CN101207833A - Method for checking optical centre bias of lens of digital camera - Google Patents
Method for checking optical centre bias of lens of digital camera Download PDFInfo
- Publication number
- CN101207833A CN101207833A CNA2006101576856A CN200610157685A CN101207833A CN 101207833 A CN101207833 A CN 101207833A CN A2006101576856 A CNA2006101576856 A CN A2006101576856A CN 200610157685 A CN200610157685 A CN 200610157685A CN 101207833 A CN101207833 A CN 101207833A
- Authority
- CN
- China
- Prior art keywords
- digital camera
- optical centre
- image
- lens
- brightness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Studio Devices (AREA)
Abstract
The invention relates to a detection method of the optical centre deviation of a digital camera lens; the optical axis of the camera lens is vertical to a flat light source with even brightness, the flat light source fills up the whole frame of the digital camera and then a picture is taken; the taken picture is input into a computer, each pixel data of the picture is obtained, and the average brightness value of the picture is calculated; all pixel points in the picture, the brightness values of which are equal to the average brightness value of the picture, are marked out; the abscissa average values and the ordinate average values of the pixel points which represent the actual coordinate of the optical centre are compared with the center coordinate of the picture, so as to acquire the pixel quantity and the deviation direction of the optical centre deviation. The detection method can objectively, efficiently and accurately detect the distance of the optical centre deviation of the digital camera lens.
Description
Technical field
The present invention relates to the detection method of the assessment of digital camera images quality, particularly a kind of optical centre bias of lens of digital camera.
Background technology
The large-scale application of digital imaging apparatus makes people more and more higher to the requirement of its quality, obtain high-quality digital picture, just must the quality information of digital picture in the processes such as the collection of digital picture, transmission, processing, record be detected and analyze, pinpoint the problems and in time improved.Promote and promote the application and the development of digital picture quality detection technique thus.The digital picture quality detection technique has caused insider's extensive concern.
Whether the center brightness whether light transmission of the camera lens of digital camera well has influence on the imaging photo is consistent with edge brightness.Whether the optical center overlaps the uniformity that not only influences photo with the geometric center of imageing sensor, and serious meeting forms dark angle around photo.
But for a long time, the consistent of optical center and geometric center can only be from designing assurance.Though be consistent on the Theoretical Calculation, regular meeting introduces error in manufacturing process, and how this error goes to measure is an open question always.
Summary of the invention
The detection method that the purpose of this invention is to provide a kind of optical centre bias of lens of digital camera, this method can detect the distance of optical centre bias of lens of digital camera objective, efficiently and accurately.
The present invention is achieved by the following technical solutions, may further comprise the steps:
Adjust the digital camera position and make the average planar light source of camera lens optical axis and brightness vertical, and make planar light source be full of the whole picture of digital camera, photography;
With the image input computer of taking, obtain each pixel data of this image, use the brightness value of these all pixels of image to calculate the average brightness of this image;
In described image, mark all pixels that brightness value equals this image brightness mean value, obtain the abscissa mean value and the ordinate mean value of these pixels, the center point coordinate of abscissa mean value and ordinate mean value and this image is compared, draw the pixel count and the offset direction of optical centre bias, the size of each pixel of the pixel count of described optical centre bias and this digital camera images transducer is multiplied each other promptly obtains the distance of this optical centre bias of lens of digital camera.
It is reference object that the present invention adopts even planar light source, in all pixels of being taken a picture, brightness equals the abscissa mean value and the ordinate mean value of the pixel of mean flow rate and represents actual photocentre coordinate, compare with the center point coordinate of photo, thus the pixel count and the offset direction that draw optical centre bias.This detection method can detect the distance of optical centre bias of lens of digital camera objective, efficiently and accurately.
Description of drawings
Fig. 1 is the result of detected optical centre bias of lens of digital camera in the present embodiment.
Embodiment
The detection method of this optical centre bias of lens of digital camera may further comprise the steps:
Adjust the digital camera position and make the average planar light source of camera lens optical axis and brightness vertical, and make planar light source be full of the whole picture of digital camera, photography;
With the image input computer of taking, obtain each pixel data of this image, use the brightness value of these all pixels of image to calculate the average brightness of this image;
In described image, mark all pixels that brightness value equals this image brightness mean value, obtain the abscissa mean value and the ordinate mean value of these pixels, the center point coordinate of abscissa mean value and ordinate mean value and this image is compared, draw the pixel count and the offset direction of optical centre bias, the size of each pixel of the pixel count of described optical centre bias and this digital camera images transducer is multiplied each other promptly obtains the distance of this optical centre bias of lens of digital camera.
The following describes the detailed process that detects optical centre bias of lens of digital camera with above-mentioned detection method.
Wherein, planar light source adopts the adjustable light source case of LSB-111XE multiple spot of Japanese kettle field motor.
Process of the test is as follows:
(four jiaos should be no more than ± 3LUX) open to the center brightness difference, adjust to 10LV with the LSB-111XE light-source box.
Adjust the distance of digital camera and LSB-111XE light-source box, guarantee that the camera lens optical axis is vertical with the light-source box plane, make light-source box be full of whole picture (not allowing the to occur black surround) photography of digital camera.
Photo is downloaded to computer, use image software to analyze.At first find out the average brightness of entire image, the pixel that all is equaled this average brightness is found out then, make the brightness contour, re-use sciagraphy and obtain the mean value of the abscissa of these pixels and ordinate as actual photocentre coordinate, the actual photocentre coordinate that to try to achieve is then compared with the center point coordinate of this image (being the geometric center point of camera image transducer), calculate the pixel count and the offset direction of optical centre bias, the size of every pixel of combining image transducer is promptly known the distance of optical centre bias.
Result of the test as shown in Figure 1, the A point is actual photocentre among the figure, coordinate is (1052,853), the B point is the central point of this image, coordinate is (1280,960), this digital camera lens photocentre take back 228 pixels, 107 pixels on the upper side.Inquire about the specifications of this transducer again, every pixel size is 2.2 microns of 2.2 microns *, can draw side-play amount and be: take back 501.6 microns, 235.4 microns on the upper side.
Use the method to detect the drift condition of digital camera lens photocentre, have objective, efficient, characteristic of accurate, the bigger testing efficiency that improved.
Claims (2)
1. the detection method of optical centre bias of lens of digital camera is characterized in that may further comprise the steps:
Adjust the digital camera position and make the average planar light source of camera lens optical axis and brightness vertical, and make described planar light source be full of the whole picture of digital camera, photography;
With the image input computer of taking, obtain each pixel data of this image, adopt the brightness value of these all pixels of image to calculate the average brightness of this image;
In described image, mark all pixels that brightness value equals this image brightness mean value, obtain the abscissa mean value and the ordinate mean value of these pixels, the center point coordinate of this abscissa mean value and ordinate mean value and this image is compared, draw the pixel count and the offset direction of optical centre bias, the size of each pixel of the pixel count of described optical centre bias and this digital camera images transducer is multiplied each other promptly obtains the distance of this optical centre bias of lens of digital camera.
2. the detection method of optical centre bias of lens of digital camera according to claim 1, it is characterized in that: planar light source adopts the adjustable light source case of the LSB-111XE multiple spot of Japanese kettle field motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610157685A CN101207833B (en) | 2006-12-19 | 2006-12-19 | Method for checking optical centre bias of lens of digital camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610157685A CN101207833B (en) | 2006-12-19 | 2006-12-19 | Method for checking optical centre bias of lens of digital camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101207833A true CN101207833A (en) | 2008-06-25 |
| CN101207833B CN101207833B (en) | 2010-05-19 |
Family
ID=39567629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610157685A Expired - Fee Related CN101207833B (en) | 2006-12-19 | 2006-12-19 | Method for checking optical centre bias of lens of digital camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101207833B (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018015A (en) * | 2012-12-26 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Device and method for detecting optical-axis offset of lens in equipment |
| CN104363390A (en) * | 2014-11-11 | 2015-02-18 | 广东中星电子有限公司 | Lens vignetting compensation method and system |
| CN104735445A (en) * | 2015-03-17 | 2015-06-24 | 航天东方红卫星有限公司 | Space camera flutter analysis method based on target image |
| CN104980730A (en) * | 2014-04-01 | 2015-10-14 | 宁波舜宇光电信息有限公司 | Method for positioning optical center on the basis of concentric circle theory |
| CN105120258A (en) * | 2015-07-20 | 2015-12-02 | 深圳市航盛电子股份有限公司 | Method and system for testing distortion rate of camera |
| CN105721861A (en) * | 2016-01-21 | 2016-06-29 | 北京中科慧眼科技有限公司 | Digital camera detection method and detection device |
| CN106125497A (en) * | 2016-09-08 | 2016-11-16 | 信利光电股份有限公司 | A kind of brightness uniformity detection method of wide-angle imaging module |
| CN106572346A (en) * | 2016-09-28 | 2017-04-19 | 深圳市泰吉通电子有限公司 | 360-degree single lens video data correction method and 360-degree single lens video data correction system |
| CN106683135A (en) * | 2015-11-09 | 2017-05-17 | 宁波舜宇光电信息有限公司 | Method for searching optic center of lens |
| CN106839976A (en) * | 2016-12-22 | 2017-06-13 | 歌尔科技有限公司 | A kind of method and device at detector lens center |
| CN107063640A (en) * | 2016-12-23 | 2017-08-18 | 歌尔科技有限公司 | A kind of backrest-type twin-lens light axis consistency measurement jig and its method of testing |
| CN108632604A (en) * | 2018-05-25 | 2018-10-09 | 歌尔科技有限公司 | The detection method and device of camera lens optical center |
| CN108769666A (en) * | 2018-05-03 | 2018-11-06 | 深圳睿晟自动化技术有限公司 | Optical center localization method, device, terminal device and the storage medium of light emitting module |
| CN109163888A (en) * | 2018-08-29 | 2019-01-08 | 歌尔股份有限公司 | Optical centre test method, device and equipment |
| CN109767428A (en) * | 2018-12-26 | 2019-05-17 | 中国科学院西安光学精密机械研究所 | A kind of dirty detection method of camera module |
| CN109982073A (en) * | 2019-04-09 | 2019-07-05 | 歌尔股份有限公司 | The detection method and device of camera module optical axis |
| CN110139094A (en) * | 2019-04-17 | 2019-08-16 | 信利光电股份有限公司 | A kind of optical center alignment schemes, optical center Coordinate calculation method and device |
| CN110248183A (en) * | 2019-05-31 | 2019-09-17 | 广州聚美视觉科技有限公司 | A kind of camera optical center test method |
| CN110736610A (en) * | 2019-10-22 | 2020-01-31 | 歌尔股份有限公司 | Method and device for measuring optical center deviation, storage medium and depth camera |
| CN111736237A (en) * | 2020-07-31 | 2020-10-02 | 上海眼控科技股份有限公司 | Radiation fog detection method and device, computer equipment and readable storage medium |
| CN112965261A (en) * | 2021-02-23 | 2021-06-15 | 山东仕达思医疗科技有限公司 | Method for quickly and effectively intelligently correcting microscope optical axis based on machine vision and implementation system thereof |
| CN112991202A (en) * | 2021-03-01 | 2021-06-18 | 歌尔科技有限公司 | Calibration method of optical center position, terminal device and computer readable storage medium |
| CN113489969A (en) * | 2021-06-30 | 2021-10-08 | 青岛维感科技有限公司 | Test method and device of TOF camera, control equipment and test equipment |
| CN113891068A (en) * | 2021-09-27 | 2022-01-04 | 安徽江淮汽车集团股份有限公司 | Optical axis precision detection method based on camera uniformity test auxiliary device |
| CN117593225A (en) * | 2023-11-14 | 2024-02-23 | 自行科技(武汉)有限公司 | Method, system, equipment and storage medium for processing optical center deviation under electronic rearview mirror |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428049C (en) * | 2004-07-21 | 2008-10-22 | 亚洲光学股份有限公司 | Monitoring device and method of optical center |
| CN1873389A (en) * | 2005-06-03 | 2006-12-06 | 展讯通信（上海）有限公司 | Method applicable to digital camera for calibrating optical center of camera lens |
| CN2840550Y (en) * | 2005-11-04 | 2006-11-22 | 中国科学院长春光学精密机械与物理研究所 | Apparatus for regulating camera position |
-
2006
- 2006-12-19 CN CN200610157685A patent/CN101207833B/en not_active Expired - Fee Related
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018015A (en) * | 2012-12-26 | 2013-04-03 | 青岛歌尔声学科技有限公司 | Device and method for detecting optical-axis offset of lens in equipment |
| WO2014101281A1 (en) * | 2012-12-26 | 2014-07-03 | 青岛歌尔声学科技有限公司 | Device and method for detecting optical-axis offset of lens in apparatus |
| CN103018015B (en) * | 2012-12-26 | 2016-01-20 | 青岛歌尔声学科技有限公司 | The apparatus and method of the light shaft offset of camera lens in checkout equipment |
| CN104980730A (en) * | 2014-04-01 | 2015-10-14 | 宁波舜宇光电信息有限公司 | Method for positioning optical center on the basis of concentric circle theory |
| CN104980730B (en) * | 2014-04-01 | 2019-04-26 | 宁波舜宇光电信息有限公司 | A method of optical center is positioned based on concentric circles theory |
| CN104363390A (en) * | 2014-11-11 | 2015-02-18 | 广东中星电子有限公司 | Lens vignetting compensation method and system |
| CN104735445A (en) * | 2015-03-17 | 2015-06-24 | 航天东方红卫星有限公司 | Space camera flutter analysis method based on target image |
| CN105120258A (en) * | 2015-07-20 | 2015-12-02 | 深圳市航盛电子股份有限公司 | Method and system for testing distortion rate of camera |
| CN106683135A (en) * | 2015-11-09 | 2017-05-17 | 宁波舜宇光电信息有限公司 | Method for searching optic center of lens |
| CN105721861A (en) * | 2016-01-21 | 2016-06-29 | 北京中科慧眼科技有限公司 | Digital camera detection method and detection device |
| CN106125497A (en) * | 2016-09-08 | 2016-11-16 | 信利光电股份有限公司 | A kind of brightness uniformity detection method of wide-angle imaging module |
| CN106572346B (en) * | 2016-09-28 | 2019-02-26 | 深圳市泰吉通电子有限公司 | 360 degree of monoscopic video data correcting methods of one kind and correction system |
| CN106572346A (en) * | 2016-09-28 | 2017-04-19 | 深圳市泰吉通电子有限公司 | 360-degree single lens video data correction method and 360-degree single lens video data correction system |
| CN106839976A (en) * | 2016-12-22 | 2017-06-13 | 歌尔科技有限公司 | A kind of method and device at detector lens center |
| CN106839976B (en) * | 2016-12-22 | 2020-05-12 | 歌尔科技有限公司 | Method and device for detecting lens center |
| CN107063640A (en) * | 2016-12-23 | 2017-08-18 | 歌尔科技有限公司 | A kind of backrest-type twin-lens light axis consistency measurement jig and its method of testing |
| CN108769666A (en) * | 2018-05-03 | 2018-11-06 | 深圳睿晟自动化技术有限公司 | Optical center localization method, device, terminal device and the storage medium of light emitting module |
| CN108632604A (en) * | 2018-05-25 | 2018-10-09 | 歌尔科技有限公司 | The detection method and device of camera lens optical center |
| CN109163888A (en) * | 2018-08-29 | 2019-01-08 | 歌尔股份有限公司 | Optical centre test method, device and equipment |
| CN109767428A (en) * | 2018-12-26 | 2019-05-17 | 中国科学院西安光学精密机械研究所 | A kind of dirty detection method of camera module |
| CN109982073B (en) * | 2019-04-09 | 2020-11-13 | 歌尔光学科技有限公司 | Method and device for detecting optical axis of camera module |
| CN109982073A (en) * | 2019-04-09 | 2019-07-05 | 歌尔股份有限公司 | The detection method and device of camera module optical axis |
| CN110139094A (en) * | 2019-04-17 | 2019-08-16 | 信利光电股份有限公司 | A kind of optical center alignment schemes, optical center Coordinate calculation method and device |
| CN110248183A (en) * | 2019-05-31 | 2019-09-17 | 广州聚美视觉科技有限公司 | A kind of camera optical center test method |
| CN110736610A (en) * | 2019-10-22 | 2020-01-31 | 歌尔股份有限公司 | Method and device for measuring optical center deviation, storage medium and depth camera |
| CN111736237A (en) * | 2020-07-31 | 2020-10-02 | 上海眼控科技股份有限公司 | Radiation fog detection method and device, computer equipment and readable storage medium |
| CN112965261A (en) * | 2021-02-23 | 2021-06-15 | 山东仕达思医疗科技有限公司 | Method for quickly and effectively intelligently correcting microscope optical axis based on machine vision and implementation system thereof |
| CN112991202A (en) * | 2021-03-01 | 2021-06-18 | 歌尔科技有限公司 | Calibration method of optical center position, terminal device and computer readable storage medium |
| CN113489969A (en) * | 2021-06-30 | 2021-10-08 | 青岛维感科技有限公司 | Test method and device of TOF camera, control equipment and test equipment |
| CN113891068A (en) * | 2021-09-27 | 2022-01-04 | 安徽江淮汽车集团股份有限公司 | Optical axis precision detection method based on camera uniformity test auxiliary device |
| CN113891068B (en) * | 2021-09-27 | 2022-09-16 | 安徽江淮汽车集团股份有限公司 | Optical axis precision detection method based on camera uniformity test auxiliary device |
| CN117593225A (en) * | 2023-11-14 | 2024-02-23 | 自行科技(武汉)有限公司 | Method, system, equipment and storage medium for processing optical center deviation under electronic rearview mirror |
| CN117593225B (en) * | 2023-11-14 | 2024-05-28 | 自行科技(武汉)有限公司 | Method, system, equipment and storage medium for processing optical center deviation under electronic rearview mirror |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101207833B (en) | 2010-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101207833B (en) | Method for checking optical centre bias of lens of digital camera | |
| WO2017092631A1 (en) | Image distortion correction method for fisheye image, and calibration method for fisheye camera | |
| US8400505B2 (en) | Calibration method, calibration device, and calibration system including the device | |
| CN109100363B (en) | Method and system for distinguishing defects of attached foreign matters from dust | |
| JP3937024B2 (en) | Detection of misalignment, pattern rotation, distortion, and misalignment using moiré fringes | |
| TWI484283B (en) | Image measurement method, image measurement apparatus and image inspection apparatus | |
| JP4436810B2 (en) | Display multi-angle measuring system and method | |
| CN106485758B (en) | Unmanned aerial vehicle camera calibration device, calibration method and assembly line calibration implementation method | |
| CN111025701B (en) | Curved surface liquid crystal screen detection method | |
| TW201521426A (en) | Detection method for camera | |
| WO2019105315A1 (en) | Method and system for testing field of view | |
| CN111586401B (en) | Optical center testing method, device and equipment | |
| US10375383B2 (en) | Method and apparatus for adjusting installation flatness of lens in real time | |
| CN101673043B (en) | Wide-angle distortion testing system and method | |
| TW201326735A (en) | Method and system for measuring width | |
| CN107643611A (en) | A kind of automatic checkout system of liquid crystal display and backlight assembly precision | |
| KR101578029B1 (en) | Apparatus and method for correcting image distortion | |
| TWI420229B (en) | Method for measuring modulation transfer function value of lens | |
| TW201234235A (en) | Method and system for calculating calibration information for an optical touch apparatus | |
| CN210571299U (en) | System for measuring optical parameters of small-field projection module | |
| CN112763495A (en) | Mobile phone battery size and appearance defect detection system and detection method | |
| CN106358037B (en) | lens detection method | |
| TWI351868B (en) | ||
| TWI383132B (en) | System and method for measuring field of view of an optical system | |
| JP6196148B2 (en) | Defocus control device and defocus control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20080625 Assignee: TCL business information technology (Huizhou) Limited by Share Ltd Assignor: TCL Digital Technology (Shenzhen) Co., Ltd. Contract record no.: 2012440020466 Denomination of invention: Method for checking optical centre bias of lens of digital camera Granted publication date: 20100519 License type: Exclusive License Record date: 20121228 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171108 Address after: 516006 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 19 district Patentee after: TCL New Technology (Huizhou) Co., Ltd. Address before: 518057 TCL building, south of Nanshan District hi tech Development Zone, Shenzhen, Guangdong Patentee before: TCL Digital Technology (Shenzhen) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20201219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |