CN207249743U - A kind of portable infrared image and low-light (level) image fusion system - Google Patents
A kind of portable infrared image and low-light (level) image fusion system Download PDFInfo
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Abstract
The utility model discloses a kind of portable infrared image and low-light (level) image fusion system, including low-light (level) optics microscope group, Infrared optical lens, synchronous focusing device, low-light (level) imaging sensor, infrared image sensor, low-light (level) imaging sensor drive module, infrared image sensor drive module, imaging sensor AFE(analog front end), low-light (level) image-signal processor, infrared image signal processor, synchronous generator, picture synchronization collection module, Digital Image Processing module, image display control module, micro-display, display amplifies microscope group, power module, processor peripheral circuit, show switching key, the system optically realizes infrared and low-light (level) video two-way synchronous-focusing, tentatively designed with visual field, reduce the complexity of rear end registration Algorithm；Infrared, low-light (level) can be achieved three kinds of display switchings of video are merged with pseudo-colours.
Description
Technical field
It is real more particularly to a kind of portable infrared image and low-light (level) image the present invention relates to a kind of image processing system
When emerging system, belong to digital image processing techniques field.
Background technology
Night vision technology not only becomes the indispensable Technology for Modern Equipment of army, but also is widely used in all trades and professions.
In recent years, the production domesticization with non-refrigerated infrared detector and prices, civilian infrared night vision market access rapid growth phase.
Night vision technology includes infrared night vision technology and the aspect of Low-light Level Night Vision Technology two.Thermal imaging in infrared night vision is
A kind of passive infrared night vision technology, realizes observation, it is according to target and the back of the body by the infra-red radiation by target its own transmission
Temperature difference or heat radiation difference between scape or target each several part find target.Thermal imaging has solely with respect to other night vision technologies
The advantages of special, such as can mist, rain, snow weather under work, operating distance is remote, can identify pretend with it is anti-interference etc..
Low-light level night vision device is then using noctilucence such as moonlight, starlights, by the light humidification of image intensifier, helps human eye real
A kind of night vision apparatus of existing night observation.Mainly it is made of telescope optical system, image intensifying and high voltage power supply device.Lll night vision
The acquisition of image, can make the mankind under the extremely low day luminous environment of brightness, still more can clearly observe target.With
CCD（Charge coupled cell）/CMOS（Complementary metal oxide semiconductor）The development of technology, low-light (level) sensor become newly micro-
The developing direction of light night vision technology, the night vision imaging product cost of low-light (level) Sensor Design substantially reduce, and will enter each application
Field.
Although infrared night vision technology and low-light (level) night vision technology develop with each achieving conspicuousness, still exist each
From limitation.The infrared image shot using infrared sensor can also identify target under conditions of completely black, but level
It is poor with three-dimensional sense, lack details and contrast, intensity profile mode is inconsistent compared with visible images, without intuitive
With identity feature；The low-light (level) image shot using low-light (level) sensor, the visible images being already adapted to human eye are in ash
Homogeneity is kept in degree distribution, but low-light (level) imaging sensor is applicable in only under the conditions of the daylight, is then failed under the conditions of completely black, and
It is vulnerable to strong shadow to ring.
Image co-registration be by two kinds from different time or same time from acquired in different sensors on same
The image of scene carries out integrated treatment, and generates the information process of this new related scene interpretation.Utilize image co-registration skill
The image of two kinds of separate sources, can be carried out multi-level, multi-level, processing and comprehensive in many aspects by art, extract it is more rich,
More accurate reliable key message.Image fusion technology realizes the fusion of infrared image and low-light (level) image, can make up each biography
The limitation of sensor, obtains more structurally sound information, make system have contain much information, can round-the-clock observation the features such as.Current
Night-vision devices are only capable of providing the image of monochrome, using the Pseudo-color Technique in image co-registration, then can go back the colour of original image
Information, is more conducive to target identification.
At present, most common night vision integration technology be visible ray with, far infrared band merges.From the means of realization
Division, the technical solution of image co-registration have two kinds：Optical fusion method, digital fusion method.Simple optical fusion depends on
Optical texture, fusion process do not postpone, but the picture merged is inconvenient to adjust, and can not realize storage writing function；Totally
Word fusion method is merged different night vision images pixel by pixel, can better adapt to the change of external environment, but
Be implement it is relatively more complicated.
The content of the invention
The present invention one of solves the problems, such as：Overcome the problem of picture quality is poor in existing simple optics emerging system,
Based on digital emerging system solution integration good digital image processing algorithm and realize preferable image syncretizing effect.
What the present invention solved the problems, such as two is：Overcome visual field in existing emerging system, the problem of time synchronization is more difficult, utilize
Optical synchronous focusing design and image-signal processor synchronously trigger design method, meet the synchronous need of visual field, time synchronization
Ask, simplify the complexity of image registration algorithm and Image Fusion.
What the present invention solved the problems, such as three is：For algorithm complex height in portable emerging system but require processing body
The small contradiction of product, is merged using embedded multi-core isomery microprocessor AM572x as System Control Center and image digitazation
The operation carrier of algorithm, makes system design miniaturization easy to implement, portability.
The present invention is in order to overcome above-mentioned deficiency, there is provided a kind of portable infrared image is merged with low-light (level) image pure digi-tal
The implementation of system, is realized especially by following measure：
A kind of portable infrared image and low-light (level) image fusion system, including low-light (level) optics microscope group, infrared optics mirror
It is group, synchronous focusing device, low-light (level) imaging sensor, infrared image sensor, low-light (level) imaging sensor drive module, infrared
Imaging sensor drive module, imaging sensor AFE(analog front end), low-light (level) image-signal processor, infrared image signal processing
Device, synchronous generator, main control processor, picture synchronization collection module, Digital Image Processing module, image display control mould
Block, display switching key, the first micro-display, the second micro-display, the first display amplification microscope group, second display magnifying glass
Group, processor peripheral circuit, power module, described image synchronous acquisition module, Digital Image Processing module, image display control
Module is respectively the subprocessing unit of main control processor.
Further, the main control processor is AM572X type embedded multi-core heterogeneous processors.Main control processor uses moral
The Sitara multinuclear heterogeneous processor AM572x of state instrument are as primary processor and perform Image Acquisition, image procossing, image and show
The relative program such as show, wherein image acquisition process is mainly controlled by the ARM cores in multinuclear heterogeneous processor, and image algorithm master
Operate in the DSP core of multinuclear heterogeneous processor.
Further, the low-light (level) optics microscope group（101）, Infrared optical lens（102）, synchronous focusing device（103）For
Integral co-design.
Further, the low-light (level) imaging sensor is high sensitivity low-light (level) imaging sensor MCCD, and concrete model is
BG0601D。
Further, described image sensor AFE(analog front end) includes low-light (level) imaging sensor AFE(analog front end) and infrared image passes
The chip of sensor AFE(analog front end), low-light (level) imaging sensor AFE(analog front end) and infrared image sensor AFE(analog front end) uses AFE
Chip.
Further, synchronizing signal caused by the synchronous generator is by 8051 chip microcontrollers；
Further, described image display control module utilizes the coprocessor in AM572X processors to realize.
Further, the Digital Image Processing module is by Infrared images pre-processing, infrared image duplication, low-light (level) image
Reason, low-light (level) copying image, digital image registration, Digital Image Fusion, output image selection are formed.
Further, the display switching key is used to switch display pattern, and the pattern supported is shown including low-light (level) image
Show pattern, infrared image display pattern, blending image display pattern.
Further, first micro-display and the second micro-display are OLED micro-displays, and system uses two
OLED micro-displays are as display, and the image that shows of micro-display is further amplified by amplification microscope group and image is finally fitted
Close human eye viewing.
Further, the power module includes lithium battery, direct current supply terminal, power management module, multi-channel DC voltage stabilization
Device, lead-out terminal.
Further, processor peripheral circuit includes clock oscillation, reset circuit, holder.
Compared with prior art, the present invention the present invention has the following advantages：
（1）It is digitized and is merged with low-light (level) imaging sensor acquired image using infrared sensor, and with puppet
Image information after color mode display fusion；
（2）The infrared acquisition system with low-light (level) two-way Image Acquisition, focusing synchronous, time synchronization designs；
（3）Using the embedded multi-core isomery microprocessor of small volume as System Control Center and image digitazation
The operation carrier of blending algorithm, makes equipment have portability aspects.Meanwhile the use of embedded multi-core isomery microprocessor is also protected
The fluency of algorithm operation has been demonstrate,proved, the Digital Image Fusion algorithm that complexity is high, data volume is big can be run；
（4）The miniature OLED of binocular of three kinds of display patterns of infrared, low-light (level) and pseudo-colours is shown, handoff functionality.
Brief description of the drawings
Fig. 1 is present system structure diagram；
Fig. 2 is that Digital Image Processing module of the present invention realizes block diagram；
Fig. 3 is schematic diagram inside power module of the present invention.
Description of reference numerals：101 low-light (level) optics microscope groups, 102 Infrared optical lens, 103 synchronous focusing devices, 104 is low
Illumination image sensor, 105 infrared image sensors, 106 low-light (level) imaging sensor AFE(analog front end)s, 107 low-light (level) images pass
Sensor drive module, 108 infrared image sensor AFE(analog front end)s, 109 infrared image sensor drive modules, 110 low-light (level) figures
As signal processor ISP, 111 synchronous generators, 112 infrared image signal processors, 113 main control processors, 114 images
Synchronous acquisition module, 115 Digital Image Processing modules, 116 image display control modules, 117 display switching keys, 118 first
Micro-display, 119 second micro-displays, 120 first displays amplification microscope group, 121 second displays amplification microscope group, 122 processing
Device peripheral circuit, 123 power modules, 201 Infrared images pre-processings, 203 infrared images replicate, 202 low-light (level) image preprocessings,
204 low-light (level) copying images, 205 digital image registrations, 206 Digital Image Fusions, the selection of 207 output images, 301 lithium batteries,
302 direct current supply terminals, 303 power management modules, 304 multi-channel DC voltage stabilization devices, 305 lead-out terminals.
Embodiment
Below with reference to attached drawing, technical scheme is described further：
As shown in Figure 1, the system structure of the present invention is by low-light (level) optics microscope group 101, Infrared optical lens 102, same to step
Coke installation 103, low-light (level) imaging sensor 104, infrared image sensor 105, low-light (level) imaging sensor AFE(analog front end) 106,
Low-light (level) imaging sensor drive module 107, infrared image sensor AFE(analog front end) 108, infrared image sensor drive module
109th, low-light (level) image-signal processor ISP110, synchronous generator 111, infrared image signal processor 112, at master control
Manage device 113, picture synchronization collection module 114, Digital Image Processing module 115, image display control module 116, display switching
Button 117, the first micro-display 118, the second micro-display 119, the first display amplification microscope group 120, second display amplification
Microscope group 121, processor peripheral circuit 122, power module 123 form.
The System Working Principle is：The optical imagery of scene passes through low-light (level) optics microscope group 101 and Infrared optical lens
102 image in low-light (level) imaging sensor 104 and infrared image sensor 105 respectively, low-light (level) imaging sensor driving mould
Block 107 and infrared image sensor drive module 109 are respectively that above-mentioned two imaging sensor provides basic driver sequential, this two
A sensor starts and is converted to optical imagery the electric signal being proportionate with image intensity distribution at the same time, and low-light (level) image passes
Sensor AFE(analog front end) 106 and infrared image sensor AFE(analog front end) 108 distinguish the analog signal from two imaging sensors
It is amplified, and after completing the conversion of analog/digital, image-signal processor ISP110 is produced according to synchronous generator 111
Raw synchronizing signal synchronizes electric signal sampling, processing, and transformation result is output to video interface bus；In microprocessor
Picture synchronization collection control module 114 exports synchronizing signal, and receives view data into memory from video bus, digitized map
As processing module 115 extracts infrared image and low-light (level) image, and then the relevant treatment such as progress image co-registration respectively from memory
Work；116 output timing logical signal of image display control module, drives two display work, view data is output to
The data-in port of first miniscope 118 and the second miniscope 119, it is finally, same in two micro-display screens
Step shows blending image, and respectively further puts image through the first optical amplifier microscope group 120 and the second optical amplifier microscope group 121
Greatly, human eye is enable to watch the picture of suitable size.
Described image synchronous acquisition module 114, Digital Image Processing module 115 and image display control module 116 are distinguished
For the subprocessing unit of main control processor 113, main control processor 113 is AM572X type embedded multi-core heterogeneous processors；Using
The Sitara multinuclear heterogeneous processor AM572x of Texas Instrument are as primary processor and perform Image Acquisition, image procossing, image
The relative programs such as display, wherein image acquisition process are mainly controlled by the ARM cores in multinuclear heterogeneous processor, and image algorithm
Mainly operate in the DSP core of multinuclear heterogeneous processor.
The emerging system by gathering infrared image and low-light (level) image is used as image source and is merged, infrared figure in real time
As being gathered by passive type non-refrigeration focal surface infrared detector, low-light (level) image is adopted by passive type low-light (level) imaging sensor 104
Collection.
The low-light (level) imaging sensor 104 uses high sensitivity low-light (level) imaging sensor MCCD, and concrete model is
BG0601D。
The system employs synchronous-focusing design in optical design and is tentatively designed with visual field, the low-light (level) optics
Microscope group 101, Infrared optical lens 102, synchronous focusing device 103 are integrated co-design, i.e., using a focusing knob at the same time
The lens position in two light paths is controlled, can optically ensure infrared image sensor 105 and low-light (level) imaging sensor 104
Be in image effect of the same size, so as to fulfill the function of two sensor synchronous-focusings；
To realize synchronous exposure, produce synchronizing signal using a synchronous generator and control two picture signals at the same time
Processor starts collection and conversion, to ensure to capture the infrared image and visible images at same moment during collection every time.
Synchronizing signal being capable of root by 8051 chip microcontrollers, the microcontroller caused by the synchronous generator 111
The lock-out pulse of fixed frequency and duty cycle is produced according to configuration parameter.
The low-light (level) imaging sensor AFE(analog front end) 106 and infrared image sensor AFE(analog front end) 108 are using general
AFE chip, such as TLV990.Two imaging sensor AFE(analog front end) AFE are to the analog signal from two imaging sensors point
It is not amplified, and completes the conversion of analog to digital, last output digit signals gives the latter processing unit.
The low-light (level) imaging sensor drive module 107 and infrared image sensor drive module 109 drive image
The process of sensor is：By the driving logical transition that image-signal processor ISP is exported into low-light (level) imaging sensor and infrared
The high-voltage driven signal of imaging sensor, drives low-light (level) imaging sensor and infrared image sensor to realize that image pixel is swept
Retouch.
The low-light (level) image-signal processor 110 and infrared image signal processor 112 are image-signal processor ISP
Primary digital image procossing, including auto-exposure control AEC, automatic growth control are done to the view data from imaging sensor
AGC and white balance AWB, gamma Gamma are corrected, and are output in a parallel fashion in video bus and by the figure in processor after processing
As synchronous acquisition module 114 gathers, and above-mentioned image-signal processor carries out view data the method and parameter of preliminary treatment
It is that can be adjusted to set by back-end processor.
When the emerging system starts to gather an image, picture synchronization collection module 114 sends a collection and refers to first
Instruction is converted to synchronous acquisition pulse by order, synchronous generator 111, and acquisition pulse triggering image-signal processor ISP is opened
An Image Acquisition is moved, after to be collected, synchronous acquisition module 114 reads view data into memory from bus.
As shown in Fig. 2, Digital Image Processing module 115 replicates 203, low photograph by Infrared images pre-processing 201, infrared image
Spend image preprocessing 202, low-light (level) copying image 204, digital image registration 205, Digital Image Fusion 206, output image choosing
207 compositions are selected, the processing procedure of above sub-function module is realized using existing software algorithm.Wherein, infrared image is located in advance
201 pairs of images of reason carry out preliminary image enhancement and filtering process；Infrared image replicates 203 and 204 mistake of low-light (level) copying image
Copying image is respectively two copies by journey, and one of copy is used for image registration and image co-registration is handled, another is secondary
This is used to directly display；Image is corrected using image registration algorithm for 205 process of digital image registration and registration, makes two width
Object in image is overlapping in position, uniformly；Image after registration is merged by Image Fusion, is produced a width and is melted
Image after conjunction；Image selector according to button state from the infrared images of 3 width copying images, the low-light (level) image replicated, melt
Close selection piece image in image and be output to display device.
Described image display control module 116 realizes that its function is output using the coprocessor in AM572X processors
Drive logic, driving OLED display work.
The display i.e. the first micro-display 118 and the second micro-display 119 are miniature for two model SVGA050's
Display, is 0.5 inch of miniature OLED display, the image warp that the content that two displays are shown is consistent, and micro-display is shown
Cross optical amplifier microscope group to be further amplified, make to be adapted to eye-observation.
Particularly, the system also includes display switching key 117, which is used to switch display pattern, often presses
As soon as time switching push button, system switches a pattern, and institute's support pattern includes：Pure low-light (level) display pattern, pure infrared display mould
Formula, blending image display pattern.
The power module 123 provides plurality of stable reliable supply voltage for whole system, to realize portable system
Design, power supply mode includes the power supply of AC adapters and lithium battery power supply two ways, and system adapter is fitted using DC 12V/2A
Orchestration.
As shown in figure 3, the power module 123 includes lithium battery 301, direct current supply terminal 302, power management module
303rd, multi-channel DC voltage stabilization device 304, lead-out terminal 305, the lithium battery 301 and direct current supply terminal 302 are two kinds of alternative confessions
Electrically, acquiescence uses battery powered.In-line power is switched to when there is externally fed, while is charged to lithium battery；Switched
Journey and to lithium battery charging control process realized by power management module 303；Multi-channel DC voltage stabilization device 304 provides a variety of
Steady dc voltage exports, there is provided energy gives system modules；Each voltage is exported eventually through lead-out terminal 305.
The processor peripheral circuit 122 includes clock oscillation, reset circuit, holder etc., is provided for processor
Basic operating conditions.
Claims (10)
1. a kind of portable infrared image and low-light (level) image fusion system, it is characterised in that including low-light (level) optics microscope group
（101）, Infrared optical lens（102）, synchronous focusing device（103）, low-light (level) imaging sensor（104）, infrared image sensing
Device（105）, low-light (level) imaging sensor drive module（107）, infrared image sensor drive module（109）, imaging sensor
AFE(analog front end), low-light (level) image-signal processor（110）, infrared image signal processor（112）, synchronous generator
（111）, main control processor（113）, picture synchronization collection module（114）, Digital Image Processing module（115）, image display control
Molding block（116）, display switching key（117）, the first micro-display（118）, the second micro-display（119）, the first display
Amplify microscope group（120）, second display amplification microscope group（121）, processor peripheral circuit（122）, power module（123）, it is described
Picture synchronization collection module（114）, Digital Image Processing module（115）, image display control module（116）Respectively at master control
Manage device（113）Subprocessing unit.
2. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Main control processor（113）For AM572X type embedded multi-core heterogeneous processors.
3. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Low-light (level) optics microscope group（101）, Infrared optical lens（102）, synchronous focusing device（103）It is integrated co-design.
4. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Low-light (level) imaging sensor（104）For high sensitivity low-light (level) imaging sensor MCCD, concrete model BG0601D.
5. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Imaging sensor AFE(analog front end) includes low-light (level) imaging sensor AFE(analog front end)（106）With infrared image sensor AFE(analog front end)
（108）, low-light (level) imaging sensor AFE(analog front end)（106）With infrared image sensor AFE(analog front end)（108）Chip use
AFE chip.
6. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Synchronous generator（111）Caused synchronizing signal is by 8051 chip microcontrollers；Described image display control module（116）
Realized using the coprocessor in AM572X processors.
7. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Digital Image Processing module（115）By Infrared images pre-processing（201）, infrared image replicate（203）, low-light (level) image procossing
（202）, low-light (level) copying image（204）, digital image registration（205）, Digital Image Fusion（206）, output image selection
（207）Form.
8. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
Show switching key（117）For switching display pattern, the pattern supported includes low-light (level) image display mode, infrared image
Display pattern, blending image display pattern.
9. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that described
First micro-display（118）With the second micro-display（119）It is OLED micro-displays.
10. a kind of portable infrared image as claimed in claim 1 and low-light (level) image fusion system, it is characterised in that institute
State power module（123）Including lithium battery（301）, direct current supply terminal（302）, power management module（303）, multi-channel DC it is steady
Depressor（304）, lead-out terminal（305）.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107203987A (en) * | 2017-06-07 | 2017-09-26 | 云南师范大学 | A kind of infrared image and low-light (level) image real time fusion system |
| CN110381252A (en) * | 2019-07-18 | 2019-10-25 | 湖南宏动光电有限公司 | A kind of graphic system |
| CN110874921A (en) * | 2018-08-31 | 2020-03-10 | 百度在线网络技术（北京）有限公司 | Intelligent road side unit and information processing method thereof |
| CN111064890A (en) * | 2019-12-25 | 2020-04-24 | 安凯(广州)微电子技术有限公司 | Multi-view circuit equipment and multi-view circuit control method |
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2017
- 2017-06-07 CN CN201720656396.4U patent/CN207249743U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107203987A (en) * | 2017-06-07 | 2017-09-26 | 云南师范大学 | A kind of infrared image and low-light (level) image real time fusion system |
| CN110874921A (en) * | 2018-08-31 | 2020-03-10 | 百度在线网络技术（北京）有限公司 | Intelligent road side unit and information processing method thereof |
| US11217091B2 (en) | 2018-08-31 | 2022-01-04 | Apollo Intelligent Driving Technology (Beijing) Co., Ltd. | Smart roadside unit and method for processing information by smart roadside unit |
| CN110381252A (en) * | 2019-07-18 | 2019-10-25 | 湖南宏动光电有限公司 | A kind of graphic system |
| CN111064890A (en) * | 2019-12-25 | 2020-04-24 | 安凯(广州)微电子技术有限公司 | Multi-view circuit equipment and multi-view circuit control method |
| CN111064890B (en) * | 2019-12-25 | 2021-08-20 | 安凯(广州)微电子技术有限公司 | Multi-view circuit equipment and multi-view circuit control method |
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