CN103115685A - Infrared multi-detector combined detecting device and infrared detecting method - Google Patents
Infrared multi-detector combined detecting device and infrared detecting method Download PDFInfo
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- CN103115685A CN103115685A CN201310075336XA CN201310075336A CN103115685A CN 103115685 A CN103115685 A CN 103115685A CN 201310075336X A CN201310075336X A CN 201310075336XA CN 201310075336 A CN201310075336 A CN 201310075336A CN 103115685 A CN103115685 A CN 103115685A
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Abstract
The invention relates to an infrared multi-detector combined detecting device and an infrared detecting method. The detecting device comprises an optical portion, a circuit portion, a connection and fixation portion and an imaging portion, wherein the optical portion comprises a front group optical system, a rectangular pyramid assembly and a rear group optical system; and the imaging portion comprises four infrared detectors. The infrared detecting method includes powering up the system, receiving control orders, and subjecting the infrared detectors to synchronous output control, correction control, image correction, and image rectification and fusion so as to achieve seamless output of images. The device and the method have the advantages that by means of partial array infrared detectors in prior art, the process is simple, the manufacturing is easy, and costs are relatively low; and a plurality of the partial array infrared detectors are combined with corresponding optical systems, view fields are broadened on the premise that the resolution ratio is not reduced, even seamless output of infrared images is achieved, and infrared detection with large view fields and high resolution ratio is achieved.
Description
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Technical field
The present invention relates to a kind of infrared multidetector combined detection device and infrared acquisition method, refer in particular to a kind of Electro-Optical Sensor Set and infrared acquisition method that realizes large visual field, the seamless output of the infrared multidetector combination image of high resolving power.
Background technology
Infrared eye is owing to being subject to the operating distance traction, the long-focus infrared system, the visual field is less, code acquisition target difficulty, often need the guiding of radar or system, lack the utonomous working ability, this just greatly reduces practicality and the task performance of equipment, and its main cause is subject to the restriction of large area array infrared detector.
Large visual field, high resolving power are the key factors in electro-optical system, because this has influence on the quality of a series of performances of electro-optical system.The manufacturing technology that a kind of high density infrared focal plane array is arranged in existing branch art, but its technique is more complicated, and manufacture difficulty is large, and cost is high, therefore, the focal plane arrays (FPA) of prior art and this class of large tracts of land starring array large battle array, high-resolution detector are difficult to obtain large-scale application.It is the partial array infrared eye that prior art also has a kind of, although it is simpler to have technique, easily makes, and the relatively low advantage of cost, its visual field and resolution are again not as good as focal plane arrays (FPA) and large battle array of this class of large tracts of land starring array, high-resolution detector.
Summary of the invention
The objective of the invention is: overcome the deficiencies in the prior art, provide a kind of technique of the partial array infrared eye that utilizes prior art simpler, easily make, the relatively low advantage of cost, with the combination of a plurality of partial array infrared eyes and respective optical system, realize large visual field, high-resolution infrared multidetector combined detection device.
Another object of the present invention is to carry out the method for infrared acquisition with infrared multidetector combined detection device of the present invention.
The technical scheme of the infrared multidetector combined detection of the present invention device is:
A kind of infrared multidetector combined detection device, its opticator comprises, and: l has front group of optical system of concentric object lens, and 1 rectangular pyramid assembly with rectangular pyramid catoptron is organized optical system after also having 4, consists of altogether the aperture and divides the visual field infrared optical system; Circuit part comprises: power module, synchronization control circuit, infrared image combination correction circuit, Image Mosaics circuit, and interface circuit; Connect and fixation kit comprises: Connection Block and for the bearing of fixed connecting base; Imaging moiety comprises: 4 infrared eyes and be used for 4 infrared eye supports of installation infrared detector, and 4 circuit board supports; The opposite position of described front group of optical system, rectangular pyramid assembly and 4 infrared eyes is: according to the concentric object lens of the light path in the visual field through front group of optical system, make final picture point become the picture of four separation after the rectangular pyramid catoptron of rectangular pyramid assembly, the target surface of 4 infrared eyes overlaps with each picture point to determine again; Have towards different installed surfaces on described infrared eye support, be used for light path and realize that by this installed surface the adjusting of space exploration angle arrives the target surface of 4 infrared eyes after by optical system; The target surface of described infrared eye, infrared eye support and circuit board support and power module are fixed on Connection Block.
Described infrared multidetector combined detection device has the adjustment screw on the infrared eye support, be used for adjusting target surface and theoretical image planes angle and the up and down side-play amount of infrared eye.
Described infrared multidetector combined detection device, its synchronization control circuit, infrared image combination correction circuit, Image Mosaics circuit and interface circuit are arranged on circuit board support.
Described infrared multidetector combined detection device, its concentric object lens are for regulating the object lens of visual field.
Described infrared multidetector combined detection device, its synchronization control circuit adopts same clock source, utilize synchronized transmission and acceptance to realize the synchronous output of 4 infrared eyes, obtain the corresponding scene image of synchronization, control simultaneously 4 integral time that infrared eye is identical, image output same type image is set; Infrared image combination correction circuit comprises DSP and FPGA hardware, be used for the non-homogeneous combination correction of infrared image, wherein DSP mainly is responsible for the management of circuit board, the calculating of nonuniformity correction table, FLASH1 deposits program, FLASH2 is used for depositing coefficient table, and FPGA and SRAM are used for realizing real time correction; Infrared image combination correction circuit also is used for image distortion correction, and by the distortion of 4 infrared eye output images is demarcated, FLASH1 deposits program, and FLASH2 is used for depositing distortion calibration coefficient table; The Image Mosaics circuit comprises DSP and FPGA hardware, and the correcting image after 4 tunnel outputs is carried out the registration fusion treatment, realizes the seamless spliced output of image; Interface circuit is used for realizing the coordinating and unifying of 4 infrared eyes, infrared image combination correction circuit, Image Mosaics circuit and host computer each several part.
The method of carrying out infrared acquisition with the infrared multidetector combined detection of the present invention device is:
At first the combined detection device being carried out system powers on, receive the external control order by synchronization control circuit again, 4 infrared eyes are carried out synchronous output control in realization and combination correction is controlled, then by the image after infrared image combination correction circuit output combination correction, then 4 road images are carried out distortion correction; The image of this distortion correction output carries out image registration and mixing operation through the Image Mosaics circuit, realizes the seamless output of image.
Described infrared acquisition method, its Image Mosaics circuit is to receive the correction of infrared image combination correction circuit output and the 4 width image frames of regulating through AGC, then carrying out Image Mosaics shows, and move up and down according to the registration point that each width subgraph is carried out in instruction, switch image after display splicing and independent infrared subgraph according to instruction.
Carry out the image processing method of infrared acquisition with infrared multidetector combined detection device of the present invention, comprise the steps:
The first step, the image combining nonuniformity correction: the image to infrared eye output makes up non-homogeneous combination correction, realizes that the image homogeneity of infrared image of large visual field is consistent;
Second step, image distortion correction: the process of distortion correction is exactly to complete the actual picture of distortion to the conversion of distortionless desirable picture, adopts and approaches the distortion curve bearing calibration, through demarcating the storage distortion factor;
The 3rd step, image registration: select suitable image registration, seek the relative position of two width adjacent images, find out registration point, obtain size and the subimage position relationship of stitching image;
The 4th step, image co-registration: with doubling of the image zone by average weighted method, pixel value is by the synthetic new image of certain weights addition.
principle of the present invention is: utilize aperture minute visual field infrared optical system altogether, beam splitting system by twice imaging, a larger visual field is divided into four little visual fields, image in the target surface of detector, multidetector is subjected to synchro control to export corresponding scene image in the same time through opto-electronic conversion, process through image synthesis and comprise multidetector heterogeneity combination correction, image distortion correction, view data parallel processing and combination view field image splicing reconstruction form high-resolution seamless combination image, make four small field of view of separation be reassembled into a larger view field image.
The significant technique effect of the present invention mainly contains:
1, this transmitting apparatus is by adopting the infrared optical system of minute visual field, common aperture, adopt combined detection technology, many infrared eyes splicing, image fusion technology, multidetector synchronously to export the technological means such as control technology, multidetector combination correction technology, the image visual field has increased nearly one times than the system of same simple detector, has realized large visual field, high resolving power infrared acquisition; 2, technique is simpler, easily makes, and cost is relatively low; 3, opened up the new way of infrared large planar array detector research; 4, easy operating of the present invention, be widely used.
Description of drawings
Fig. 1 is sniffer optical system schematic diagram of the present invention;
Fig. 2 is sniffer structural representation of the present invention;
Fig. 3 is sniffer Digital Video Processing plate structure theory diagram of the present invention;
Fig. 4 is sniffer electrical structure theory diagram of the present invention;
Fig. 5 is the detection method flow chart of sniffer of the present invention.
Reference numeral name in figure is called: 1-front group optical system, 2-rectangular pyramid assembly, 3-organize afterwards optical system, 4-Connection Block, 5-power module, 6-infrared eye, 7-circuit board support, 8-infrared eye support, 9-bearing, 10-synchronization control circuit, 11-infrared image combination correction circuit, 12-Image Mosaics circuit, 13-interface circuit, 14-adjustment screw.
Embodiment
Embodiment 1:
Below with the present embodiment, the infrared multidetector combined detection of the present invention device to be described further by reference to the accompanying drawings:
As shown in Fig. 1-4, be an embodiment of infrared multidetector combined detection device, Fig. 1 is a schematic cross-section of opticator, another vertical cross-section is identical with Fig. 1.Opticator comprises: 1,1 of the front group of optical system that l has concentric object lens has the rectangular pyramid assembly 2 of rectangular pyramid catoptron, organizes optical system 3 after also having 4, consists of altogether the aperture and divides the visual field infrared optical system; Circuit part comprises: power module 5, synchronization control circuit 10, infrared image combination correction circuit 11, Image Mosaics circuit 12, and interface circuit 13; Connect and fixation kit comprises: Connection Block 4 and for the bearing 9 of fixed connecting base 4; Imaging moiety comprises: 4 infrared eyes 6 and be used for 4 infrared eye supports 8 of installation infrared detector 6, and 4 circuit board supports 7; The opposite position of described front group of optical system 1, rectangular pyramid assembly 2 and 4 infrared eyes 6 is: according to the concentric object lens of the light path in the visual field through front group of optical system 1, make final picture point become the picture of four separation after the rectangular pyramid catoptron of rectangular pyramid assembly 2, the target surface of 4 infrared eyes 6 overlaps with each picture point to determine again; Have towards different installed surfaces on described infrared eye support 8, be used for light path and realize that by this installed surface the adjusting of space exploration angle arrives the target surface of 4 infrared eyes 6 after by optical system; The target surface of described infrared eye 6, infrared eye support 8 and circuit board support 7 and power module 5 are fixed on Connection Block 4.The screw 14 of adjustment is arranged on infrared eye support 8, be used for adjusting target surface and theoretical image planes angle and the up and down side-play amount of infrared eye 6.Described synchronization control circuit 10, infrared image combination correction circuit 11, Image Mosaics circuit 12 and interface circuit 13 are arranged on circuit board support 7.Described concentric object lens are for regulating the object lens of visual field.As shown in Fig. 2,3, wherein Fig. 3 is sniffer Digital Video Processing plate structure theory diagram of the present invention, described synchronization control circuit 10 adopts same clock source, utilize synchronized transmission and acceptance to realize the synchronous output of 4 infrared eyes 6, obtain the corresponding scene image of synchronization, control simultaneously 4 integral time that infrared eye 6 is identical, image output same type image is set; Infrared image combination correction circuit 11 comprises DSP and FPGA hardware, be used for the non-homogeneous combination correction of infrared image, wherein DSP mainly is responsible for the management of circuit board, the calculating of nonuniformity correction table, FLASH1 deposits program, FLASH2 is used for depositing coefficient table, and FPGA and SRAM are used for realizing real time correction; Infrared image combination correction circuit 11 also is used for image distortion correction, and by the distortion of 4 infrared eye 6 output images is demarcated, FLASH1 deposits program, and FLASH2 is used for depositing distortion calibration coefficient table; Image Mosaics circuit 12 comprises DSP and FPGA hardware, and the correcting image after 4 tunnel outputs is carried out the registration fusion treatment, realizes the seamless spliced output of image; Interface circuit 13 is used for realizing the coordinating and unifying of 4 infrared eyes 6, infrared image combination correction circuit 11, Image Mosaics circuit 12 and host computer each several part.
As shown in Figure 4, be sniffer electrical structure theory diagram of the present invention.Power module provides needed power supply for each circuit and infrared eye, and power module has overvoltage, overcurrent, short circuit, overheat protective function, and the little efficient of volume is high.Interface circuit is realized the coordinating and unifying of the each several parts such as 4 infrared eyes, image processing, distortion and nonuniformity correction, splicing circuit, host computer.The signal that synchronization control circuit offers the digiboard of four infrared assemblies simultaneously has: four synchronizing clock signals, and four synchronous reset signals, and transmit with differential pair, antijamming capability is stronger like this.Infrared assembly and starts simultaneously with the logic on reset signal control figure plate and begins counting under same clock reference, must be arranged to identical value integral time, so just can guarantee that the vision signal that four infrared assemblies export is synchronous.The combination correction circuit is to realize by general digital Video processing plate.The Image Mosaics circuit splices the fusion Graphics Processing to four road images.
Embodiment 2:
Below with the present embodiment, the method for carrying out infrared acquisition with the infrared multidetector combined detection of the present invention device to be described further by reference to the accompanying drawings:
As shown in Fig. 2,5, at first the combined detection device being carried out system powers on, receive the external control order by synchronization control circuit 10 again, 4 infrared eyes 6 are carried out synchronous output control in realization and combination correction is controlled, then by the image after infrared image combination correction circuit 11 output combination corrections, then 4 road images are carried out distortion correction; The image of this distortion correction output carries out image registration and mixing operation through Image Mosaics circuit 12, realizes the seamless output of image.Described Image Mosaics circuit 12 is to receive the correction of infrared image combination correction circuit 11 outputs and the 4 width image frames of regulating through AGC, then carrying out Image Mosaics shows, and move up and down according to the registration point that each width subgraph is carried out in instruction, switch image after display splicing and independent infrared subgraph according to instruction.
Embodiment 3:
Be below with the present embodiment, the image processing method that carries out infrared acquisition with infrared multidetector combined detection device of the present invention to be described further by reference to the accompanying drawings: this image processing method comprises the steps:
The first step, the image combining nonuniformity correction: the image to infrared eye 6 output makes up non-homogeneous combination correction, realizes that the image homogeneity of infrared image of large visual field is consistent;
Second step, image distortion correction: the process of distortion correction is exactly to complete the actual picture of distortion to the conversion of distortionless desirable picture, adopts and approaches the distortion curve bearing calibration, through demarcating the storage distortion factor;
The 3rd step, image registration: select suitable image registration, seek the relative position of two width adjacent images, find out registration point, obtain size and the subimage position relationship of stitching image;
The 4th step, image co-registration: with doubling of the image zone by average weighted method, pixel value is by the synthetic new image of certain weights addition.
Claim protection domain of the present invention is not limited to above-described embodiment.
Claims (8)
1. one kind infrared multidetector combined detection device is characterized in that:
Opticator comprises, and: l has the front group of optical system (1) of concentric object lens, and 1 rectangular pyramid assembly (2) with rectangular pyramid catoptron is organized optical system (3) after also having 4, consists of altogether the aperture and divides the visual field infrared optical system;
Circuit part comprises: power module (5), synchronization control circuit (10), infrared image combination correction circuit (11), Image Mosaics circuit (12), and interface circuit (13);
Connect and fixation kit comprises: Connection Block (4) and for the bearing (9) of fixed connecting base (4);
Imaging moiety comprises: 4 infrared eyes (6) and be used for 4 infrared eye supports (8) of installation infrared detector (6), and 4 circuit board supports (7);
The opposite position of described front group of optical system (1), rectangular pyramid assembly (2) and 4 infrared eyes (6) is: according to the concentric object lens of the light path in the visual field through front group of optical system (1), make final picture point become the picture of four separation after the rectangular pyramid catoptron of rectangular pyramid assembly (2), the target surface of 4 infrared eyes (6) overlaps with each picture point to determine again; Have towards different installed surfaces on described infrared eye support (8), be used for light path and realize that by this installed surface the adjusting of space exploration angle arrives the target surface of 4 infrared eyes (6) after by optical system; The target surface of described infrared eye (6), infrared eye support (8) and circuit board support (7) and power module (5) are fixed on Connection Block (4).
2. infrared multidetector combined detection device according to claim 1, is characterized in that: adjustment screw (14) is arranged on infrared eye support (8), be used for adjusting target surface and theoretical image planes angle and the up and down side-play amount of infrared eye (6).
3. infrared multidetector combined detection device according to claim 1, it is characterized in that: synchronization control circuit (10), infrared image combination correction circuit (11), Image Mosaics circuit (12) and interface circuit (13) are arranged on circuit board support (7).
4. infrared multidetector combined detection device according to claim 1 is characterized in that: object lens are for regulating the object lens of visual field with one heart.
5. infrared multidetector combined detection device according to claim 1 is characterized in that:
Synchronization control circuit (10) adopts same clock source, utilize synchronized transmission and acceptance to realize the synchronous output of 4 infrared eyes (6), obtain the corresponding scene image of synchronization, control simultaneously 4 infrared eyes (6) identical integral time, image output same type image is set;
Infrared image combination correction circuit (11) comprises DSP and FPGA hardware, be used for the non-homogeneous combination correction of infrared image, wherein DSP mainly is responsible for the management of circuit board, the calculating of nonuniformity correction table, FLASH1 deposits program, FLASH2 is used for depositing coefficient table, and FPGA and SRAM are used for realizing real time correction; Infrared image combination correction circuit (11) also is used for image distortion correction, and by the distortion of 4 infrared eyes (6) output image is demarcated, FLASH1 deposits program, and FLASH2 is used for depositing distortion calibration coefficient table;
Image Mosaics circuit (12) comprises DSP and FPGA hardware, and the correcting image after 4 tunnel outputs is carried out the registration fusion treatment, realizes the seamless spliced output of image;
Interface circuit (13) is used for realizing the coordinating and unifying of 4 infrared eyes (6), infrared image combination correction circuit (11), Image Mosaics circuit (12) and host computer each several part.
6. method of carrying out infrared acquisition with infrared multidetector combined detection device claimed in claim 1, it is characterized in that: at first the combined detection device is carried out system and power on, receive the external control order by synchronization control circuit (10) again, 4 infrared eyes (6) are carried out synchronous output control in realization and combination correction is controlled, then by the image after infrared image combination correction circuit (11) output combination correction, then 4 road images are carried out distortion correction; The image of this distortion correction output carries out image registration and mixing operation through Image Mosaics circuit (12), realizes the seamless output of image.
7. infrared acquisition method according to claim 6, it is characterized in that: Image Mosaics circuit (12) is to receive the correction of infrared image combination correction circuit (11) output and the 4 width image frames of regulating through AGC, then carrying out Image Mosaics shows, and move up and down according to the registration point that each width subgraph is carried out in instruction, switch image after display splicing and independent infrared subgraph according to instruction.
8. an image processing method that carries out infrared acquisition with infrared multidetector combined detection device claimed in claim 1, comprise the steps:
The first step, the image combining nonuniformity correction: the image to infrared eye (6) output makes up non-homogeneous combination correction, realizes that the image homogeneity of infrared image of large visual field is consistent;
Second step, image distortion correction: the process of distortion correction is exactly to complete the actual picture of distortion to the conversion of distortionless desirable picture, adopts and approaches the distortion curve bearing calibration, through demarcating the storage distortion factor;
The 3rd step, image registration: select suitable image registration, seek the relative position of two width adjacent images, find out registration point, obtain size and the subimage position relationship of stitching image;
The 4th step, image co-registration: with doubling of the image zone by average weighted method, pixel value is by the synthetic new image of certain weights addition.
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| CN105872470A (en) * | 2016-04-25 | 2016-08-17 | 科盾科技股份有限公司 | Shipborne safe navigation photoelectric auxiliary system |
| CN107576401A (en) * | 2017-09-20 | 2018-01-12 | 中国科学院长春光学精密机械与物理研究所 | A kind of refrigeration mode thermal imaging system |
| CN108519054A (en) * | 2018-04-24 | 2018-09-11 | 长春理工大学 | The caliberating device and scaling method of arc-shaped infrared target simulator |
| CN109615586A (en) * | 2018-05-07 | 2019-04-12 | 杭州新瀚光电科技有限公司 | Infrared image distortion correction algorithm |
| CN109743513A (en) * | 2018-12-17 | 2019-05-10 | 中国科学院长春光学精密机械与物理研究所 | A kind of infrared imaging processing circuit and infrared detection system |
| CN109839196A (en) * | 2019-02-22 | 2019-06-04 | 烟台艾睿光电科技有限公司 | A kind of test board and test macro of infrared focal plane detector |
| CN111256623A (en) * | 2020-03-17 | 2020-06-09 | 北方民族大学 | Pyramid type continuous angle measuring sensor and measuring method thereof |
| CN113375808A (en) * | 2021-05-21 | 2021-09-10 | 武汉博宇光电系统有限责任公司 | Infrared image non-uniformity correction method based on scene |
| CN113776673A (en) * | 2021-11-12 | 2021-12-10 | 国科天成科技股份有限公司 | Non-uniform correction system of thermal infrared imager with large zoom ratio |
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| CN111256623B (en) * | 2020-03-17 | 2022-02-08 | 北方民族大学 | Pyramid type continuous angle measuring sensor and measuring method thereof |
| CN111256623A (en) * | 2020-03-17 | 2020-06-09 | 北方民族大学 | Pyramid type continuous angle measuring sensor and measuring method thereof |
| CN113375808A (en) * | 2021-05-21 | 2021-09-10 | 武汉博宇光电系统有限责任公司 | Infrared image non-uniformity correction method based on scene |
| CN113776673A (en) * | 2021-11-12 | 2021-12-10 | 国科天成科技股份有限公司 | Non-uniform correction system of thermal infrared imager with large zoom ratio |
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