017-12-11 2018-05-04 珠海格力电器股份有限公司 A kind of camera bearing calibration and device
CN108827600A (en) * 2018-05-31 2018-11-16 上海与德通讯技术有限公司 measuring device

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