CN105628622A - Polarization imaging system based on three cameras - Google Patents
Polarization imaging system based on three cameras Download PDFInfo
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- CN105628622A CN105628622A CN201410623834.8A CN201410623834A CN105628622A CN 105628622 A CN105628622 A CN 105628622A CN 201410623834 A CN201410623834 A CN 201410623834A CN 105628622 A CN105628622 A CN 105628622A
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Abstract
The invention relates to a polarization imaging system based on three cameras. According to the present invention, with the polarization imaging system, the target radiation intensities in three different polarization directions can be simultaneously collected, the human error caused by the rotation of the polarization filter during the single lens collection can be avoided, and the standardization, the calibration and the testing on the system are performed; the system is simple and reliable, and has strong applicability to the polarization detection on the target area; the system comprises a CCD imaging module, an optical lens system, and an image acquisition and pre-processing system; and the front end connection of the image acquisition and pre-processing system uses three optical paths having the same hardware connection structure, wherein the connection structure of the one optical path is that an interference filter is connected to a polarization filter, the polarization filter is connected to the optical lens system, the optical lens system is connected to the CCD imaging module, the CCD imaging module is connected to the image acquisition and pre-processing system, the image acquisition and pre-processing system is connected to an image processing layer system, and the image processing layer system is connected to a target detection and analysis system.
Description
Technical field
The invention belongs to polarization information detection technique field, more particularly to one based on three camera polarized imaging systems.
Background technology
Based on a kind of polarization information detection technique that the detection method of polarization imaging is emerging in recent years, superiority in target recognition, classification, discovery vanishing target, Atmospheric components and aerosol detection etc. is increasingly subject to people's attention, and has embodied great advantage particularly in military affairs investigation, remote sensing of vegetation and aerosol context of detection.
Compared with traditional photoelectricity model checking method, in detection range, real-time, accuracy and intuitive etc., there is obvious advantage. 1996, the R �� digerWehner of the G �� borHorv �� th and Switzerland Universit tZ �� rich of Hungary E tv sUniversity adopted first and shoots with video-corder formula polarimetry mode (wide-fieldvideopolarimetry) detection; 1997, KennethJ.Voss and the YiLiu of U.S. UniversityofMiami developed a set of novel polarized radiation degree detection system based on fish eye lens and CCD camera; 2003, the Airborne Multi-band Polarization CCD Camera that Anbui Optical Machinery Inst., Chinese Academy of Sciences develops, adopt parallel optical structure, 3 tunnel light paths become Chinese character pin-shaped arrangement; 2007, YanCui and JinkuiChu et al. astronomical telescope and the homemade regional area polarization imaging experimental provision of fiber spectrometer, it is used for studying the polarization characteristic of atmospheric scattering light.
Recently as the progress of photoelectric device and camera technique, occur in that much novel polarized imaging system, such as polarized imaging system and segregation focal plane arrays (FPA) polarized imaging system etc. based on scalable Phase delay.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of based on three camera polarized imaging systems; The present invention can gather the target radiant intensity in 3 different polarization directions simultaneously, the personal error that when avoiding single-lens collection, rotatory polarization sheet brings, by the demarcation of system is calibrated and test, the precision �� t lock in time��15ms of camera, pixel distortion �� p��1pixel; Native system is simple and reliable, and the Polarization Detection of target area is had the stronger suitability.
For realizing the above-mentioned purpose of the present invention, the present invention adopts the following technical scheme that.
The present invention is a kind of based on three camera polarized imaging systems, including CCD image-forming module, optical lens system, image acquisition and pretreatment system; Its structural feature is: described image acquisition and pretreatment system front end are connected by three light paths of same hardware attachment structure; The attachment structure of one light path is that interferometric filter connects polaroid, described polaroid connects optical lens system, described optical lens system connects CCD image-forming module, described CCD image-forming module connects image acquisition and pretreatment system again, described image acquisition is connected image procossing layer system with pretreatment system, and the last linking objective of described image procossing layer system detects and the system of analysis.
As a preferred embodiment of the present invention, described CCD image-forming module adopts industrial digital CCD camera SV-1400FC; Described resolution is 1392 �� 1040, Pixel size is 4.65 �� m 4.65 ��m, maximum frame per second is 15fps, data-interface is IEEE1394a.
As the another kind of preferred version of the present invention, described polaroid adopts GCL-050004; The frame size of described polaroid is 50.8mm, clear aperature is that 45.0mm, extinction ratio are 100:1, and have protecting window.
As the another kind of preferred version of the present invention, described optical lens adopts LM6NCM; The focal length of described LM6NCM is 6mm, object distance range is that 0.1 ~ ��, deformation rate are-0.2%, are of a size of 34 �� 45.8mm.
The invention has the beneficial effects as follows.
The present invention is introducing on the basis of polarization imaging Cleaning Principle, and on the basis of existing polarized imaging system, it is provided that a kind of polarization imaging based on three cameras detects system; In order to improve the accuracy of Polarization Detection system, reduce and detect error accordingly, polarization imaging is detected system and has carried out corresponding calibration and test. Passing through the demarcation to system and calibration, single acquisition is consuming time is below 15ms, meets acquisition frame rate requirement, and the error of correction and registration is respectively less than 1 pixel, meets subsequent probe and analyzes requirement.
The present invention adopts the light path of three same hardware attachment structures, the target radiant intensity in 3 different polarization directions can be gathered simultaneously, the personal error that when avoiding single-lens collection, rotatory polarization sheet brings, by the demarcation of system is calibrated and test, the precision �� t lock in time��15ms of camera, pixel distortion �� p��1pixel; Native system is simple and reliable, and the Polarization Detection of target area is had the stronger suitability.
Accompanying drawing explanation
Fig. 1 is that a kind of population structure based on three camera polarized imaging systems of the present invention connects block diagram.
Fig. 2 is a kind of program flow diagram based on three camera polarized imaging systems of the present invention.
Detailed description of the invention
As it is shown in figure 1, be that a kind of population structure based on three camera polarized imaging systems of the present invention connects block diagram. In figure, including CCD image-forming module, optical lens system, image acquisition and pretreatment system; Its structural feature is: described image acquisition and pretreatment system front end are connected by three light paths of same hardware attachment structure; The attachment structure of one light path is that interferometric filter connects polaroid, described polaroid connects optical lens system, described optical lens system connects CCD image-forming module, described CCD image-forming module connects image acquisition and pretreatment system again, described image acquisition is connected image procossing layer system with pretreatment system, and the last linking objective of described image procossing layer system detects and the system of analysis.
The present invention is based on the Polarization Detection system of three cameras, and 3 light paths adopt identical hardware configuration, places interferometric filter and the polaroid of different analyzing angle before optical lens. The filtering by system optical filter of the reflected light radiation of target, the polarized light consistent with polaroid analyzing angle passes through polaroid, imaging is completed by CCD image-forming module, 3 passages obtain the target radiant intensity in 3 different analyzing directions, background processing system is by the process to three-channel polarization image, it is achieved that the polarization information of target area is obtained.
As a preferred embodiment of the present invention, described CCD image-forming module adopts industrial digital CCD camera SV-1400FC; Described resolution is 1392 �� 1040, Pixel size is 4.65 �� m 4.65 ��m, maximum frame per second is 15fps, data-interface is IEEE1394a.
As the another kind of preferred version of the present invention, described polaroid adopts GCL-050004; The frame size of described polaroid is 50.8mm, clear aperature is that 45.0mm, extinction ratio are 100:1, and have protecting window.
As the another kind of preferred version of the present invention, described optical lens adopts LM6NCM; The focal length of described LM6NCM is 6mm, object distance range is that 0.1 ~ ��, deformation rate are-0.2%, are of a size of 34 �� 45.8mm.
As in figure 2 it is shown, be a kind of program flow diagram based on three camera polarized imaging systems of the present invention. When program starts, first detection is connected to the camera number of PC and initializes camera, then passes through that to call camera subsidiary soft
Part kit function HVOpenDevice opens equipment. If equipment opens failure, program will report an error; If equipment is opened successfully, then initialisation image relief area, getting ready for receiving image, then initialisation image data are to the control of internal memory, and trigger signal, shoot, it is thus achieved that the ccd array data that camera returns. Data now also need to conversion and correction, use ConvertBayer2RGB function, the Bayer format view data of relief area, source is carried out Data Format Transform and is delivered in destination buffer. The data being stored in destination buffer after changing are RGB24 bit format; The last image collected that shows on program interface, and image is saved as BMP form be used for showing and achieving.
Claims (4)
1. based on three camera polarized imaging systems, including CCD image-forming module, optical lens system, image acquisition and pretreatment system; It is characterized in that: described image acquisition and pretreatment system front end are connected by three light paths of same hardware attachment structure; The attachment structure of one light path is that interferometric filter connects polaroid, described polaroid connects optical lens system, described optical lens system connects CCD image-forming module, described CCD image-forming module connects image acquisition and pretreatment system again, described image acquisition is connected image procossing layer system with pretreatment system, and the last linking objective of described image procossing layer system detects and the system of analysis.
2. one according to claim 1 is based on three camera polarized imaging systems, it is characterised in that: described CCD image-forming module adopts industrial digital CCD camera SV-1400FC; Described resolution is 1392 �� 1040, Pixel size is 4.65 �� m 4.65 ��m, maximum frame per second is 15fps, data-interface is IEEE1394a.
3. one according to claim 1 is based on three camera polarized imaging systems, it is characterised in that: described polaroid adopts GCL-050004; The frame size of described polaroid is 50.8mm, clear aperature is that 45.0mm, extinction ratio are 100:1, and have protecting window.
4. one according to claim 1 is based on three camera polarized imaging systems, it is characterised in that: described optical lens adopts LM6NCM; The focal length of described LM6NCM is 6mm, object distance range is that 0.1 ~ ��, deformation rate are-0.2%, are of a size of 34 �� 45.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410623834.8A CN105628622A (en) | 2014-11-07 | 2014-11-07 | Polarization imaging system based on three cameras |
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| CN201410623834.8A CN105628622A (en) | 2014-11-07 | 2014-11-07 | Polarization imaging system based on three cameras |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370307A (en) * | 2016-10-12 | 2017-02-01 | 青岛市光电工程技术研究院 | Method and device for water surface oil spill imaging detection |
| CN110426047A (en) * | 2019-08-30 | 2019-11-08 | 合肥工业大学 | The foundation and its distortion degree analysis method of atmospheric polarization type based on imaging theory |
| CN110779920A (en) * | 2019-10-30 | 2020-02-11 | 中国计量大学 | Pearl detection device |
-
2014
- 2014-11-07 CN CN201410623834.8A patent/CN105628622A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370307A (en) * | 2016-10-12 | 2017-02-01 | 青岛市光电工程技术研究院 | Method and device for water surface oil spill imaging detection |
| CN110426047A (en) * | 2019-08-30 | 2019-11-08 | 合肥工业大学 | The foundation and its distortion degree analysis method of atmospheric polarization type based on imaging theory |
| CN110779920A (en) * | 2019-10-30 | 2020-02-11 | 中国计量大学 | Pearl detection device |
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Application publication date: 20160601 |
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