CN103118270B - Camera testing device and camera testing method - Google Patents
Camera testing device and camera testing method Download PDFInfo
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- CN103118270B CN103118270B CN201310056952.0A CN201310056952A CN103118270B CN 103118270 B CN103118270 B CN 103118270B CN 201310056952 A CN201310056952 A CN 201310056952A CN 103118270 B CN103118270 B CN 103118270B
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 230000000694 effects Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 8
- 238000004088 simulation Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 12
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000004069 differentiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention discloses a camera testing device which comprises a video set providing videos, a camera and a fixing device for the camera. The camera testing device further comprises a lens set which is disposed between the video set and the fixing device and is used for simulating different shooting distances. Different distances can be simulated to test focusing imaging effect of the camera by adjusting the lens set with no need of moving the camera or the video set. Therefore, differences between factors such as light and angle caused by moving of the camera or the video set are avoided, repeatability and standard of tested images are increased, and accuracy in judging imaging effect of the camera is increased. These effects are achieved just by simply adjusting the lens set with no need of continuously correcting the factors such as light and angle during shooting, time and labor are saved, accuracy is guaranteed and efficiency is improved greatly.
Description
Technical field
The present invention relates to the field tests of photographic equipment and parts thereof, particularly relate to a kind of Camera Test method and device thereof.
Background technology
Optical camera is mainly used in the electronic equipment such as mobile phone, digital camera, for absorbing the light that external object sends, carries out optical imagery.In order to ensure the imaging effect of camera, need to test the camera produced, and in prior art when testing, or use various instrument and equipment to carry out shoot on location to various scene, or the specific image on a device for image is taken, then imaging effect is analyzed to the result drawn, the former shoot on location is easily subject to the impact of on-the-spot surrounding enviroment change, the scenery of scene may be there is when taking, the deviation of the factor such as angle and light, and no matter the latter is dollying head or device for image in shooting process, shooting angle and these factors of light can be caused equally to occur certain difference, repeatability and the standard of the contrast print drawn so are just had a greatly reduced quality, accurately can not judge the quality of camera imaging effect, and then the quality of mobile phone or digital camera can be had influence on, even if constantly revise to strengthen the last accuracy judged to the factor such as angle and light in shooting process, but such way work consuming quite consuming time, reduce efficiency, and due to be manual operation repeatability and standard type be still difficult to guarantee.
Summary of the invention
The invention provides a kind of camera testing device, solve test result poor repeatability and non-type shortcoming in prior art.
The invention provides following technical scheme for achieving the above object:
A kind of camera testing device, comprise device for image, camera and fixture thereof that testing image is provided, also comprise and being arranged between described device for image from described fixture for simulating the set of lenses of different camera distance, described testing image forms the real image that a handstand is reduced after described set of lenses, and described camera observes by described set of lenses the real image that described handstand reduces can see a virtual image of amplifying; Described set of lenses has one or two or more sets of, often organize set of lenses to comprise optical axis and overlap and the combination of the two or more convex lens of adjustable relative position, two or more concavees lens, convex lens and concavees lens, only described set of lenses need be regulated, without the need to mobile described device for image or described camera itself in the process utilizing described camera collection testing image.
The present invention can also adopt following optimal way:
Described set of lenses is zoom lens.
Described camera testing device also comprises the driver element driving described set of lenses to complete simulation different distance.
Described camera testing device also comprises a darkroom, and described set of lenses and described camera head fixing device are positioned in described darkroom.
Described device for image is any one in display screen, slide projector and entity test picture.
When described device for image is described slide projector, be also provided with the supplementary light source for improving testing image definition.
Described supplementary light source is LED light source.
A kind of Camera Test method, it is provided with the analogue means that can simulate different camera distances between image to be tested and camera, the photographic effect of described camera under different camera distance is tested by regulating described analogue means, described analogue means is adjustable lens group, described testing image forms the real image that a handstand is reduced after described set of lenses, and described camera observes by described set of lenses the real image that described handstand reduces can see a virtual image of amplifying; Described set of lenses has one or two or more sets of, often organize set of lenses to comprise optical axis and overlap and the combination of the two or more convex lens of adjustable relative position, two or more concavees lens, convex lens and concavees lens, only need regulate described set of lenses, without the need to the described image to be tested of movement or described camera itself utilizing in the process gathering image to be tested described in described camera.
Preferably, described analogue means is adjustable lens group.
Preferred further, described image to be tested and camera are as in the darkroom that light can be avoided to disturb.
Preferred again, described image to be tested is provided by device for image, is also provided with the supplementary light source for improving image definition.
The invention has the beneficial effects as follows:
Camera testing device provided by the invention, by being also provided with set of lenses between device for image and the fixture of camera, different distances can be simulated to realize the imaging effect test of focusing under different distance to camera by regulating this set of lenses, without the need to dollying head or device for image, avoid the difference of the factor such as light and angle caused thus, improve repeatability and the standard of test picture, and then improve the accuracy of camera imaging effect judgement, and only need simply to regulate set of lenses can realize such effect, not be used in shooting process and constantly the factor such as light and angle is revised, saving of work and time, substantially increase efficiency while not only having ensured accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
Fig. 3 is the imaging schematic diagram of one embodiment of the invention.
Embodiment
Contrast accompanying drawing below in conjunction with embodiment the present invention is further detailed explanation.
As shown in Figure 1, camera testing device disclosed by the invention, comprise device for image 1, camera 4 and fixture 2 thereof, described device for image 1 provides the image of test, camera 4 is placed in described fixture 2, described camera 4 can gather image from described device for image 1, the present invention is also provided with set of lenses 3 between described device for image 1 and described fixture 2, utilize described set of lenses 3 can simulate different distances, described camera 4 realizes focusing by described set of lenses 3 under different simulated ranges, then gather this image and preserve as testing image, again the raw video of this testing image and described device for image 1 is compared, judge the imaging effect of described camera 4.
The situation obtaining different distance is simulated because camera testing device of the present invention have employed described set of lenses 3, so only described set of lenses 3 need be regulated in the process utilizing described camera 4 collecting test image, without the need to mobile described device for image 1 or described camera 4 itself, doing so avoids the angle easily produced when mobile described device for image 1 or described camera 4, the error of the factors such as light, improve repeatability and the standard degree of testing image, and then improve the accuracy that described camera 4 imaging effect is judged, simultaneously simple to operate, without the need to constantly revising the factor such as light and angle in shooting process, saving of work and time, substantially increase efficiency.
As shown in Figure 3, the structure of described set of lenses 3 is the convex lens 301 and 302 that two optical axises overlap.Testing image on described device for image 1 forms the real image 3011 that a handstand is reduced after described convex lens 301, described camera 4 is a to the distance of described convex lens 302, and described camera 4 observes described real image 3011 by described convex lens 302 can see a virtual image of amplifying 3021.The focal length of described convex lens 302 is f
2, described real image 3011 is b to the distance of described convex lens 302, and the described virtual image 3021 is c to the distance of described convex lens 302, so passes through formula
obtain
when b levels off to very little time, c levels off to very little, when b levels off to f
2time, c levels off to infinity, so can by regulating the relative position of described convex lens 301 and 302, or move integrally described set of lenses 3 and change the value that its position between described camera 4 and described device for image 1 realizes adjusting b, the position of the described virtual image 3021 that described camera 4 so just can be regulated to see, the namely value of a+c, like this without the need to mobile described device for image 1 or described camera 4, just achieve the scenery far and near distance difference that described camera 4 photographed, thus complete the focusing of described camera 4 is detected, preferably, described set of lenses 3 can be a zoom lens.
Such as, described set of lenses also can be convex lens and a concavees lens composition, also can be effective; Described set of lenses is set to more than two, often organize set of lenses and comprise optical axis and to overlap and the two or more convex lens of adjustable relative position, concave and convex lenses or convex lens/with the combination of concavees lens, can be effective too.
Described set of lenses 3 can utilize manual adjustment, also can junctor electric installation 5, drives described set of lenses 3 to complete the simulation of different distance and focusing situation by described electromechanical assembly 5.In addition, for improving image quality, described set of lenses can be not only one group, such as available set of lenses more than two, often includes optical axis in group set of lenses and overlaps and the two or more convex lens of adjustable relative position.Certainly, also the entirety organizing multiple eyeglass can be used as convex lens more.
Further, as shown in Figure 2, described camera testing device can also adopt computer 6 to control, by the automatic image controlling described device for image 1 and show of described computer 6, then controlling described electromechanical assembly 5 drives described set of lenses 3 to regulate different distances voluntarily, realize different focusing situations, and control described camera 4 collecting test image voluntarily, then the imaging effect of described computer 6 pairs of testing images differentiates.Whole process, without the need to artificial participation, substantially increases operating efficiency, and avoids the error that artificial cognition brings, and accuracy rate is high.
Simultaneously, in order to improve the accuracy of differentiation, described camera testing device also comprises a darkroom 7, and described camera head fixing device 2 and described set of lenses 3 are positioned in described darkroom 7, prevent the imaging of interference light to testing image from having an impact, finally have influence on the result of differentiation.
Described device for image 1 can be display or slide projector, and at the image that described display or slide projector display are tested, certain described device for image 1 itself also can be entity test picture.When described device for image 1 adopts described slide projector, supplementary light source can also be set, described supplementary light source contributes to reducing the definition of image of test that described slide projector provides, make the definition of this image and lantern slide itself consistent, described supplementary light source can be arranged in described slide projector, also can be arranged at outside, as long as can reach the object of reduction test image definition, described supplementary light source can be LED light source.Except LED light source, described light source also can be any other light source that can strengthen illumination, as incandescent lamp, fluorescent lamp, electricity-saving lamp etc.
Camera testing device of the present invention, except simulating except different distance and focusing situation by regulating described set of lenses 3, obtain testing image by described camera 4 and can also differentiate the definition of camera, sensitivity, self-focusing speed, the parameter such as white balance and color rendition simultaneously, a kind of device realizes multiple judgement, easy to use, improve operating efficiency.
Camera Test method of the present invention, is provided with the analogue means that can simulate different camera distances between image to be tested and camera, tests the photographic effect of described camera under different camera distance by regulating described analogue means.
Specifically, described analogue means is adjustable lens group.Described set of lenses is the set of lenses as previously mentioned in testing apparatus, may also be the combination of the foregoing set of lenses of two or more, or is that varifocal mirror is first-class, all can realize technique effect of the present invention.Described image to be tested is provided by device for image, and described device for image can adopt any one in aforementioned testing apparatus.
For realizing better Detection results, avoid interference, method of testing of the present invention also by described image to be tested and camera as in the darkroom that light can be avoided to disturb.For the problem avoiding insufficient light to bring, the present invention is also provided with the supplementary light source for improving image definition, described supplementary light source can adopt foregoing any one.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, make some substituting or obvious modification without departing from the inventive concept of the premise, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. a camera testing device, comprise device for image, camera and fixture thereof that testing image is provided, it is characterized in that: also comprise and being arranged between described device for image from described fixture for simulating the set of lenses of different camera distance, described testing image forms the real image that a handstand is reduced after described set of lenses, and described camera observes by described set of lenses the real image that described handstand reduces can see a virtual image of amplifying; Described set of lenses has one or two or more sets of, often organize set of lenses to comprise optical axis and overlap and one of combination of the two or more convex lens of adjustable relative position, two or more concavees lens, convex lens and concavees lens, only described set of lenses need be regulated, without the need to mobile described device for image or described camera itself in the process utilizing described camera collection testing image.
2. camera testing device as claimed in claim 1, is characterized in that: also comprise the driver element driving described set of lenses to complete simulation different distance.
3. camera testing device as claimed in claim 1, it is characterized in that: also comprise a darkroom, described set of lenses and described camera head fixing device are positioned in described darkroom.
4. the camera testing device as described in as arbitrary in claim 1-3, is characterized in that: described device for image is any one in display screen, slide projector and entity test picture; When described device for image is described slide projector, be also provided with the supplementary light source for improving testing image definition; Described supplementary light source is any one in LED light source, incandescent light source, fluorescent light, electricity-saving lamp light source.
5. a Camera Test method, it is characterized in that: between image to be tested and camera, be provided with the analogue means that can simulate different camera distances, the photographic effect of described camera under different camera distance is tested by regulating described analogue means, described analogue means is adjustable lens group, described testing image forms the real image that a handstand is reduced after described set of lenses, and described camera observes by described set of lenses the real image that described handstand reduces can see a virtual image of amplifying; Described set of lenses has one or two or more sets of, often organize set of lenses to comprise optical axis and overlap and one of combination of the two or more convex lens of adjustable relative position, two or more concavees lens, convex lens and concavees lens, only described set of lenses need be regulated, without the need to mobile described image to be tested or described camera itself in the process utilizing described camera collection image to be tested.
6. Camera Test method as claimed in claim 5, is characterized in that: described image to be tested and camera are placed in the darkroom that light can be avoided to disturb.
7. the Camera Test method as described in claim 5 or 6, is characterized in that: described image to be tested is provided by device for image, is also provided with the supplementary light source for improving image definition.
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| CN201310056952.0A CN103118270B (en) | 2013-02-22 | 2013-02-22 | Camera testing device and camera testing method |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931957B (en) * | 2015-06-01 | 2018-05-11 | 广东欧珀移动通信有限公司 | A kind of distance measuring method and device based on mobile terminal |
| CN105959680B (en) * | 2016-04-29 | 2018-12-25 | 北京牡丹视源电子有限责任公司 | A kind of method and system for evaluating and testing web camera color rendition degree |
| CN106101561B (en) * | 2016-08-09 | 2019-06-04 | 青岛海信移动通信技术股份有限公司 | Camera focusing detection method and device |
| CN106303511A (en) * | 2016-08-17 | 2017-01-04 | 芜湖凯尔电气科技有限公司 | Home cinema instrument imaging detection device |
| CN106713908B (en) * | 2017-03-02 | 2019-01-29 | 中国电子科技集团公司第四十四研究所 | Device and control method for the test of multichannel CCD camera |
| CN110035277A (en) * | 2018-12-20 | 2019-07-19 | 云南师范大学 | A kind of test macro and test method of infrared imaging auto-focusing algorithm |
| CN109902365A (en) * | 2019-02-12 | 2019-06-18 | 哈尔滨新光光电科技股份有限公司 | A kind of laser light source simulation method |
| CN111220362B (en) * | 2020-01-19 | 2022-03-22 | Oppo广东移动通信有限公司 | Test method and test system |
| CN111366338B (en) * | 2020-04-24 | 2021-11-19 | 华中科技大学 | Imaging quality detection device and method of virtual image forming optical system |
| CN113433533B (en) * | 2021-07-09 | 2024-04-19 | 上海研鼎信息技术有限公司 | TOf camera testing device and testing method thereof |
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| CN1591070A (en) * | 2003-08-29 | 2005-03-09 | 京瓷株式会社 | Electronic apparatus |
| CN201226049Y (en) * | 2008-07-03 | 2009-04-22 | 久元电子股份有限公司 | Optical object distance simulating device for shortening total optical path |
| CN201282538Y (en) * | 2008-09-26 | 2009-07-29 | 比亚迪股份有限公司 | Test device for pick-up head |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1591070A (en) * | 2003-08-29 | 2005-03-09 | 京瓷株式会社 | Electronic apparatus |
| CN201226049Y (en) * | 2008-07-03 | 2009-04-22 | 久元电子股份有限公司 | Optical object distance simulating device for shortening total optical path |
| CN201282538Y (en) * | 2008-09-26 | 2009-07-29 | 比亚迪股份有限公司 | Test device for pick-up head |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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Granted publication date: 20150722 |