CN103491296A - Method for achieving high-speed camera shooting - Google Patents
Method for achieving high-speed camera shooting Download PDFInfo
- Publication number
- CN103491296A CN103491296A CN201310326629.0A CN201310326629A CN103491296A CN 103491296 A CN103491296 A CN 103491296A CN 201310326629 A CN201310326629 A CN 201310326629A CN 103491296 A CN103491296 A CN 103491296A
- Authority
- CN
- China
- Prior art keywords
- camera
- image
- array
- line
- video camera
- 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)
- Image Processing (AREA)
Abstract
The invention discloses a method for achieving high-speed camera shooting. The method includes the first step of enabling a photographed object to do linear motion on a shooting plane relative to an area-array video camera, wherein the motion direction of the photographed object is perpendicular to the line direction of a pixel array of the area-array video camera and is parallel to the column direction of the pixel array, the second step of reading line images obtained by each line of pixels in sequence, and the third step of restoring the line images through an image restoring algorithm of a linear-array video camera to obtain images, wherein the line frequency is P in the restoring process, the scanning time interval between two adjacent lines of pixels is recorded to be F, the distance between two adjacent lines of pixels is m, the working distance is H in the shooting process, the focal distance is h, the relative movement distance between the area-array video camera and the object within the time F is L, and the distance that m mapped on the photographed object is M=H*m/h and P=L/(F*L-F*M). By the adoption of the method, the shooting effect of the high-speed linear-array video camera is achieved through a common area-array camera, and cost is effectively reduced. The method is applicable to the fields of size measurement, size detection and the like in industry.
Description
Technical field
The present invention relates to image and generate the recovery field, especially relate to a kind of method that realizes high-speed camera by common area array camera.
Background technology
High-speed camera is in Industry Control, and many fields such as aircraft control, traffic monitoring all are widely used.But much higher times of the cost ratio common camera of high-speed camera.And the enterprise that can produce high-speed camera is also worldwide very few.
High-speed camera is divided into two types of Linear Array Realtime and planar array types, Linear Array Realtime is generally used for takes straight-line object, planar array type relatively is suitable for taking the object of random motion, area array camera also can be realized the function of high speed linear array video camera from the principle, is reduced into the effect of face battle array shooting under the control of software algorithm.
If we can enough common camera realize the shooting effect of high speed linear array video camera, that has just broken the Yi Tiaoxin road for a large amount of video camera producer.
State Intellectual Property Office of the People's Republic of China discloses the patent documentation that publication No. is CN10280075A on November 28th, 2012, title is based on image split-joint method and the device that line-scan digital camera is taken, concrete grammar is: comprising: image to be spliced is divided into to a plurality of rectangular area XiYj according to width directions X and length Y-direction, wherein, directions X is stitching direction, i=1 ~ m, j=1 ~ n; I is set, the j initial value is 1; The side-play amount of the lap of zoning XiYj and regional Xi+1Yj; The side-play amount that gained is calculated in judgement whether in the preset value scope, if set the side-play amount that the side-play amount of calculating gained is corresponding Xi, arranges i=i+1 and j=1 afterwards; J=j+1 is set if not; Repeat described calculating and determining step, until i=m or j=n; Complete splicing according to the side-play amount of described corresponding Xi.This scheme is calculated side-play amount by cutting apart intersection, has reduced the area that needs calculating section, thereby has improved splicing speed, but still be only applicable to line-scan digital camera, and can't obtain by common area array cameras the shooting effect of high speed linear array video camera.
Summary of the invention
The present invention solves that prior art is existing can't obtain the technical problem of the shooting effect of high speed linear array video camera by common area array cameras, the implementation method of the high-speed camera that provide a kind of shooting effect by common area array cameras acquisition high speed linear array video camera, effectively reduces costs.
The present invention is directed to above-mentioned technical problem is mainly solved by following technical proposals: a kind of implementation method of high-speed camera, realize high speed linear array video camera shooting effect by common area array camera, and step is as follows:
One, make subject opposite face array camera rectilinear motion on camera plane, the direction of motion is vertical and parallel with the column direction of pel array with the line direction of the pel array of area array camera;
Two, read successively the capable image that every a line pixel obtains;
Three, will go image recovers to obtain image with line array video camera Recovery image algorithm, line frequency during recovery is P, the time interval of remembering the picture element scan that two row are adjacent is F, distance between the adjacent pixel of two row is m, operating distance during shooting is H, and focal length is h, and in time F, the relative motion of area array camera and object distance is L, m be mapped on object apart from M=H * m/h, P=L/ (F * L-F * M).
As preferably, in described step 3, the algorithm adopted during Recovery image is liftering algorithm or Wiener filtering algorithm.
As preferably, this programme also comprises the image rectification flow process, is specially: (1) is set and is demarcated thing in pending subject image; (2) detect the boundary point of demarcating in thing; (3) solve the kinematic parameter of demarcating thing; (4) according to the result of calculation of step (3), the corresponding points in pending subject image are carried out to affine transformation, the image obtained after conversion is correcting image.By proofreading and correct the reduction degree that can make to improve final image.
Figure 1 shows that the work schematic diagram of line array video camera, the light-sensitive image vegetarian refreshments is " exposure " one by one, and the photosensitive pixel on line forms a frame, and the pixel line number of per second exposure is frame frequency.General high speed linear array video camera frame frequency does not wait to frames up to ten thousand at several thousand frames.
Figure 2 shows that the work schematic diagram of area array camera, photosensitive pixel is pointwise " exposure " line by line.First first element of " exposure " the first row, second pixel then, by that analogy, until that the first row pixel is all exposed is complete.Next second row that exposes again, the third line, to the last a line.Next again from first element of the first row.From first element of the first row, to last element of last column, end up being a frame.The number of times of whole pixels of having exposed each second is frame frequency.The frame frequency of typical case's high-speed area array camera is the hundreds of frame.
As shown in Figure 3, this programme is considered as a line array video camera by every a line pixel in Fig. 3 to the schematic diagram of common area array camera, a total n line array video camera (line number that n is common area array camera).The parameter of the common area array camera of current typical case of take is example:
Sensitive chip size: 5mm*5mm
Pixel scale: 640*480
Frame frequency: 30fps
Line frequency: 30*480=14400lps
Line space is from 5mm/480=10.4um
Pixel clock: 640*480*30=9.2MHz
As can be seen from the above data, line frequency reaches 1.4 ten thousand row/second, and this is the basis of realizing high-speed camera.The image that we obtain by every row pixel is spliced into new images again, just as obtain image with the ordinary lines array camera.
The triangle thing transverse movement to the right shown in Fig. 4 of take is example.For the ordinary lines array camera, because object of which movement, the image that the first row and the second line scanning obtain just as shown in Figure 4.But, because we use area array camera, between the first row and the second row pixel, a distance is arranged on sensitive chip, as shown in Figure 5.
The frame frequency that this result is equivalent to line array video camera has improved, if obtain the object image according to the algorithm of line array video camera Recovery image again, and will distortion.The method that solves distortion is exactly to adjust the frame frequency of the position ordinary lines array camera of the second row pixel when Recovery image.The principle of concrete method of adjustment is as follows:
Because common line frequency is known, so the time interval between scan line A and scan line B is known, be designated as F.
The movement velocity of subject is known, and in time F, the distance of its motion is designated as L.
As shown in Figure 6, operating distance and focal length are the basic parameters of video camera to the image-forming principle of video camera, are also known.
Distance on common area array camera sensitive chip between two row pixels is known, is designated as m.If the typical data provided with us, m=10.4um.
The distance that m is mapped on object is: M=operating distance * m/ focal length
The object L that moved in the time interval F of the video camera twice sweep of standard line frequency.That object moved line frequency interval time of L-M distance should be F-f, and the pass between them is:
(L-M)/L=(F-f)/F
Arrange above formula, the solution formula that obtains f is as follows:
f=M*F/L
Line frequency originally is 1/F, and the line frequency after adjustment is 1/ (F-f), is designated as P.Making the line frequency parameter with P when " lines " image restoration obtained with line scanning becomes normal picture gets final product.
The substantial effect that the present invention brings is, obtains the shooting effect of high speed linear array video camera by common area array cameras, effectively reduces costs, and has higher recovery degree, and algorithm simply is easy to realize.
The accompanying drawing explanation
Fig. 1 is the work schematic diagram of high speed linear array video camera;
Fig. 2 is the work schematic diagram of high-speed area array camera;
Fig. 3 is the schematic diagram of common area array camera;
Fig. 4 is that the high speed linear array video camera is taken triangle thing schematic diagram;
Fig. 5 is that a kind of common area array camera of the present invention is taken triangle thing schematic diagram;
Fig. 6 is a kind of common area array camera operating distance of the present invention and focal length schematic diagram.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment: the implementation method of a kind of high-speed camera of the present embodiment, realize high speed linear array video camera shooting effect by common area array camera, step is as follows:
One, make subject opposite face array camera rectilinear motion on camera plane, the direction of motion is vertical and parallel with the column direction of pel array with the line direction of the pel array of area array camera;
Two, read successively the capable image that every a line pixel obtains;
Three, will go image recovers to obtain image with line array video camera Recovery image algorithm, line frequency during recovery is P, the time interval of remembering the picture element scan that two row are adjacent is F, distance between the adjacent pixel of two row is m, and as shown in Figure 6, operating distance during shooting is H, focal length is h, in time F, the relative motion of area array camera and object distance is L, m be mapped on object apart from M=H * m/h, P=L/ (F * L-F * M).
The parameter of common area array camera is:
Sensitive chip size: 5mm*5mm
Pixel scale: 640*480
Frame frequency: 30fps
Line frequency 1/F:30*480=14400lps
Line space is from m:5mm/480=10.4um
Pixel clock: 640*480*30=9.2MHz
In step 3, the algorithm adopted during Recovery image is liftering algorithm or Wiener filtering algorithm.
This programme also comprises the image rectification flow process, is specially: (1) is set and is demarcated thing in pending subject image; (2) detect the boundary point of demarcating in thing; (3) solve the kinematic parameter of demarcating thing; (4) according to the result of calculation of step (3), the corresponding points in pending subject image are carried out to affine transformation, the image obtained after conversion is correcting image.By proofreading and correct the reduction degree that can make to improve final image.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more been used the terms such as area array camera, line frequency, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (3)
1. the implementation method of a high-speed camera, realize high speed linear array video camera shooting effect by common area array camera, it is characterized in that, step is as follows:
One, make subject opposite face array camera rectilinear motion on camera plane, the direction of motion is vertical and parallel with the column direction of pel array with the line direction of the pel array of area array camera;
Two, read successively the capable image that every a line pixel obtains;
Three, will go image recovers to obtain image with line array video camera Recovery image algorithm, line frequency during recovery is P, the time interval of remembering the picture element scan that two row are adjacent is F, distance between the adjacent pixel of two row is m, operating distance during shooting is H, and focal length is h, and in time F, the relative motion of area array camera and object distance is L, m be mapped on object apart from M=H * m/h, P=L/ (F * L-F * M).
2. the implementation method of a kind of high-speed camera according to claim 1, is characterized in that, in described step 3, the algorithm adopted during Recovery image is liftering algorithm or Wiener filtering algorithm.
3. the implementation method of a kind of high-speed camera according to claim 1 and 2, is characterized in that, also comprises the image rectification flow process, is specially: (1) is set and is demarcated thing in pending subject image; (2) detect the boundary point of demarcating in thing; (3) solve the kinematic parameter of demarcating thing; (4) according to the result of calculation of step (3), the corresponding points in pending subject image are carried out to affine transformation, the image obtained after conversion is correcting image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326629.0A CN103491296B (en) | 2013-07-30 | 2013-07-30 | A kind of implementation method of high-speed camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310326629.0A CN103491296B (en) | 2013-07-30 | 2013-07-30 | A kind of implementation method of high-speed camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103491296A true CN103491296A (en) | 2014-01-01 |
| CN103491296B CN103491296B (en) | 2016-05-25 |
Family
ID=49831229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310326629.0A Active CN103491296B (en) | 2013-07-30 | 2013-07-30 | A kind of implementation method of high-speed camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103491296B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780307A (en) * | 2015-05-04 | 2015-07-15 | 华天科技（昆山）电子有限公司 | Array lens imaging system and clear imaging method for high-speed moving object with the same |
| CN106643306A (en) * | 2016-12-30 | 2017-05-10 | 中国科学院长春光学精密机械与物理研究所 | High-speed imaging method and system for light screen target trajectory measuring system |
| CN106803889A (en) * | 2017-03-08 | 2017-06-06 | 吕盼稂 | A kind of intelligent high-speed image capture method and its device in blast process |
| CN109328455A (en) * | 2017-12-27 | 2019-02-12 | 深圳配天智能技术研究院有限公司 | Image acquiring device and image acquiring method |
| CN112584047A (en) * | 2020-12-11 | 2021-03-30 | 苏州优纳医疗器械有限公司 | Control method for continuous scanning imaging of area-array camera |
| CN113242360A (en) * | 2021-06-30 | 2021-08-10 | 浙江华睿科技股份有限公司 | Linear array camera and line frequency calculation method and device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0981245A2 (en) * | 1998-08-20 | 2000-02-23 | Canon Kabushiki Kaisha | Solid-state image sensing apparatus, control method therefor, basic layout of photoelectric conversion cell and storage medium |
| CN1959341A (en) * | 2006-11-17 | 2007-05-09 | 中国科学院上海光学精密机械研究所 | Optical imaging distance measuring device for single-aperture multiple imaging |
| CN101388952A (en) * | 2007-09-12 | 2009-03-18 | 三星电子株式会社 | Apparatus and method for restoring image |
| CN101961698A (en) * | 2010-08-04 | 2011-02-02 | 中国科学院自动化研究所 | Device and method for measuring poses of embedded type spraying gun in real time |
| CN102800075A (en) * | 2012-07-16 | 2012-11-28 | 宁波江丰生物信息技术有限公司 | Image splicing method and device based on linear array camera shooting |
-
2013
- 2013-07-30 CN CN201310326629.0A patent/CN103491296B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0981245A2 (en) * | 1998-08-20 | 2000-02-23 | Canon Kabushiki Kaisha | Solid-state image sensing apparatus, control method therefor, basic layout of photoelectric conversion cell and storage medium |
| CN1959341A (en) * | 2006-11-17 | 2007-05-09 | 中国科学院上海光学精密机械研究所 | Optical imaging distance measuring device for single-aperture multiple imaging |
| CN101388952A (en) * | 2007-09-12 | 2009-03-18 | 三星电子株式会社 | Apparatus and method for restoring image |
| CN101961698A (en) * | 2010-08-04 | 2011-02-02 | 中国科学院自动化研究所 | Device and method for measuring poses of embedded type spraying gun in real time |
| CN102800075A (en) * | 2012-07-16 | 2012-11-28 | 宁波江丰生物信息技术有限公司 | Image splicing method and device based on linear array camera shooting |
Non-Patent Citations (1)
| Title |
|---|
| 李国宁，刘妍妍，金龙旭: "用于动态目标跟踪的面阵CCD成像***", 《光学精密工程》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780307A (en) * | 2015-05-04 | 2015-07-15 | 华天科技（昆山）电子有限公司 | Array lens imaging system and clear imaging method for high-speed moving object with the same |
| CN104780307B (en) * | 2015-05-04 | 2018-01-16 | 华天科技（昆山）电子有限公司 | Array lens imaging system and its method for high-speed moving object blur-free imaging |
| CN106643306A (en) * | 2016-12-30 | 2017-05-10 | 中国科学院长春光学精密机械与物理研究所 | High-speed imaging method and system for light screen target trajectory measuring system |
| CN106643306B (en) * | 2016-12-30 | 2018-07-06 | 中国科学院长春光学精密机械与物理研究所 | A kind of high speed imaging method and its system for light curtain target trajectory measurement system |
| CN106803889A (en) * | 2017-03-08 | 2017-06-06 | 吕盼稂 | A kind of intelligent high-speed image capture method and its device in blast process |
| CN109328455A (en) * | 2017-12-27 | 2019-02-12 | 深圳配天智能技术研究院有限公司 | Image acquiring device and image acquiring method |
| CN109328455B (en) * | 2017-12-27 | 2020-10-16 | 深圳配天智能技术研究院有限公司 | Image acquisition device and image acquisition method |
| CN112584047A (en) * | 2020-12-11 | 2021-03-30 | 苏州优纳医疗器械有限公司 | Control method for continuous scanning imaging of area-array camera |
| CN112584047B (en) * | 2020-12-11 | 2021-10-01 | 苏州优纳医疗器械有限公司 | Control method for continuous scanning imaging of area-array camera |
| CN113242360A (en) * | 2021-06-30 | 2021-08-10 | 浙江华睿科技股份有限公司 | Linear array camera and line frequency calculation method and device thereof |
| CN113242360B (en) * | 2021-06-30 | 2023-07-21 | 浙江华睿科技股份有限公司 | Linear array camera and line frequency calculation method and device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103491296B (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103491296B (en) | A kind of implementation method of high-speed camera | |
| US10895731B2 (en) | Method and apparatus for imaging a sample using a microscope scanner | |
| CN101911671B (en) | Imaging device and optical axis control method | |
| US20120099005A1 (en) | Methods and systems for reading an image sensor based on a trajectory | |
| CN102739938B (en) | Camera head, pixel output level bearing calibration, camera and lens system | |
| US11024010B2 (en) | Super-resolution image sensor and producing method thereof | |
| US9258484B2 (en) | Image pickup apparatus and control method for same | |
| US20240031513A1 (en) | Method and apparatus for imaging a sample using a microscope scanner | |
| JP2014212462A (en) | Imaging device | |
| JP2008042907A (en) | Image sensor which improves image quality and image sensing method using it | |
| US6642497B1 (en) | System for improving image resolution via sensor rotation | |
| CN103595922A (en) | Imaging method based on electronic shutter exposure coding | |
| CN107211095B (en) | Method and apparatus for processing image | |
| CN103986936B (en) | A kind of video compress acquisition system and its acquisition method | |
| CN104125391B (en) | Image Sensor, electronic device and its focusing method | |
| US9869583B1 (en) | Image scanning on a sparsely populated focal plane array to achieve nyquist sampling | |
| CN102244729B (en) | Image capture apparatus and control method thereof | |
| CN106027881A (en) | Recovery method for image distortion resulting from column delay of image sensor | |
| CN107370925B (en) | Double-camera reflector unit image acquisition device | |
| CN110244445A (en) | A kind of digital pathology scanner for large area micro-imaging | |
| CN102572327A (en) | Image sensor with sampling control function and sampling method | |
| CN204069217U (en) | A kind of video compression acquisition system | |
| WO2022059335A1 (en) | Three-dimensional model generation method and three-dimensional model generation device | |
| CN109246343B (en) | Method for acquiring over-sampled image | |
| WO2020129715A1 (en) | Image correction device, image correction method, and program |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201120 Address after: 311800 No.16 Anhua village, Anhua Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Chen Weidi Address before: 1507 room 315800, international development building, Ningbo Free Trade Zone, Zhejiang Patentee before: NINGBO DIGITAL ELECTRONIC TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211027 Address after: 230000 room 108, building 30, Ankai South District, No. 97, Gefei Road, Luogang street, Baohe District, Hefei City, Anhui Province Patentee after: Hefei Shuangling Electronic Technology Co.,Ltd. Address before: 311800 No.16 Anhua village, Anhua Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Chen Weidi |